EP1016756B1 - Process for making paper having anti-slip properties - Google Patents

Process for making paper having anti-slip properties Download PDF

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Publication number
EP1016756B1
EP1016756B1 EP99420253A EP99420253A EP1016756B1 EP 1016756 B1 EP1016756 B1 EP 1016756B1 EP 99420253 A EP99420253 A EP 99420253A EP 99420253 A EP99420253 A EP 99420253A EP 1016756 B1 EP1016756 B1 EP 1016756B1
Authority
EP
European Patent Office
Prior art keywords
paper
coating
process according
slip properties
web
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99420253A
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German (de)
French (fr)
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EP1016756A1 (en
Inventor
Dominique Dreyfus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Papeteries Matussiere et Forest SA
Original Assignee
Papeteries Matussiere et Forest SA
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Publication of EP1016756A1 publication Critical patent/EP1016756A1/en
Application granted granted Critical
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • 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
    • D21H21/50—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 characterised by form
    • D21H21/52—Additives of definite length or shape
    • D21H21/54—Additives of definite length or shape being spherical, e.g. microcapsules, beads
    • 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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/24—Addition to the formed paper during paper manufacture
    • D21H23/26—Addition to the formed paper during paper manufacture by selecting point of addition or moisture content of the paper

Definitions

  • the present invention relates to a manufacturing process a paper with anti-slip properties, as well as the paper obtained by this process.
  • Such paper is obtained in a traditional way on a machine to paper.
  • the paper is resumed to undergo a treatment allowing the deposition of a composition giving it anti-slip properties.
  • This treatment is carried out by transformers, regardless of the papermaking operation.
  • a composition comprising capsules made of a thermoplastic material, and containing themselves a product having a sticky effect (see documents EP-A-0 511 129 and FR-A-2 395 141). During coating and heating, these capsules burst, and allow the sticky product to ensure anti-slip function.
  • the object of the invention is to provide a manufacturing process of a paper having anti-slip properties, which is of a setting simple work, and which allows obtaining a paper whose properties anti-slip are perfectly homogeneous on both sides, and in the different paper directions, eliminating the need for the user to choose a direction of predetermined use to obtain the desired anti-slip properties.
  • the process which it relates to consists in carrying out a strip of paper in a manner known per se inside a paper, to carry out the drying of the paper at the pre-drying station, to carry out coating the paper on both sides with a composition viscous with anti-slip properties, while the paper strip is still at temperature, then pass the strip of paper through a post-drying station.
  • the temperature of the strip of paper, before coating is of the order of 80 ° to 100 ° C, and the temperature of the viscous composition, during coating, is around from 40 to 50 ° C.
  • the strip of paper passes, after coating, in a roller coater by transfer of movie.
  • a roller coater makes it possible to obtain a non-uniform spreading of the viscous composition, which improves its anti-slip properties.
  • Grooved rollers mark the surface condition of the paper further promoting the anti-slip character, and ensuring the paper a character anti-slip in different directions.
  • the starch is wheat starch transformed by enzymation, the gas is butane trapped in polyvinylidene chloride cells, and the inhibitor is zinc sulfate.
  • Figure 1 very schematically represents part of a paper making machine, the area to the left of Figure 1 being designated by the general reference 2 corresponding to the pre-drying station of a strip of paper 3 after formation thereof.
  • the band of paper 3 passes over a series of drying cylinders 4.
  • the paper strip is at a temperature of the order of 90 ° C.
  • the strip of paper then passes through rollers 5 from a coater to rollers, from top to bottom, immediately upstream of which is a tank 6 containing a viscous coating composition.
  • the coating is carried out on both sides of the strip.
  • This strip then passes over two fluted rollers 7, intended to act on the two layers of coating placed on either side of the coated paper, each grooved roller 7 having, as shown in FIG. 2, two 8 helical grooves starting from the center, and unwinding outwards.
  • drying cylinders belonging to the post-drying station of the machine papermaking. At the exit of the machine, the paper is thus obtained with a coating on both sides giving it anti-slip properties, perfectly homogeneous, in the long direction and in the cross direction.

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  • Paper (AREA)

Abstract

Preparation of paper with anti-slip properties comprises: (i) conventional preparation of paper in a machine; (ii) pre-drying the paper; (iii) coating both sides with a viscous composition having anti-slip properties while the paper is still warm; and (iv) passing the paper to the post-drying stage. An Independent claim is also included for anti-slip paper prepared using a viscous coating composition (A) that contains starch, capsules of gas trapped in a thermoplastic polymer, ammonia, a latex-based binder, an inhibitor, wax and/or talc and water.

Description

La présente invention a pour objet un procédé de fabrication d'un papier possédant des propriétés anti-glisse, ainsi que le papier obtenu par ce procédé.The present invention relates to a manufacturing process a paper with anti-slip properties, as well as the paper obtained by this process.

Lors du transport de marchandises posées sur un support, par exemple une palette, il se produit souvent un déplacement des marchandises les unes relativement aux autres, ce qui peut provoquer leur détérioration, notamment lorsque plusieurs marchandises sont superposées.When transporting goods placed on a support, by example a pallet, there is often a displacement of goods relative to each other, which can cause them to deterioration, especially when several goods are stacked.

A cet effet, il est déjà connu de faire reposer les marchandises sur des feuilles de papier possédant des propriétés anti-glisse.For this purpose, it is already known to rest the goods on sheets of paper with anti-slip properties.

Un tel papier est obtenu de façon traditionnelle sur une machine à papier. Dans un second temps, le papier est repris pour subir un traitement permettant le dépôt d'une composition lui conférant des propriétés anti-glisse. Ce traitement est effectué par des transformateurs, indépendamment de l'opération de fabrication du papier. Sur l'une des faces au moins du papier est déposée une composition comprenant des capsules réalisées en un matériau thermoplastique, et contenant elles-mêmes un produit possédant un effet collant (voir les documents EP-A-0 511 129 et FR-A-2 395 141). Lors de l'enduction et du chauffage, ces capsules éclatent, et permettent au produit collant d'assurer la fonction anti-glisse.Such paper is obtained in a traditional way on a machine to paper. In a second step, the paper is resumed to undergo a treatment allowing the deposition of a composition giving it anti-slip properties. This treatment is carried out by transformers, regardless of the papermaking operation. On one of at least on the sides of the paper is deposited a composition comprising capsules made of a thermoplastic material, and containing themselves a product having a sticky effect (see documents EP-A-0 511 129 and FR-A-2 395 141). During coating and heating, these capsules burst, and allow the sticky product to ensure anti-slip function.

Une telle solution est tout d'abord complexe à mettre en oeuvre, puisqu'il s'agit d'opérer plusieurs opérations successives en des lieux différents. En outre, les propriétés anti-glisse ne sont pas homogènes sur le produit, c'est-à-dire ne possèdent pas les mêmes valeurs dans les différents sens du papier, ni sur les deux faces de celui-ci.First of all, such a solution is complex to implement, since it involves operating several successive operations in places different. In addition, the anti-slip properties are not homogeneous on the product, i.e. do not have the same values in the different direction of the paper, nor on both sides of it.

Le but de l'invention est de fournir un procédé de fabrication d'un papier possédant des propriétés anti-glisse, qui soit d'une mise en oeuvre simple, et qui permette l'obtention d'un papier dont les propriétés anti-glisse sont parfaitement homogènes sur les deux faces, et dans les différents sens du papier, évitant à l'utilisateur d'avoir à choisir un sens d'utilisation prédéterminé pour obtenir les propriétés anti-glisse souhaitées.The object of the invention is to provide a manufacturing process of a paper having anti-slip properties, which is of a setting simple work, and which allows obtaining a paper whose properties anti-slip are perfectly homogeneous on both sides, and in the different paper directions, eliminating the need for the user to choose a direction of predetermined use to obtain the desired anti-slip properties.

A cet effet, le procédé qu'elle concerne, consiste à réaliser une bande de papier de façon connue en soi à l'intérieur d'une machine à papier, à réaliser le séchage du papier au poste de pré-séchage, à réaliser une enduction du papier sur ses deux faces à l'aide d'une composition visqueuse possédant des propriétés anti-glisse, alors que la bande de papier est encore en température, puis à faire passer la bande de papier dans un poste de post-séchage.To this end, the process which it relates to consists in carrying out a strip of paper in a manner known per se inside a paper, to carry out the drying of the paper at the pre-drying station, to carry out coating the paper on both sides with a composition viscous with anti-slip properties, while the paper strip is still at temperature, then pass the strip of paper through a post-drying station.

Les propriétés anti-glisse que possède le papier lui sont donc données au cours même de l'opération de fabrication du papier. Cela constitue une importante simplification par rapport à l'état de la technique connu.The anti-slip properties that paper possesses are therefore given during the papermaking process. it constitutes an important simplification compared to the state of the art known.

Suivant une caractéristique de ce procédé, la température de la bande de papier, avant enduction, est de l'ordre de 80° à 100°C, et la température de la composition visqueuse, lors de l'enduction, est de l'ordre de 40 à 50°C.According to a characteristic of this process, the temperature of the strip of paper, before coating, is of the order of 80 ° to 100 ° C, and the temperature of the viscous composition, during coating, is around from 40 to 50 ° C.

Le fait de réaliser l'enduction dans le processus même de fabrication du papier, permet de chauffer la bande de papier avant enduction, ce qui a pour effet de favoriser l'expansion et la montée en surface des éléments procurant au papier des propriétés anti-glisse, notamment les capsules, ce qui améliore les performances recherchées.The fact of coating in the very process of paper making, heat the paper strip before coating, which has the effect of promoting expansion and rise surface of the elements giving the paper anti-slip properties, especially the capsules, which improves the desired performance.

Suivant une autre caractéristique de l'invention, la bande de papier passe, après enduction, dans une coucheuse à rouleaux par transfert de film. La mise en oeuvre d'une coucheuse à rouleaux permet d'obtenir un étalement non uniforme de la composition visqueuse, ce qui améliore ses propriétés anti-glisse.According to another characteristic of the invention, the strip of paper passes, after coating, in a roller coater by transfer of movie. The use of a roller coater makes it possible to obtain a non-uniform spreading of the viscous composition, which improves its anti-slip properties.

En outre, la bande de papier passe ensuite sur des rouleaux cannelés.In addition, the paper strip then passes over rollers fluted.

Les rouleaux cannelés marquent l'état de surface du papier favorisant encore le caractère anti-glisse, et assurant au papier un caractère anti-glisse dans différents sens.Grooved rollers mark the surface condition of the paper further promoting the anti-slip character, and ensuring the paper a character anti-slip in different directions.

Suivant une caractéristique de ce procédé, la composition visqueuse conférant au papier des propriétés anti-glisse comprend :

  • de l'amidon,
  • des capsules de gaz emprisonnées dans un polymère thermoplastique,
  • de l'ammoniaque,
  • un liant à base de latex,
  • un inhibiteur,
  • de la cire et/ou du talc,
  • de l'eau.
According to a characteristic of this process, the viscous composition conferring on the paper anti-slip properties comprises:
  • starch,
  • gas capsules trapped in a thermoplastic polymer,
  • ammonia,
  • a latex-based binder,
  • an inhibitor,
  • wax and / or talc,
  • some water.

Il doit être noté que la mise en oeuvre de cire et/ou de talc procure à la composition un effet dilatant se traduisant par un phénomène de peau d'orange, ou de rayures en surface améliorant considérablement le coefficient de friction.It should be noted that the use of wax and / or talc gives the composition a dilating effect resulting in a phenomenon orange peel, or surface scratches considerably improving the coefficient of friction.

Suivant une autre caractéristique de ce procédé, l'amidon est de l'amidon de blé transformé par enzymation, le gaz est un butane emprisonné dans des alvéoles de chlorure de polyvinylidène, et l'inhibiteur est du sulfate de zinc.According to another characteristic of this process, the starch is wheat starch transformed by enzymation, the gas is butane trapped in polyvinylidene chloride cells, and the inhibitor is zinc sulfate.

Suivant un mode de mise en oeuvre de ce procédé, le produit d'enduction possède, pour les principaux composants, la composition pondérale suivante :

  • Amidon :   de 7 à 13 %
  • Capsules de gaz :   de 10 à 15 %
  • Ammoniaque :   0,5 %
  • Liant :   25 à 30 %
  • Cire :   1 à 2 %
  • Eau :   40 à 50 %.
According to one embodiment of this process, the coating product has, for the main components, the following weight composition:
  • Starch: from 7 to 13%
  • Gas capsules: 10 to 15%
  • Ammonia: 0.5%
  • Binder: 25 to 30%
  • Wax: 1 to 2%
  • Water: 40 to 50%.

Les figures 1 et 2 du dessin schématique annexé montrent l'agencement de quelques-uns des éléments constitutifs de la machine permettant l'obtention d'une bande de papier selon l'invention :

  • Figure 1 est une vue de côté de ces éléments ;
  • Figure 2 est une vue de face d'un rouleau cannelé destiné à répartir la composition d'enduction.
    • FIGS. 1 and 2 of the appended schematic drawing show the arrangement of some of the constituent elements of the machine enabling a strip of paper according to the invention to be obtained:
  • Figure 1 is a side view of these elements;
  • Figure 2 is a front view of a fluted roll intended to distribute the coating composition.

    • La figure 1 représente très schématiquement une partie d'une machine de fabrication du papier, la zone située à gauche de la figure 1 étant désignée par la référence générale 2 correspondant au poste de pré-séchage d'une bande de papier 3 après formation de celle-ci. La bande de papier 3 passe sur une série de cylindres 4 de séchage. A la sortie de ce poste, la bande de papier est à une température de l'ordre de 90°C. La bande de papier passe ensuite dans les rouleaux 5 d'une coucheuse à rouleaux, de haut en bas, immédiatement en amont de laquelle se trouve un bac 6 contenant une composition visqueuse d'enduction.Figure 1 very schematically represents part of a paper making machine, the area to the left of Figure 1 being designated by the general reference 2 corresponding to the pre-drying station of a strip of paper 3 after formation thereof. The band of paper 3 passes over a series of drying cylinders 4. At the end of this post, the paper strip is at a temperature of the order of 90 ° C. The strip of paper then passes through rollers 5 from a coater to rollers, from top to bottom, immediately upstream of which is a tank 6 containing a viscous coating composition.

    Cette composition comprend :

    • de l'amidon de blé transformé par enzymation,
    • des capsules de gaz butane emprisonné dans des alvéoles de chlorure de polyvinylidène,
    • un liant à base de latex,
    • du sulfate de zinc,
    • de la cire et/ou du talc,
    • de l'eau
    dans les proportions indiquées précédemment.This composition includes:
    • wheat starch transformed by enzymation,
    • butane gas capsules trapped in polyvinylidene chloride cells,
    • a latex-based binder,
    • zinc sulfate,
    • wax and / or talc,
    • some water
    in the proportions indicated above.

    L'enduction est réalisée sur les deux faces de la bande. Cette bande passe ensuite sur deux rouleaux cannelés 7, destinés à agir sur les deux couches d'enduction disposées de part et d'autre du papier enduit, chaque rouleau cannelé 7 possédant, comme montré à la figure 2, deux cannelures 8 hélicoïdales partant du centre, et se déroulant vers l'extérieur.The coating is carried out on both sides of the strip. This strip then passes over two fluted rollers 7, intended to act on the two layers of coating placed on either side of the coated paper, each grooved roller 7 having, as shown in FIG. 2, two 8 helical grooves starting from the center, and unwinding outwards.

    En aval de ces deux rouleaux cannelés, sont disposés des cylindres de séchage, appartenant au poste de post-séchage de la machine de fabrication du papier. En sortie de la machine, le papier est donc obtenu avec une enduction sur ses deux faces lui conférant des propriétés anti-glisse, parfaitement homogènes, dans le sens long et dans le sens travers.Downstream of these two fluted rollers, are arranged drying cylinders, belonging to the post-drying station of the machine papermaking. At the exit of the machine, the paper is thus obtained with a coating on both sides giving it anti-slip properties, perfectly homogeneous, in the long direction and in the cross direction.

    Claims (9)

    1. Process for manufacturing a paper possessing anti-slip properties, characterized in that it consists in producing a web of paper (3) in a manner known per se within a papermaking machine, in drying the paper in the predrying station (2), in coating (6) the paper on both sides with a viscous composition possessing anti-slip properties, while the web of paper is still at temperature, and then in making the web of paper pass through a postdrying station.
    2. Process according to Claim 1, characterized in that the temperature of the web of paper before coating is about 80 to 100°C.
    3. Process according to either of Claims 1 and 2, characterized in that the temperature of the viscous composition during coating is about 40 to 50°C.
    4. Process according to any one of Claims 1 to 3, characterized in that the web of paper, after coating, passes through a film-transfer roll coater (5).
    5. Process according to Claim 4, characterized in that the web of paper then passes over grooved rolls (7).
    6. Process according to any one of Claims 1 to 5, characterized in that the viscous coating composition giving the paper the anti-slip properties comprises:
      starch;
      gas capsules trapped in a thermoplastic polymer;
      aqueous ammonia;
      a latex-based binder;
      an inhibitor;
      wax and/or talc; and
      water.
    7. Process according to Claim 6, characterized in that the starch is wheat starch converted by enzyme action, the gas is a butane trapped in polyvinylidene chloride cavities and the inhibitor is zinc sulphate.
    8. Process according to Claim 7, characterized in that the coating composition possesses, as regards the main components, the following composition by weight:
      starch : from 7 to 13%;
      gas capsules : from 10 to 15%;
      aqueous ammonia : 0.5%;
      binder : 25 to 30%;
      wax : 1 to 2%; and
      water : 40 to 50%.
    9. Paper possessing anti-slip properties, characterized in that it includes the coating composition defined in Claims 6 to 8.
    EP99420253A 1998-12-29 1999-12-22 Process for making paper having anti-slip properties Expired - Lifetime EP1016756B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9816748A FR2787816B1 (en) 1998-12-29 1998-12-29 PROCESS FOR PRODUCING PAPER HAVING ANTI-SLIP PROPERTIES
    FR9816748 1998-12-29

    Publications (2)

    Publication Number Publication Date
    EP1016756A1 EP1016756A1 (en) 2000-07-05
    EP1016756B1 true EP1016756B1 (en) 2004-01-14

    Family

    ID=9534777

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99420253A Expired - Lifetime EP1016756B1 (en) 1998-12-29 1999-12-22 Process for making paper having anti-slip properties

    Country Status (4)

    Country Link
    EP (1) EP1016756B1 (en)
    AT (1) ATE257872T1 (en)
    DE (1) DE69914169T2 (en)
    FR (1) FR2787816B1 (en)

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP2737303B1 (en) 2011-07-28 2017-06-28 Paul Scherrer Institut Method for image fusion based on principal component analysis

    Family Cites Families (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2395141A1 (en) * 1977-06-21 1979-01-19 Centre Tech Ind Papier Slip resistant sheet comprising support - coated with paper coating compsn. contg. hollow microspheres of polyvinylidene chloride and opt. polyacrylonitrile
    US5032225A (en) * 1989-11-28 1991-07-16 Kanzaki Paper Mfg. Co., Ltd. Temperature controlled method of coating a paper web
    FR2675405B1 (en) * 1991-04-18 1994-10-14 Elce Ets PROCESS FOR PRODUCING A PLANAR SUPPORT OF WHICH ONE OF THE SIDES HAS ANTI-SLIP PROPERTIES AND OF WHICH THE OTHER HAS ADHESIVE PROPERTIES AND THE SUPPORT THUS OBTAINED.

    Also Published As

    Publication number Publication date
    DE69914169T2 (en) 2004-06-17
    ATE257872T1 (en) 2004-01-15
    EP1016756A1 (en) 2000-07-05
    DE69914169D1 (en) 2004-02-19
    FR2787816A1 (en) 2000-06-30
    FR2787816B1 (en) 2001-02-16

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