EP0668396B1 - Procédé pour la réalisation de carton muni de properiétés anti-glisse - Google Patents
Procédé pour la réalisation de carton muni de properiétés anti-glisse Download PDFInfo
- Publication number
- EP0668396B1 EP0668396B1 EP19950420019 EP95420019A EP0668396B1 EP 0668396 B1 EP0668396 B1 EP 0668396B1 EP 19950420019 EP19950420019 EP 19950420019 EP 95420019 A EP95420019 A EP 95420019A EP 0668396 B1 EP0668396 B1 EP 0668396B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- paper
- microspheres
- board
- coating
- coated
- 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
Links
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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
- 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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
- D21H27/40—Multi-ply at least one of the sheets being non-planar, e.g. crêped
Definitions
- the invention relates to a new method for carrying out cardboard, and in particular corrugated cardboard, at least one of the faces has anti-slip properties.
- the invention also relates to the cardboard, in continuous form or in the form of plates, provided with such properties, obtained by this process.
- anti-slip properties we mean the properties developed by certain supports, such as in particular papers, films, nonwovens, etc., which although free of glue or any other adhesive system analogous, have some resistance when positioned on their dish on any coating, they are subjected to a displacement on and parallel to this coating. In fact, these properties are generally sought after when the supports are positioned on smooth coatings or, in the field of packaging, transport and packaging.
- pallet dividers made of corrugated cardboard, chipboard or in another type of cellulosic material, have the disadvantage of present slippery faces, and in any case devoid of properties grip or anti-slip likely to oppose the movement of products they receive, and therefore risk causing damage to these products thus packaged during handling and transport.
- dividers made of corrugated cardboard at least one of which of the faces is treated with adhesive products, colloidal silicas, paraffins, colloidal alumina suspensions. These compounds of treatment are generally deposited on the corrugated cardboard at the outlet of corrugating line using traditional sponge type equipment, with coating roller equipment, or using a group flexographic.
- such a method consists in coating at least one of the faces of a sheet of paper running through a coating layer made of a thermoplastic resin containing microspheres hollow, whose envelope is made of a polymer also thermo-plastic, and whose core contains a volatile fluid, the coating taking place at a temperature below the temperature of change of phase or volume expansion of said fluid.
- Leaf thus formed is then subjected to its own heat treatment on the one hand, to induce the softening of the thermoplastic resin containing the microspheres, but also the softening of the constituent polymer of the envelope of said microspheres, and other part, to induce either the gas expansion, or the phase change of the fluid, resulting in either case in the expansion volume of said microspheres.
- the leaf thus treated is then subjected to a cooling phase, freezing the microspheres as well expanded to their final size, effectively imparting its anti-slip properties, inherent in the projections formed by said microspheres by relation to the general plan of the sheet.
- the invention aims to propose a method for producing cardboard corrugated with anti-slip properties overcoming these different disadvantages, and likely to also develop good printability properties and a pleasant touch.
- the two faces of the carton are endowed with anti-slip properties, the second sheet of cardboard being in this case also previously coated according to the process described previously.
- Figure 1 is a schematic representation of an installation known coating a sheet of paper.
- Figure 2 is a schematic representation of an installation for the production of corrugated cardboard.
- Figure 3 is a representation of a sheet of cardboard having anti-slip properties on both sides, obtained using the the invention.
- It basically comprises a reel (1) on which is mounted a reel of paper, such as in particular Kraft-unbleached paper, for example of grammage 150 g / m 2 .
- This scrolling paper is kept under slight mechanical tension by means of conventional systems, and is brought by means of positive delivery rollers (10) to a coating zone (6), respectively comprising deflection rollers (7 , 8), and a coating roller (5), plunging into a coating tank (4) containing the coating composition (3), as described in Table I below.
- the excess coating composition on the paper (2) is removed with by means of a squeegee or an air knife (9), the pressure of which can be adjusted in order to obtain a more or less thick coating layer large and uniform, the excess composition falling back into the tank coating (4).
- the coating temperature is lower than the temperature expansion of the volatile gas contained in the microspheres.
- the coated paper (12) is then dried, to allow the evaporation of water or solvent contained in the coating composition.
- a paper coated with a thermoplastic resin is thus obtained and microspheres containing a volatile gas or liquid having a diameter between 5 and 20 ⁇ m.
- This paper behaves like a plain paper and has no anti-slip properties.
- the paper (12) thus coated is stored again in the form of a coil (11), capable of being transferred to the installation level for the manufacture of corrugated cardboard, as shown in Figure 2.
- the coated paper (12) is therefore unwound from the reel (11), placed on a reel, and tensioned by traditional return rollers (13), then is routed to multiple rollers (17) at which the uncoated side receives on the one hand, the intermediate fluting paper (16), and on the other hand, the other sheet of support paper (20) constituting said cardboard.
- the intermediate groove paper comes from a reel (14) of paper, undergoing in (15) the shaping of grooves, said paper groove (16) then being routed to the device (17).
- the other sheet of paper (20) constituting the cardboard is routed via idler rollers (19) from a storage reel (18) to the device (17).
- the assembly thus constituted namely coated sheet of paper (12), intermediate corrugated paper (16) and other support sheet (20), not still joined together, is routed at a glue bath (28), intended to allow the gluing of the intermediate groove paper (16) at the two internal faces of the external support sheets, respectively (12) and (20).
- the assembly (21) thus glued is routed to an enclosure heated (22), intended to ensure the drying of the adhesive, the adjustment of the heating being provided by a traditional device (23), consisting of electrical resistances or an infrared source.
- This drying phase also makes it possible to evaporate the residual water. contained in the coating composition of the coated paper (12), and is adjusted so that the coated sheet of paper (12) reaches a paper temperature above 90 ° C.
- the constituent copolymer microspheres softens.
- the gas contained in said microspheres expands, inducing given the softening of the envelope of the microspheres the swelling of these so that these reach a diameter of around 40 to 60 ⁇ m, or even 100 ⁇ m.
- the temperature also induces softening of the resin coating, so that despite having expanded, said microspheres remain attached to the support.
- positive rollers (24) ensure the progression of the corrugated cardboard thus produced, transporting it to a level cutting device (25), in order to allow the cardboard to be cut according to a programmable format, and storage of cardboard sheets as a stack (26), adjustable in height by a suitable device (27).
- the two sheets of backing paper enclosing the cardboard sheet intermediate groove of the cardboard can be coated beforehand, before the cardboard is properly formed said, so as to obtain a carton whose two faces develop anti-slip properties, and for example shown in FIG. 3.
- the cardboard sheets thus produced are particularly adapted for use as dividers, in particular for packaging, and packaging of large loads, thus making it possible to store on relatively large heights, products of various natures, without risk of destruction of the batteries especially during transport and other handling.
- the method used to produce such sheets of corrugated cardboard is achievable with installations of production of traditional cardboard, adjusting the heating conditions allowing the expansion of microspheres sufficiently, but not excessively.
- a temperature of 150 ° C allowed for example, to make a cardboard corrugated with good anti-slip properties, and good flatness at a speed of 120 m / min.
- Aqueous coating compositions are prepared with different compounds indicated in Table I below. The quantities are expressed as a percentage by weight.
- the microspheres are made up by hollow capsules made, for example, of polyvinylidene, or as a polyvinylidene chloride copolymer - acrylonitrile. They contain pentane, neopentane or isobutane. Their diameter is between 5 and 20 ⁇ m.
- the composition coating also comprises a thermo-plastic binder resin, by example a styrene-butadiene latex, an ethylene acrylic copolymer vinyl, acrylic resin, or any other thermoplastic resin preferably having a glass transition point of less than 25 ° C.
- the deposited coating composition may also contain other substances well known in the field of paper coating, such as dyes, pigments, plasticizers, antistatic agents, surfactants. , etc. .
- the weight deposited in dry quantity is approximately 3 to 5 g / m 2 ; the aqueous composition being deposited according to known techniques for coating paper (air knife coating, Meyer bar, engraved cylinder, etc.)
- a 300 g / m 2 Kraftliner paper is coated using an aqueous coating composition as described in Table I, preferably one of the composition referenced 2 to 6.
- the paper is then dried in a oven so as to evaporate the water without the paper itself reaching a temperature of 90 ° C. Since the microspheres are not expanded, the paper thus treated does not have anti-slip properties, and can therefore without difficulty be used on a corrugator for the production of corrugated cardboard.
- Two Kraftliner papers of 300 g / m 2 thus coated are used as support sheets on a corrugator, respectively in position (11) and (18) (figure 2), on either side of a third reel of interkraft of 120 g / m 2 , constituting the core of the groove.
- the glue, starch-based, used at 150 ° C has dried, the microspheres of the supports expand, thus giving the external faces of the corrugated board anti-slip properties, at the end of the corrugator, just before the automatic formatting installation ((25, 26, 27).
- a 150 g / m 2 Kraftliner coated according to the process described in Example 1, and used in position (11) ( Figure 2) of the corrugator, as well as an untreated 150 g / m 2 kraftliner used in position (18) allow under the same conditions to obtain a corrugated cardboard having anti-slip properties on only one of its faces.
- a 150 g / m 2 paper consisting of two jets of pulp, namely 100 g / m 2 of bleached pulp and 50 g / m 2 of unbleached pulp, is coated on the white face using a composition of aqueous coating of Table I, then is treated according to Example 1 and positioned in (11) on the corrugator of FIG. 2.
- a kraftliner of 150 g / m 2 is treated in an identical manner and used in position (18 ) on the corrugator of FIG. 2. According to the method described in Example 1, one thus obtains a corrugated cardboard whose two faces develop anti-slip properties, and which has a better aesthetic appearance, and capable of being printed in flexography directly on the corrugator.
- a 150 g / m 2 kraftliner is treated according to Example 1, then used in position (18) on the corrugator of FIG. 2.
- a 150 g / m 2 paper consisting of two jets of pulp, namely 100 g / m 2 of bleached pulp and 50 g / m 2 of unbleached pulp, is coated on the white face with a composition of coating in Table II and is positioned at (11) on the corrugator in Figure 2.
- a 150 g / m 2 kraftliner is treated identically and used in position (18) on the corrugator in Figure 2 .
- Example 1 According to the process described in Example 1, a cardboard is then obtained corrugated with two non-slip faces, and also allowing a very high quality flexographic printing.
Landscapes
- Laminated Bodies (AREA)
- Paper (AREA)
Description
- tout d'abord, à enduire une feuille de papier d'une composition d'enduction comprenant un solvant ou de l'eau, une résine thermo-plastique faisant office de liant, contenant des microsphères creuses dont l'enveloppe est réalisée en un polymère également thermo-plastique, et dont le coeur renferme un ou plusieurs fluides volatils, l'enduction s'effectuant à une température inférieure à la température de changement de phase ou d'expansion volumique dudit fluide ;
- à sécher le papier ainsi enduit à une température suffisante pour permettre l'évaporation de l'eau ou du solvant de ladite composition d'enduction, mais inférieure à la température susceptible de générer l'expansion des microsphères ;
- puis à utiliser le papier ainsi enduit et séché au niveau d'une installation de fabrication de carton ondulé (onduleuse), de telle sorte à servir de support inférieur et/ou supérieur dudit carton, la face enduite du papier étant dirigée vers l'extérieur du carton ainsi réalisé.
- et enfin à soumettre le carton ondulé ainsi réalisé à une phase de chauffage destinée, d'une part à assurer le séchage de la colle de solidarisation des feuilles constitutives du cartton, et d'autre part à permettre l'expansion volumique des microsphères de la couche d'enduction de ladite feuille de papier enduite, rendue possible par le ramollisement d'une part, de la résine thermo-plastique constitutive de la couche d'enduction et de l'enveloppe proprement dite des polymères constitutifs des microsphères.
Microsphères | Liant | Koalin | CaCO3 | CHC |
20 | 25 | 0 | 54 | 1 |
15 | 25 | 10 | 44 | 1 |
10 | 25 | 20 | 34 | 1 |
Claims (3)
- Procédé pour la réalisation de carton ondulé, dont l'une au moins des faces présente des propriétés anti-glisse caractérisé en ce qu'il consiste :tout d'abord, à enduire une feuille de papier (2) d'une composition d'enduction (3) comprenant un solvant ou de l'eau, une résine thermo-plastique faisant office de liant, contenant des microsphères creuses, dont l'enveloppe est réalisée en un polymère également thermo-plastique, et dont le coeur renferme un ou plusieurs fluides volatils, l'enduction s'effectuant à une température inférieure à la température de changement de phase ou d'expansion volumique dudit fluide;puis à sécher le papier (12) ainsi enduit à une température suffisante pour permettre l'évaporation de l'eau ou du solvant de ladite composition d'enduction (3), mais inférieure à la température susceptible de générer l'expansion des microsphères ;puis à utiliser le papier ainsi enduit et séché au niveau d'une installation de fabrication de carton ondulé, de telle sorte à servir de support inférieur et/ou supérieur dudit carton, la face enduite du papier étant dirigée vers l'extérieur du carton ondulé ainsi réalisé;et enfin à soumettre le carton ondulé ainsi réalisé à une phase de chauffage destinée, d'une part à assurer le séchage de la colle de solidarisation des feuilles ( 12, 16, 20) constitutives du carton, et d'autre part à permettre l'expansion volumique des microsphères de la couche d'enduction de ladite feuille de papier enduite pour développer des propriétés anti-glisse, rendue possible par le ramollisement d'une part, de la résine thermo-plastique constitutive de la couche d'enduction et de l'enveloppe proprement dite des polymères constitutifs des microsphères.
- Procédé pour la réalisation de feuilles de carton, dont l'une au moins des faces présente des propriétés anti-glisse selon la revendication 1, caractérisé en ce que les deux feuilles (12, 20) du carton enserrant la feuille de papier cannelure intermédiaire (16) sont préalablement enduite sur l'une de leur face de la composition d'enduction contenant les microsphères, susceptibles de s'expanser lors de la phase de séchage.
- Procédé pour la réalisation de feuilles de carton, dont l'une au moins des faces présente des propriétés anti-glisse selon l'une des revendications 1 et 2, caractérisé en ce que la feuille de carton (21) après la zone de séchage est découpée (25) selon un format paramètrable, puis stockée sur une pile (26) réglable en hauteur.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9402139A FR2716214B1 (fr) | 1994-02-17 | 1994-02-17 | Procédé pour la réalisation de carton muni de propriétés anti-glisse, et carton ainsi réalisé. |
FR9402139 | 1994-02-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0668396A1 EP0668396A1 (fr) | 1995-08-23 |
EP0668396B1 true EP0668396B1 (fr) | 1999-06-09 |
Family
ID=9460405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19950420019 Expired - Lifetime EP0668396B1 (fr) | 1994-02-17 | 1995-01-26 | Procédé pour la réalisation de carton muni de properiétés anti-glisse |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0668396B1 (fr) |
DE (1) | DE69510109T2 (fr) |
DK (1) | DK0668396T3 (fr) |
ES (1) | ES2135026T3 (fr) |
FR (1) | FR2716214B1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI4917U1 (fi) * | 2000-11-17 | 2001-05-16 | Petersonwalki Oy | Päällystetty pintapaperi ja pakkausmateriaali |
DE10312601A1 (de) * | 2003-03-21 | 2004-09-30 | Bhs Corrugated Maschinen- Und Anlagenbau Gmbh | Material-Bahn sowie Verfahren zur Herstellung von Wellpappe |
EP1481797A1 (fr) * | 2003-05-23 | 2004-12-01 | Casco Surfaces AB | Matériau stratifié et procédé de sa fabrication |
FR2868444B1 (fr) * | 2004-03-31 | 2006-06-02 | Cgp Auvergne Soc Par Actions S | Procede pour realiser un emballage en carton dote de proprietes anti-glisse et emballage en carton ainsi realise. |
WO2015184435A1 (fr) * | 2014-05-30 | 2015-12-03 | Worcester Polytechnic Institute | Séchage utilisant un matériau à changement de phase (pcm) |
ES2529560B1 (es) * | 2014-11-19 | 2015-11-20 | Enrique José BELDA FERRE | Procedimiento para la realización de un soporte plano impreso, con caracteristicas antideslizantes, a una o ambas caras, y producto así obtenido |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2395141A1 (fr) * | 1977-06-21 | 1979-01-19 | Centre Tech Ind Papier | Feuille antiderapante et procede pour l'obtenir |
US4753831A (en) * | 1986-02-10 | 1988-06-28 | Otsuka Foods Co., Ltd. | Cardboard container with anti-slip property |
JPH0655464B2 (ja) * | 1989-09-30 | 1994-07-27 | 凸版印刷株式会社 | 防滑性段ボールシート |
FR2673209B3 (fr) * | 1991-02-26 | 1992-12-24 | Elce Ets | Procede pour realiser un support presentant des proprietes anti-glisse et support ainsi obtenu. |
-
1994
- 1994-02-17 FR FR9402139A patent/FR2716214B1/fr not_active Expired - Lifetime
-
1995
- 1995-01-26 EP EP19950420019 patent/EP0668396B1/fr not_active Expired - Lifetime
- 1995-01-26 DE DE1995610109 patent/DE69510109T2/de not_active Expired - Lifetime
- 1995-01-26 DK DK95420019T patent/DK0668396T3/da active
- 1995-01-26 ES ES95420019T patent/ES2135026T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69510109T2 (de) | 1999-11-11 |
DE69510109D1 (de) | 1999-07-15 |
FR2716214B1 (fr) | 1996-07-26 |
FR2716214A1 (fr) | 1995-08-18 |
EP0668396A1 (fr) | 1995-08-23 |
DK0668396T3 (da) | 1999-12-13 |
ES2135026T3 (es) | 1999-10-16 |
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