CN115534555A - Printing heat-sensitive film - Google Patents
Printing heat-sensitive film Download PDFInfo
- Publication number
- CN115534555A CN115534555A CN202211324215.XA CN202211324215A CN115534555A CN 115534555 A CN115534555 A CN 115534555A CN 202211324215 A CN202211324215 A CN 202211324215A CN 115534555 A CN115534555 A CN 115534555A
- Authority
- CN
- China
- Prior art keywords
- coating
- parts
- adhesive
- film
- sensitive film
- 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
Links
- 238000007639 printing Methods 0.000 title claims abstract description 25
- 238000000576 coating method Methods 0.000 claims abstract description 85
- 239000011248 coating agent Substances 0.000 claims abstract description 84
- 239000000853 adhesive Substances 0.000 claims abstract description 50
- 230000001070 adhesive effect Effects 0.000 claims abstract description 50
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 239000000839 emulsion Substances 0.000 claims abstract description 7
- 239000004816 latex Substances 0.000 claims abstract description 7
- 229920000126 latex Polymers 0.000 claims abstract description 7
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 6
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 6
- 229920005792 styrene-acrylic resin Polymers 0.000 claims abstract description 6
- 229920001038 ethylene copolymer Polymers 0.000 claims abstract description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 4
- 239000000945 filler Substances 0.000 claims description 21
- 239000010410 layer Substances 0.000 claims description 17
- 239000011253 protective coating Substances 0.000 claims description 17
- 239000003431 cross linking reagent Substances 0.000 claims description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000011241 protective layer Substances 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 239000003921 oil Substances 0.000 claims description 8
- KZTYYGOKRVBIMI-UHFFFAOYSA-N diphenyl sulfone Chemical compound C=1C=CC=CC=1S(=O)(=O)C1=CC=CC=C1 KZTYYGOKRVBIMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000002174 Styrene-butadiene Substances 0.000 claims description 5
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 5
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 claims 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 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 239000011115 styrene butadiene Substances 0.000 claims description 5
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 4
- 239000012948 isocyanate Substances 0.000 claims description 3
- PNKZBZPLRKCVLI-UHFFFAOYSA-N (2-methylpropan-2-yl)oxybenzene Chemical compound CC(C)(C)OC1=CC=CC=C1 PNKZBZPLRKCVLI-UHFFFAOYSA-N 0.000 claims description 2
- PICKZMGDVSSGSC-UHFFFAOYSA-N 2-(2-phenoxyethoxy)ethoxybenzene Chemical compound C=1C=CC=CC=1OCCOCCOC1=CC=CC=C1 PICKZMGDVSSGSC-UHFFFAOYSA-N 0.000 claims description 2
- ZTILAOCGFRDHBH-UHFFFAOYSA-N 4-(4-propan-2-yloxyphenyl)sulfonylphenol Chemical compound C1=CC(OC(C)C)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 ZTILAOCGFRDHBH-UHFFFAOYSA-N 0.000 claims description 2
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 claims description 2
- 229930185605 Bisphenol Natural products 0.000 claims description 2
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- FAUWZWLKVDVEDE-UHFFFAOYSA-N [3-[carbamoyl-(4-methylphenyl)sulfonylamino]phenyl] 4-methylbenzenesulfonate Chemical compound C1=CC(C)=CC=C1S(=O)(=O)OC1=CC=CC(N(C(N)=O)S(=O)(=O)C=2C=CC(C)=CC=2)=C1 FAUWZWLKVDVEDE-UHFFFAOYSA-N 0.000 claims description 2
- IBVAQQYNSHJXBV-UHFFFAOYSA-N adipic acid dihydrazide Chemical compound NNC(=O)CCCCC(=O)NN IBVAQQYNSHJXBV-UHFFFAOYSA-N 0.000 claims description 2
- 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 claims description 2
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 claims description 2
- 150000002513 isocyanates Chemical class 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 239000002987 primer (paints) Substances 0.000 claims 3
- LCJQCYQTWIAJBE-UHFFFAOYSA-N 2,4-bis(benzenesulfonyl)phenol Chemical compound OC1=CC=C(S(=O)(=O)C=2C=CC=CC=2)C=C1S(=O)(=O)C1=CC=CC=C1 LCJQCYQTWIAJBE-UHFFFAOYSA-N 0.000 claims 1
- 239000004971 Cross linker Substances 0.000 claims 1
- 150000003457 sulfones Chemical class 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 5
- 210000002469 basement membrane Anatomy 0.000 abstract description 4
- 230000009477 glass transition Effects 0.000 abstract description 4
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004026 adhesive bonding Methods 0.000 abstract 3
- OCKPCBLVNKHBMX-UHFFFAOYSA-N butylbenzene Chemical compound CCCCC1=CC=CC=C1 OCKPCBLVNKHBMX-UHFFFAOYSA-N 0.000 abstract 2
- 239000007788 liquid Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 239000004721 Polyphenylene oxide Substances 0.000 description 3
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 3
- 238000009775 high-speed stirring Methods 0.000 description 3
- 229920000570 polyether Polymers 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- -1 fatty acid lipid Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XCSGHNKDXGYELG-UHFFFAOYSA-N 2-phenoxyethoxybenzene Chemical group C=1C=CC=CC=1OCCOC1=CC=CC=C1 XCSGHNKDXGYELG-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 125000004069 aziridinyl group Chemical group 0.000 description 1
- MFNBIFIIOMBFHH-UHFFFAOYSA-N benzenesulfonylbenzene;phenol Chemical compound OC1=CC=CC=C1.C=1C=CC=CC=1S(=O)(=O)C1=CC=CC=C1 MFNBIFIIOMBFHH-UHFFFAOYSA-N 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 238000007644 letterpress printing Methods 0.000 description 1
- 210000004379 membrane Anatomy 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical group [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5254—Macromolecular coatings characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
-
- 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
- C09D109/00—Coating compositions based on homopolymers or copolymers of conjugated diene hydrocarbons
- C09D109/06—Copolymers with styrene
- C09D109/08—Latex
-
- 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
- C09D125/00—Coating compositions based on 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 aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
-
- 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
- C09D131/00—Coating compositions based on 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 acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Coating compositions based on derivatives of such polymers
- C09D131/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C09D131/04—Homopolymers or copolymers of vinyl acetate
-
- 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
- C09D133/00—Coating compositions based on 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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- 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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
Abstract
The application discloses printing heat-sensitive film, including basement membrane, coating and printing ink, the coating is coated on the basement membrane, printing ink prints on the coating, its characterized in that, contain the gluing agent in the coating, the gluing agent is one or more of butylbenzene latex, styrene acrylic resin, polyvinyl alcohol, acrylic resin, vinyl acetate and ethylene copolymer emulsion, just the TG scope-50 ~ 50 ℃ of gluing agent. The film has the following beneficial effects: adding adhesive with glass transition temperature ranging from minus 50 ℃ to 50 ℃ into the coating, and preferably selecting TG with the range ranging from minus 20 ℃ to plus 40 ℃. The adhesive and the particles in the coating act to form a compact structure, so that the fastness of the coating is improved, and the adhesion strength of the ink on the coating is improved.
Description
Technical Field
The invention relates to the field of film printing, in particular to a printing thermosensitive film.
Background
Along with the rise of printing package, the printing technology is continuously improved, the quality of printed products is also greatly improved, and the market competitiveness of the printed products is greatly improved. As the field of application of heat-sensitive films expands, more and more heat-sensitive products have printing requirements. Film printing is a highly specialized technique, so that heat-sensitive films often suffer from a series of problems in gravure, letterpress and flexographic printing, of which poor ink adhesion is one of the common problems.
In order to improve the ink adhesion, patent publication CN112409622A discloses a method for improving the adhesion of a coating on a thermal paper substrate, in which the adhesion between layers is improved by adding a chlorinated polyolefin modified acrylic emulsion to the coating, and the adhesion strength of the ink on the film is indirectly improved by enhancing the adhesion between the coating and the coating, but the addition of a chlorinated polyolefin modified acrylic emulsion cannot effectively improve the adhesion strength of the ink on the film because the adhesion strength between the ink and the coating cannot be improved.
Disclosure of Invention
The invention aims at the problems and provides a printing heat-sensitive film.
The technical scheme adopted by the invention is as follows:
a printing heat-sensitive film comprises a bottom film, a coating and printing ink, wherein the coating is coated on the bottom film, the printing ink is printed on the coating, the coating contains an adhesive, the adhesive is styrene-butadiene latex or styrene acrylic resin or polyvinyl alcohol or acrylic resin or a single emulsion or a mixture of vinyl acetate and ethylene copolymer, the TG (glass transition temperature) range of the adhesive is-50 ℃ to 50 ℃, and the preferable TG range is-20 ℃ to +40 ℃.
In the thermosensitive film, the coating is added with the adhesive, the adhesive is one or more of styrene-butadiene latex, styrene acrylic resin, polyvinyl alcohol, acrylic resin, vinyl acetate and ethylene copolymer emulsion, and the adhesive has a self-crosslinking structure or a compact structure which can be effectively formed with particles in the coating under the condition of adding the crosslinking agent, so that the adhesive strength between the coating and the printing ink can be increased, and the adhesive fastness of the printing ink is improved.
In conclusion, the adhesive with the glass transition temperature ranging from minus 50 ℃ to 50 ℃ is added into the coating, and the preferable TG range is from minus 20 ℃ to plus 40 ℃. The adhesive and the particles in the coating act to form a compact structure, so that the adhesive strength of the ink on the coating is increased.
Optionally, the coating includes a primer layer, a top coat layer and a protective coating layer, the primer layer is coated on the primer layer, the top coat layer is coated on the primer layer, the protective coating layer is coated on the top coat layer, and the ink is printed on the protective coating layer; the base coat comprises 40-80 parts of adhesive and 2-10 parts of cross-linking agent;
the top coating comprises 50-100 parts of filler, 50-100 parts of color developing agent, 0-100 parts of sensitizer, 40-80 parts of adhesive, 50-120 parts of dye, 1-5 parts of defoaming agent and 2-8 parts of flatting agent;
the protective coating comprises 30-100 parts of filler, 40-80 parts of adhesive, 2-20 parts of cross-linking agent, 10-30 parts of lubricant and 1-5 parts of flatting agent.
The coating is further subdivided into a bottom coating, a top coating and a protective coating, adhesives are used in a three-layer framework of the bottom coating, the top coating and the protective layer, and the TG range of the adhesives is between 50 ℃ below zero and 50 ℃ below zero, and the preferable TG range is between 20 ℃ below zero and 40 ℃. The adhesive has a compact structure which can be effectively formed with particles in coating liquid under the condition of self-crosslinking or external crosslinking agent, effectively improves the binding force between a bottom coating and a bottom membrane, between the bottom coating and a top coating, between a top coating and a protective coating, and between the protective coating and an ink layer, and ensures that the cohesive force of the adhesive is greater than the stripping force between an adhesive tape and the ink layer.
Optionally, the filler is one or more of calcium carbonate, silica, aluminum hydroxide and china clay, and the oil absorption value of the filler in the protective coating is 50g/100 g-450 g/100g.
The calcium carbonate, the silicon dioxide, the aluminum hydroxide and the porcelain clay all have certain oil absorption, so that the filler with a certain oil absorption value is used in the protective coating to increase the absorptivity of the ink, and the combination of the calcium carbonate, the silicon dioxide, the aluminum hydroxide and the porcelain clay effectively solves the problem that the ink and the coating fall off when the thermosensitive film is printed in a gravure printing mode, a letterpress printing mode or a flexible printing mode.
Optionally, the crosslinking agent is one or more of isocyanate, adipic acid dihydrazide, polyamide epichlorohydrin and aziridine.
Optionally, the color developing agent is one or more of 4-hydroxy-4' isopropoxydiphenyl sulfone, 2,4 diphenyl sulfone phenol, N- (p-toluenesulfonyl) -N- (3-p-toluenesulfonyloxyphenyl) urea, 4-hydroxy-4-N-propoxy diphenyl sulfone and bisphenol S4, 4.
Optionally, the sensitizer is one or more of diethylene glycol diphenyl ether, dimethyl phenoxy ethane and diphenyl sulfone.
Optionally, the dye is 2- (2-4-dimethylanilino) -3-methyl-6-diethylaminofluorane.
Optionally, the defoaming agent is one or more of silane modified acetylenic diol and fatty acid lipid.
Optionally, the leveling agent is one or more of acetylene glycol and polyether modified siloxane.
Optionally, the coating weight of the base coat is 0.5-8g/m 2 (ii) a The coating weight of the top coating is 3-12g/m 2 (ii) a The coating weight of the protective layer is 0.5-4g/m 2 。
Optionally, the bottom film is a PET bottom film or a PE bottom film or a PP bottom film.
Optionally, the density of the base film is 0.5g/m 3 -2g/m 3 。
The thickness of the basement membrane is 20-300 μm, and the density of the basement membrane is 0.5g/m 3 -2g/m 3 。
The invention has the beneficial effects that: the coating is added with the adhesive with the glass transition temperature ranging from minus 50 ℃ to 50 ℃, preferably, the TG range is between minus 20 ℃ and plus 40 ℃, a compact structure is formed by the action of the adhesive and the particles in the coating, and the adhesive strength of the ink on the coating is increased. Meanwhile, the high oil absorption value filler is used in the protective layer to increase the ink absorptivity and increase the ink adhesive force.
The specific implementation mode is as follows:
the present invention will be described in detail with reference to examples.
Example 1
The base is coated with the formula: 45 parts of adhesive and 5 parts of cross-linking agent;
the adhesive is acrylic resin, and the TG of the adhesive is about 8 ℃;
the cross-linking agent is isocyanate;
preparing the prime coat filler and the adhesive into a coating liquid with a solid content of 30% according to absolute dry mass parts under a high-speed stirring condition, and uniformly coating the prime coat on the coating liquid with a thickness of 68 mu m and a density of 0.74g/m by using a coating machine 3 The surface of the PP film (as a base film) was coated in an amount of 3 g/square meter, and the base coat was applied to the base film immediately after the coating was completed.
The formula of the top coating comprises the following components: 80 parts of filler, 80 parts of color developing agent, 80 parts of sensitizer, 50 parts of adhesive, 80 parts of dye, 5 parts of defoaming agent and 6 parts of flatting agent;
the surface coating filler is aluminum hydroxide, the color developing agent is 4-hydroxy-4-n-propoxy diphenyl sulfone, the sensitizer is 1, 2-diphenoxy ethane, the adhesive is styrene-butadiene latex, the TG is 17 ℃, the dye is 2- (2-4-xylidine) -3-methyl-6-diethylaminofluorane, the defoaming agent is silane modified alkynediol, and the flatting agent is polyether modified siloxane;
and (3) preparing the surface coating components into a surface coating liquid with the solid content of 30% under the condition of high-speed stirring according to absolute dry mass parts, and finally uniformly coating the surface coating liquid above the bottom coating by using a coating machine, wherein the coating quantity of the surface coating is controlled to be 8 g/square meter.
The formula of the protective layer is as follows: 100 parts of filler, 80 parts of adhesive, 5 parts of crosslinking agent, 30 parts of lubricant and 2 parts of flatting agent;
the protective layer filler is light calcium carbonate, the oil absorption values of the protective layer filler are 90g/100g respectively, the adhesive is styrene acrylic resin, the TG of the protective layer filler is 28 ℃, the crosslinking agent is aziridine, the lubricant is zinc stearate, and the leveling agent is polyether modified siloxane;
the protection layer components are prepared into coating liquid with the solid content of 25 percent under the condition of high-speed stirring according to absolute dry mass fraction, and the coating liquid is coated above a top coating by using a coating machine, wherein the coating quantity is 3 g/square meter.
Finally, the finished product thermosensitive film is printed with ink by using an IGT C1 printing adaptation instrument, wherein the ink can be printed by using a super-color flexible plate or Hangzhou 161 relief printing, and the ink amount is 1-2g/m 2 。
Example 2:
this example differs from example 1 in that the PP film used in example 1 was changed to 50 μm PE with a density of 1.4g/m 3 The coating proportion and the coating method of the rest of the bottom coating, the top coating and the protective coating are kept unchanged.
Example 3:
the difference between this example and example 1 is that the mixture ratio and preparation method of the bottom coating and the protective coating in this example are the same as those in example 1, the adhesive in the top coating is changed to styrene acrylic latex, TG is 29 ℃, and the amount of the adhesive in the top coating in this example is the same as that in the top coating in example 1.
Example 4:
this example is different from example 3 in that the primary coating in example 3 was changed to a density of 0.7g/m 3 In the case of PP with a thickness of 48 mu m, the adhesive in the bottom coating is changed into a TG (vinyl acetate-ethylene copolymer) emulsion with a temperature of-12 ℃, but the addition amount of the adhesive in the bottom coating is consistent with that of the adhesive in the bottom coating in example 1, the components and the proportion of the top coating are unchanged, the adhesive in the protective coating is changed into TG (acrylic resin) with a temperature of about-20 ℃ (the addition amount of the adhesive in the protective coating is consistent with that of the adhesive in the protective coating in example 1), no cross-linking agent is added, and 50% of the filler is replaced by silicon dioxide with an oil absorption value of 200g/100 g.
Comparative example 1
This example differs from example 1 in that the primer layer in this example was not modified with the addition of a cross-linking agent, and the rest was identical to example 1.
Comparative example 2:
this example differs from example 2 in that it replaces the adhesive in the top coat in example 2 with styrene-butadiene latex having a TG of about 60 ℃ (the amount of adhesive added in the top coat is the same as the amount of adhesive added in the top coat in example 2), and the remainder is the same as the base coat and the protective coat in example 2.
Comparative example 3:
the present example is different from example 3 in that the filler in the protective layer was replaced with china clay having an oil absorption value of 30g/100g, and the amount of the filler added was the same as in example 3, except that it was the same as in example 3.
Comparative example 4:
this example is different from example 4 in that the adhesive of the protective layer in this example was replaced with a styrene acrylic resin having TG of about 80 c, and the amount of filler added was the same as in example 4, except that it was identical with example 4.
The four examples and the four comparative examples were tested as shown in table 1 below, using a type 810 tape and a type 600 tape from 3M company, respectively, for post-tack tear testing.
Table 1: test results
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, which is defined by the claims and their equivalents, and can be directly or indirectly applied to other related fields of technology.
Claims (9)
1. The printing thermosensitive film comprises a base film and a coating, wherein the coating is coated on the base film and is used for printing ink, and is characterized in that the coating contains an adhesive, the adhesive is one or more of styrene-butadiene latex, styrene acrylic resin, polyvinyl alcohol, acrylic resin, vinyl acetate-ethylene copolymer emulsion, and the TG range of the adhesive is-50 ℃.
2. The printed heat-sensitive film of claim 1, wherein the coating comprises a primer coating applied to the base film, a topcoat coating applied to the primer coating, and a protective coating applied to the topcoat coating; the base coat comprises 40-80 parts of adhesive and 2-10 parts of cross-linking agent;
the top coat comprises 50-100 parts of filler, 50-100 parts of color developing agent, 0-100 parts of sensitizer, 40-80 parts of adhesive, 50-120 parts of dye, 1-5 parts of defoaming agent and 2-8 parts of flatting agent;
the protective coating comprises 30-100 parts of filler, 40-80 parts of adhesive, 2-20 parts of cross-linking agent, 10-30 parts of lubricating agent and 1-5 parts of flatting agent.
3. The printed heat-sensitive film of claim 2, wherein the filler is one or more of calcium carbonate, silica, aluminum hydroxide, china clay, and the oil absorption of the filler in the protective coating is from 50g/100g to 450g/100g.
4. The printing heat-sensitive film according to claim 2, wherein the developer is one or more of 4-hydroxy-4' isopropoxydiphenyl sulfone, 2,4 diphenylsulfonylphenol, N- (p-toluenesulfonyl) -N- (3-p-toluenesulfonyloxyphenyl) urea, 4-hydroxy-4-N-propoxydiphenyl sulfone, bisphenol S4, 4.
5. The printed heat-sensitive film of claim 2, wherein the crosslinker is one or more of isocyanate, adipic dihydrazide, polyamide epichlorohydrin, aziridine.
6. The printed heat sensitive film of claim 2, wherein the sensitizer is one or more of diethylene glycol diphenyl ether, dimethyl phenoxy ethane, diphenyl sulfone.
7. The printed heat-sensitive film of claim 2, wherein the primer layer is applied in an amount of 0.5 to 8g/m 2 (ii) a The coating weight of the top coating is 3-12g/m 2 (ii) a The coating weight of the protective layer is 0.5-4g/m 2 。
8. The printed heat-sensitive film according to claim 1, wherein the base film is a PET base film or a PE base film or a PP base film.
9. The printing heat-sensitive film of claim 1 or 8, wherein the density of the base film is 0.5g/m 3 -2g/m 3 。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118306120A (en) * | 2024-04-08 | 2024-07-09 | 广东金大新材料有限公司 | Printing thermosensitive film and preparation method thereof |
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