EP0815323A1 - Feuille papetiere et stratifies resistants a l'abrasion - Google Patents
Feuille papetiere et stratifies resistants a l'abrasionInfo
- Publication number
- EP0815323A1 EP0815323A1 EP97900636A EP97900636A EP0815323A1 EP 0815323 A1 EP0815323 A1 EP 0815323A1 EP 97900636 A EP97900636 A EP 97900636A EP 97900636 A EP97900636 A EP 97900636A EP 0815323 A1 EP0815323 A1 EP 0815323A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- particles
- sheet according
- coated
- laminate
- 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.)
- Granted
Links
- 238000005299 abrasion Methods 0.000 title claims abstract description 44
- 239000002245 particle Substances 0.000 claims abstract description 123
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229920000642 polymer Polymers 0.000 claims abstract description 17
- 239000003082 abrasive agent Substances 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 229910052582 BN Inorganic materials 0.000 claims abstract description 4
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 4
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims abstract description 3
- 229910000420 cerium oxide Inorganic materials 0.000 claims abstract description 3
- 239000011521 glass Substances 0.000 claims abstract description 3
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229920005989 resin Polymers 0.000 claims description 34
- 239000011347 resin Substances 0.000 claims description 34
- 238000000576 coating method Methods 0.000 claims description 30
- 239000011248 coating agent Substances 0.000 claims description 29
- 238000004519 manufacturing process Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 16
- 229920001187 thermosetting polymer Polymers 0.000 claims description 15
- 229920000877 Melamine resin Polymers 0.000 claims description 14
- 229920003043 Cellulose fiber Polymers 0.000 claims description 12
- 229920001519 homopolymer Polymers 0.000 claims description 8
- 229920001688 coating polymer Polymers 0.000 claims description 7
- 229920001577 copolymer Polymers 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 7
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 4
- -1 sihcium carbide Chemical compound 0.000 claims description 4
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 4
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 150000004676 glycans Chemical class 0.000 claims description 3
- 229920001282 polysaccharide Polymers 0.000 claims description 3
- 239000005017 polysaccharide Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 150000007513 acids Chemical class 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 229920003145 methacrylic acid copolymer Polymers 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- GZVHEAJQGPRDLQ-UHFFFAOYSA-N 6-phenyl-1,3,5-triazine-2,4-diamine Chemical compound NC1=NC(N)=NC(C=2C=CC=CC=2)=N1 GZVHEAJQGPRDLQ-UHFFFAOYSA-N 0.000 claims 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 239000010937 tungsten Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 9
- 239000000377 silicon dioxide Substances 0.000 abstract description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 abstract description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 abstract description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract 1
- 229910010271 silicon carbide Inorganic materials 0.000 abstract 1
- 239000000123 paper Substances 0.000 description 33
- 229910052500 inorganic mineral Inorganic materials 0.000 description 16
- 239000011707 mineral Substances 0.000 description 16
- 239000000047 product Substances 0.000 description 15
- 238000005470 impregnation Methods 0.000 description 10
- 239000012736 aqueous medium Substances 0.000 description 9
- 239000000945 filler Substances 0.000 description 9
- 239000000835 fiber Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000010030 laminating Methods 0.000 description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229920001131 Pulp (paper) Polymers 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 4
- 239000004793 Polystyrene Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 229920002223 polystyrene Polymers 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 238000005034 decoration Methods 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 239000002655 kraft paper Substances 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000012265 solid product Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229920001059 synthetic polymer Polymers 0.000 description 2
- 229920002101 Chitin Polymers 0.000 description 1
- 241000238424 Crustacea Species 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 150000001253 acrylic acids Chemical class 0.000 description 1
- 150000008360 acrylonitriles Chemical class 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 125000005907 alkyl ester group Chemical group 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000007590 electrostatic spraying Methods 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000004627 regenerated cellulose Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D11/02—Backings, e.g. foils, webs, mesh fabrics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C5/00—Processes for producing special ornamental bodies
- B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
- B44C5/0469—Ornamental plaques, e.g. decorative panels, decorative veneers comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper
- B44C5/0476—Ornamental plaques, e.g. decorative panels, decorative veneers comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper with abrasion resistant 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/69—Water-insoluble compounds, e.g. fillers, pigments modified, e.g. by association with other compositions prior to incorporation in the pulp or paper
-
- 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
- D21H27/18—Paper- or board-based structures for surface covering
- D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
- D21H27/26—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures
- D21H27/28—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures treated to obtain specific resistance properties, e.g. against wear or weather
Definitions
- the invention relates to a paper sheet comprising abrasive particles which give it high abrasion resistance in use.
- This sheet is used in particular in the manufacture of laminates, it gives them increased abrasion resistance on the surface.
- the invention also relates to the laminates comprising it as well as to the methods of manufacturing sheets and laminates.
- abrasion resistance can be characterized by the so-called TABER resistance, measured according to standard NF-EN 483-2 (1991) and expressed in number of turns.
- abrasion resistance For intensive domestic use of a laminate, its abrasion resistance must correspond to a TABER resistance of at least 4,000 turns and must reach 10,000 to 12,000 turns for use in public places.
- decorative panels so-called high pressure panels, so-called low pressure panels and panels covered with a sheet, called a finished sheet, adhesive.
- the so-called high pressure laminates are produced from a core consisting of sheets impregnated with resin. These sheets are generally made of kraft paper and have been impregnated with a thermosetting resin, most often a phenolic resin. After having impregnated the resin sheets, they are dried, cut, then stacked on top of each other. The number of sheets in the stack depends on the application and varies between 3 and 9, but may be higher.
- a decorative sheet is then placed on the pile of sheets constituting the core.
- a sheet is generally a sheet of paper bearing a printed or colored pattern or comprising decorative particles, impregnated with a thermosetting resin which does not blacken on heat, for example melamine-formaldehyde resins, benzoguanarnine resins. fo ⁇ naldehyde, unsaturated polyester resins; sometimes this sheet is not impregnated, the resin being provided by creep of the resin of the sheets which surrounds it.
- a protective cover sheet without pattern and transparent in the final laminate; in terms of profession, this protective sheet is called "over-lay" or "overlay”.
- the stack of impregnated sheets is then placed in a laminating press, the plates of which are provided with a sheet giving the surface finish to the laminate. Then, the cell is densified by heating, at a temperature of the order of 110 ° C to 170 ° C, and by pressing, at a pressure of the order of 5.5 MPa to 11 MPa, for approximately 25 to 35 minutes, to obtain a unitary structure.
- This structure is then fixed on a basic support, for example it is glued to a particle board.
- the so-called low pressure laminates are produced using only a decorative sheet impregnated with thermosetting resin and possibly an overlay sheet which is laminated directly on the base support during a short cycle, the temperature being of the order of 160 to 175 °. C and the pressure from 1.25 MPa to 1.6 MPa.
- the third kind of decorative panels consists of panels composed of a basic support, in general a panel of particles of wood or agglomerated fibers, and a sheet of decorative paper impregnated with a composition containing a binder or a melamine-formaldehyde resin and a polymer, fixed to the support by means of an adhesive
- the sheet of paper is a decorative sheet of uniform color or with decorative patterns.
- the color or the patterns are generally applied by printing on the sheet, before or after impregnation.
- We also apply a varnish or lacquer which aims to protect the surface of the sheet.
- An example of such a sheet, called finished sheet or impregnated sheet, and the decorative panel comprising it are described in patent application WO-A-9517551.
- the protective sheet called "overlay” is traditionally made by draining an aqueous suspension of unrefined cellulose fibers.
- This sheet has a low grammage, between 10 and 50 g / m 2 and is not opacified. It is impregnated with a thermosetting resin, which leads to its transparency in the final laminate and makes it possible to observe the decor of the laminate.
- the resin is most often chosen from melamine, urea or unsaturated polyester resins.
- This overlay sheet protects the surface of the laminate, in particular it increases its abrasion resistance because it allows an additional supply of thermosetting resin. To have a very high abrasion resistance, a heavy weight overlay sheet must be used, but this affects the good visibility of the decoration through this sheet.
- the particle size is as large as possible and / or to add these particles in large quantities.
- particles are known, in particular from the patent applications cited below, which have a certain abrasiveness and which have been more or less completely coated with another material.
- coatings comprising waxes, paraffins or fatty alcohols have been described for coating solid products used as additives for plastics or resins. This coating reduces the abrasive effect created by solid products, in particular by titanium oxide, on devices for manufacturing plastics or resins.
- This patent application therefore does not relate to a paper sheet and does not aim to obtain products resistant to abrasion.
- mineral particles have been described, including alumina or silica particles encapsulated in a polymer chosen in particular from polystyrenes and its derivatives, polymers of (meth) acrylic acid or of its alkyl esters, polyaciylamides, poh / acrylonitriles, poly (vinyl acetate).
- mineral particles have been described, including alumina or silica particles encapsulated in a copolymer of (meth) acrylic acid and a vinyl monomer.
- the coating treatment of the particles was carried out by a person skilled in the art to obtain a permanent coating of the particles and is not intended to provide a sheet containing these particles and which would have a high abrasion resistance and / or would confer such resistance on the surface of a product comprising it, during its use.
- the invention aims to solve the problems of the prior art of sheets resistant to abrasion by incorporating very abrasive fillers and laminates containing it.
- the main aim of the invention is to provide a paper sheet, in particular used for manufacturing decorative laminates, comprising abrasive particles, this sheet having a very high abrasion resistance and / or imparting such resistance to the product which comprises it. but whose manufacture of the sheet and / or of the product comprising it does not cause rapid wear of the paper machines and / or of manufacture of the product comprising it, in particular of the sheets of the laminating presses.
- Another object is that the distribution of the particles is uniform.
- Another object is that the abrasive particles do not disturb the transparency or the decorative effect of the sheets which contain them.
- Another secondary goal is that the abrasive particles are well retained or bonded to the paper.
- the Applicant has found that the main object of the invention is achieved if abrasive particles coated with a non-abrasive coating material are used.
- non-abrasive coating material means that said coating material is less hard than the particles to be coated and that it decreases by coating the number and the salient of the edges that the particles have morphologically.
- the coated abrasive particles in particular have an ELNLEHNER abrasiveness, determined according to the test described in Example 1 below, reduced compared to the uncoated particles.
- the function of this coating material is to sufficiently reduce the abrasive nature of the uncoated particles in order to reduce, by virtue of this coating, the wear of the machines during the manufacture of the paper sheet as well as the wear of the machines for manufacturing the products with the sheet.
- this coating does not affect the abrasion resistance of the paper sheet because, when the latter is subsequently subjected to wear, the coating is not abrasion resistant and wears on the part of the particles subjected to abrasion so that the abrasion resistance character of the sheet may develop due to the presence of the abrasive particles.
- the coating is therefore, at least in part, temporary and has the function of delaying the abrasive nature of the particles.
- the coating prevents wear of the machines during the manufacture of the sheet or laminates and on the other hand, when the laminate obtained with the sheet is subject to wear.
- coated fillers are known as described previously in the prior art and we have been looking for more than twenty-five years, in particular in the field of decorative laminates, to reduce the wear of the sheet making machines comprising these fillers and machines to be laminated, those skilled in the art have never considered the solution recommended by the present invention.
- the non-abrasive coating material is a polymer.
- the coating polymer can be a natural or synthetic polymer.
- the coating depending on its ionicity, can also provide better particle retention; this ionicity can be adjusted during the manufacture of synthetic polymers.
- the invention provides a paper sheet comprising abrasive particles giving it a high abrasion resistance in use which comprises said abrasive particles coated in a non-abrasive material.
- the sheet of the invention is characterized in that the coated abrasive particles have an EINLEHNER abrasiveness, determined according to the test described in Example 1 below, less than or equal to 55 g / m 2 . Preferably this EINLEHNER abrasiveness is less than or equal to 20 g / m 2 .
- the sheet according to the invention is characterized in that the so-called abrasive particles are chosen from particles of alumina, silica, boron nitride, sfficium carbide, titanium carbide, tungsten carbide, zirconium oxide, cerium oxide, glass, ceramic or mixtures thereof.
- the particles are alumina particles.
- the particles can be of various shapes; for example they can be spherical, or substantially spherical, polyhedral or even in the form of fibers; preferably these particles before coating have many edges.
- the coated abrasive particles have a size of between 10 and 200 ⁇ m, preferably between 20 and 150 ⁇ m.
- the so-called abrasive particles have a Mohs hardness of at least 6, before coating.
- the coating material must optically have an appearance compatible with the use of the sheet which contains it, that is to say that it must not interfere with the transparency of the sheet when this sheet is an overlay or that 'it must be of compatible appearance with the decorative effect of the sheet when this sheet is a decorative sheet.
- it should not yellow when subjected to the temperature of laminating of the laminates comprising the sheets; nor should it turn yellow over time.
- the coating material must be transparent to translucent or white to greyish white so as not to spoil the visual appearance of the sheet which comprises it, in particular when this sheet is used as an overlay sheet therefore transparent.
- the non-abrasive material is a polymer.
- the coating polymer is chosen from organopolysiloxanes, homopolymers or copolymers of styrene and its derivatives, homopolymers or copolymers of acrylic acids or esters, homopolymers or copolymers of acids or methacrylic esters including pofy (methyl methacrylate), vinyl homopolymers or copolymers, polyolefins, polysaccharides including ethylcelhilose.
- polysaccharides it is possible to use cellulose derivatives such as ethylcellulose or products such as chitin, extracted in particular from the shell of crustaceans.
- the polymer is chosen from polystyrene, pory (methyl methacrylate), ethylcelhilose.
- the coating material represents 1 to 10% by dry weight of the dry weight of the coated particles.
- the sheets can be impregnated or coated using a composition, in particular using a thermosetting resin.
- the sheet is characterized by the fact that it comprises a thermosetting resin and more particularly by the fact that the thermosetting resin is chosen from melamine resins, benzoguanarnine resins, unsaturated polyester resins, urea resins. More particularly the sheet according to the invention is characterized in that it comprises, between 1 and 70%, preferably between 20 and 40%, by dry weight of coated abrasive particles relative to its total dry weight, excluding the weight thermosetting resin if applicable.
- the sheet according to the invention can be used as a protective covering sheet called "overlay".
- the sheet is placed on the decorative sheet of the laminate.
- this sheet makes it possible to obtain overlays sheets of low grammage and yet providing high abrasion resistance and therefore not detrimental to the good visibility of the decoration of the laminate below.
- the invention also relates to an overlay sheet for abrasion resistant laminates which is characterized in that it comprises said sheet with the coated abrasive particles.
- the sheet according to the invention can be used directly as a decorative sheet for the laminate.
- the invention also relates to a decorative sheet for abrasion-resistant laminates, characterized in that it comprises said sheet with the coated abrasive particles.
- the sheet according to the invention is obtained by papermaking from a dispersion based on cellulose fibers in an aqueous medium, the coated abrasive particles being added in mass to the cellulose fibers.
- the dispersion preferably includes a wet strength agent.
- the dispersion may also contain opacifying or coloring pigments.
- the sheet may possibly consist of several jets, the upper jet containing the coated abrasive particles.
- the invention also relates to a process for manufacturing a paper sheet according to the invention in which the abrasive particles in the form coated in said non-abrasive material are introduced into the sheet, optionally on the surface.
- the invention also relates to the process for the manufacture by the papermaking process of the sheet based on cellulose fibers, which is characterized in that, by mass, it is added to the headbox of the paper machine containing the fibers. of cellulose, said abrasive particles coated in said non-abrasive material.
- the invention also relates to another particular case of the papermaking process for manufacturing the sheet based on cellulose fibers, which is characterized in that another head box is added to the paper, on the surface of the sheet in wet formation, said abrasive particles coated in said non-abrasive material.
- the coated abrasive particles can also be introduced by other techniques as mentioned above, in particular by impregnation methods, in particular in admixture with a said impregnation resin, or by surface deposition methods.
- the surface deposition methods in particular by coating or by spraying, can be implemented on a sheet previously impregnated with a thermosetting resin and optionally after printing the sheet in the case of a decorative sheet. In all cases, the coated particles prevent wear of the machines used.
- the sheet according to the invention can also be a decorative sheet called a finished sheet, used for the development of the third type of decorative panels defined in the introductory part of this specification.
- This sheet can be advantageously printed without using the printing machines.
- the invention also relates to an abrasion resistant laminate which is characterized by the fact that it comprises, as a sheet called "overlay", a sheet according to the invention.
- the invention also relates to an abrasion resistant laminate which is characterized by the fact that it comprises, as a decorative sheet, a sheet according to the invention.
- the laminate comprising the sheet with the coated particles is characterized in that its abrasion resistance TABER, measured according to standard NF-EN-483-2 (1991) is greater than or equal at 3000 rpm.
- the laminate may include as a decorative sheet the sheet according to the invention and moreover a conventional "overlay" sheet (without abrasive particles) for an even higher abrasion resistance.
- the laminate may include both a decorative sheet and an "overlay” sheet both according to the invention for even greater abrasion resistance.
- the laminate is characterized by the fact that it has a high gloss.
- This high gloss is obtained thanks to the surface condition of the sheets of the laminating press which is not altered under the abrasiveness of the abrasive particles, these particles being coated in said non-abrasive material.
- the invention also relates to the process for manufacturing a laminate which is characterized in that at least one sheet comprising the coated abrasive particles is placed on the stack of the various components of the laminate, and this sheet and the other components are pressed together laminate.
- the components of the laminate other than the sheet comprising the coated abrasive particles are the kraft sheets impregnated with thermosetting resin and the decorative sheet, possibly impregnated with a thermosetting resin, in the case where this decorative sheet does not contain coated abrasive fillers.
- the components of the laminate other than the sheet comprising the coated abrasive particles are the support panel as a panel of agglomerated particles and a decorative sheet impregnated with a thermosetting resin, in the case where this sheet decorative does not include coated abrasive fillers.
- a control sheet is produced with uncoated alumina abrasive particles.
- These alumina particles have a KNOOP hardness of 2100 or a MOHS hardness of 9; they have an average size of 100 ⁇ m.
- the alumina particles used are characterized by an EINLEHNER abrasiveness of 86 g / m 2 .
- the EINLEHNER abrasiveness of the particles was determined under the following test conditions:
- the pigment is dried in an oven at 105 ° C for 24 hours and then 10 g of this product are suspended in 1000 g of distilled water.
- the pH is readjusted to 6 with alumina sulfate.
- the principle of this measurement consists in circulating between a mobile and a metal grid, with strong agitation, the particles of the sample to be tested.
- the standard duration of this test is 120 minutes but can be reduced in the case of very abrasive products, in fact the loss of mass of the fabric must not exceed 40 mg or DOg / m 2 .
- the charges to be tested being very abrasive, the duration of the test is fixed at 30 minutes.
- a witness sheet overlay on a paper machine Fourdrinier type from * a composition in aqueous medium of refined cellulose fibers 20 SR (degrees SCHOEPPER- RIEGLER). Alumina particles are added to the fibers in bulk.
- the sheet also contains 2% by dry weight of a wet resistance agent based on melamine-formaldehyde resin. The sheet after drying has a grammage of 43 g / m 2 .
- the ash rate is determined according to ISO 2144 (1987) at 420 ° C; the sheet contains approximately 8.6% of mineral matter mainly consisting of alumina, the other mineral materials being mineral residues contained in the paper pulp and the additives.
- the sheet is impregnated with a melamine-formaldehyde resin in aqueous media, the impregnation rate is 72%, that is to say that there are approximately 72 grams of resin by dry weight per 100 grams of impregnated paper.
- the platens of the laminating press are heated to 160 ° C and a pressure of 6.9 MPa (70 kg / cm 2 ) is applied for 30 minutes.
- the abrasion resistance of the laminate obtained according to standard NF-EN 438-2 (1991) paragraph 6 is measured. This resistance is characterized by the average wear R which is of the order of 4300 revolutions.
- EXAMPLE 2 The control alumina particles are coated by suspending these particles in a fluidized ht and by vaporizing the polymer therein, pory (methyl methacrylate), previously dissolved in dichloromethane. There is about 1.5% polymer by weight of the coated particles.
- the size of the coated particles is substantially the same as that of the uncoated particles; the particles were coated with a thin film of polymer. It is checked with a scanning electron microscope that the film continuously coats the alumina particles.
- the EINLEHNER abrasiveness of the coated particles is determined, measured under the control conditions. This abrasiveness is 45 g / m 2 , it is therefore much lower than that of the control.
- an overlay sheet is made on a type paper machine.
- Alumina particles of the example but coated in pohy (methyl methacrylate) are added to the fibers in bulk.
- the sheet also contains 2% by dry weight of a wet resistance agent based on melamine-formaldehyde resin.
- the sheet after drying has a grammage of 38 g / m 2 .
- the ash content is determined according to ISO 2144 (1987) at 420 ° C; the sheet contains about 10% of mineral matter mainly consisting of alumina, the other mineral matters being mineral residues contained in the paper pulp and the additives.
- the sheet is impregnated with a melamine-formaldehyde resin in aqueous media, the impregnation rate is 70%, that is to say that there are approximately 70 grams of resin by dry weight per 100 grams of impregnated paper.
- This sheet is laminated to manufacture a high pressure laminate according to the method and operating conditions of Comparative Example 1.
- the abrasion resistance of the laminate obtained is measured according to standard NF-EN 438-2 (1991) paragraph 6. This resistance is characterized by the average wear R which is of the order of 4500 revolutions. This resistance was therefore maintained relative to the control of comparative example 1.
- the alumina particles of the control are coated by putting these particles in suspension in a fluidized ht and by vaporizing therein the polymer, polystyrene, previously dissolved in toluene. There is about 2.5% polymer by weight of the coated particles.
- the size of the coated particles is substantially the same as that of the uncoated particles; the particles were coated with a thin film of polymer. It is checked with a scanning electron microscope that the film continuously coats the alumina particles.
- the EINLEHNER abrasiveness of the coated particles is determined, measured under the control conditions. This abrasiveness is 15 g / m 2 , it is therefore at the same level as that of the titanium oxide particles and is almost six times lower than that of the control.
- Example 2 Is made, as for the control and in Example 2, an overlay sheet on a Foudrinier type paper machine from an aqueous medium composition of refined cellulose fibers at 20 ° SR (degrees SCHOEPPER-RDEGLER). Alumina particles coated in polystyrene are added to the fibers in bulk. The sheet also contains 2% by dry weight of a wet resistance agent based on melamine-formaldehyde resin.
- the sheet after drying has a grammage of 38 g / m 2 .
- the ash content is determined according to ISO 2144 (1987) at 420 ° C; the sheet contains approximately 9% of mineral matter consisting mainly of ahimine, the other mineral materials being mineral residues contained in the paper pulp and the additives.
- the sheet is impregnated with a melamine-formaldehyde resin in aqueous media, the impregnation rate is 73%, that is to say that there are approximately 73 grams of resin by dry weight per 100 grams of impregnated paper.
- This sheet was laminated to make a high pressure laminate according to the method and operating conditions of Comparative Example 1.
- the abrasion resistance of the laminate obtained is measured according to standard NF-EN 438-2 (1991) paragraph 6. This resistance is characterized by the average wear R which is of the order of 4000 revolutions. This resistance was therefore maintained relative to the control of comparative example 1.
- the coating polymer has not yellowed during lamination. It is also verified that the presence of the coated fillers has not reduced the transparency of the sheet comprising them compared to that of the control and that the decorative effect of the laminate is not altered. It is also checked that the mechanical characteristics (tensile strength, resistance in the wet state) and the porosity of the paper sheet have been preserved relative to the control.
- EXAMPLE 4 The particles of alumina of the control are coated by putting these particles in suspension in a fluidized ht and by vaporizing therein the polymer, of rethylcellulose, previously dissolved in toluene. There is about 1.5% polymer by weight of the coated particles.
- the size of the coated particles is substantially the same as that of the uncoated particles; the particles were coated with a thin film of polymer. It is checked with a scanning electron microscope that the film continuously coats the alumina particles.
- the EINLEHNER abrasiveness of the coated particles is determined, measured under the control conditions. This abrasiveness is 55 g / m 2 , it is therefore much lower than that of the control.
- an overlay sheet is made on a Foudri ⁇ ier type paper machine from a composition in aqueous medium of cellulose fibers refined at 20 SR (SCHOEPPER-RTEGLER degrees).
- Alumina particles from the example are added to the fibers in bulk, but coated in rethylcellulose.
- the sheet also contains 2% by dry weight of a wet resistance agent based on melamine-formaldehyde resin.
- the sheet after drying has a grammage of 38 g / m.
- the ash content is determined according to ISO 2144 (1987) at 420 ° C; the sheet contains approximately 10% of mineral matter mainly consisting of alumina, the other mineral materials being mineral residues contained in the paper pulp and the additives.
- the sheet is impregnated with a melamine-formaldehyde resin in aqueous media, the impregnation rate is 70%, that is to say that there are approximately 70 grams of resin by dry weight per 100 grams of impregnated paper.
- This sheet was laminated to make a high pressure laminate according to the method and operating conditions of Comparative Example 1.
- the abrasion resistance of the laminate obtained according to standard NF-EN 438-2 (1991) paragraph 6 is measured. This resistance is characterized by the average wear R which is of the order of 4500 revolutions. This resistance was therefore maintained relative to the control of comparative example 1.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
- Ceramic Products (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9600380 | 1996-01-15 | ||
FR9600380 | 1996-01-15 | ||
PCT/FR1997/000055 WO1997026410A1 (fr) | 1996-01-15 | 1997-01-14 | Feuille papetiere et stratifies resistants a l'abrasion |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0815323A1 true EP0815323A1 (fr) | 1998-01-07 |
EP0815323B1 EP0815323B1 (fr) | 2003-04-09 |
Family
ID=9488105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97900636A Expired - Lifetime EP0815323B1 (fr) | 1996-01-15 | 1997-01-14 | Stratifies resistants a l'abrasion |
Country Status (8)
Country | Link |
---|---|
US (1) | US6290815B1 (fr) |
EP (1) | EP0815323B1 (fr) |
AT (1) | ATE237031T1 (fr) |
CA (1) | CA2214015A1 (fr) |
DE (1) | DE69720599T2 (fr) |
ES (1) | ES2197328T3 (fr) |
PT (1) | PT815323E (fr) |
WO (1) | WO1997026410A1 (fr) |
Families Citing this family (32)
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BR0007620A (pt) * | 1999-01-22 | 2002-01-15 | Akzo Nobel Nv | Processo para a produção de filme de resina sintética para laminados |
ATE254692T1 (de) * | 1999-01-26 | 2003-12-15 | Kronospan Tech Co Ltd | Verfahren zum imprägnieren von dekorpapieren |
CN1094840C (zh) * | 1999-01-26 | 2002-11-27 | 克劳诺斯潘技术有限公司 | 制备地板的复合覆层的方法 |
EP1187719A1 (fr) * | 1999-05-19 | 2002-03-20 | Akzo Nobel N.V. | Feuille decor resistante a l'abrasion |
US6287681B1 (en) * | 1999-07-20 | 2001-09-11 | The Mead Corporation | Preparation of wear-resistant laminates using mineral pigment composites |
US6517674B1 (en) | 2000-02-02 | 2003-02-11 | The Mead Corporation | Process for manufacturing wear resistant paper |
CA2433515A1 (fr) | 2001-01-31 | 2002-08-22 | John C. Chang | Revetement anti-salissure durcissable pour lamines |
US6716314B2 (en) * | 2001-02-27 | 2004-04-06 | Meadwestvaco Corporation | Method for making improved abrasion resistant overlays |
US6551455B2 (en) * | 2001-02-27 | 2003-04-22 | The Mead Corporation | Multi-layer printable wear resistant papers including particle rich interior layer |
US6863774B2 (en) * | 2001-03-08 | 2005-03-08 | Raytech Innovative Solutions, Inc. | Polishing pad for use in chemical-mechanical planarization of semiconductor wafers and method of making same |
US7026038B2 (en) * | 2001-04-04 | 2006-04-11 | Nevamar Company, Llc | Wear resistant laminates |
US20040146706A1 (en) * | 2001-06-19 | 2004-07-29 | Toshihiro Kasai | Protective film,adhesive sheet and floor surface protective structure |
US20030040563A1 (en) * | 2001-08-23 | 2003-02-27 | Sagal E. Mikhail | Substantially non-abrasive thermally conductive polymer composition containing boron nitride |
US6702922B2 (en) * | 2002-07-17 | 2004-03-09 | Mw Custom Papers, Llc | Papers for use in decorative laminates and methods of making the same |
KR20050088347A (ko) * | 2002-12-30 | 2005-09-05 | 이 아이 듀폰 디 네모아 앤드 캄파니 | 종이 적층물에 유용한 수분산성 이산화티탄 안료의 제조방법 |
KR20060063973A (ko) * | 2003-09-30 | 2006-06-12 | 크로노스판 테크니컬 컴파니 리미티드 | 접착제로 피복된 강옥이 살포되어 있는 장식지 |
PT1725599E (pt) | 2004-03-16 | 2010-10-22 | Albany Int Corp | Correias revestidas com poliuretano compreendendo nanoenchedores |
DE102004043355B4 (de) * | 2004-09-08 | 2006-09-21 | Kronotec Ag | Imprägnat |
US20060265966A1 (en) * | 2005-05-24 | 2006-11-30 | Rostal William J | Abrasive articles and methods of making and using the same |
US20060265967A1 (en) * | 2005-05-24 | 2006-11-30 | 3M Innovative Properties Company | Abrasive articles and methods of making and using the same |
WO2006133247A2 (fr) * | 2005-06-07 | 2006-12-14 | E. I. Du Pont De Nemours And Company | Papier et lamine de papier au dioxyde de titane modifie |
US7601212B2 (en) * | 2005-08-29 | 2009-10-13 | E.I. Du Pont De Nemours And Company | Pigment particles coated with polysaccharides and having improved properties |
US20070068423A1 (en) * | 2005-09-27 | 2007-03-29 | Thiele Erik S | Titanium dioxide pigment useful in paper laminates |
US7824486B2 (en) * | 2005-09-27 | 2010-11-02 | E. I. Du Pont De Nemours And Company | Paper laminates |
US20100075781A1 (en) * | 2007-02-28 | 2010-03-25 | Callaway Golf Company | Dimples composed of letters or symbols inset into cover |
DE102010052518A1 (de) * | 2010-11-26 | 2012-05-31 | Brillux Gmbh & Co. Kg | Beschichtungsmasse mit Funkeleffekt |
US8888956B2 (en) | 2011-04-28 | 2014-11-18 | E I Du Pont De Nemours And Company | Treated inorganic pigments having improved bulk flow and their use in paper slurries |
AU2012275788B2 (en) | 2011-06-28 | 2017-04-13 | E. I. Du Pont De Nemours And Company | Treated inorganic pigments having reduced photoactivity and anti-microbial properties and their use in paper slurries |
CA2849773C (fr) | 2011-10-28 | 2020-10-20 | E. I. Du Pont De Nemours And Company | Particules de cur inorganiques traitees ayant une aptitude a la dispersion amelioree |
WO2013062781A1 (fr) | 2011-10-28 | 2013-05-02 | E. I. Du Pont De Nemours And Company | Pigments inorganiques traités présentant une dispersibilité améliorée et utilisation associée dans des compositions de revêtement |
US9120074B2 (en) * | 2011-10-28 | 2015-09-01 | The Chemours Company Tt, Llc | Laminate paper treated with inorganic pigments having improved dispersability |
WO2014021858A1 (fr) * | 2012-07-31 | 2014-02-06 | Hewlett-Packard Development Company, L.P. | Supports d'impression |
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FR1543107A (fr) | 1966-11-04 | 1968-10-18 | Nat Lead Co | Additifs enrobés notamment pour matières plastiques |
US3661673A (en) * | 1969-05-01 | 1972-05-09 | Woodall Industries Inc | Method of making plastic laminate having high abrasion resistance |
ATA806276A (de) | 1976-10-29 | 1978-07-15 | Neusiedler Ag | Fuellstoffe und verfahren zur herstellung |
US5093185A (en) * | 1984-12-26 | 1992-03-03 | Nevamar Corporation | Abrasion resistant laminate |
US4713138A (en) * | 1984-12-26 | 1987-12-15 | Nevamar Corporation | Method of producing abrasion-resistant decorative laminate |
US4643801A (en) * | 1986-02-24 | 1987-02-17 | Nalco Chemical Company | Papermaking aid |
FR2674251B1 (fr) * | 1991-03-22 | 1994-04-29 | Rhone Poulenc Chimie | Nouvelles particules mixtes a base de silices et de polymeres, compositions filmogenes les contenant, films obtenus a partir desdites compositions et procede de preparation. |
JPH0515772A (ja) | 1991-07-12 | 1993-01-26 | Nippon Junyaku Kk | マイクロカプセルの製法 |
US5466511A (en) * | 1991-07-18 | 1995-11-14 | Nevamar Corporation | Coated transfer sheet and laminate produced therefrom |
US5266384A (en) | 1991-07-18 | 1993-11-30 | Nevamar Corporation | Aesthetic surface layer |
GB9127293D0 (en) * | 1991-12-23 | 1992-02-19 | Ici Plc | Coating pigment particles with polymers |
-
1997
- 1997-01-14 WO PCT/FR1997/000055 patent/WO1997026410A1/fr active IP Right Grant
- 1997-01-14 CA CA002214015A patent/CA2214015A1/fr not_active Abandoned
- 1997-01-14 ES ES97900636T patent/ES2197328T3/es not_active Expired - Lifetime
- 1997-01-14 AT AT97900636T patent/ATE237031T1/de not_active IP Right Cessation
- 1997-01-14 EP EP97900636A patent/EP0815323B1/fr not_active Expired - Lifetime
- 1997-01-14 PT PT97900636T patent/PT815323E/pt unknown
- 1997-01-14 US US08/894,806 patent/US6290815B1/en not_active Expired - Fee Related
- 1997-01-14 DE DE69720599T patent/DE69720599T2/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9726410A1 * |
Also Published As
Publication number | Publication date |
---|---|
PT815323E (pt) | 2003-08-29 |
DE69720599D1 (de) | 2003-05-15 |
WO1997026410A1 (fr) | 1997-07-24 |
ATE237031T1 (de) | 2003-04-15 |
EP0815323B1 (fr) | 2003-04-09 |
ES2197328T3 (es) | 2004-01-01 |
US6290815B1 (en) | 2001-09-18 |
DE69720599T2 (de) | 2004-04-08 |
CA2214015A1 (fr) | 1997-07-24 |
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