CN112409622A - Improved method for improving adhesion of coating of synthetic thermal paper substrate - Google Patents
Improved method for improving adhesion of coating of synthetic thermal paper substrate Download PDFInfo
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- CN112409622A CN112409622A CN202011305135.0A CN202011305135A CN112409622A CN 112409622 A CN112409622 A CN 112409622A CN 202011305135 A CN202011305135 A CN 202011305135A CN 112409622 A CN112409622 A CN 112409622A
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- 238000000576 coating method Methods 0.000 title claims abstract description 67
- 239000011248 coating agent Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000000758 substrate Substances 0.000 title claims abstract description 30
- 239000002318 adhesion promoter Substances 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 39
- 230000001737 promoting effect Effects 0.000 claims abstract description 24
- 229920006254 polymer film Polymers 0.000 claims abstract description 20
- 229920000098 polyolefin Polymers 0.000 claims abstract description 9
- 239000000839 emulsion Substances 0.000 claims abstract description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000853 adhesive Substances 0.000 claims abstract description 7
- 230000001070 adhesive effect Effects 0.000 claims abstract description 7
- 238000011161 development Methods 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 65
- 239000007787 solid Substances 0.000 claims description 32
- 239000011241 protective layer Substances 0.000 claims description 26
- 238000004040 coloring Methods 0.000 claims description 24
- 239000011347 resin Substances 0.000 claims description 21
- 229920005989 resin Polymers 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 14
- 239000006185 dispersion Substances 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 12
- 239000003431 cross linking reagent Substances 0.000 claims description 11
- 238000007766 curtain coating Methods 0.000 claims description 11
- 239000000975 dye Substances 0.000 claims description 11
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 10
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 8
- 239000001023 inorganic pigment Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 239000000049 pigment Substances 0.000 claims description 7
- 239000005995 Aluminium silicate Substances 0.000 claims description 6
- 241001122767 Theaceae Species 0.000 claims description 6
- 235000012211 aluminium silicate Nutrition 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 229920000178 Acrylic resin Polymers 0.000 claims description 4
- 239000004925 Acrylic resin Substances 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 238000007611 bar coating method Methods 0.000 claims description 3
- 230000006872 improvement Effects 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 239000004927 clay Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000009472 formulation Methods 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- XAAILNNJDMIMON-UHFFFAOYSA-N 2'-anilino-6'-(dibutylamino)-3'-methylspiro[2-benzofuran-3,9'-xanthene]-1-one Chemical compound C=1C(N(CCCC)CCCC)=CC=C(C2(C3=CC=CC=C3C(=O)O2)C2=C3)C=1OC2=CC(C)=C3NC1=CC=CC=C1 XAAILNNJDMIMON-UHFFFAOYSA-N 0.000 claims 1
- 239000003814 drug Substances 0.000 claims 1
- 238000007639 printing Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000009736 wetting Methods 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 238000003860 storage Methods 0.000 abstract description 2
- -1 allyloxy nonylphenol Chemical compound 0.000 description 9
- 239000004743 Polypropylene Substances 0.000 description 8
- 229920001155 polypropylene Polymers 0.000 description 8
- 239000011247 coating layer Substances 0.000 description 5
- 229920001296 polysiloxane Polymers 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- 239000008199 coating composition Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000002120 nanofilm Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RWNUSVWFHDHRCJ-UHFFFAOYSA-N 1-butoxypropan-2-ol Chemical compound CCCCOCC(C)O RWNUSVWFHDHRCJ-UHFFFAOYSA-N 0.000 description 1
- XUJLWPFSUCHPQL-UHFFFAOYSA-N 11-methyldodecan-1-ol Chemical compound CC(C)CCCCCCCCCCO XUJLWPFSUCHPQL-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 1
- QCAHUFWKIQLBNB-UHFFFAOYSA-N 3-(3-methoxypropoxy)propan-1-ol Chemical compound COCCCOCCCO QCAHUFWKIQLBNB-UHFFFAOYSA-N 0.000 description 1
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 description 1
- 229940090248 4-hydroxybenzoic acid Drugs 0.000 description 1
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- KHBQMWCZKVMBLN-UHFFFAOYSA-N Benzenesulfonamide Chemical class NS(=O)(=O)C1=CC=CC=C1 KHBQMWCZKVMBLN-UHFFFAOYSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- IBVAQQYNSHJXBV-UHFFFAOYSA-N adipic acid dihydrazide Chemical compound NNC(=O)CCCCC(=O)NN IBVAQQYNSHJXBV-UHFFFAOYSA-N 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- 230000000181 anti-adherent effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- DTPCFIHYWYONMD-UHFFFAOYSA-N decaethylene glycol Polymers OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO DTPCFIHYWYONMD-UHFFFAOYSA-N 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- HDPOOKXPFGCANF-UHFFFAOYSA-N dibenzoyl benzene-1,4-dicarboxylate Chemical compound C=1C=CC=CC=1C(=O)OC(=O)C(C=C1)=CC=C1C(=O)OC(=O)C1=CC=CC=C1 HDPOOKXPFGCANF-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- OMNKZBIFPJNNIO-UHFFFAOYSA-N n-(2-methyl-4-oxopentan-2-yl)prop-2-enamide Chemical compound CC(=O)CC(C)(C)NC(=O)C=C OMNKZBIFPJNNIO-UHFFFAOYSA-N 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920003009 polyurethane dispersion Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 1
- 239000002345 surface coating layer Substances 0.000 description 1
- 229920002397 thermoplastic olefin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2300/00—Characterised by the use of unspecified polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
Abstract
An improved method for improving the adhesive force of the coating of the synthetic thermal paper substrate is characterized in that an adhesion promoter component is added in the coating structure of the synthetic thermal paper; the synthetic thermal paper sequentially comprises a high polymer film base material (3) from bottom to top, and a modified coating containing an adhesion promoter on the upper layer of the high polymer film base material (3); the modified coating comprises at least one of a modified adhesion-promoting base layer (4) or a modified thermo-chromic promoting layer (5); the adhesion promoter is chlorinated polyolefin modified acrylic emulsion. The wetting tension is improved, the coating of the heat-sensitive synthetic paper is convenient to be coated to generate a coating, the adhesion performance of the coating and a base material is obviously enhanced, the coating of the heat-sensitive synthetic paper is firmly combined and is not easy to fall off in a cold chain using environment, the smooth realization of a production process is ensured, and the storage property of the synthetic heat-sensitive paper is improved. Is more suitable for the application of a transparent heat-sensitive color development layer, and ensures the color development characteristic of high-quality printing. The problem of poor adhesion between the polymer film base material and the coating is solved by adding an adhesion promoter reinforcing structure layer on the bottom layer.
Description
Technical Field
The invention belongs to the IPC classification C09J general non-mechanical binding method or the application technology of C09D coating composition, in particular to an improvement method for improving the binding force of a synthetic thermal paper substrate coating.
Background
Thermal paper is also called thermal facsimile paper, thermal recording paper, thermal copying paper. Thermal paper is a processed paper, and its manufacturing principle is that a layer of thermal paint is coated on a high-quality base paper to form a thermal discoloration layer. Although the color-changing layer uses more than ten chemicals, at least the following compounds are available: leuco dyes, which are of a wide variety and most commonly are fluorescent compounds; the developer is less than 20%, and bisphenol and p-hydroxybenzoic acid are commonly used; the sensitizer accounts for less than 10 percent and contains benzene sulfonic acid amide compounds; fillers, typically particulate calcium carbonate, comprise less than about 50%; less than about 10% of a binder, such as polyvinyl acetate; stabilizers, such as dibenzoyl terephthalate; lubricants, and the like. The process difficulty is high, and the technical requirement is high.
The related patent documents are less disclosed.
Chinese patent application 201610091510.3, which is proposed by Qingdao Shuangli materials science and technology Limited, relates to a coating adhesive for thermosensitive copy paper, which consists of the following components: 65 parts of butyl acrylate, 6 parts of methyl acrylate, 15 parts of methyl methacrylate, 80 parts of styrene, 3 parts of hydroxyethyl acrylate, 4 parts of glycidyl methacrylate, 5 parts of acrylic acid, 6.5 parts of methacrylic acid, 6 parts of diacetone acrylamide, 4 parts of adipic dihydrazide, 7 parts of octamethylcyclotetrasiloxane, 2 parts of methacryloxypropyl trimethoxysilane, 1.8 parts of allyloxy nonylphenol polyoxyethylene (10) ether monophosphate, 3 parts of isotridecyl alcohol polyoxyethylene ether (TO-40), 0.03 part of dodecyl mercaptan, 0.09 part of ammonium bicarbonate, 0.35 part of ammonium persulfate, 260 parts of deionized water and 18 parts of ammonia water.
Chinese patent application 200980139574.4, filed by the french company ltd, blue star silicone, relates to crosslinkable or crosslinked polysiloxane compositions that can be used to form water-repellent and anti-adhesive coatings for flexible supports made of paper or polymers, in particular heat-sensitive supports. 1 to 40 parts by weight of an additive containing 1 or 5 to 80% by weight of a particulate filler, preferably a nanofiller, in a silicone oil capable of reacting with a crosslinking agent is used per 100 parts by weight of the polysiloxane matrix. It also relates to said support and to a high-speed coating process, a silicone release coating for flexible supports obtained by crosslinking/polyaddition. These compositions are of the type containing crosslinked Polyorganosiloxanes (POSs) with ≡ Si-H units and unsaturated (preferably ≡ Si-Vi, vinyl-containing POSs) which can be reacted with a crosslinking agent by polyaddition in the presence of platinum to form a crosslinked release coating on a flexible support. The coating composition is made capable of being cross-linked, i.e. intercoupled, to form a cross-linked polysiloxane coating on all types of flexible supports, including paper, e.g. cellophane, or polymers, e.g. polyesters such as polyethylene terephthalate PET, and which has excellent adhesion (adhesion) and mechanical strength or cohesion- "rub-off" -properties, in particular when leaving the coater.
At present, the conventional paper thermal paper label is easily soaked by condensed water in a cold chain using environment to cause unrecognizable information, so that the demand of the synthetic thermal paper taking the synthetic paper as a base material is increasing. However, the synthetic paper has an extremely smooth surface and a low wet tension, and therefore, the coating layer is not easily applied or the adhesion between the coating layer and the base material is poor, and the coating layer of the heat-sensitive synthetic paper is peeled off by repeated cold and hot alternation in a cold chain use environment.
In addition, some related fields also require that the thermal recording material has certain transparency, for example, in the field of food labels, information of manufacturers, food raw materials, shelf lives and the like is required to be represented on the labels, so that the labels are large due to excessive content, and if the labels are traditional opaque labels, consumers can give up purchasing the labels because the contents of food cannot be seen, and the same problems as the synthetic thermal paper are also encountered when the transparent thermal paper base material is a transparent polymer film.
Disclosure of Invention
The invention aims to disclose an improvement method for improving the adhesive force of a coating of a synthetic thermal paper substrate, which solves the problem of poor adhesion between a polymer film substrate and the coating by adding an adhesion promoter reinforcing structure layer on a bottom layer.
The aim of the invention is achieved by the following technical measures: adding an adhesion promoter component to the coating structure of the synthetic thermal paper; the synthetic thermal paper sequentially comprises a high-molecular film base material and a modified coating containing an adhesion promoter on the high-molecular film base material from bottom to top; the modified coating layer comprises at least one of a modified adhesion-promoting underlayer or a modified thermo-chromic promoting layer; the adhesion promoter is chlorinated polyolefin modified acrylic emulsion.
In particular, a modified adhesion promoting primer layer, a thermo-sensitive coloring layer and a protective layer are sequentially provided on the surface of the polymer film substrate, and the modified adhesion promoting primer layer contains an adhesion promoter. The modification then promotes the sequential application of the respective layers of the base layer, thermochromic layer and protective layer by a metering bar coating or by a curtain coating process in one pass.
In particular, the thermosensitive coloring layer contains a leuco dye and a color developer.
In particular, the surface of the thermosensitive coloring layer is provided with a protective layer containing a water-soluble resin, a crosslinking agent and a pigment.
In particular, a modified thermosensitive coloring promoting layer is sequentially provided on the surface of the polymer film substrate, and an adhesion promoter is contained in the modified thermosensitive coloring promoting layer.
In particular, the surface of the modified thermosensitive coloring promotion layer has a protective layer.
In particular, the modified photothermal color promotion layer and the protective layer are each coated sequentially by a metering bar coating method or by a curtain coating method at a time.
In particular, the modified adhesion promoter underlayer comprises at least a porous inorganic pigment, an adhesion promoter, and a water-based resin; the aforementioned porous inorganic pigment is calcined kaolin, clay, surface-treated calcium, or porous silica. The general dosage of the porous inorganic pigment is 40-75 percent, which refers to the weight ratio of the dried coating; the aqueous resin is used for bonding the porous inorganic pigment and the adhesion promoter, and the adhesive is one or more of polyvinyl alcohol and modified resin thereof, starch and derivative thereof, cellulose derivative and water-soluble acrylic resin or aqueous emulsion thereof. The general dosage of the water-based resin is within the range of 20-50 percent; the adhesion promoter is used for improving the bonding force between the coating and the base material and endowing the product with excellent stripping resistance. The accelerator is a chlorinated polyolefin-modified acrylic resin, a chlorinated polyolefin, or the like. Then the dosage of the accelerant is generally in the range of 5-25%;
| components | Manufacturer of the product | Trade name | Solids content | Parts by weight |
| Calcined kaolin | Inner Mongolia super brand | DG95 | Solid 100% | 25 portions of |
| Modified polyvinyl alcohol | Chuanwei group | SG-182 | Solid 100% | 11 portions of |
| Adhesion promoter | Haiming Si | ACP | Solids are 30% | 9 portions of |
| Water (W) | -- | -- | -- | 55 portions of |
The materials are ground to target particle size according to the process sequence and then are uniformly mixed, and the materials are coated on a polymer film substrate in a smooth rod, winding rod or curtain coating mode and are dried to form a uniform coating; the coating weight of the dried bottom layer is within the range of 1.0-5.0 g/square meter.
In particular, the thermo-sensitive coloring layer (2) contains a leuco dye and a color developer; separately grinding the leuco dye and the color developing agent to a target particle size to obtain a leuco dye dispersion liquid A and a color developing agent dispersion liquid B, and uniformly mixing the A and the B according to a proportion to obtain a thermosensitive color development layer coating liquid; the grinding target particle size of the dispersion liquid A is 0.2-0.6um, and the grinding target particle size of the dispersion liquid B is 0.5-1.2 um;
formula of dispersion A table:
formula of dispersion B:
| components | Manufacturer of the product | Trade name | Solids content | Parts by weight |
| Color developing agent | -- | -- | Solid 100% | 25 portions of |
| Silicon dioxide | Japan east Cao | E-743 | Solid 100% | 8 portions of |
| Modified polyvinyl alcohol | Chuanwei tea | SG-182 | Solid 100% | 12 portions of |
| Water (W) | -- | -- | -- | 55 portions of |
The formula table of the thermo-sensitive coloring layer (2):
| components | Manufacturer of the product | Trade name | Solids content | Parts by weight |
| Liquid A | -- | -- | Solids 55% | 15 portions of |
| Liquid B | -- | -- | Solids 55% | 40 portions of |
| Modified polyvinyl alcohol | Chuanwei tea | SG-182 | Solid 100% | 15 portions of |
| Water (W) | -- | -- | -- | 30 portions of |
The materials are ground to target particle size according to the process sequence and then are uniformly mixed, and the materials are coated on a base material by adopting a smooth rod, a winding rod or a curtain coating mode and are dried to form a uniform coating. The coating weight of the dried thermosensitive color development layer is within the range of 2.0-10.0 g/square meter.
In particular, the protective layer (1) contains a water-soluble resin, a crosslinking agent and a pigment; firstly, adding water into pigment and water-soluble resin, mixing and grinding the mixture until the target particle size is 1.0um, then adding a cross-linking agent, and uniformly mixing to prepare a protective layer 1 coating solution;
formulation of the protective layer (1):
| components | Manufacturer of the product | Trade name | Solids content | Parts by weight |
| Calcined kaolin | Inner Mongolia super brand | DG95 | Solid 100% | 6 portions of |
| Modified polyvinyl alcohol | Chuanwei tea | SG-182 | Solid 100% | 6 portions of |
| Crosslinking agent | Jiayun Hubei | PAE | Solids are 12.5% | 20 portions of |
| Water (W) | -- | -- | -- | 68 portions of |
The materials are ground to target particle size according to the process sequence and then are uniformly mixed, and the materials are coated on a base material by adopting a smooth rod, a winding rod or a curtain coating mode and are dried to form a uniform coating. The coating weight of the protective layer after drying is within the range of 0.5-3.0 g/square meter.
The invention has the advantages and effects that: the wetting tension is improved, the coating of the heat-sensitive synthetic paper is convenient to generate, the adhesion performance of the coating and the base material is obviously enhanced, the coating of the heat-sensitive synthetic paper is firmly combined and is not easy to fall off in a cold chain using environment, the smooth realization of a production process is ensured, and meanwhile, the storage property of the synthetic heat-sensitive paper is improved. Moreover, the transparent heat-sensitive color-developing layer is more suitable for application, and high-quality printing color-developing characteristics are ensured.
Drawings
FIG. 1 is a schematic cross-sectional view of example 1.
FIG. 2 is a schematic cross-sectional view of example 2.
The reference numerals include:
a protective layer 1, a thermo-sensitive coloring layer 2, a polymer film base material 3, a modified adhesion promoting primer layer 4, and a modified thermo-sensitive coloring promoting layer 5.
Detailed Description
The principle of the present invention is that the adhesion between the surface coating layer including the thermo-sensitive coloring layer 2 and the polymer film substrate 4 can be greatly improved by introducing the adhesion promoter.
In the invention, an adhesion promoter component is added in the coating structure of the synthetic thermal paper; the synthetic thermal paper sequentially comprises a high polymer film base material 3 and a modified coating containing an adhesion promoter on the upper layer of the high polymer film base material 3 from bottom to top; the modified coating layer comprises at least one of a modified adhesion-promoting base layer 4 or a modified thermo-chromic promoting layer 5; the adhesion promoter is chlorinated polyolefin modified acrylic emulsion.
The invention is further illustrated by the following figures and examples.
Example 1: as shown in FIG. 1, a modified adhesion promoting primer layer 4, a thermochromic layer 2 and a protective layer 1 are sequentially provided on the surface of a polymer film substrate 3, and the modified adhesion promoting primer layer 4 contains an adhesion promoter.
In the foregoing, the thermo-sensitive coloring layer 2 contains a leuco dye and a color developer.
Among the above, the thermo-sensitive coloring layer 2 has a protective layer 1 on the surface thereof, and the protective layer 1 contains a water-soluble resin, a crosslinking agent and a pigment.
The embodiment of the invention is a basic implementation structure of the invention.
In the embodiment of the invention, the chlorinated polyolefin product is a common adhesion promoter for improving the adhesion between the water paint and the polyolefin plastic. The water-based pp adhesion promoter and the substrate can be combined together through the actions of mechanical combination, physical adsorption (including wetting), formation of hydrogen bonds and chemical bonds, mutual diffusion and the like, the adhesion is good or bad depending on the combination degree of a coating and the substrate, and various methods for increasing the adhesion (such as matching different resins, treating the substrate, adding an adhesion promoter and the like) are provided, wherein the method for adding the adhesion promoter is a simple and efficient method. Polypropylene (PP) plastics have good engineering plastic properties and are widely used in common products. However, the adhesion of conventional coatings to polypropylene or other thermoplastic polyolefins tends to be poor, especially with aqueous coatings. Aqueous dispersions of chlorinated polyolefins, differing in the neutralizing amines, CP349W containing ethylene glycol, CP310W with rapidly volatile ammonia, make them useful as air-drying adhesion promoting primers, and CP347W and CP349W with AMP, make them more compatible with aqueous resins. In addition, a new generation of aqueous chlorine-free (halogen-free) adhesion promoter Advantis 510W is more environment-friendly. These adhesion promoters are compatible with many styrene-acrylic emulsions and polyurethane dispersions, can be added directly to aqueous systems to improve the adhesion of aqueous coatings to low surface energy plastic substrates, and are useful in the automotive, electronic communication, printing ink and general industrial device fields. The water-based adhesion promoter specially used for polypropylene (PP) base materials is mainly used for automobile interior decoration made of PP materials, improves the adhesion between paint and PP, and particularly improves the adhesion of soft PP base materials. The EH-801 is emulsion, and can be diluted by 5-8 times to be used as a bottom coat generally; it may also be mixed with the aqueous resin at a mixing ratio of (4/6) - (6/4) based on the solid content of the resin, and a solvent such as propylene glycol monobutyl ether or dipropylene glycol monomethyl ether may be added in a total amount of 5% to 10% to improve miscibility. The resin suitable for EH801 is waterborne polyurethane and waterborne acrylate polymer, and the adhesive force is greatly improved after the resin is added.
In the application of the embodiment of the present invention, in the preparation, a modified adhesion promoting primer layer 4 containing an adhesion promoter is coated on a polymer film substrate 3, and then, a thermo-sensitive coloring layer 2 and a protective layer 1 are sequentially coated, and further, the modified adhesion promoting primer layer 4, the thermo-sensitive coloring layer 2 and the protective layer 1 are successfully coated at one time by a curtain coating method.
Example 2: as shown in FIG. 2, a modified thermosensitive coloring promoting layer 5 is provided on the surface of the polymer film substrate 3 in this order, and the modified thermosensitive coloring promoting layer 5 contains an adhesion promoter.
In the above, the surface of the modified thermosensitive coloring promoting layer 5 has the protective layer 1.
In the embodiment of the invention, the adhesion promoter is added into the thermo-sensitive coloring layer 2, so that the excellent adhesion between the coating and the polymer film substrate 3 is ensured through the design of the formula, and the high-quality printing coloring characteristic is ensured.
In the examples of the present invention, the modified photothermal color development promoting layer 5 and the protective layer 1 are each coated sequentially by a metering bar coating method or by a curtain coating method at a time.
Example 3: the modified thermo-sensitive coloring promoting layer 5 is a transparent thermo-sensitive recording material in which an adhesion promoter is added to the thermo-sensitive coloring layer.
Claims (10)
1. An improvement method for improving the adhesive force of the coating of the synthetic thermal paper substrate is characterized in that an adhesion promoter component is added in the coating structure of the synthetic thermal paper; the synthetic thermal paper sequentially comprises a high polymer film base material (3) from bottom to top, and a modified coating containing an adhesion promoter on the upper layer of the high polymer film base material (3); the modified coating comprises at least one of a modified adhesion-promoting base layer (4) or a modified thermo-chromic promoting layer (5); the adhesion promoter is chlorinated polyolefin modified acrylic emulsion.
2. The method for improving the adhesion of a coating on a synthetic thermal paper substrate according to claim 1, wherein the modified adhesion promoting primer layer (4), the thermo-sensitive coloring layer (2) and the protective layer (1) are sequentially provided on the surface of the polymer film substrate (3), and the modified adhesion promoting primer layer (4) contains an adhesion promoter.
3. The method for improving adhesion of a substrate coating of synthetic thermal paper according to claim 1, wherein the thermo-chromic layer (2) contains a leuco dye and a color developer.
4. The method for improving the adhesion of a coating on a synthetic thermal paper substrate according to claim 1 wherein the modified thermo-chromic promoting layer (5) has a protective layer (1) on its surface.
5. The improved method for improving adhesion of coating on synthetic thermal paper substrate according to claim 2, wherein the layers of the modified adhesion promoting primer layer (4), the thermo-chromic layer (2) and the protective layer (1) are sequentially coated by a metering bar coating method or by a curtain coating method at one time.
6. The method for improving adhesion of a coating on a synthetic thermal paper substrate according to claim 2, wherein the protective layer (1) comprises a water-soluble resin, a crosslinking agent and a pigment.
7. The method for improving the adhesion of a coating on a synthetic thermal paper substrate according to claim 5 wherein the modified photothermal color promotion layer (5) and the protective layer (1) are applied sequentially by a metering bar or by a curtain coating process in a single pass.
8. The method for improving adhesion of a coating on a synthetic thermal paper substrate according to claim 5, wherein the modified adhesion promoter base layer (4) comprises at least a porous inorganic pigment, an adhesion promoter and a water-based resin; the porous inorganic pigment is calcined kaolin, clay, surface-treated calcium or porous silica; the general dosage of the porous inorganic pigment is 40-75 percent, which refers to the weight ratio of the dried coating; the aqueous resin is used for bonding the porous inorganic pigment and the adhesion promoter, and the adhesive is one or more of polyvinyl alcohol and modified resin thereof, starch and derivatives thereof, cellulose derivatives and water-soluble acrylic resin or aqueous emulsion thereof; the general dosage of the water-based resin is within the range of 20-50 percent; the adhesion promoter is used for improving the bonding force between the coating and the base material, and endows the product with excellent peeling resistance; the accelerator is a chlorinated polyolefin-modified acrylic resin, a chlorinated polyolefin, or the like. Then the dosage of the accelerant is generally in the range of 5-25%;
The materials are ground to target particle size according to the process sequence and then are uniformly mixed, and the materials are coated on a polymer film substrate (3) by adopting a smooth rod, a winding rod or a curtain type coating mode and are dried to form a uniform coating; the coating weight of the dried bottom layer is within the range of 1.0-5.0 g/square meter.
9. The method for improving adhesion of a substrate coating of synthetic thermal paper according to claim 5, wherein the thermo-chromic layer (2) contains a leuco dye and a color developer; separately grinding the leuco dye and the color developing agent to a target particle size to obtain a leuco dye dispersion liquid A and a color developing agent dispersion liquid B, and uniformly mixing the A and the B according to a proportion to obtain a thermosensitive color development layer coating liquid; the grinding target particle size of the dispersion liquid A is 0.2-0.6um, and the grinding target particle size of the dispersion liquid B is 0.5-1.2 um;
formula of dispersion A table:
Formula of dispersion B:
The formula table of the thermo-sensitive coloring layer (2):
the materials are ground to target particle size according to the process sequence and then are uniformly mixed, and the materials are coated on a base material by adopting a smooth rod, a winding rod or a curtain coating mode and are dried to form a uniform coating. The coating weight of the dried thermosensitive color development layer is within the range of 2.0-10.0 g/square meter.
10. The method for improving adhesion of a coating on a synthetic thermal paper substrate according to claim 5, wherein the protective layer (1) comprises a water-soluble resin, a crosslinking agent and a pigment; firstly, adding water into pigment and water-soluble resin, mixing and grinding the mixture until the target particle size is 1.0um, then adding a cross-linking agent, and uniformly mixing to prepare a protective layer 1 coating solution;
formulation of the protective layer (1):
The materials are ground to target particle size according to the process sequence and then are uniformly mixed, and the materials are coated on a base material by adopting a smooth rod, a winding rod or a curtain coating mode and are dried to form a uniform coating. The coating weight of the protective layer after drying is within the range of 0.5-3.0 g/square meter.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011062874A (en) * | 2009-09-16 | 2011-03-31 | Oji Paper Co Ltd | Thermal recording material |
| CN108752615A (en) * | 2018-06-11 | 2018-11-06 | 江苏万宝瑞达高新技术有限公司 | A kind of BOPP thermosensitive film production methods suitable for the printing of UV ink |
| CN109957129A (en) * | 2017-12-26 | 2019-07-02 | 江苏万宝瑞达高新技术有限公司 | A kind of BOPP thermosensitive film and its manufacturing method |
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2020
- 2020-11-19 CN CN202011305135.0A patent/CN112409622A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011062874A (en) * | 2009-09-16 | 2011-03-31 | Oji Paper Co Ltd | Thermal recording material |
| CN109957129A (en) * | 2017-12-26 | 2019-07-02 | 江苏万宝瑞达高新技术有限公司 | A kind of BOPP thermosensitive film and its manufacturing method |
| CN108752615A (en) * | 2018-06-11 | 2018-11-06 | 江苏万宝瑞达高新技术有限公司 | A kind of BOPP thermosensitive film production methods suitable for the printing of UV ink |
Non-Patent Citations (1)
| Title |
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