CN116120615A - Diffusion film for refrigerator LED area light source - Google Patents
Diffusion film for refrigerator LED area light source Download PDFInfo
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- CN116120615A CN116120615A CN202211703692.7A CN202211703692A CN116120615A CN 116120615 A CN116120615 A CN 116120615A CN 202211703692 A CN202211703692 A CN 202211703692A CN 116120615 A CN116120615 A CN 116120615A
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- coating
- light source
- diffusion film
- agent
- pet
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- 238000009792 diffusion process Methods 0.000 title claims abstract description 37
- 239000011248 coating agent Substances 0.000 claims abstract description 93
- 238000000576 coating method Methods 0.000 claims abstract description 93
- 239000000758 substrate Substances 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 20
- -1 polyethylene terephthalate Polymers 0.000 claims abstract description 20
- 239000006224 matting agent Substances 0.000 claims abstract description 19
- 239000000853 adhesive Substances 0.000 claims abstract description 18
- 230000001070 adhesive effect Effects 0.000 claims abstract description 18
- 239000002216 antistatic agent Substances 0.000 claims abstract description 17
- 239000000080 wetting agent Substances 0.000 claims abstract description 17
- 108010010803 Gelatin Proteins 0.000 claims abstract description 15
- 229920000159 gelatin Polymers 0.000 claims abstract description 15
- 239000008273 gelatin Substances 0.000 claims abstract description 15
- 235000019322 gelatine Nutrition 0.000 claims abstract description 15
- 235000011852 gelatine desserts Nutrition 0.000 claims abstract description 15
- 239000012463 white pigment Substances 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 14
- 239000002736 nonionic surfactant Substances 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 238000007765 extrusion coating Methods 0.000 claims description 12
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 11
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 11
- 229920002635 polyurethane Polymers 0.000 claims description 11
- 239000004814 polyurethane Substances 0.000 claims description 11
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 235000012239 silicon dioxide Nutrition 0.000 claims description 7
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 claims description 6
- 150000002148 esters Chemical class 0.000 claims description 6
- 238000002834 transmittance Methods 0.000 claims description 6
- 150000002191 fatty alcohols Chemical class 0.000 claims description 4
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 4
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- 150000004996 alkyl benzenes Chemical class 0.000 claims description 3
- 150000008051 alkyl sulfates Chemical group 0.000 claims description 3
- 239000012874 anionic emulsifier Substances 0.000 claims description 3
- 229940077388 benzenesulfonate Drugs 0.000 claims description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
- 229930195729 fatty acid Natural products 0.000 claims description 3
- 150000004665 fatty acids Chemical class 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- 229920005862 polyol Polymers 0.000 claims description 3
- 150000003077 polyols Chemical class 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 claims description 3
- 229930192474 thiophene Natural products 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims 1
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract description 63
- 239000005020 polyethylene terephthalate Substances 0.000 abstract description 63
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 description 11
- 239000002245 particle Substances 0.000 description 10
- 229920002799 BoPET Polymers 0.000 description 9
- YHOHCZWPIKTKAZ-UHFFFAOYSA-N dihexyl butanedioate;sodium Chemical compound [Na].CCCCCCOC(=O)CCC(=O)OCCCCCC YHOHCZWPIKTKAZ-UHFFFAOYSA-N 0.000 description 9
- 239000000839 emulsion Substances 0.000 description 9
- 229920000728 polyester Polymers 0.000 description 9
- 229920000123 polythiophene Polymers 0.000 description 9
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 9
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 8
- 239000004094 surface-active agent Substances 0.000 description 8
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 5
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 5
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 5
- 235000010215 titanium dioxide Nutrition 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 239000004594 Masterbatch (MB) Substances 0.000 description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 1
- RSWGJHLUYNHPMX-ONCXSQPRSA-N abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- ONJQDTZCDSESIW-UHFFFAOYSA-N polidocanol Chemical compound CCCCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO ONJQDTZCDSESIW-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
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- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C08J7/04—Coating
- C08J7/044—Forming conductive coatings; Forming coatings having anti-static properties
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- 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
- C09D133/04—Homopolymers or copolymers of esters
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- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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- C08J2433/00—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
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- C08J2433/04—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/06—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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Abstract
The invention provides a diffusion film for a refrigerator LED area light source, which comprises a PET (polyethylene terephthalate) substrate, wherein the PET substrate is a porcelain white film added with white pigment, and the front surface of the PET substrate is coated with an environment-friendly water-based coating which plays a role in diffusing light rays; the coating liquid for forming the coating by coating and drying comprises, by weight, 0.5% -3% of gelatin, 0.2% -1% of nonionic surfactant, 0.1% -0.3% of emulsifying agent, 0.02% -0.08% of wetting agent, 8% -15% of adhesive, 1% -3% of antistatic agent, 0.05% -0.2% of matting agent and the balance of pure water. The manufacturing cost of the LED area light source of the refrigerator is reduced, and meanwhile, the performance required by the use of the area light source can be completely met.
Description
Technical Field
The invention relates to a diffusion film, in particular to a diffusion film for a refrigerator LED (light-emitting diode) area light source.
Background
At present, an LED area light source adopted by domestic refrigerator manufacturers is mainly used for converting an LED point light source into an area light source through an acrylic light guide plate. The light guide plate with the sub-gram force has the advantages that the cold and hot expansion coefficient is large, the use environment temperature cannot exceed 85 ℃, the environment with a large temperature difference needs to consider reserving a telescopic gap, and meanwhile, the light guide plate with the sub-gram force is high in price.
Disclosure of Invention
In order to solve the problems, the invention provides the diffusion film for the refrigerator LED area light source, which reduces the manufacturing cost of the refrigerator LED area light source and can completely meet the performance required by the use of the area light source.
The object of the invention is achieved in the following way: the diffusion film for the refrigerator area light source comprises a PET (polyethylene terephthalate) substrate, wherein the PET substrate is a porcelain white film added with white pigment, and the front surface of the PET substrate is coated with an environment-friendly water-based coating which plays a role in diffusing light; the coating liquid for forming the coating by coating and drying comprises, by weight, 0.5% -3% of gelatin, 0.2% -1% of nonionic surfactant, 0.1% -0.3% of emulsifying agent, 0.02% -0.08% of wetting agent, 8% -15% of adhesive, 1% -3% of antistatic agent, 0.05% -0.2% of matting agent and the balance of pure water.
The thickness of the PET substrate is 170-190 microns, the light transmittance is 40-60%, the whiteness is 80-95%, and the haze is 85-92%.
The nonionic surfactant is a fluorosurfactant, a polyoxyethylene ester, or a polyol; the emulsifier is an anionic emulsifier; the wetting agent is sulfonate or fatty acid ester sulfate; the adhesive is modified acrylic ester or modified polyurethane; the antistatic agent is sodium alkyl sulfonate, thiophene, fatty alcohol, polyoxyethylene ether or phosphate, and the matting agent is silicon dioxide or polymethyl methacrylate.
The emulsifier is alkyl sulfate or alkyl benzene sulfonate.
The grain size of the matting agent is more than 10 um.
The grain size of the matting agent is 15-20um.
The coating liquid is subjected to large-axis continuous coating in an extrusion coating mode, and is dried at a high temperature of 100-150 ℃.
The thickness of the coating is 0.5-3.8um, and the surface resistance is 10 7 -10 9 Omega, roughness Ra is 5-10, light transmittance is 40% -60%, and haze is 85% -92%.
Compared with the prior art, the diffusion film for the refrigerator area light source adopts the PET porcelain white film added with the titanium white master batch, and a layer of environment-friendly aqueous coating liquid added with the large-particle matting agent is coated on the PET porcelain white film, and is subjected to primary coating and high-temperature drying. The PET has excellent mechanical properties, high rigidity, hardness and toughness, puncture resistance, friction resistance, high temperature resistance, low temperature resistance, chemical resistance, strong antistatic ability, oil resistance and water resistance. The diffusion film for the refrigerator area light source adopts continuous large-axis coating, and has great advantages compared with an acrylic light guide plate in cost.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The present invention will now be described in detail with reference to specific examples, which are given herein for further illustration only and are not to be construed as limiting the scope of the invention, since numerous insubstantial modifications and adaptations thereof will now occur to those skilled in the art in light of the foregoing disclosure.
As shown in fig. 1, the diffusion film for the refrigerator area light source comprises a PET substrate 1, wherein the PET substrate is a porcelain white film added with white pigment, and the front surface of the PET substrate is coated with an environment-friendly water-based coating 2 which plays a role in diffusing light; the coating liquid for forming the coating by coating and drying comprises, by weight, 0.5% -3% of gelatin, 0.2% -1% of nonionic surfactant, 0.1% -0.3% of emulsifying agent, 0.02% -0.08% of wetting agent, 8% -15% of adhesive, 1% -3% of antistatic agent, 0.05% -0.2% of matting agent and the balance of pure water.
The white pigment is titanium white filler, and can be titanium white master batch. The white porcelain film added with the white pigment can be PET white porcelain film.
The thickness of the PET substrate is 170-190 microns, the light transmittance is 40-60%, the whiteness is 80-95%, and the haze is 85-92%.
The nonionic surfactant is a fluorosurfactant, a polyoxyethylene ester, or a polyol; the emulsifier is an anionic emulsifier; the wetting agent is sulfonate or fatty acid ester sulfate; the adhesive is modified acrylic ester or modified polyurethane; the antistatic agent is sodium alkyl sulfonate, thiophene, fatty alcohol, polyoxyethylene ether or phosphate, and the matting agent is silicon dioxide or polymethyl methacrylate.
The emulsifier is alkyl sulfate or alkyl benzene sulfonate.
The grain size of the matting agent is more than 10 um.
The grain size of the matting agent is 15-20um. The coarse surface agent with the grain diameter in the range is selected, so that a larger gap is formed between the diffusion film and the light source panel, and the diffusion effect is more obvious.
The coating liquid is subjected to large-axis continuous coating in an extrusion coating mode, and is dried at a high temperature of 100-150 ℃.
The dry thickness of the coating is 0.5-3.8um, and the surface resistance is 10 7 -10 9 Omega, roughness Ra is 5-10, light transmittance is 40% -60%, and haze is 85% -92%.
The coating liquid is dried to form a diffusion coating, light enters from the back of the diffusion layer, is scattered by titanium dioxide in the substrate after passing through the porcelain white PET substrate, and is scattered by the matting agent particles in the diffusion layer to form a uniform surface light source. Meanwhile, the matting agent is transparent spherical organic glass beads, and part of light rays can be focused after passing through the spherical matting agent to enhance brightness.
Example 1
The diffusion film for the refrigerator area light source comprises a PET (polyethylene terephthalate) substrate, wherein the PET substrate is a porcelain white film added with white pigment, and the front surface of the PET substrate is coated with an environment-friendly water-based coating which plays a role in diffusing light; the coating liquid for coating and drying to form the coating comprises, by weight, 0.96% of gelatin, 0.5% of fluorocarbon surfactant, 0.15% of sodium dodecyl sulfate as an emulsifier, 0.05% of sodium dihexyl succinate sulfonate as a wetting agent, 15% of modified acrylate emulsion as an adhesive, 1.2% of polythiophene as an antistatic agent, 15um of polymethyl methacrylate particles as a rough surface agent, 0.12% of pure water as the rest. The coating liquid is used for carrying out large-axis continuous coating in an extrusion coating mode, and is dried at a high temperature of 100 ℃ to obtain a coating with a dry thickness of 1.2um.
The PET film polyester support in this example was a PET porcelain white film produced by Lekewa light printing technology Co., ltd., thickness of 188 μm.
The diffusion film for a surface light source of a refrigerator prepared in example 1 has the following test properties
Example 2
The diffusion film for the refrigerator area light source comprises a PET (polyethylene terephthalate) substrate, wherein the PET substrate is a porcelain white film added with white pigment, and the front surface of the PET substrate is coated with an environment-friendly water-based coating which plays a role in diffusing light; the coating liquid for coating and drying to form the coating comprises, by weight, 0.5% of gelatin, 0.2% of fluorocarbon surfactant, 0.1% of sodium dodecyl sulfate as an emulsifier, 0.02% of sodium dihexyl succinate sulfonate as a wetting agent, 8% of polyurethane emulsion as an adhesive, 1% of polythiophene as an antistatic agent, 15um of polymethyl methacrylate particles as a rough surface agent, 0.05% of pure water as the rest. The coating liquid is used for carrying out large-axis continuous coating in an extrusion coating mode, and is dried at a high temperature of 100 ℃ to obtain a coating with a dry thickness of 0.9um.
The PET film polyester support in this example was a PET porcelain white film produced by Lekewa light printing technology Co., ltd., thickness of 188 μm.
The diffusion film for a refrigerator surface light source prepared in example 2 has the following test properties:
example 3
The diffusion film for the refrigerator area light source comprises a PET (polyethylene terephthalate) substrate, wherein the PET substrate is a porcelain white film added with white pigment, and the front surface of the PET substrate is coated with an environment-friendly water-based coating which plays a role in diffusing light; the coating liquid for coating and drying to form the coating comprises, by weight, 3% of gelatin, 1% of fluorocarbon surfactant, 0.3% of sodium dodecyl sulfate as an emulsifier, 0.08% of sodium dihexyl succinate sulfonate as a wetting agent, 15% of polyurethane emulsion as an adhesive, 3% of polythiophene as an antistatic agent, 15um polymethyl methacrylate particles as a rough surface agent, 0.2% of pure water as a rest. The coating liquid is used for carrying out large-axis continuous coating in an extrusion coating mode, and is dried at a high temperature of 100 ℃ to obtain a coating with a dry thickness of 3.8um.
The PET film polyester support in this example was a PET porcelain white film produced by Lekewa light printing technology Co., ltd., thickness of 188 μm.
The diffusion film for a refrigerator surface light source prepared in example 3 has the following test properties:
example 4
The diffusion film for the refrigerator area light source comprises a PET (polyethylene terephthalate) substrate, wherein the PET substrate is a porcelain white film added with white pigment, and the front surface of the PET substrate is coated with an environment-friendly water-based coating which plays a role in diffusing light; the coating liquid for coating and drying to form the coating comprises, by weight, 1.97% of gelatin, 0.6% of fluorocarbon surfactant, 0.15% of sodium dodecyl sulfate as an emulsifier, 0.05% of sodium dihexyl succinate sulfonate as a wetting agent, 11.7% of polyurethane emulsion as an adhesive, 1.5% of polythiophene as an antistatic agent, 15um of polymethyl methacrylate particles as a rough surface agent, 0.12% of pure water as the rest. The coating liquid is used for carrying out large-axis continuous coating in an extrusion coating mode, and is dried at a high temperature of 100 ℃ to obtain a coating with a dry thickness of 2.3um.
The PET film polyester support in this example was a PET porcelain white film produced by Lekewa light printing technology Co., ltd., thickness of 188 μm.
The diffusion film for a refrigerator surface light source prepared in example 4 has the following test properties:
the diffusion film for a refrigerator surface light source may be the following examples:
example 5
The diffusion film for the refrigerator area light source comprises a PET (polyethylene terephthalate) substrate, wherein the PET substrate is a porcelain white film added with white pigment, and the front surface of the PET substrate is coated with an environment-friendly water-based coating which plays a role in diffusing light; the coating liquid for coating and drying to form the coating comprises, by weight, 1.25% of gelatin, 0.8% of fluorocarbon surfactant, 0.20% of sodium dodecyl benzene sulfonate as an emulsifier, 0.05% of sodium dihexyl succinate sulfonate as a wetting agent, 10.0% of polyurethane emulsion as an adhesive, 1.5% of polythiophene as an antistatic agent, 10um of polymethyl methacrylate particles as a rough surface agent, 0.12% of pure water as the rest. The coating liquid is used for carrying out large-axis continuous coating in an extrusion coating mode, and is dried at a high temperature of 100 ℃ to obtain a coating with a dry thickness of 1.8um.
The PET film polyester support in this example was a PET porcelain white film produced by Lekewa light printing technology Co., ltd., thickness of 188 μm.
Example 6
The diffusion film for the refrigerator area light source comprises a PET (polyethylene terephthalate) substrate, wherein the PET substrate is a porcelain white film added with white pigment, and the front surface of the PET substrate is coated with an environment-friendly water-based coating which plays a role in diffusing light; the coating liquid for coating and drying to form the coating comprises, by weight, 1.80% of gelatin, 0.4% of fluorocarbon surfactant as nonionic surfactant, 0.25% of sodium dodecyl benzene sulfonate as emulsifier, 0.06% of sodium dihexyl succinate sulfonate as wetting agent, 12.5% of polyurethane emulsion as adhesive, 1.8% of polythiophene as antistatic agent, 20um of polymethyl methacrylate particles as matting agent, 0.10% of pure water as the rest. The coating liquid is used for carrying out large-axis continuous coating in an extrusion coating mode, and is dried at a high temperature of 100 ℃ to obtain a coating with a dry thickness of 2.2um.
The PET film polyester support used in this example was a PET porcelain white film produced by Lekewa light printing technologies Co., ltd., thickness of 190. Mu.m.
Example 7
The diffusion film for the refrigerator area light source comprises a PET (polyethylene terephthalate) substrate, wherein the PET substrate is a porcelain white film added with white pigment, and the front surface of the PET substrate is coated with an environment-friendly water-based coating which plays a role in diffusing light; the coating liquid for coating and drying to form the coating comprises, by weight, 2.20% of gelatin, 0.5% of fluorocarbon surfactant, 0.13% of sodium dodecyl benzene sulfonate as an emulsifier, 0.03% of sodium dihexyl succinate sulfonate as a wetting agent, 11.5% of polyurethane emulsion as an adhesive, 2.8% of polythiophene as an antistatic agent, 18um of silicon dioxide as a rough surface agent, 0.12% of silicon dioxide as a rough surface agent, and the balance of pure water. The coating liquid is used for carrying out large-axis continuous coating in an extrusion coating mode, and is dried at a high temperature of 100 ℃ to obtain a coating with a dry thickness of 2.4um.
The PET film polyester support in this example was a PET porcelain white film produced by Lekewa light printing technology Co., ltd., thickness of 188 μm.
Example 8
The diffusion film for the refrigerator area light source comprises a PET (polyethylene terephthalate) substrate, wherein the PET substrate is a porcelain white film added with white pigment, and the front surface of the PET substrate is coated with an environment-friendly water-based coating which plays a role in diffusing light; the coating liquid for coating and drying to form the coating comprises, by weight, 2.60% of gelatin, 0.5% of fluorocarbon surfactant, 0.15% of sodium dodecyl benzene sulfonate as an emulsifier, 0.05% of sodium dihexyl succinate sulfonate as a wetting agent, 10.5% of polyurethane emulsion as an adhesive, 1.2% of polythiophene as an antistatic agent, 12um of silicon dioxide as a rough surface agent, 0.08% of silicon dioxide as a rough surface agent, and the balance of pure water. The coating liquid is used for carrying out large-axis continuous coating in an extrusion coating mode, and is dried at a high temperature of 100 ℃ to obtain a coating with a dry thickness of 2.8um.
The PET film polyester support in this example was a PET porcelain white film produced by Lekewa light printing technology Co., ltd., thickness of 188 μm.
Example 9
The diffusion film for the refrigerator area light source comprises a PET (polyethylene terephthalate) substrate, wherein the PET substrate is a porcelain white film added with white pigment, and the front surface of the PET substrate is coated with an environment-friendly water-based coating which plays a role in diffusing light; the coating liquid for coating and drying to form a coating comprises, by weight, 0.8% of gelatin, 0.88% of fatty alcohol polyoxyethylene ether as a nonionic surfactant, 0.18% of sodium dodecyl sulfate as an emulsifier, 0.06% of sodium dihexyl succinate sulfonate as a wetting agent, 12% of modified acrylate emulsion as an adhesive, 1.2% of polythiophene as an antistatic agent, 18um of polymethyl methacrylate particles as a rough surface agent, 0.08% of pure water as the rest. The coating liquid is used for carrying out large-axis continuous coating in an extrusion coating mode, and is dried at a high temperature of 100 ℃ to obtain a coating with a dry thickness of 1.1um.
The PET film polyester support in this example was a PET porcelain white film produced by Lekewa light printing technology Co., ltd., thickness of 188 μm.
In the embodiment of the application, the gelatin is bone gelatin of Sichuan Ruibao biotechnology Co., ltd; the nonionic surfactant is CF-600 of Jinan zifluoro New Material technology Co., ltd and AEO-9 of Jinan remote chemical Co., ltd; the emulsifier is sodium dodecyl sulfate or sodium dodecyl benzene sulfonate of Tianjin far chemical reagent limited company; the wetting agent is MA-80 of Wu Hanhai mountain technology Co., ltd; the adhesive is polyurethane adhesive NS-310X or modified acrylic adhesive A-110F manufactured by Japanese high rosin Co; the antistatic agent is PEDOT/PSS manufactured by Anhui Kuer Biotechnology Co., ltd; the matting agent is PMMA particles produced by Guangdong guan Guangdong plasticizing Co, guangzhou, or silicon dioxide powder produced by Bowa nano technology Co.
While only the preferred embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and it should be noted that equivalents and modifications, variations and improvements made according to the technical solution of the present invention and the inventive concept thereof, as well as those skilled in the art, should be considered as the scope of the present invention, without departing from the general inventive concept thereof.
Claims (8)
1. The utility model provides a diffusion barrier for refrigerator area light source, includes the PET substrate, and the PET substrate is the porcelain white film that has added white pigment, its characterized in that: the front surface of the PET substrate is coated with an environment-friendly water-based coating for diffusing light; the coating liquid for forming the coating by coating and drying comprises, by weight, 0.5% -3% of gelatin, 0.2% -1% of nonionic surfactant, 0.1% -0.3% of emulsifying agent, 0.02% -0.08% of wetting agent, 8% -15% of adhesive, 1% -3% of antistatic agent, 0.05% -0.2% of matting agent and the balance of pure water.
2. The diffusion film for a surface light source of a refrigerator according to claim 1, wherein: the thickness of the PET substrate is 170-190 microns, the light transmittance is 40-60%, the whiteness is 80-95%, and the haze is 85-92%.
3. The diffusion film for a surface light source of a refrigerator according to claim 1, wherein: the nonionic surfactant is a fluorosurfactant, a polyoxyethylene ester, or a polyol; the emulsifier is an anionic emulsifier; the wetting agent is sulfonate or fatty acid ester sulfate; the adhesive is modified acrylic ester or modified polyurethane; the antistatic agent is sodium alkyl sulfonate, thiophene, fatty alcohol, polyoxyethylene ether or phosphate, and the matting agent is silicon dioxide or polymethyl methacrylate.
4. The diffusion film for a surface light source of a refrigerator according to claim 3, wherein: the emulsifier is alkyl sulfate or alkyl benzene sulfonate.
5. The diffusion film for a surface light source of a refrigerator according to claim 1, wherein: the grain size of the matting agent is more than 10 um.
6. The diffusion film for a surface light source of a refrigerator according to claim 5, wherein: the grain size of the matting agent is 15-20um.
7. The diffusion film for a surface light source of a refrigerator according to claim 1, wherein: the coating liquid is subjected to large-axis continuous coating in an extrusion coating mode, and is dried at a high temperature of 100-150 ℃.
8. The diffusion film for a surface light source of a refrigerator according to claim 5, wherein: the thickness of the coating is 0.5-3.8um, and the surface resistance is 10 7 -10 9 Omega, roughness Ra is 5-10, light transmittance is 40% -60%, and haze is 85% -92%.
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CN112871602A (en) * | 2020-12-08 | 2021-06-01 | 深圳市长松科技有限公司 | Coating process and optical diffusion film |
CN114835938A (en) * | 2022-06-08 | 2022-08-02 | 乐凯医疗科技有限公司 | Polyester film base for medical dry film and preparation method thereof |
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JP2006208993A (en) * | 2005-01-31 | 2006-08-10 | Toyobo Co Ltd | Light diffusing film |
KR20090073675A (en) * | 2007-12-31 | 2009-07-03 | 주식회사 코오롱 | Diffusion film |
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