CN113445362A - Leather matte high-temperature release paper and preparation method thereof - Google Patents
Leather matte high-temperature release paper and preparation method thereof Download PDFInfo
- Publication number
- CN113445362A CN113445362A CN202110779259.0A CN202110779259A CN113445362A CN 113445362 A CN113445362 A CN 113445362A CN 202110779259 A CN202110779259 A CN 202110779259A CN 113445362 A CN113445362 A CN 113445362A
- Authority
- CN
- China
- Prior art keywords
- coating
- parts
- release paper
- leather
- temperature
- 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.)
- Pending
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- 239000010985 leather Substances 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 239000011248 coating agent Substances 0.000 claims abstract description 112
- 238000000576 coating method Methods 0.000 claims abstract description 112
- 238000005488 sandblasting Methods 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000001723 curing Methods 0.000 claims abstract description 25
- 238000010894 electron beam technology Methods 0.000 claims abstract description 19
- 238000004049 embossing Methods 0.000 claims abstract description 17
- 239000003973 paint Substances 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 239000010410 layer Substances 0.000 claims description 103
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 238000001227 electron beam curing Methods 0.000 claims description 20
- 239000004814 polyurethane Substances 0.000 claims description 20
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 18
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 18
- 239000012752 auxiliary agent Substances 0.000 claims description 15
- 229920002635 polyurethane Polymers 0.000 claims description 14
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 13
- 239000002518 antifoaming agent Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 12
- FIHBHSQYSYVZQE-UHFFFAOYSA-N 6-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCOC(=O)C=C FIHBHSQYSYVZQE-UHFFFAOYSA-N 0.000 claims description 11
- 125000001931 aliphatic group Chemical group 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 238000005096 rolling process Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 10
- 239000000178 monomer Substances 0.000 claims description 10
- 239000004576 sand Substances 0.000 claims description 10
- 239000004094 surface-active agent Substances 0.000 claims description 10
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 9
- ZDQNWDNMNKSMHI-UHFFFAOYSA-N 1-[2-(2-prop-2-enoyloxypropoxy)propoxy]propan-2-yl prop-2-enoate Chemical compound C=CC(=O)OC(C)COC(C)COCC(C)OC(=O)C=C ZDQNWDNMNKSMHI-UHFFFAOYSA-N 0.000 claims description 7
- PLLBRTOLHQQAQQ-UHFFFAOYSA-N 8-methylnonan-1-ol Chemical compound CC(C)CCCCCCCO PLLBRTOLHQQAQQ-UHFFFAOYSA-N 0.000 claims description 7
- 239000004440 Isodecyl alcohol Substances 0.000 claims description 7
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- 239000002174 Styrene-butadiene Substances 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 7
- 239000011247 coating layer Substances 0.000 claims description 7
- 239000007822 coupling agent Substances 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 239000004816 latex Substances 0.000 claims description 7
- 229920000126 latex Polymers 0.000 claims description 7
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical class C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 claims description 7
- 235000019260 propionic acid Nutrition 0.000 claims description 7
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 7
- 239000011115 styrene butadiene Substances 0.000 claims description 7
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- -1 oxy-1, 4-butanediyl Chemical group 0.000 claims description 5
- GTELLNMUWNJXMQ-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;prop-2-enoic acid Chemical class OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.CCC(CO)(CO)CO GTELLNMUWNJXMQ-UHFFFAOYSA-N 0.000 claims description 4
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- KQWGXHWJMSMDJJ-UHFFFAOYSA-N cyclohexyl isocyanate Chemical compound O=C=NC1CCCCC1 KQWGXHWJMSMDJJ-UHFFFAOYSA-N 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 2
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical class OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 11
- 230000008033 biological extinction Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 11
- 239000003082 abrasive agent Substances 0.000 description 8
- 239000002904 solvent Substances 0.000 description 7
- 239000005995 Aluminium silicate Substances 0.000 description 5
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 235000012211 aluminium silicate Nutrition 0.000 description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000005422 blasting Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 229910052593 corundum Inorganic materials 0.000 description 4
- 239000010431 corundum Substances 0.000 description 4
- 238000000016 photochemical curing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 239000002649 leather substitute Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- JJFFNQSUUAIWHB-UHFFFAOYSA-N carbamic acid;prop-2-enoic acid Chemical compound NC(O)=O.OC(=O)C=C JJFFNQSUUAIWHB-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 229910021485 fumed silica Inorganic materials 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000011031 large-scale manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003847 radiation curing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000001029 thermal curing Methods 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- NSFGOWGWLHAJPC-UHFFFAOYSA-N COCOC.C(C=C)(=O)O Chemical compound COCOC.C(C=C)(=O)O NSFGOWGWLHAJPC-UHFFFAOYSA-N 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/001—Release paper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
-
- 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
- D21H19/38—Coatings with pigments characterised by the 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/385—Oxides, hydroxides or carbonates
-
- 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
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays
-
- 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
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
-
- 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
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/46—Non-macromolecular organic compounds
-
- 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
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof
-
- 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
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/62—Macromolecular organic compounds or oligomers thereof obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- D21H19/80—Paper comprising more than one coating
- D21H19/82—Paper comprising more than one coating superposed
- D21H19/822—Paper comprising more than one coating superposed two superposed coatings, both being pigmented
-
- 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
- D21H21/14—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 function or properties in or on the paper
- D21H21/22—Agents rendering paper porous, absorbent or bulky
- D21H21/24—Surfactants
-
- 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
- D21H23/70—Multistep processes; Apparatus for adding one or several substances in portions or in various ways to the paper, not covered by another single group of this main group
- D21H23/72—Plural serial stages only
-
- 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
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
- D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F2201/00—Mechanical deformation of paper or cardboard without removing material
- B31F2201/07—Embossing
- B31F2201/0707—Embossing by tools working continuously
- B31F2201/0715—The tools being rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F2201/00—Mechanical deformation of paper or cardboard without removing material
- B31F2201/07—Embossing
- B31F2201/0707—Embossing by tools working continuously
- B31F2201/0715—The tools being rollers
- B31F2201/0723—Characteristics of the rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F2201/00—Mechanical deformation of paper or cardboard without removing material
- B31F2201/07—Embossing
- B31F2201/0758—Characteristics of the embossed product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The invention discloses a preparation method of leather matte high-temperature release paper, which comprises the following steps: preparing a release layer coating; preparing a precoating paint; coating the precoating layer coating on a base material, and solidifying to form a precoating layer to obtain a precoated base material; embossing and curing the release layer coating on the pre-coated substrate to form a release layer by adopting a slit coating mode and assisting with an electron beam, so as to obtain the leather matte high-temperature release paper; the invention also discloses the matte high-temperature release paper for the leather. The release layer coating and the pre-coating adopted in the invention do not contain extinction particles, so that the technical problem of the extinction effect reduction of the traditional release paper caused by the dispersibility and the precipitability of the extinction particles can be solved; the release layer coating is subjected to film forming through embossing of the sand blasting roller under the curing effect of the electron beam, and curing and embossing are simultaneously realized.
Description
Technical Field
The invention relates to the field of release paper production, in particular to leather matte high-temperature release paper and a preparation method thereof.
Background
Most of the matte paper on the market is added with the matting particles on the coating to achieve the matting effect, but the matting effect of the matte paper is influenced by the dispersibility of the matting particles; and the matting effect may be deteriorated due to the precipitation of the matting particles during the production process. The acrylic resin has the characteristic of high scratch resistance, can be used for preparing a scratch-resistant matte surface, effectively improves the use times, and is widely applied to the field of release paper production.
At present, most release paper has a complex hierarchical structure and a complicated preparation method, for example, chinese patent CN202169740U discloses a matte release paper, which is formed by stacking five layers: the first laminating layer, the release paper raw paper layer, the second laminating layer and the polyester matte coating are complex in structure, easy to generate loss after long-time use and free of economic benefit; chinese patent publication No. CN101565919B provides a matte release paper for synthetic leather, which comprises the following specific operations: dispersing one or more inorganic or/and organic matting particles in a release layer coating prepared from alkyd modified silicon resin, melamine resin, an acid catalyst, matting particles, a solvent and the like, then coating the release layer coating on a substrate, wherein a multi-functional layer is arranged between the substrate and the release layer to prevent the release layer coating from penetrating and improve smoothness; further, chinese patent CN104594117A discloses a technology for making artificial leather release paper by radiation curing, and the artificial leather release paper is made by embossing with patterned roller during the second curing, the production process is complex and difficult to control, and needs two times of coating and radiation curing, the equipment cost is high, and the actual production speed is reduced due to the complexity of the process.
Disclosure of Invention
In order to overcome the technical problems, the invention discloses a preparation method of leather matte high-temperature release paper; also discloses a leather matte high-temperature release paper.
The technical scheme adopted by the invention for realizing the purpose is as follows:
a preparation method of leather matte high-temperature release paper comprises the following steps:
step 1, preparing a release layer coating;
step 2, preparing a precoating paint;
step 3, coating the precoating coating on the base material, and forming a precoating layer after curing to obtain a precoated base material;
and 4, embossing and curing the release layer coating on the pre-coated substrate to form a release layer by adopting a slit coating mode and assisting with an electron beam, so as to obtain the leather matte high-temperature release paper.
In the step 2, the pre-coating paint consists of the following components in parts by weight: 40-60 parts of styrene-butadiene latex, 20-40 parts of deionized water, 5-20 parts of calcium carbonate and 1-10 parts of functional auxiliary agent.
The preparation method of the leather matte high-temperature release paper comprises the step of preparing the functional auxiliary agent, wherein the functional auxiliary agent is one or more of a silane coupling agent, a titanate coupling agent, a surfactant and a defoaming agent.
In the step 1, the release layer coating comprises the following components in parts by weight: 30-80 parts of aliphatic polyurethane propionic resin, 30-80 parts of modified epoxy acrylate, 10-80 parts of a monomer agent, 1-5 parts of a functional assistant, 1-5 parts of a release agent and 1-5 parts of a filler.
In the preparation method of the leather matte high-temperature release paper, the aliphatic polyurethane propionic acid resin is one or more of acrylic carbamate, alpha-hydrogen omega-hydroxyl (oxygen-1, 4-butanediyl), 1' -methylenebis (4-isocyanatocyclohexane), 2-propionic acid, 2-hydroxyethyl ester and 1, 6-hexanediol diacrylate.
The preparation method of the leather matte high-temperature release paper comprises the step of preparing the leather matte high-temperature release paper, wherein the monomer agent is one or more of 1, 6-hexanediol diacrylate, tripropylene glycol diacrylate, cyclotrimethylolpropane methylal acrylate, isodecyl alcohol acrylate, ethoxylated trimethylolpropane triacrylate, modified polyurethane acrylate and aliphatic diacrylate.
The preparation method of the leather matte high-temperature release paper comprises the following steps of: on electron beam curing equipment, will precoat the substrate is guided to coating unit from unwinding device, adopts the mode of slit coating to be in precoating coat scribble from the type layer coating in order to constitute from the type layer, then in electron beam curing device, assist with the electron beam through the sandblast roller impressed watermark, will from type layer electron beam curing and obtain the matte high temperature of leather is from type paper, just the matte high temperature of leather is from type paper and is rolled up by the coiling mechanism.
The preparation method of the leather matte high-temperature release paper comprises the following steps: a sand-blasting gun with sand-blasting pressure of 0.1-0.5 MPa is adopted to perform sand-blasting operation towards a roller capable of automatically rotating and rolling at a fixed position, wherein the grain size of sand grains is 10-100 meshes, and the sand-blasting distance is 8-15 mm.
The preparation method of the leather matte high-temperature release paper comprises the step of curing the leather matte high-temperature release paper by using electron beams, wherein the electron beam curing energy is 100 KeV-500 KeV.
The leather matte high-temperature release paper is prepared by the preparation method of the leather matte high-temperature release paper, and comprises a substrate, a pre-coating layer and a release layer which are sequentially arranged.
The invention has the beneficial effects that:
(1) the release layer coating and the pre-coating adopted by the invention do not contain extinction particles, so that the technical problem of reduced extinction effect of the traditional release paper caused by the dispersibility and the precipitability of the extinction particles can be solved, and the brightness of the matte surface of the product cannot be lost due to more use times;
(2) the formula and the proportion of the release layer coating and the pre-coating can be regulated and controlled according to different production requirements, so that the wear resistance, the solvent resistance, the peeling strength, the glossiness and the high-temperature resistance of the release paper are effectively coordinated and enhanced;
(3) the components in the pre-coating paint are coordinated with each other, so that the irregular structure of the surface of the base material is effectively eliminated, the roughness and the matching property of the surface of the base material are enhanced, and the adhesion and the bonding force between the release layer and the base material are further improved, so that the good characteristics of the release layer can be fully expressed;
(4) the release layer coating is embossed into a film through the sand blasting roller under the curing action of the electron beam, matte grains on the sand blasting roller are transferred to the precoated base material, and the simultaneous curing and embossing are realized, so that compared with the traditional photocuring or thermocuring technology, the release layer coating has the advantages of high curing speed, high embossing precision, low energy consumption and no pollution, and the release layer has low surface energy, good adhesive force and peeling strength;
(5) the preparation method mainly adopts the reaction kettle and the electron beam curing equipment, has higher production efficiency, saves the production cost and is beneficial to large-scale production.
Detailed Description
The invention discloses a preparation method of leather matte high-temperature release paper, which comprises the following steps:
step 1, preparing a release layer coating;
step 2, preparing a precoating paint;
step 3, coating the precoating coating on the base material, and forming a precoating layer after curing to obtain a precoated base material;
and 4, embossing and curing the release layer coating on the pre-coated substrate to form a release layer by adopting a slit coating mode and assisting with an electron beam, so as to obtain the leather matte high-temperature release paper.
It should be noted that the steps 1 and 2 do not have a strict preparation sequence, and the preparation sequence of the release layer material and the precoat material can be set according to the actual production requirement.
Preferably, in the step 2, the pre-coating paint consists of the following components in parts by weight: 40-60 parts of styrene-butadiene latex, 20-40 parts of deionized water, 5-20 parts of calcium carbonate and 1-10 parts of functional auxiliary agent.
Preferably, the functional auxiliary agent is one or more of a silane coupling agent, a titanate coupling agent, a surfactant and a defoaming agent; the functional auxiliary agent is used for adjusting the functions of surface tension, leveling property, defoaming property and the like of the pre-coating paint.
Preferably, in the step 1, the release layer coating consists of the following components in parts by weight: 30-80 parts of aliphatic polyurethane propionic resin, 30-80 parts of modified epoxy acrylate, 10-80 parts of a monomer agent, 1-5 parts of a functional assistant, 1-5 parts of a release agent and 1-5 parts of a filler.
Preferably, the aliphatic polyurethane propionic acid resin is one or more of acrylic acid carbamate, alpha-hydrogen omega-hydroxyl (oxygen-1, 4-butanediyl), 1' -methylenebis (4-isocyanatocyclohexane), 2-propionic acid, 2-hydroxyethyl ester and 1, 6-hexanediol diacrylate; specifically, the aliphatic polyurethane propionic acid resin is used for controlling the functions of surface hardness, flexibility, solvent resistance, scratch resistance and the like of the release layer.
Preferably, the monomer is one or more of 1, 6-hexanediol diacrylate, tripropylene glycol diacrylate, cyclotrimethylolpropane formal acrylate, isodecyl alcohol acrylate, ethoxylated trimethylolpropane triacrylate, modified polyurethane acrylate and aliphatic diacrylate; specifically, the monomer agent is used for adjusting the viscosity of the release layer coating.
Preferably, the functional auxiliary agent is one or more of a silane coupling agent, a titanate coupling agent, a surfactant and a defoaming agent; the functional auxiliary agent is used for adjusting the functions of surface tension, leveling property, defoaming property and the like of the release layer coating; the silane coupling agent and the titanate coupling agent can improve the coupling effect on the filler, thereby improving the using amount of the filler, reducing the using amount of the aliphatic polyurethane propionic acid resin and reducing the production cost; the leveling agent, the surfactant, the defoaming agent and the like can effectively improve the coating surface effect of the release layer and reduce the problems of bubbles, poor leveling property and the like.
Preferably, the release agent is a photo-curing organic silicon release agent; the filler is one or more of light calcium carbonate, fumed silica, barium sulfate, calcined kaolin, talcum powder and titanium dioxide; specifically, the filler is used for reducing the manufacturing cost of the release layer coating and improving the functions of scratch resistance, whiteness and the like of the release layer.
Preferably, the step 4 specifically includes the following steps: guiding the precoated substrate from an unreeling device to a coating device on electron beam curing equipment, coating a release layer coating on the precoated layer in a slit coating mode to form a release layer, then entering the electron beam curing device, assisting with electron beams to carry out embossing through a sand blasting roller, curing the release layer electron beams to obtain the leather matte high-temperature release paper, and rolling the leather matte high-temperature release paper by a rolling device; specifically, the slit width of the slit coating is 10 μm, and an electron beam is irradiated from the back surface of the precoated substrate and passes through the precoated substrate to cure the release layer.
Preferably, the sand blasting roller embossing operation is: a sand blasting gun with the sand blasting pressure of 0.1-0.5 MPa is adopted to perform sand blasting operation towards a roller capable of automatically rotating and rolling at a fixed position, wherein the grain size of sand grains is 10-100 meshes, and the sand blasting distance is 8-15 mm; specifically, the matte degree of the leather matte high-temperature release paper is adjusted by sand grains with different grain diameters, and the grain diameters, the sand blasting pressure and the sand blasting distance of the sand grains can be automatically and coordinately set according to actual production requirements to control the surface glossiness of a sand blasting roller, so that the matte degree of the leather matte high-temperature release paper is adjusted.
Furthermore, the pretreatment operation of the sand blasting roller is to prepare abrasive materials mixed by 50-100% of corundum and 0-50% of glass sand in volume fraction in advance, finish grind the surface of the seamless steel pipe, adjust the rotating speed of the roller to 45mm/min, uniformly spray the abrasive materials with 16 meshes of granularity on the roller surface by using 0.25MPa of blasting pressure, and clean the roller surface by using washing water after finishing, thus obtaining the sand blasting roller.
Preferably, the electron beam curing energy is 100 KeV-500 KeV, and the dose is 3-10 MR.
Specifically, the coating weight of the precoat layer is 1-15 g/m2The coating weight of the release layer is 10-50 g/m2And the working speed of the electron beam curing equipment is 30-150 m/min.
The embodiment also discloses the leather matte high-temperature release paper which is prepared by the preparation method of the leather matte high-temperature release paper and comprises a substrate, a pre-coating layer and a release layer which are sequentially arranged.
Preferably, the precoating layer consists of the following components in parts by weight: 40-60 parts of styrene-butadiene latex, 20-40 parts of deionized water, 5-20 parts of calcium carbonate and 1-10 parts of functional auxiliary agent.
Preferably, the functional auxiliary agent is one or more of a silane coupling agent, a titanate coupling agent, a surfactant and a defoaming agent; the functional auxiliary agent is used for adjusting the functions of surface tension, leveling property, defoaming property and the like of the pre-coating layer.
Preferably, the release layer consists of the following components in parts by weight: 30-80 parts of aliphatic polyurethane propionic resin, 30-80 parts of modified epoxy acrylate, 10-80 parts of a monomer agent, 1-5 parts of a functional assistant, 1-5 parts of a release agent and 1-5 parts of a filler.
Preferably, the aliphatic polyurethane propionic acid resin is one or more of acrylic acid carbamate, alpha-hydrogen omega-hydroxyl (oxygen-1, 4-butanediyl), 1' -methylenebis (4-isocyanatocyclohexane), 2-propionic acid, 2-hydroxyethyl ester and 1, 6-hexanediol diacrylate; specifically, the aliphatic polyurethane propionic acid resin is used for controlling the functions of surface hardness, flexibility, solvent resistance, scratch resistance and the like of the release layer.
Preferably, the monomer is one or more of 1, 6-hexanediol diacrylate, tripropylene glycol diacrylate, cyclotrimethylolpropane formal acrylate, isodecyl alcohol acrylate, ethoxylated trimethylolpropane triacrylate, modified polyurethane acrylate and aliphatic diacrylate; specifically, the monomer agent is used for adjusting the viscosity of the release layer.
Preferably, the functional auxiliary agent is one or more of a silane coupling agent, a titanate coupling agent, a surfactant and a defoaming agent; the functional auxiliary agent is used for adjusting the functions of surface tension, leveling property, defoaming property and the like of the release layer.
Preferably, the release agent is a photo-curing organic silicon release agent; the filler is one or more of light calcium carbonate, fumed silica, barium sulfate, calcined kaolin, talcum powder and titanium dioxide; specifically, the filler is used for reducing the manufacturing cost of the release layer and improving the functions of scratch resistance, whiteness and the like of the release layer.
The present invention is further illustrated by the following specific examples, which are intended to facilitate the understanding and appreciation of the technical solutions of the present invention, rather than to limit the invention thereto.
Example 1: the embodiment provides a leather matte high-temperature release paper and a preparation method thereof, and the preparation method comprises the following steps:
step 1, preparing a release layer coating: according to the weight parts, 40 parts of acrylic carbamate, 10 parts of 1, 6-hexanediol diacrylate, 30 parts of modified epoxy acrylate, 5 parts of tripropylene glycol diacrylate, 10 parts of isodecyl alcohol acrylate, 2 parts of defoaming agent, 1 part of light-cured organic silicon release agent and 5 parts of calcined kaolin are sequentially placed into a container to be mixed and stirred so as to promote the solid components to be fully dissolved to obtain uniform release layer coating, and a vacuum pump is adopted to pump out bubbles and dark bubbles in the release layer coating so as to avoid the problems of fisheyes, pinholes and the like on the release layer in the subsequent curing process;
step 2, preparing a precoating coating: sequentially putting 50 parts of styrene-butadiene latex, 35 parts of deionized water, 10 parts of calcium carbonate, 2 parts of surfactant and 2 parts of defoaming agent into a container, and mixing and stirring to obtain uniform precoating paint;
step 3, coating 10g of the pre-coating paint on 180g of a base material, and forming a pre-coating layer after curing for 90s at 100 ℃ to obtain a pre-coated base material; wherein the coating weight of the precoat layer is 10g/m2；
Step 4, guiding the precoated substrate from an unreeling device to a coating device on an electron beam curing device, coating 50g of release layer coating on the precoated layer in a slit coating mode to form a release layer, then enabling the release layer to enter the electron beam curing device, conducting embossing on the release layer by an electron beam with 300KeV energy and 5MR dosage through a sand blasting roller under the condition that the working speed is 150m/min, curing the release layer electron beam to obtain the leather matte high-temperature release paper, and rolling the leather matte high-temperature release paper by a rolling device; wherein the slit width of the slit coating is 10 μm, and the coating amount of the release layer is 20g/m2(ii) a The sand blasting pressure is 0.3MPa, the grain size of sand grains is 50 meshes, and the sand blasting distance is 10 mm.
The pretreatment operation of the sand blasting roller comprises the steps of preparing a corundum abrasive material with the volume fraction of 100%, finely grinding the surface of the seamless steel pipe, adjusting the rotating speed of the roller to 45mm/min, uniformly spraying the abrasive material with the granularity of 16 meshes on the surface of the roller by using a blasting pressure of 0.25MPa, and cleaning the surface of the roller by using washing water to obtain the sand blasting roller.
Example 2: the embodiment provides a leather matte high-temperature release paper and a preparation method thereof, and the preparation method comprises the following steps:
step 1, preparing a release layer coating: according to the weight parts, 60 parts of alpha-hydrogen omega-hydroxyl (oxygen-1, 4-butanediyl), 5 parts of 1, 6-hexanediol diacrylate, 40 parts of modified epoxy acrylate, 5 parts of tripropylene glycol diacrylate, 5 parts of isodecyl alcohol acrylate, 2 parts of defoaming agent, 1 part of light-cured organic silicon release agent and 5 parts of calcined kaolin are sequentially placed into a container to be mixed and stirred so as to promote the solid components to be fully dissolved, and the uniform release layer coating is obtained, and a vacuum pump is adopted to pump out bubbles and dark bubbles in the release layer coating so as to avoid the problems of fisheyes, pinholes and the like on the release layer in the subsequent curing process;
step 2, preparing a precoating coating: sequentially putting 50 parts of styrene-butadiene latex, 35 parts of deionized water, 15 parts of calcium carbonate, 2 parts of surfactant and 2 parts of defoaming agent into a container, and mixing and stirring to obtain uniform precoating paint;
step 3, coating 10g of the pre-coating paint on 180g of a base material, and forming a pre-coating layer after curing for 90s at 100 ℃ to obtain a pre-coated base material; wherein the coating weight of the precoat layer is 10g/m2；
Step 4, guiding the precoated substrate from an unreeling device to a coating device on an electron beam curing device, coating 50g of release layer coating on the precoated layer in a slit coating mode to form a release layer, then enabling the release layer to enter the electron beam curing device, conducting embossing on the release layer by an electron beam with 300KeV energy and 5MR dosage through a sand blasting roller under the condition that the working speed is 150m/min, curing the release layer electron beam to obtain the leather matte high-temperature release paper, and rolling the leather matte high-temperature release paper by a rolling device; wherein the slit width of the slit coating is 10 μm, and the coating amount of the release layer is 20g/m2(ii) a The sand blasting pressure is 0.3MPa, the grain size of sand grains is 50 meshes, and the sand blasting distance is 10 mm.
The pretreatment operation of the sand blasting roller comprises the steps of preparing abrasive materials mixed by 50% of corundum and 50% of glass sand in volume fraction in advance, finely grinding the surface of the seamless steel pipe, adjusting the rotating speed of the roller to 45mm/min, uniformly spraying the abrasive materials with the granularity of 16 meshes on the surface of the roller by using a blasting pressure of 0.25MPa, and cleaning the surface of the roller by using washing water to obtain the sand blasting roller.
Example 3: the embodiment provides a leather matte high-temperature release paper and a preparation method thereof, and the preparation method comprises the following steps:
step 1, preparing a release layer coating: according to the weight parts, 35 parts of acrylic carbamate, 20 parts of 1, 6-hexanediol diacrylate, 40 parts of modified epoxy acrylate, 15 parts of tripropylene glycol diacrylate, 10 parts of isodecyl alcohol acrylate, 3 parts of defoaming agent, 3 parts of light-cured organic silicon release agent and 5 parts of calcined kaolin are sequentially placed into a container to be mixed and stirred so as to promote the solid components to be fully dissolved to obtain uniform release layer coating, and a vacuum pump is adopted to pump out bubbles and dark bubbles in the release layer coating so as to avoid the problems of fisheyes, pinholes and the like on the release layer in the subsequent curing process;
step 2, preparing a precoating coating: sequentially putting 45 parts of styrene-butadiene latex, 40 parts of deionized water, 15 parts of calcium carbonate, 2 parts of surfactant and 2 parts of defoaming agent into a container, and mixing and stirring to obtain uniform precoating paint;
step 3, coating 10g of the pre-coating paint on 180g of a base material, and forming a pre-coating layer after curing for 90s at 100 ℃ to obtain a pre-coated base material; wherein the coating weight of the precoat layer is 10g/m2；
Step 4, guiding the precoated substrate from an unreeling device to a coating device on an electron beam curing device, coating 50g of release layer coating on the precoated layer in a slit coating mode to form a release layer, then enabling the release layer to enter the electron beam curing device, conducting embossing on the release layer by an electron beam with 300KeV energy and 5MR dosage through a sand blasting roller under the condition that the working speed is 150m/min, curing the release layer electron beam to obtain the leather matte high-temperature release paper, and rolling the leather matte high-temperature release paper by a rolling device; wherein the slit width of the slit coating is 10 μm, and the coating amount of the release layer is 20g/m2(ii) a The sand blasting pressure is 0.3MPa, the grain size of sand grains is 50 meshes, and the sand blasting distance is 10 mm.
The pretreatment operation of the sand blasting roller comprises the steps of preparing a corundum abrasive material with the volume fraction of 100%, finely grinding the surface of the seamless steel pipe, adjusting the rotating speed of the roller to 45mm/min, uniformly spraying the abrasive material with the granularity of 16 meshes on the surface of the roller by using a blasting pressure of 0.25MPa, and cleaning the surface of the roller by using washing water to obtain the sand blasting roller.
The following performance tests were performed on the leather matte high-temperature release paper prepared in examples 1 to 3:
1. temperature resistance and solvent resistance:
respectively making the leather matte high-temperature release paper prepared in the embodiments 1-3 into small samples with the specification of 100mm x 100mm under the same condition, dripping 10N, N-Dimethylformamide (DMF) with the volume of 0.2mL at different positions on the surface of the leather matte high-temperature release paper, putting the samples into a thermostat with the temperature of 105 ℃ for 5 minutes, putting the samples into the thermostat with the temperature of 150 ℃ for 3 minutes, taking out the samples, and observing the number of coating explosion at the positions where the N, N-dimethylformamide is dripped; and if the coating is not blasted, the coating is regarded as qualified.
2. The repeated use times are as follows:
coating PU slurry with the thickness of 150 microns on the surface of the leather matte high-temperature release paper, drying at 150 ℃ for 3 minutes to form a film, scraping glue and base cloth on the PU film, putting the PU film into an oven for drying, peeling the base cloth, cleaning the film surface of the leather matte high-temperature release paper, repeating the above operations until the release paper is released or cannot be peeled, and recording the maximum repeated use times.
3. Tape peel force:
with standard pressure sensitive adhesive tapes 25mm wide, for example: tesa 7475, 7476, 4651, 4154 and Takstrip, etc., or a face material coated with a standard pressure sensitive adhesive, cutting a 25mm by 100mm sample from a leather matte high temperature release paper, placing the sample on a glass plate, placing a flat metal plate on the sample, wherein the metal plate and the above accessories can uniformly provide 70g/cm2At a temperature of 23 ℃ (± 2 ℃) for 20 hours and at standard test conditions of 23 ± 2 ℃ and 50 ± 5% RH for not less than 4 hours.
During detection, the peel strength of the sample is measured when the peel strength meter peels the release film from the leather film at an angle of 180 degrees and a speed of 300 mm/min. Parallel 5 times, average, unit: n/25 mm.
Peeling force of PU and PVC
Coating PU slurry with the thickness of 150um on the surface of the leather matte high-temperature release paper, drying at 150 ℃ for 3 minutes to form a film, scraping glue and base cloth on the PU film, and cutting a sample with the specification of 25mm x 100 mm; during detection, the peel strength of the sample is measured when the peel strength meter peels the release film from the leather film at an angle of 180 degrees and a speed of 300 mm/min. Parallel 5 times, average, unit: n/25 mm.
5. Glossiness (ISO-2813)
And measuring the glossiness of the leather matte high-temperature release paper by using a 60-degree glossiness meter.
Through determination, the performance test results of the leather matte high-temperature release paper prepared in examples 1-3 are as follows:
table 1 results of performance testing
The performance test results show that the surface brightness of the leather matte high-temperature release paper prepared by the preparation method can be as low as 0.5, and the leather matte high-temperature release paper has the characteristics of good high temperature resistance, solvent resistance, release performance, stripping property and controllable glossiness.
The invention has the following advantages:
(1) the release layer coating and the pre-coating adopted by the invention do not contain extinction particles, so that the technical problem of reduced extinction effect of the traditional release paper caused by the dispersibility and the precipitability of the extinction particles can be solved, and the brightness of the matte surface of the product cannot be lost due to more use times;
(2) the formula and the proportion of the release layer coating and the pre-coating can be regulated and controlled according to different production requirements, so that the wear resistance, the solvent resistance, the peeling strength, the glossiness and the high-temperature resistance of the release paper are effectively coordinated and enhanced;
(3) the components in the pre-coating paint are coordinated with each other, so that the irregular structure of the surface of the base material is effectively eliminated, the roughness and the matching property of the surface of the base material are enhanced, and the adhesion and the bonding force between the release layer and the base material are further improved, so that the good characteristics of the release layer can be fully expressed;
(4) the release layer coating is embossed into a film through the sand blasting roller under the curing action of the electron beam, matte grains on the sand blasting roller are transferred to the precoated base material, and the simultaneous curing and embossing are realized, so that compared with the traditional photocuring or thermocuring technology, the release layer coating has the advantages of high curing speed, high embossing precision, low energy consumption and no pollution, and the release layer has low surface energy, good adhesive force and peeling strength;
(5) the preparation method mainly adopts the reaction kettle and the electron beam curing equipment, has higher production efficiency, saves the production cost and is beneficial to large-scale production.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Those skilled in the art can make many possible variations and modifications to the invention using the above disclosed technical means and teachings, or can modify equivalent embodiments with equivalent variations, without departing from the scope of the invention. Therefore, all equivalent changes made according to the shape, structure and principle of the present invention should be covered by the protection scope of the present invention without departing from the contents of the technical scheme of the present invention.
Claims (10)
1. A preparation method of leather matte high-temperature release paper is characterized by comprising the following steps:
step 1, preparing a release layer coating;
step 2, preparing a precoating paint;
step 3, coating the precoating coating on the base material, and forming a precoating layer after curing to obtain a precoated base material;
and 4, embossing and curing the release layer coating on the pre-coated substrate to form a release layer by adopting a slit coating mode and assisting with an electron beam, so as to obtain the leather matte high-temperature release paper.
2. The method for preparing the leather matte high-temperature release paper according to the claim 1, wherein in the step 2, the pre-coating paint consists of the following components in parts by weight: 40-60 parts of styrene-butadiene latex, 20-40 parts of deionized water, 5-20 parts of calcium carbonate and 1-10 parts of functional auxiliary agent.
3. The method for preparing the leather matte high-temperature release paper according to claim 2, wherein the functional auxiliary agent is one or more of a silane coupling agent, a titanate coupling agent, a surfactant and a defoaming agent.
4. The preparation method of the leather matte high-temperature release paper is characterized in that in the step 1, the release layer coating comprises the following components in parts by weight: 30-80 parts of aliphatic polyurethane propionic resin, 30-80 parts of modified epoxy acrylate, 10-80 parts of a monomer agent, 1-5 parts of a functional assistant, 1-5 parts of a release agent and 1-5 parts of a filler.
5. The method for preparing the leather matte high-temperature release paper according to claim 4, wherein the aliphatic polyurethane propionic acid resin is one or more of acrylic carbamate, alpha-hydrogen omega-hydroxyl (oxy-1, 4-butanediyl), 1' -methylenebis (4-isocyanatocyclohexane), 2-propionic acid, 2-hydroxyethyl ester and 1, 6-hexanediol diacrylate.
6. The method for preparing the leather matte high-temperature release paper according to claim 5, wherein the monomer agent is one or more of 1, 6-hexanediol diacrylate, tripropylene glycol diacrylate, cyclo-trimethylolpropane formal acrylate, isodecyl alcohol acrylate, ethoxylated trimethylolpropane triacrylate, modified urethane acrylate and aliphatic diacrylate.
7. The method for preparing the leather matte high-temperature release paper according to claim 1, wherein the step 4 specifically comprises the following steps: on electron beam curing equipment, will precoat the substrate is guided to coating unit from unwinding device, adopts the mode of slit coating to be in precoating coat scribble from the type layer coating in order to constitute from the type layer, then in electron beam curing device, assist with the electron beam through the sandblast roller impressed watermark, will from type layer electron beam curing and obtain the matte high temperature of leather is from type paper, just the matte high temperature of leather is from type paper and is rolled up by the coiling mechanism.
8. The method for preparing the leather matte high-temperature release paper according to claim 7, wherein the sand blasting roller embossing operation is as follows: a sand-blasting gun with sand-blasting pressure of 0.1-0.5 MPa is adopted to perform sand-blasting operation towards a roller capable of automatically rotating and rolling at a fixed position, wherein the grain size of sand grains is 10-100 meshes, and the sand-blasting distance is 8-15 mm.
9. The method for preparing the leather matte high-temperature release paper according to claim 7, wherein the electron beam curing energy is 100 KeV-500 KeV.
10. The leather matte high-temperature release paper is characterized by being prepared by the preparation method of the leather matte high-temperature release paper disclosed by any one of claims 1-9, and comprising a base material, a pre-coating layer and a release layer which are sequentially arranged.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114874651A (en) * | 2022-06-14 | 2022-08-09 | 连云港森永达新材料科技有限公司 | Solvent-free electron beam curing release agent and preparation process thereof |
| CN115157816A (en) * | 2022-08-23 | 2022-10-11 | 中广核达胜加速器技术有限公司 | Super-matte skin-feel decoration panel and preparation method thereof |
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| CN115157816A (en) * | 2022-08-23 | 2022-10-11 | 中广核达胜加速器技术有限公司 | Super-matte skin-feel decoration panel and preparation method thereof |
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Application publication date: 20210928 |