EP2813618A1 - Non-slip sheet - Google Patents

Non-slip sheet Download PDF

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Publication number
EP2813618A1
EP2813618A1 EP14172204.1A EP14172204A EP2813618A1 EP 2813618 A1 EP2813618 A1 EP 2813618A1 EP 14172204 A EP14172204 A EP 14172204A EP 2813618 A1 EP2813618 A1 EP 2813618A1
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EP
European Patent Office
Prior art keywords
friction
coefficient
sheet
zones
slip sheet
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Granted
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EP14172204.1A
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German (de)
French (fr)
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EP2813618B1 (en
Inventor
Adeline Blaise
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Endupack
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Endupack
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2571/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans, pop bottles; Bales of material
    • B65D2571/00006—Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
    • B65D2571/00043—Intermediate plates or the like

Definitions

  • the present invention relates to the field of packaging and packaging, and relates more particularly to a non-slip sheet for stabilizing stacked loads, in particular on a pallet.
  • the charges each take the form of a carton, and the cartons are stacked on several successive layers on the pallet.
  • This sliding due to the relatively smooth surface of the cartons limiting the friction between two adjacent layers of cartons, is problematic because it can lead to a fall of one or more cartons of the pallet, which can lead to a loss of the product transported in the cartons or even an injury to the operator or operators handling the pallet during transport.
  • US patent application US 5570643 discloses a non-slip element of this type, in the form of a sheet made of rigid but foldable material, preferably plastic, paper or a composite of paper and plastic, comprising a plurality of structures, each in the form of a small bump, which can be crushed.
  • anti-slip elements of this type are the important place taken by their storage and their low stackability, because of the bumps formed. In addition, these bumps help to increase the height of the pallet on which the non-slip element is used.
  • non-slip element consisting of a sheet having both surfaces surface-treated to be rough, said non-slip element being introduced between two layers of adjacent cardboard to prevent the sliding of the cartons of one of the layers with respect to those of the adjacent layer.
  • this known antiskid element does not solve the problem of stackability. Indeed, it is customary to pack several sheets pressed against each other by strapping strips.
  • the manufacture of the non-slip sheet requires a treatment of the entire surface of its two faces to give them a rough appearance / a significant coefficient of friction, which requires a significant and expensive treatment.
  • the invention aims to solve the problems of the prior art and relates to a flat non-slip sheet, on both sides of which are alternately formed low friction areas and areas with a high coefficient of friction.
  • low coefficient of friction is meant a coefficient of friction between 0 and 0.3, preferably between 0.2 and 0.3.
  • a high coefficient of friction means a coefficient of friction between 0.31 and 3, preferably between 0.7 and 2.
  • the important thing is the difference in coefficient of friction between two types of zones, a first type of zone having to have a coefficient of friction lower than the coefficient of friction of the second type of zone.
  • the sheet is made of cardboard, but can also be paper, plastic, or a combination thereof.
  • a paper of grammage of between 60 and 300 g / m 2 .
  • the subject of the present invention is therefore a non-slip sheet, surface treated to present an alternation of zones having a first coefficient of friction and zones having a second coefficient of friction, the first coefficient of friction being lower than the second coefficient of friction, characterized in that it is flat and that each of the two sides of the sheet is divided according to a grid, each box of the grid being occupied by one of a zone with a first coefficient of friction or a zone with a second coefficient of friction, and two adjacent squares of the grid being occupied by zones with different coefficients of friction.
  • the first coefficient of friction is a low coefficient of friction
  • the second coefficient of friction is a high coefficient of friction
  • zone with a first coefficient of friction and "zone with a low coefficient of friction” are synonymous and will be used interchangeably.
  • zone with a second coefficient of friction and "zone with a high coefficient of friction” are synonymous and will be used interchangeably.
  • the ratio between the first coefficient of friction and the second coefficient of friction can be between 0 and 0.97, preferably between 0.1 and 0.43.
  • the zones with a low coefficient of friction and with a high coefficient of friction can be arranged on each face of the sheet in the manner of a checkerboard, the zones with a low coefficient of friction being, for example, the white squares of the checkerboard, and the areas with a high coefficient of friction the black squares of the checkerboard.
  • the non-slip sheet of the invention is therefore generally flat, namely that the difference in thickness between a zone with a low coefficient of friction and a zone with a high coefficient of friction is low, for example between 50% and 300%.
  • the non-slip sheet of the invention may have a thickness of between 0.2 mm and 0.6 mm.
  • the grids on both sides of the sheet are identical, that is to say have the same dimensions and configurations, the spaces occupied by the zones with a first coefficient of friction on a first face being occupied on the other side by the zones with a second coefficient of friction, and the squares occupied by the zones with a second coefficient of friction on the first face being occupied on the other side by the zones with a first coefficient of friction.
  • the zones are alternated between the two faces of the same sheet.
  • An advantage of this configuration is that identical slip-resistant sheets can be stacked and bundled, the arrangement of the zones implying that when the sheets are stacked with all the same side facing the same side, the areas with a high coefficient of friction of one side of a sheet will be in contact with the low friction zones of one face of the adjacent sheet in the stack, which ensures reduced friction between the two sheets and thus allows them to be easily detached in use by an operator who takes them individually from a stack. A mechanization of the laying of leaves from a pile can also be more easily considered.
  • each zone with a second coefficient of friction occupies the entire surface of the square of the grid in which it is located.
  • the grid may in particular be, for example, squared boxes, diamond-shaped or honeycomb.
  • each zone with a second coefficient of friction occupies a central part of the surface of the square of the grid in which it is situated, the peripheral part around the central part in the box consisting of a surface with a first coefficient friction.
  • Areas with a high coefficient of friction may occupy between 20% and 50% of the face of a non-slip sheet according to the present invention.
  • the zone with a second coefficient of friction has the form of a square, a rectangle, a circle, a polygon, a regular polygon or any other shape within the corresponding grid box.
  • the square shape of the zone with a high coefficient of friction advantageously produces better mechanical friction, and makes it possible to have two directions of friction (along the sides of the squares) with the cartons or objects between the layers of which the non-slip sheets are arranged according to the 'invention.
  • the sheet is rectangular or square, the grid lines being parallel to the edges of the sheet.
  • the grid is then similar, as indicated in the example above, to a checkerboard.
  • the zones with a first coefficient of friction are smooth, especially to the touch: the roughness is then only due to these smooth zones to the orientation of the cellulose fibers on the surface of the sheet.
  • Areas with a high coefficient of friction are obtained by surface treatment of the sheet, the areas of low friction being the untreated areas of the non-slip sheet.
  • the zones with a second coefficient of friction have a plurality of reliefs, obtained by mechanical surface treatment. All of the reliefs make it possible to obtain the high coefficient of friction.
  • the reliefs are studs uniformly distributed over each zone with a second coefficient of friction.
  • the barbs may have a height of 0.2 mm, and are distributed at a density of between 30 barbs / cm 2 and 60 barbs / cm 2 , preferably 45 barbs / cm 2 .
  • the pins may have a diameter of between 0.2 and 0.6 mm, preferably 0.33 mm.
  • the pins may advantageously be colored.
  • the reliefs or pins are obtained by a surface treatment from a smooth surface sheet, the reliefs / pins being formed on the sheet by engraved rollers, according to a mechanical surface treatment.
  • the reliefs have a height from the surface of the sheet of between 0.07 mm and 0.3 mm, preferably between 0.12 mm and 0.17 mm.
  • possible dimensions for a sheet according to the invention are 120 ⁇ 80 cm, 114 ⁇ 94 cm or 55 ⁇ 60 cm; larger or smaller formats are also possible.
  • Figures 1A and 1B it can be seen that there is shown a non-slip sheet 1 according to a first embodiment, the Figure 1A representing one of the faces of said sheet anti-slip 1 and the Figure 1B representing the other side of said non-slip sheet 1.
  • each face has zones with a low coefficient of friction 2, schematically represented in white, and zones with a high coefficient of friction 3, schematically represented in black, arranged in the manner of a checkerboard, that is to say that the zones with a low coefficient of friction 2 and areas with a high coefficient of friction 3 are alternately arranged to cover the entire surface of each face of the non-slip sheet 1, the zones with a low coefficient of friction 2 and the zones with a high coefficient friction 3 being offset between the two faces so that during the stacking of several non-slip sheets 1, the areas with a high coefficient of friction 3 of a sheet are not in contact with the areas with a high coefficient of friction 3 of the sheet on / under which she is stacked.
  • the non-slip sheet 10 also comprises areas with a low coefficient of friction 20 and zones with a high coefficient of friction 30, arranged in a manner similar to the first embodiment, with the exception that the zones with high friction coefficient of friction 30 have a lower surface area with low coefficient of friction 20.
  • any form of zone with a high coefficient of friction (Round, octagonal, etc 7) is envisaged within the framework of the present invention, provided that each area with a high coefficient of friction is contained in alternating squares of a grid that divides each face of the non-slip sheet of the present invention. invention.
  • the gridlines described in the embodiments have its lines and columns parallel to the sides of the sheet, but a grid line whose lines would form an angle with the sides of the sheet is also within the scope of the present invention.
  • proportion of area of areas with a high coefficient of friction relative to the area of areas with a low coefficient of friction is not limited by the present example, and any proportion is conceivable within the scope of the present invention.
  • a comparative test of the non-slip sheet according to the present invention was carried out by the Applicant Company.
  • the comparative test consisted of stacking cartons on a pallet and testing to what angle the pallet could be tilted before the cartons fell off the pallet.
  • a layer of non-slip sheets according to the invention was placed under each row of boxes.
  • the maximum angle of inclination of the pallet before the cartons slip from the pallet was then measured at 25 ° to the horizontal.
  • the antiskid performance of the sheet according to the present invention is found to be almost identical to that of the antiskid sheet of the prior art, with a much lower manufacturing cost, due to the fact that only a part of the non-slip sheet is treated to be slip resistant.

Abstract

La présente invention a pour objet une feuille antidérapante (1), traitée en surface pour présenter une alternance de zones ayant un premier coefficient de frottement (2) et de zones ayant un deuxième coefficient de frottement (3), le premier coefficient de frottement étant inférieur au deuxième coefficient de frottement, caractérisée par le fait qu'elle est plate et que chacune des deux faces de la feuille (1) est divisée selon un quadrillage, chaque case du quadrillage étant occupée par l'une d'une zone à premier coefficient de frottement (2) ou d'une zone à deuxième coefficient de frottement (3), et deux cases adjacentes du quadrillage étant occupées par des zones à coefficients de frottement différents.The present invention relates to a non-slip sheet (1), surface treated to present an alternation of zones having a first coefficient of friction (2) and zones having a second coefficient of friction (3), the first coefficient of friction being less than the second coefficient of friction, characterized in that it is flat and that each of the two faces of the sheet (1) is divided according to a grid, each box of the grid being occupied by one of a zone with first coefficient of friction (2) or a zone with a second coefficient of friction (3), and two adjacent squares of the grid being occupied by zones with different coefficients of friction.

Description

La présente invention concerne le domaine de l'emballage et du conditionnement, et porte plus particulièrement sur une feuille antidérapante destinée à stabiliser des charges empilées, notamment sur une palette.The present invention relates to the field of packaging and packaging, and relates more particularly to a non-slip sheet for stabilizing stacked loads, in particular on a pallet.

Lors du conditionnement d'une palette, on cherche généralement pour des raisons de coût de transport, à disposer le maximum de charges sur celle-ci.When packaging a pallet, it is generally sought for reasons of transport cost, to have the maximum of loads on it.

Les charges prennent chacune la forme d'un carton, et les cartons sont empilés sur plusieurs couches successives sur la palette.The charges each take the form of a carton, and the cartons are stacked on several successive layers on the pallet.

Lors du transport, du fait des manipulations des palettes et des vibrations dues au transport, il peut arriver qu'un ou plusieurs des cartons d'une couche glissent par rapport aux cartons d'une couche adjacente de la palette.During transport, due to the handling of the pallets and the vibrations due to the transport, it can happen that one or more of the cartons of a layer slip with respect to the cartons of an adjacent layer of the pallet.

Ce glissement, dû à la surface relativement lisse des cartons limitant le frottement entre deux couches adjacentes de cartons, est problématique, car il peut conduire à une chute d'un ou plusieurs des cartons de la palette, pouvant entraîner une perte du produit transporté dans le ou les cartons, voire une blessure du ou des opérateurs manipulant la palette pendant son transport.This sliding, due to the relatively smooth surface of the cartons limiting the friction between two adjacent layers of cartons, is problematic because it can lead to a fall of one or more cartons of the pallet, which can lead to a loss of the product transported in the cartons or even an injury to the operator or operators handling the pallet during transport.

Afin de résoudre ce problème, il est connu de disposer un élément antidérapant, non collant, entre deux couches successives de cartons sur une palette, afin d'éviter le glissement des cartons d'une couche par rapport aux cartons d'une couche adjacente.In order to solve this problem, it is known to have a non-slip, non-sticking element between two successive layers of cardboard on a pallet, in order to prevent the cartons from sliding one layer relative to the cartons of an adjacent layer.

La demande de brevet américain US 5570643 divulgue un élément antidérapant de ce type, sous la forme d'une feuille composée de matériau rigide mais pliable, de préférence en plastique, en papier ou en un composite de papier et de plastique, comprenant une pluralité de structures, chacune en forme de petite bosse, pouvant être écrasées.The US patent application US 5570643 discloses a non-slip element of this type, in the form of a sheet made of rigid but foldable material, preferably plastic, paper or a composite of paper and plastic, comprising a plurality of structures, each in the form of a small bump, which can be crushed.

Les inconvénients des éléments antidérapants de ce type sont la place importante prise par leur stockage et leur faible aptitude à l'empilement, du fait des bosses formées. En outre, ces bosses contribuent à augmenter la hauteur de la palette sur laquelle l'élément antidérapant est utilisé.The disadvantages of anti-slip elements of this type are the important place taken by their storage and their low stackability, because of the bumps formed. In addition, these bumps help to increase the height of the pallet on which the non-slip element is used.

Il est également connu un élément antidérapant, constitué d'une feuille ayant ses deux faces traitées en surface pour être rugueuses, ledit élément antidérapant étant introduit entre deux couches de cartons adjacentes pour éviter le glissement des cartons de l'une des couches par rapport à ceux de la couche adjacente.It is also known a non-slip element, consisting of a sheet having both surfaces surface-treated to be rough, said non-slip element being introduced between two layers of adjacent cardboard to prevent the sliding of the cartons of one of the layers with respect to those of the adjacent layer.

Cet élément, davantage plat que l'élément antidérapant de la demande de brevet américain US 5570643 précitée, résout les problèmes de la place prise par le stockage de plusieurs feuilles et de la limitation de la hauteur de la palette une fois les feuilles antidérapantes insérées entre les couches successives de cartons.This element, flatter than the antiskid element of the US patent application US 5570643 above, solves the problems of the place taken by the storage of several sheets and the limitation of the height of the pallet once the non-slip sheets inserted between the successive layers of cartons.

Cependant, cet élément antidérapant connu ne résout pas le problème de l'aptitude à l'empilement. En effet, il est d'usage de conditionner plusieurs feuilles pressées les unes contre les autres par des feuillards de cerclage.However, this known antiskid element does not solve the problem of stackability. Indeed, it is customary to pack several sheets pressed against each other by strapping strips.

Or, à l'utilisation, une fois les feuillards retirés, les surfaces rugueuses de deux feuilles adjacentes ont tendance à frotter l'une contre l'autre, ce qui rend difficile la séparation des feuilles individuelles, et conduit à une perte de temps des opérateurs chargés de disposer les feuilles sur chaque couche de cartons.However, in use, once the strips are removed, the rough surfaces of two adjacent sheets tend to rub against each other, which makes it difficult to separate the individual sheets, and leads to a loss of time of the operators responsible for arranging the sheets on each layer of cartons.

En outre, la fabrication même de la feuille antidérapante demande un traitement de la totalité de la surface de ses deux faces pour leur conférer un aspect rugueux/un coefficient de frottement important, ce qui demande un traitement important et coûteux.In addition, the manufacture of the non-slip sheet requires a treatment of the entire surface of its two faces to give them a rough appearance / a significant coefficient of friction, which requires a significant and expensive treatment.

L'invention vise à résoudre les problèmes de l'état antérieur de la technique et porte sur une feuille antidérapante plate, sur les deux faces de laquelle sont formées en alternance des zones à faible coefficient de frottement et des zones à fort coefficient de frottement.The invention aims to solve the problems of the prior art and relates to a flat non-slip sheet, on both sides of which are alternately formed low friction areas and areas with a high coefficient of friction.

Par faible coefficient de frottement, on entend un coefficient de frottement compris entre 0 et 0,3 de préférence compris entre 0,2 et 0,3.By low coefficient of friction is meant a coefficient of friction between 0 and 0.3, preferably between 0.2 and 0.3.

De même, par fort coefficient de frottement, on entend un coefficient de frottement compris entre 0,31 et 3 de préférence compris entre 0,7 et 2.Similarly, a high coefficient of friction means a coefficient of friction between 0.31 and 3, preferably between 0.7 and 2.

L'important est la différence de coefficient de frottement entre deux types de zones, un premier type de zone devant avoir un coefficient de frottement inférieur au coefficient de frottement du deuxième type de zone.The important thing is the difference in coefficient of friction between two types of zones, a first type of zone having to have a coefficient of friction lower than the coefficient of friction of the second type of zone.

Selon un mode de réalisation, la feuille est en carton, mais peut également être en papier, en plastique, ou en une combinaison de ceux-ci.According to one embodiment, the sheet is made of cardboard, but can also be paper, plastic, or a combination thereof.

Selon un mode de réalisation, on peut notamment utiliser un papier de grammage compris entre 60 et 300g/m2.According to one embodiment, it is possible in particular to use a paper of grammage of between 60 and 300 g / m 2 .

La présente invention a donc pour objet une feuille antidérapante, traitée en surface pour présenter une alternance de zones ayant un premier coefficient de frottement et de zones ayant un deuxième coefficient de frottement, le premier coefficient de frottement étant inférieur au deuxième coefficient de frottement, caractérisée par le fait qu'elle est plate et que chacune des deux faces de la feuille est divisée selon un quadrillage, chaque case du quadrillage étant occupée par l'une d'une zone à premier coefficient de frottement ou d'une zone à deuxième coefficient de frottement, et deux cases adjacentes du quadrillage étant occupées par des zones à coefficients de frottement différents.The subject of the present invention is therefore a non-slip sheet, surface treated to present an alternation of zones having a first coefficient of friction and zones having a second coefficient of friction, the first coefficient of friction being lower than the second coefficient of friction, characterized in that it is flat and that each of the two sides of the sheet is divided according to a grid, each box of the grid being occupied by one of a zone with a first coefficient of friction or a zone with a second coefficient of friction, and two adjacent squares of the grid being occupied by zones with different coefficients of friction.

Le premier coefficient de frottement est un coefficient de frottement faible, le deuxième coefficient de frottement est un fort coefficient de frottement.The first coefficient of friction is a low coefficient of friction, the second coefficient of friction is a high coefficient of friction.

Dans la présente demande, les expressions « zone à premier coefficient de frottement » et « zone à faible coefficient de frottement » sont synonymes et seront utilisées indifféremment.In the present application, the terms "zone with a first coefficient of friction" and "zone with a low coefficient of friction" are synonymous and will be used interchangeably.

Dans la présente demande, les expressions « zone à deuxième coefficient de frottement » et « zone à fort coefficient de frottement » sont synonymes et seront utilisées indifféremment.In the present application, the terms "zone with a second coefficient of friction" and "zone with a high coefficient of friction" are synonymous and will be used interchangeably.

Le rapport entre le premier coefficient de frottement et le deuxième coefficient de frottement peut être compris entre 0 et 0,97, de préférence entre 0,1 et 0,43.The ratio between the first coefficient of friction and the second coefficient of friction can be between 0 and 0.97, preferably between 0.1 and 0.43.

Ainsi, les zones à faible coefficient de frottement et à fort coefficient de frottement peuvent être agencées sur chaque face de la feuille à la manière d'un damier, les zones à faible coefficient de frottement étant par exemple les cases blanches du damier, et les zones à fort coefficient de frottement les cases noires du damier.Thus, the zones with a low coefficient of friction and with a high coefficient of friction can be arranged on each face of the sheet in the manner of a checkerboard, the zones with a low coefficient of friction being, for example, the white squares of the checkerboard, and the areas with a high coefficient of friction the black squares of the checkerboard.

Sur une face, l'ensemble des zones à fort coefficient de frottement et à faible coefficient de frottement occupe la totalité d'une face.On one side, all areas with a high coefficient of friction and a low coefficient of friction occupy the entire face.

La feuille antidérapante de l'invention est donc généralement plate, à savoir que la différence d'épaisseur entre une zone à faible coefficient de frottement et une zone à fort coefficient de frottement est faible, par exemple comprise entre 50 % et 300%.The non-slip sheet of the invention is therefore generally flat, namely that the difference in thickness between a zone with a low coefficient of friction and a zone with a high coefficient of friction is low, for example between 50% and 300%.

Selon un mode de réalisation, la feuille antidérapante de l'invention peut avoir une épaisseur comprise entre 0,2 mm et 0,6 mm.According to one embodiment, the non-slip sheet of the invention may have a thickness of between 0.2 mm and 0.6 mm.

L'alternance de zones à faible coefficient de frottement et de zones à fort coefficient de frottement permet une diminution du traitement de surface nécessaire sur les faces de la feuille antidérapante, et donc un temps de production de la feuille réduit et un coût de production de la feuille réduit.The alternation of zones with a low coefficient of friction and areas with a high coefficient of friction makes it possible to reduce the surface treatment required on the faces of the non-slip sheet, and therefore a reduced sheet production time and a cost of production of the sheet. the reduced sheet.

Selon un mode de réalisation, les quadrillages sur les deux faces de la feuille sont identiques, c'est-à-dire ont les mêmes dimensions et configurations, les cases occupées par les zones à premier coefficient de frottement sur une première face étant occupées sur l'autre face par les zones à deuxième coefficient de frottement, et les cases occupées par les zones à deuxième coefficient de frottement sur la première face étant occupées sur l'autre face par les zones à premier coefficient de frottement.According to one embodiment, the grids on both sides of the sheet are identical, that is to say have the same dimensions and configurations, the spaces occupied by the zones with a first coefficient of friction on a first face being occupied on the other side by the zones with a second coefficient of friction, and the squares occupied by the zones with a second coefficient of friction on the first face being occupied on the other side by the zones with a first coefficient of friction.

Ainsi, les zones sont alternées entre les deux faces d'une même feuille. Un avantage de cette configuration est que des feuilles antidérapantes identiques peuvent être empilées et cerclées en paquets, la disposition des zones impliquant que lorsque les feuilles sont empilées avec toutes la même face tournée vers un même côté, les zones à fort coefficient de frottement d'une face d'une feuille seront en contact avec les zones à faible coefficient de frottement d'une face de la feuille adjacente dans l'empilement, ce qui garantit un frottement réduit entre les deux feuilles et permet donc de les détacher facilement en utilisation par un opérateur qui les prend individuellement à partir d'une pile. Une mécanisation de la pose des feuilles à partir d'une pile peut aussi plus facilement être envisagée.Thus, the zones are alternated between the two faces of the same sheet. An advantage of this configuration is that identical slip-resistant sheets can be stacked and bundled, the arrangement of the zones implying that when the sheets are stacked with all the same side facing the same side, the areas with a high coefficient of friction of one side of a sheet will be in contact with the low friction zones of one face of the adjacent sheet in the stack, which ensures reduced friction between the two sheets and thus allows them to be easily detached in use by an operator who takes them individually from a stack. A mechanization of the laying of leaves from a pile can also be more easily considered.

Selon un mode de réalisation, chaque zone à deuxième coefficient de frottement occupe la totalité de la surface de la case du quadrillage dans laquelle elle est située.According to one embodiment, each zone with a second coefficient of friction occupies the entire surface of the square of the grid in which it is located.

Ainsi, pour un quadrillage régulier, des cases sont formées et chaque zone à fort coefficient de frottement occupe la totalité de sa case.Thus, for a regular grid, boxes are formed and each zone with a high coefficient of friction occupies the whole of its box.

Le quadrillage peut notamment être, par exemple, à cases carrées, en forme de losange ou encore en nid d'abeilles.The grid may in particular be, for example, squared boxes, diamond-shaped or honeycomb.

Selon un mode de réalisation, chaque zone à deuxième coefficient de frottement occupe une partie centrale de la surface de la case du quadrillage dans laquelle elle est située, la partie périphérique autour de la partie centrale dans la case étant constituée par une surface à premier coefficient de frottement.According to one embodiment, each zone with a second coefficient of friction occupies a central part of the surface of the square of the grid in which it is situated, the peripheral part around the central part in the box consisting of a surface with a first coefficient friction.

Les zones à fort coefficient de frottement peuvent occuper entre 20% et 50% de la face d'une feuille antidérapante selon la présente invention.Areas with a high coefficient of friction may occupy between 20% and 50% of the face of a non-slip sheet according to the present invention.

Selon un mode de réalisation, la zone à deuxième coefficient de frottement a la forme d'un carré, d'un rectangle, d'un rond, d'un polygone, d'un polygone régulier ou toute autre forme à l'intérieur de la case du quadrillage correspondante.According to one embodiment, the zone with a second coefficient of friction has the form of a square, a rectangle, a circle, a polygon, a regular polygon or any other shape within the corresponding grid box.

La forme carrée de la zone à fort coefficient de frottement produit avantageusement un meilleur frottement mécanique, et permet d'avoir deux directions de frottement (suivant les côtés des carrés) avec les cartons ou objets entre les couches desquels sont disposées les feuilles antidérapantes selon l'invention.The square shape of the zone with a high coefficient of friction advantageously produces better mechanical friction, and makes it possible to have two directions of friction (along the sides of the squares) with the cartons or objects between the layers of which the non-slip sheets are arranged according to the 'invention.

Selon un mode de réalisation, la feuille est rectangulaire ou carrée, les lignes du quadrillage étant parallèles aux bords de la feuille. Le quadrillage s'apparente alors, comme indiqué en exemple plus haut, à un damier.According to one embodiment, the sheet is rectangular or square, the grid lines being parallel to the edges of the sheet. The grid is then similar, as indicated in the example above, to a checkerboard.

Selon un mode de réalisation, les zones à premier coefficient de frottement sont lisses, notamment au toucher : la rugosité est alors uniquement due pour ces zones lisses à l'orientation des fibres de cellulose à la surface de la feuille.According to one embodiment, the zones with a first coefficient of friction are smooth, especially to the touch: the roughness is then only due to these smooth zones to the orientation of the cellulose fibers on the surface of the sheet.

Les zones à fort coefficient de frottement sont obtenues par traitement de surface de la feuille, les zones à faible coefficient de frottement étant les zones non traitées de la feuille antidérapante.Areas with a high coefficient of friction are obtained by surface treatment of the sheet, the areas of low friction being the untreated areas of the non-slip sheet.

Selon un mode de réalisation, les zones à deuxième coefficient de frottement présentent une pluralité de reliefs, obtenus par traitement de surface mécanique. L'ensemble des reliefs permet d'obtenir le fort coefficient de frottement.According to one embodiment, the zones with a second coefficient of friction have a plurality of reliefs, obtained by mechanical surface treatment. All of the reliefs make it possible to obtain the high coefficient of friction.

Selon un mode de réalisation, les reliefs sont des picots uniformément répartis sur chaque zone à deuxième coefficient de frottement. En particulier, les picots peuvent avoir une hauteur de 0,2 mm, et sont répartis à une densité comprise entre 30 picots/cm2 et 60 picots/cm2, de préférence de 45 picots/cm2.According to one embodiment, the reliefs are studs uniformly distributed over each zone with a second coefficient of friction. In particular, the barbs may have a height of 0.2 mm, and are distributed at a density of between 30 barbs / cm 2 and 60 barbs / cm 2 , preferably 45 barbs / cm 2 .

Les picots peuvent avoir un diamètre compris entre 0,2 et 0,6 mm, de préférence de 0,33 mm. Les picots peuvent avantageusement être colorés.The pins may have a diameter of between 0.2 and 0.6 mm, preferably 0.33 mm. The pins may advantageously be colored.

Les reliefs ou picots sont obtenus par un traitement de surface à partir d'une feuille de surface lisse, les reliefs/picots étant formés sur la feuille par des rouleaux gravés, selon un traitement de surface mécanique.The reliefs or pins are obtained by a surface treatment from a smooth surface sheet, the reliefs / pins being formed on the sheet by engraved rollers, according to a mechanical surface treatment.

Selon un mode de réalisation, les reliefs ont une hauteur à partir de la surface de la feuille comprise entre 0,07 mm et 0,3 mm, de préférence entre 0,12 mm et 0,17 mm.According to one embodiment, the reliefs have a height from the surface of the sheet of between 0.07 mm and 0.3 mm, preferably between 0.12 mm and 0.17 mm.

On obtient ainsi, pour les zones à fort coefficient de frottement, une rugosité moyenne de surface comprise entre 8 µm et 33 µm, de préférence de 17 µm, et pour les zones à faible coefficient de frottement, une rugosité moyenne de surface comprise entre 0 µm et 13 µm, de préférence de 9 µm.Thus, for areas with a high coefficient of friction, an average surface roughness of between 8 μm and 33 μm, preferably 17 μm, and for zones with a low coefficient of friction, an average surface roughness of between 0 is obtained. μm and 13 μm, preferably 9 μm.

A titre d'exemple, des dimensions possibles pour une feuille selon l'invention sont 120 x 80 cm, 114 x 94 cm ou 55 x 60 cm ; des formats plus grands ou plus petits sont également envisageables.By way of example, possible dimensions for a sheet according to the invention are 120 × 80 cm, 114 × 94 cm or 55 × 60 cm; larger or smaller formats are also possible.

Pour mieux illustrer l'objet de la présente invention, on va en décrire ci-après, à titre illustratif et non limitatif, un mode de réalisation particulier en référence aux dessins annexés.To better illustrate the object of the present invention will be described below, by way of illustration and not limited to, a particular embodiment with reference to the accompanying drawings.

Sur ces dessins :

  • les Figures 1A et 1B sont des vues schématiques respectivement d'une première face et d'une deuxième face d'une feuille antidérapante selon un premier mode de réalisation de l'invention ;
  • les Figures 2A et 2B sont des vues schématiques respectivement d'une première face et d'une deuxième face d'une feuille antidérapante selon un deuxième mode de réalisation de l'invention ;
On these drawings:
  • the Figures 1A and 1B are schematic views respectively of a first face and a second face of a non-slip sheet according to a first embodiment of the invention;
  • the Figures 2A and 2B are schematic views respectively of a first face and a second face of a non-slip sheet according to a second embodiment of the invention;

Si l'on se réfère aux Figures 1A et 1B, on peut voir que l'on y a représenté une feuille antidérapante 1 selon un premier mode de réalisation, la Figure 1A représentant l'une des faces de ladite feuille antidérapante 1 et la Figure 1B représentant l'autre face de ladite feuille antidérapante 1.If we refer to Figures 1A and 1B it can be seen that there is shown a non-slip sheet 1 according to a first embodiment, the Figure 1A representing one of the faces of said sheet anti-slip 1 and the Figure 1B representing the other side of said non-slip sheet 1.

Comme on peut le voir sur les Figures 1A et 1B, chaque face présente des zones à faible coefficient de frottement 2, schématiquement représentées en blanc, et des zones à fort coefficient de frottement 3, schématiquement représentées en noir, agencées à la manière d'un damier, c'est-à-dire que les zones à faible coefficient de frottement 2 et les zones à fort coefficient de frottement 3 sont disposées de manière alternée pour recouvrir toute la surface de chaque face de la feuille antidérapante 1, les zones à faible coefficient de frottement 2 et les zones à fort coefficient de frottement 3 étant décalées entre les deux faces afin que lors de l'empilement de plusieurs feuilles antidérapantes 1, les zones à fort coefficient de frottement 3 d'une feuille ne soient pas en contact avec les zones à fort coefficient de frottement 3 de la feuille sur/sous laquelle elle est empilée.As can be seen on the Figures 1A and 1B each face has zones with a low coefficient of friction 2, schematically represented in white, and zones with a high coefficient of friction 3, schematically represented in black, arranged in the manner of a checkerboard, that is to say that the zones with a low coefficient of friction 2 and areas with a high coefficient of friction 3 are alternately arranged to cover the entire surface of each face of the non-slip sheet 1, the zones with a low coefficient of friction 2 and the zones with a high coefficient friction 3 being offset between the two faces so that during the stacking of several non-slip sheets 1, the areas with a high coefficient of friction 3 of a sheet are not in contact with the areas with a high coefficient of friction 3 of the sheet on / under which she is stacked.

Dans le mode de réalisation des Figures 1A et 1B, les zones à fort coefficient de frottement 3 et les zones à faible coefficient de frottement 2 ont la même surface.In the embodiment of Figures 1A and 1B areas with a high coefficient of friction 3 and zones with a low coefficient of friction 2 have the same surface area.

Un deuxième mode de réalisation est représenté schématiquement sur les Figures 2A et 2B. Selon ce mode de réalisation, la feuille antidérapante 10 comporte également des zones à faible coefficient de frottement 20 et des zones à fort coefficient de frottement 30, agencées de manière similaire au premier mode de réalisation, à l'exception près que les zones à fort coefficient de frottement 30 ont une surface inférieure aux zones à faible coefficient de frottement 20.A second embodiment is shown schematically on the Figures 2A and 2B . According to this embodiment, the non-slip sheet 10 also comprises areas with a low coefficient of friction 20 and zones with a high coefficient of friction 30, arranged in a manner similar to the first embodiment, with the exception that the zones with high friction coefficient of friction 30 have a lower surface area with low coefficient of friction 20.

Bien que les modes de réalisation portent sur des zones à fort coefficient de frottement en forme de carré, toute forme de zone à fort coefficient de frottement (ronde, octogonale, etc...) est envisagée dans le cadre de la présente invention, pourvu que chaque zone à fort coefficient de frottement soit contenue dans des cases alternées d'un quadrillage qui divise chaque face de la feuille antidérapante de la présente invention.Although the embodiments relate to zones with a high coefficient of friction in the form of a square, any form of zone with a high coefficient of friction (Round, octagonal, etc ...) is envisaged within the framework of the present invention, provided that each area with a high coefficient of friction is contained in alternating squares of a grid that divides each face of the non-slip sheet of the present invention. invention.

De même, le quadrillage décrit dans les modes de réalisation a ses lignes et ses colonnes parallèles aux côtés de la feuille, mais un quadrillage dont les lignes formeraient un angle avec les côtés de la feuille entre également dans le cadre de la présente invention.Similarly, the gridlines described in the embodiments have its lines and columns parallel to the sides of the sheet, but a grid line whose lines would form an angle with the sides of the sheet is also within the scope of the present invention.

En outre, la proportion de surface de zones à fort coefficient de frottement par rapport à la surface de zones à faible coefficient de frottement n'est pas limitée par le présent exemple, et toute proportion est envisageable dans le cadre de la présente invention.In addition, the proportion of area of areas with a high coefficient of friction relative to the area of areas with a low coefficient of friction is not limited by the present example, and any proportion is conceivable within the scope of the present invention.

Un essai comparatif de la feuille antidérapante selon la présente invention a été réalisé par la société Demanderesse.A comparative test of the non-slip sheet according to the present invention was carried out by the Applicant Company.

L'essai comparatif consistait à empiler des cartons sur une palette et à tester jusqu'à quel angle la palette pouvait être inclinée avant que les cartons ne tombent de la palette par glissement.The comparative test consisted of stacking cartons on a pallet and testing to what angle the pallet could be tilted before the cartons fell off the pallet.

Dans un premier essai, les cartons ont été empilés sans aucune feuille antidérapante. L'angle maximal d'inclinaison de la palette avant que les cartons ne glissent de la palette a alors été mesuré à 14° par rapport à l'horizontale.In a first test, the cartons were stacked without any slip sheet. The maximum angle of inclination of the pallet before the cartons slip from the pallet was then measured at 14 ° to the horizontal.

Dans un deuxième essai, une couche de feuilles antidérapantes entièrement revêtues a été disposée entre chaque rangée de cartons. L'angle maximal d'inclinaison de la palette avant que les cartons ne glissent de la palette a alors été mesuré à 28° par rapport à l'horizontale.In a second test, a layer of fully coated non-slip sheets was placed between each row of cartons. The maximum angle of inclination of the pallet before the cartons slip from the pallet was then measured at 28 ° to the horizontal.

Dans un troisième essai, une couche de feuilles antidérapantes selon l'invention a été disposée sous chaque rangée de cartons. L'angle maximal d'inclinaison de la palette avant que les cartons ne glissent de la palette a alors été mesuré à 25° par rapport à l'horizontale.In a third test, a layer of non-slip sheets according to the invention was placed under each row of boxes. The maximum angle of inclination of the pallet before the cartons slip from the pallet was then measured at 25 ° to the horizontal.

On constate des performances antidérapantes de la feuille selon la présente invention quasi identiques à celles de la feuille antidérapante de l'état antérieur de la technique, avec un coût de fabrication bien inférieur, en raison du fait qu'une partie seulement de la feuille antidérapante est traitée pour être antidérapante.The antiskid performance of the sheet according to the present invention is found to be almost identical to that of the antiskid sheet of the prior art, with a much lower manufacturing cost, due to the fact that only a part of the non-slip sheet is treated to be slip resistant.

Claims (10)

Feuille antidérapante (1 ; 10), traitée en surface pour présenter une alternance de zones ayant un premier coefficient de frottement (2 ; 20) et de zones ayant un deuxième coefficient de frottement (3 ; 30), le premier coefficient de frottement étant inférieur au deuxième coefficient de frottement, caractérisée par le fait qu'elle est plate et que chacune des deux faces de la feuille (1 ; 10) est divisée selon un quadrillage, chaque case du quadrillage étant occupée par l'une d'une zone à premier coefficient de frottement (2 ; 20) ou d'une zone à deuxième coefficient de frottement (3 ; 30), et deux cases adjacentes du quadrillage étant occupées par des zones à coefficients de frottement différents.Non-slip sheet (1; 10), surface treated to have alternating areas having a first coefficient of friction (2; 20) and areas having a second coefficient of friction (3; 30), the first coefficient of friction being lower at the second coefficient of friction, characterized in that it is flat and each of the two faces of the sheet (1; 10) is divided according to a grid, each box of the grid being occupied by one of a zone to first coefficient of friction (2; 20) or a zone with a second coefficient of friction (3; 30), and two adjacent squares of the grid being occupied by zones with different coefficients of friction. Feuille antidérapante (1 ; 10) selon la revendication 1, caractérisée par le fait que les quadrillages sur les deux faces de la feuille (1 ; 10) sont identiques, les cases occupées par les zones à premier coefficient de frottement (2 ; 20) sur une première face étant occupées sur l'autre face par les zones à deuxième coefficient de frottement (3 ; 30), et les cases occupées par les zones à deuxième coefficient de frottement (3 ; 30) sur la première face étant occupées sur l'autre face par les zones à premier coefficient de frottement (2 ; 20).Non-slip sheet (1; 10) according to claim 1, characterized in that the grids on both sides of the sheet (1; 10) are identical, the squares occupied by the zones with a first coefficient of friction (2; 20) on a first face being occupied on the other side by the zones with a second coefficient of friction (3; 30), and the squares occupied by the zones with a second coefficient of friction (3; 30) on the first face being occupied on the other face by the zones with a first coefficient of friction (2; 20). Feuille antidérapante (1 ; 10) selon l'une des revendications 1 ou 2, caractérisée par le fait que chaque zone à deuxième coefficient de frottement (3 ; 30) occupe la totalité de la surface de la case du quadrillage dans laquelle elle est située.Non-slip sheet (1; 10) according to one of claims 1 or 2, characterized in that each zone with a second coefficient of friction (3; 30) occupies the entire surface of the grid box in which it is situated . Feuille antidérapante (1 ; 10) selon l'une des revendications 1 ou 2, caractérisée par le fait que chaque zone à deuxième coefficient de frottement (3 ; 30) occupe une partie centrale de la surface de la case du quadrillage dans laquelle elle est située, la partie périphérique étant constituée par une surface à premier coefficient de frottement.Non-slip sheet (1; 10) according to one of claims 1 or 2, characterized in that each zone with a second coefficient of friction (3; 30) occupies a central part of the surface of the square of the grid in which it is located, the peripheral part being constituted by a surface with a first coefficient of friction. Feuille antidérapante (1 ; 10) selon la revendication 4, caractérisée par le fait que la zone à deuxième coefficient de frottement (3 ; 30) a la forme d'un carré, d'un rectangle, d'un rond, d'un polygone, d'un polygone régulier.Non-slip sheet (1; 10) according to claim 4, characterized in that the zone with a second coefficient of friction (3; 30) is in the form of a square, a rectangle, a circle, a polygon, of a regular polygon. Feuille antidérapante (1 ; 10) selon l'une des revendications 1 à 5, caractérisée par le fait que la feuille (1 ; 10) est rectangulaire ou carrée, les lignes du quadrillage étant parallèles aux bords de la feuille (1 ; 10) .Non-slip sheet (1; 10) according to one of claims 1 to 5, characterized in that the sheet (1; 10) is rectangular or square, the grid lines being parallel to the edges of the sheet (1; 10) . Feuille antidérapante (1 ; 10) selon l'une des revendications 1 à 6, caractérisée par le fait que les zones à premier coefficient de frottement (2 ; 20) sont lisses.Non-slip sheet (1; 10) according to one of claims 1 to 6, characterized in that the areas with a first coefficient of friction (2; 20) are smooth. Feuille antidérapante (1 ; 10) selon l'une des revendications 1 à 7, caractérisée par le fait que les zones à deuxième coefficient de frottement (3 ; 30) présentent une pluralité de reliefs, obtenus par traitement de surface mécanique.Non-slip sheet (1; 10) according to one of claims 1 to 7, characterized in that the zones with a second coefficient of friction (3; 30) have a plurality of reliefs obtained by mechanical surface treatment. Feuille antidérapante (1 ; 10) selon la revendication 8, caractérisée par le fait que les reliefs sont des picots uniformément répartis sur chaque zone à deuxième coefficient de frottement (3 ; 30).Non-slip sheet (1; 10) according to claim 8, characterized in that the reliefs are studs uniformly distributed over each zone with a second coefficient of friction (3; 30). Feuille antidérapante (1 ; 10) selon l'une des revendications 8 ou 9, caractérisée par le fait que les reliefs ont une hauteur à partir de la surface de la feuille (1 ; 10) comprise entre 0,07 mm et 0,3 mm, de préférence entre 0,12 mm et 0,17 mm.Non-slip sheet (1; 10) according to one of claims 8 or 9, characterized in that the reliefs have a height from the surface of the sheet (1; 10) between 0.07 mm and 0.3 mm, preferably between 0.12 mm and 0.17 mm.
EP14172204.1A 2013-06-12 2014-06-12 Non-slip sheet Active EP2813618B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1355461A FR3007045B1 (en) 2013-06-12 2013-06-12 NON-SLIP SHEET

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097989A (en) * 1959-12-28 1963-07-16 Lawrence Paper Co Manufacture of slip-resistant paper
US3776145A (en) * 1972-03-27 1973-12-04 Best Quality Plastics Inc Slip pallet
WO1989001446A1 (en) * 1987-08-18 1989-02-23 A. Ahlstrom Corporation Friction surface for packing foil or like with friction surface
US5570643A (en) 1994-08-18 1996-11-05 Werner; Gary D. Pull sheet pallet with collapsible nub structures
US5993936A (en) * 1997-09-12 1999-11-30 Nsw Corporation Anti-slip device and method
US20090065141A1 (en) * 2006-03-16 2009-03-12 Friedrich Kerber Method for producing a non-slip coating

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097989A (en) * 1959-12-28 1963-07-16 Lawrence Paper Co Manufacture of slip-resistant paper
US3776145A (en) * 1972-03-27 1973-12-04 Best Quality Plastics Inc Slip pallet
WO1989001446A1 (en) * 1987-08-18 1989-02-23 A. Ahlstrom Corporation Friction surface for packing foil or like with friction surface
US5570643A (en) 1994-08-18 1996-11-05 Werner; Gary D. Pull sheet pallet with collapsible nub structures
US5993936A (en) * 1997-09-12 1999-11-30 Nsw Corporation Anti-slip device and method
US20090065141A1 (en) * 2006-03-16 2009-03-12 Friedrich Kerber Method for producing a non-slip coating

Also Published As

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DK2813618T3 (en) 2017-05-01
FR3007045B1 (en) 2015-09-04
FR3007045A1 (en) 2014-12-19
EP2813618B1 (en) 2017-01-25

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