CN113265195A - PET heat-sealing film coating antifogging agent, PET antifogging easy-to-uncover film and preparation method and application thereof - Google Patents
PET heat-sealing film coating antifogging agent, PET antifogging easy-to-uncover film and preparation method and application thereof Download PDFInfo
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- CN113265195A CN113265195A CN202110557582.3A CN202110557582A CN113265195A CN 113265195 A CN113265195 A CN 113265195A CN 202110557582 A CN202110557582 A CN 202110557582A CN 113265195 A CN113265195 A CN 113265195A
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- 238000007789 sealing Methods 0.000 title claims abstract description 75
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 63
- 239000007888 film coating Substances 0.000 title claims abstract description 17
- 238000009501 film coating Methods 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 48
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 24
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000003054 catalyst Substances 0.000 claims abstract description 18
- 239000003999 initiator Substances 0.000 claims abstract description 14
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004203 carnauba wax Substances 0.000 claims abstract description 12
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 12
- CJGJYOBXQLCLRG-UHFFFAOYSA-M sodium;2-hydroxy-3-prop-2-enoxypropane-1-sulfonate Chemical compound [Na+].[O-]S(=O)(=O)CC(O)COCC=C CJGJYOBXQLCLRG-UHFFFAOYSA-M 0.000 claims abstract description 12
- 239000008234 soft water Substances 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims description 27
- 238000000576 coating method Methods 0.000 claims description 27
- 239000010410 layer Substances 0.000 claims description 24
- 238000004806 packaging method and process Methods 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 13
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 11
- 229920005906 polyester polyol Polymers 0.000 claims description 11
- 238000003851 corona treatment Methods 0.000 claims description 10
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 8
- 239000012793 heat-sealing layer Substances 0.000 claims description 8
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000002518 antifoaming agent Substances 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000013522 chelant Substances 0.000 claims description 4
- 229910052681 coesite Inorganic materials 0.000 claims description 4
- 229910052906 cristobalite Inorganic materials 0.000 claims description 4
- 239000012760 heat stabilizer Substances 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 229910052682 stishovite Inorganic materials 0.000 claims description 4
- ADDWXBZCQABCGO-UHFFFAOYSA-N titanium(iii) phosphide Chemical compound [Ti]#P ADDWXBZCQABCGO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052905 tridymite Inorganic materials 0.000 claims description 4
- DQWPFSLDHJDLRL-UHFFFAOYSA-N triethyl phosphate Chemical compound CCOP(=O)(OCC)OCC DQWPFSLDHJDLRL-UHFFFAOYSA-N 0.000 claims description 4
- 239000004643 cyanate ester Substances 0.000 claims 1
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 239000005057 Hexamethylene diisocyanate Substances 0.000 abstract description 11
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 abstract description 11
- 239000013530 defoamer Substances 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 229910004298 SiO 2 Inorganic materials 0.000 abstract 1
- 239000010408 film Substances 0.000 description 89
- 229920000139 polyethylene terephthalate Polymers 0.000 description 74
- 239000000463 material Substances 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 7
- 239000004721 Polyphenylene oxide Substances 0.000 description 7
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 7
- 239000012975 dibutyltin dilaurate Substances 0.000 description 7
- 229920000570 polyether Polymers 0.000 description 7
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 7
- 239000012792 core layer Substances 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- 239000004594 Masterbatch (MB) Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000001723 curing Methods 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 229920002799 BoPET Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 239000013039 cover film Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012788 optical film Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 235000021022 fresh fruits Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 235000021404 traditional food Nutrition 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/2805—Compounds having only one group containing active hydrogen
- C08G18/288—Compounds containing at least one heteroatom other than oxygen or nitrogen
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08G18/3206—Polyhydroxy compounds aliphatic
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
- C08G18/348—Hydroxycarboxylic acids
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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- C08J7/054—Forming anti-misting or drip-proofing coatings
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
本发明提供了一种PET热封膜涂布防雾剂、PET防雾易揭膜及其制备方法和应用，防雾剂以质量分数计，包括丙烯酸接枝改性聚酯多元醇8～11％；六亚甲基二异氰酸酯2～4％；丙酮3～5％；二羟甲基丙酸3～4％；3‑烯丙氧基‑2‑羟基‑1‑丙烷磺酸钠盐1.5～3.5％；马来酸酐1.1～2.2％；异丙醇2.5～3.5％；乙二醇2.0～3.5％；引发剂0.1～1.0％；催化剂0.2～1.2％；消泡剂0.3～0.5％；棕榈蜡防粘剂1.5～2.5％；SiO2防粘剂0.5～1.0％；软水60～70％。本发明采用上述组分的防雾剂具有良好防雾效果，还能与PET盒本体具有良好热封强度，达到易揭盖效果；符合环保要求。The invention provides a PET heat-sealing film coating anti-fogging agent, a PET anti-fogging easy-release film and a preparation method and application thereof. %; hexamethylene diisocyanate 2-4%; acetone 3-5%; dimethylolpropionic acid 3-4%; 3-allyloxy-2-hydroxy-1-propanesulfonic acid sodium salt 1.5- 3.5%; maleic anhydride 1.1-2.2%; isopropanol 2.5-3.5%; ethylene glycol 2.0-3.5%; initiator 0.1-1.0%; catalyst 0.2-1.2%; defoamer 0.3-0.5%; palm wax Release agent 1.5～2.5%; SiO 2 release agent 0.5～1.0%; soft water 60～70%. The anti-fogging agent using the above-mentioned components in the present invention has good anti-fogging effect, and can also have good heat-sealing strength with the PET box body, achieves the effect of easy opening of the cover, and meets the requirements of environmental protection.
Description
Technical Field
The invention belongs to the technical field of food box packaging, and particularly relates to a PET heat-sealing film coating antifogging agent, a PET antifogging easy-to-tear film, and a preparation method and application thereof.
Background
The high-quality packing carton that uses in the current fresh food package on the market requires to have the requirement of high transparency, easily take off lid, cold and hot antifog function etc. consequently, has used the PET film heat-seal on the transparent box of PET. However, the PET optical film and the PET box are not easy to be thermally sealed and bonded, and the PET optical film and the PET box are required to have a cold and hot anti-fog function after being bonded, so that a plurality of technical obstacles are caused to the development and application of products.
The traditional food box package sealing for fresh food in China realizes sealing by film spraying or compounding on the surface of a film and then heat sealing with a PET box. However, the laminating method has the following disadvantages: 1) the film is difficult to uncover, the heat seal is too large and the film is not easy to uncover due to the thick film, generally 20-70 μm, and the uneven thickness of the film, the fluctuation of the heat seal strength is large due to the uneven thickness of the film, and the cover film is easy to tear; 2) the base material of the laminated film is paper which is relatively common, poor in transparency or completely opaque; 3) not conform to the same material requirement of environmental protection requirement because the box that is used for splendid attire fresh fruit generally all adopts the PET material. But the material for laminating the film base material is paper and the material for laminating the film is PP and the composite film is PE or CPP, which does not meet the requirement of recycling the environment-friendly unified material.
Therefore, the market urgently develops an easily-torn antifog PET cover film which can be applied to packaging of fresh packaging boxes, and the existing market demand is met.
Disclosure of Invention
In view of the above, the invention aims to provide a coating antifogging agent for a PET heat-sealing film, a PET antifogging easy-to-uncover film, a preparation method and an application thereof.
The invention provides a PET heat-sealing film coating antifogging agent which comprises the following components in parts by mass:
8-11% of acrylic acid graft modified polyester polyol; 2-4% of hexamethylene diisocyanate; 3-5% of acetone; 3-4% of dimethylolpropionic acid; 1.5-3.5% of 3-allyloxy-2-hydroxy-1-propanesulfonic acid sodium salt; 1.1-2.2% of maleic anhydride; 2.5-3.5% of isopropanol; 2.0-3.5% of ethylene glycol; 0.1-1.0% of an initiator; 0.2-1.2% of a catalyst; 0.3-0.5% of defoaming agent; 1.5-2.5% of a palm wax anti-sticking agent; SiO 220.5-1.0% of an anti-sticking agent; 60-70% of soft water.
The invention provides a PET antifogging easy-uncovering film, which comprises a BOPET single-side heat-sealing film;
and an antifogging layer compounded on the heat sealing surface of the BOPET single-sided heat sealing film;
the antifogging layer is prepared by coating the PET heat-sealing film coating antifogging agent according to the technical scheme.
In the invention, the heat-sealing layer comprises the following raw materials in percentage by mass: 25-35% of terephthalic acid; 35-45% of ethylene glycol; 20-25% of isophthalic acid; 2.5-4.5% of triethyl phosphate heat stabilizer; 2.0-3.0% of PC-64 phosphorus titanium chelate catalyst; antisticking agent SiO2 0.5～1.0％。
Preferably, the thickness of the antifogging layer is 950-1050 nm.
The invention provides a preparation method of a PET antifogging easy-uncovering film, which comprises the following steps:
unreeling the BOPET single-sided heat-sealing film, carrying out corona treatment on the heat-sealing surface of the BOPET single-sided heat-sealing film, then coating the PET heat-sealing film coating antifogging agent according to the technical scheme, drying, detecting and rolling to obtain the PET antifogging easy-to-uncover film.
In the invention, the power of the corona treatment is 5.0-10.0 KW.
In the present invention, the coating amount is 0.1 to 1.0g/m2The coating speed is 170-500m/min。
The invention provides a packing box, which comprises a PET packing box body;
the PET anti-fog easy-to-tear film is arranged on the packaging box body, and the PET anti-fog easy-to-tear film is used for sealing the packaging box body;
the PET anti-fog easy-to-tear film is the PET anti-fog easy-to-tear film or the PET anti-fog easy-to-tear film prepared by the preparation method in the technical scheme.
The invention provides a PET heat-sealing film coating antifogging agent which comprises the following components in parts by mass: 8-11% of acrylic acid graft modified polyester polyol; 2-4% of hexamethylene diisocyanate; 3-5% of acetone; 3-4% of dimethylolpropionic acid; 1.5-3.5% of 3-allyloxy-2-hydroxy-1-propanesulfonic acid sodium salt; 1.1-2.2% of maleic anhydride; 2.5-3.5% of isopropanol; 2.0-3.5% of ethylene glycol; 0.1-1.0% of an initiator; 0.2-1.2% of a catalyst; 0.3-0.5% of defoaming agent; 1.5-2.5% of a palm wax anti-sticking agent; SiO 220.5-1.0% of an anti-sticking agent; 60-70% of soft water. The antifogging agent adopting the components has a good antifogging effect, and also has good heat-sealing strength with a PET box body, so that the effect of easy uncovering is achieved; meets the requirement of environmental protection.
Drawings
FIG. 1 is a schematic structural view of the PET antifogging easy-release film of the present invention.
Detailed Description
The invention provides a PET heat-sealing film coating antifogging agent which comprises the following components in parts by mass:
8-11% of acrylic acid graft modified polyester polyol; 2-4% of hexamethylene diisocyanate; 3-5% of acetone; 3-4% of dimethylolpropionic acid; 1.5-3.5% of 3-allyloxy-2-hydroxy-1-propanesulfonic acid sodium salt; 1.1-2.2% of maleic anhydride; 2.5-3.5% of isopropanol; 2.0-3.5% of ethylene glycol; 0.1-1.0% of an initiator; 0.2-1.2% of a catalyst; 0.3-0.5% of defoaming agent; 1.5-2.5% of a palm wax anti-sticking agent; SiO 220.5-1.0% of an anti-sticking agent; 60-70% of soft water.
In the present invention, the initiator in the PET heat-seal film coating antifogging agent is preferably selected from sodium persulfate initiators; the catalyst is preferably selected from dibutyltin dilaurate catalysts; the defoaming agent is preferably selected from polyether defoaming agents;
in a specific embodiment of the invention, the coating antifogging agent for the PET heat-sealing film specifically comprises the following components:
8.5 percent of acrylic acid graft modified polyester polyol; 2.5 percent of hexamethylene diisocyanate; 3.5 percent of acetone; 3.3 percent of dimethylolpropionic acid; 1.5 percent of 3-allyloxy-2-hydroxy-1-propane sulfonic acid sodium salt; 2.0 percent of maleic anhydride; 2.5 percent of isopropanol; 2.0% of ethylene glycol; 0.5 percent of sodium persulfate initiator; 1.1% of dibutyltin dilaurate catalyst; 0.5 percent of polyether defoamer; 1.6 percent of palm wax anti-sticking agent; SiO 220.5 percent of anti-sticking agent and 70 percent of soft water;
or comprises 11 percent of acrylic acid graft modified polyester polyol; 3.6 percent of hexamethylene diisocyanate; 5% of acetone; 3.2 percent of dimethylolpropionic acid; 3.0% of 3-allyloxy-2-hydroxy-1-propanesulfonic acid sodium salt; 2.0 percent of maleic anhydride; 3.2% of isopropanol; 3.5 percent of ethylene glycol; 1.0 percent of sodium persulfate initiator; 1.0% of dibutyltin dilaurate catalyst; 0.5 percent of polyether defoamer; 2.0% of palm wax anti-sticking agent; SiO 221.0 percent of anti-sticking agent and 60 percent of soft water;
or comprises 10 percent of acrylic acid graft modified polyester polyol; 2.5 percent of hexamethylene diisocyanate; 4.4 percent of acetone; 3.5 percent of dimethylolpropionic acid; 2.5 percent of 3-allyloxy-2-hydroxy-1-propane sulfonic acid sodium salt; 2.0 percent of maleic anhydride; 3.0% of isopropanol; 3.0% of ethylene glycol; 0.5 percent of sodium persulfate initiator; 1.0% of dibutyltin dilaurate catalyst; 0.4 percent of polyether defoamer; 1.7 percent of palm wax anti-sticking agent; SiO 220.5 percent of anti-sticking agent and 65 percent of soft water.
In the invention, the cold fogging is that when water vapor meets cold air, the water vapor is condensed into fine water drops which are attached to the surface, so that the surface forms diffuse reflection and cannot normally reflect light, and the surface is atomized into an opaque state. The antifogging agent has the function of preventing the surface fogging phenomenon, and the principle is as follows: the antifogging agent is a surfactant with hydrophilic groups, can be oriented on the surface of a coating, the hydrophobic groups are inward, the hydrophilic groups are outward, so that the hydrophilic groups are easy to wet the surface, condensed fine water drops can be quickly diffused to form an extremely thin water film or large water drops, and the atomization phenomenon caused by the scattering of light by the small water drops is avoided.
The PET antifogging easy-to-tear film provided by the invention is provided with the antifogging layer coated by the PET heat-sealing film coating antifogging agent in the technical scheme, so that the heat-sealing strength of the PET antifogging easy-to-tear film and the PET packaging box body is 3.0-6.0N/15 mm, the sealing capacity of the PET film can be ensured, the easy opening during opening can be ensured, and the effect of easy-to-tear can be achieved; the PET antifogging easy-uncovering film has high transparency and good cold antifogging and hot antifogging effects.
The invention provides a PET antifogging easy-uncovering film, which comprises a PET single-side heat-sealing film;
and an antifogging layer compounded on the heat sealing surface of the PET single-side heat sealing film;
the antifogging layer is prepared by coating the PET heat-sealing film coating antifogging agent according to the technical scheme.
Referring to fig. 1, fig. 1 is a schematic structural view of a PET anti-fog easy-to-tear film provided by the invention, wherein 1 is a PET single-sided heat-seal film layer, and 2 is an anti-fog layer.
The PET antifogging easy-uncovering film provided by the invention comprises a BOPET single-side heat-sealing film; the BOPET single-sided heat-sealing film is preferably prepared by the following process:
batch mixing → drying treatment → melt extrusion → cast sheet → longitudinal stretching → transverse stretching → traction rolling → slitting.
The melt extrusion is three-layer co-extrusion and comprises an anti-sticking layer, a core layer and a heat sealing layer which are compounded in sequence;
the heat-sealing layer comprises the following raw materials in percentage by mass:
25-35% of terephthalic acid; 35-45% of ethylene glycol; 20-25% of isophthalic acid; 2.5-4.5% of triethyl phosphate heat stabilizer; 2.0-3.0% of PC-64 phosphorus titanium chelate catalyst; antisticking agent SiO20.5～1.0％。
In the invention, the anti-sticking layer is preferably prepared from the following raw materials in percentage by weight: 42-53% of bright polyester chips, 6-8% of smooth master batch and 41-50% of anti-sticking master batch.
The core layer is made of polyester chips with bright color.
The heat-sealing strength is preferably regulated and controlled by controlling the thickness of the heat-sealing layer; the thickness of the heat sealing layer is preferably 4-5 μm. According to the invention, the antifogging agent in the technical scheme is coated on the heat sealing layer consisting of the components, so that the film has antifogging and high-temperature heat sealing effects, and the problem of the PET box sealing cover manufactured in a film coating mode is solved.
The PET antifogging easy-uncovering film provided by the invention comprises an antifogging layer compounded on the heat-sealing surface of the PET single-side heat-sealing film; the antifogging layer is formed by coating, drying and curing the antifogging agent in the technical scheme. The thickness of the anti-fog layer is preferably 950-1050 nm.
The invention provides a preparation method of a PET antifogging easy-uncovering film, which comprises the following steps:
unreeling the BOPET single-sided heat-sealing film, carrying out corona treatment on the heat-sealing surface of the BOPET single-sided heat-sealing film, then coating the PET heat-sealing film coating antifogging agent according to the technical scheme, drying, detecting and rolling to obtain the PET antifogging easy-to-uncover film.
The method provided by the invention is simple and has high cost performance, and the antifogging agent is directly coated on the heat sealing surface of the BOPET single-side heat sealing film; the BOPET single-sided heat-sealing film adopted by the invention and a plurality of antifogging agents newly developed by my department have good cold and hot antifogging effects and higher cost performance.
The BOPET single-sided heat-sealing film roll is preferably unfolded under the tension of 50-120N, continuously moves forwards through a plurality of guide rollers, adopts two same stations to work alternately, and achieves the purpose of continuously unreeling and changing the roll by automatically splicing and quickly changing the film;
the film passes through the middle of the corona roller, and the corona treatment is carried out on the heat-sealing surface of the PET single-sided heat-sealing film; the power of the corona treatment is 5.0-10.0 KW; after corona treatment, a plurality of uniform and dense holes and hydroxyl and carboxyl plasma bonds are formed on the surface of the heat-sealing film, so that the adhesive force of subsequent coating is greatly improved.
The invention preferably adopts the technical proposal that the reverse roll kiss type coating roll is adoptedThe antifogging agent is coated on the heat sealing surface of the BOPET single-side heat sealing film; the coating weight of the antifogging agent is preferably 0.05-0.5 g/m2The coating speed is 170 to 500 m/min.
And drying after coating, wherein in the drying process, the film needs to be controlled under certain tension, and the principle of the tension is satisfied, namely the film is straightened and flattened, and the tension is controlled between 40N and 120N. Drying is carried out in an oven; sectional drying is adopted, the temperature and time of each section are different, the section is preferably divided into 3-5 sections, and the temperature is generally set in a descending manner; namely, the front section is generally 110-120 ℃, the rear section is generally 100-110 ℃, and the total drying time of the surface coating is as follows: 10-25 seconds. The first section is also provided with infrared heating, wherein the infrared temperature is 110-130 ℃, and the time is 2.0-5.0 seconds.
The invention adopts an online detection process, adopts the working principle of online image scanning of a camera, adopts a light source to irradiate the surface of a product when the production line is in high-speed production, simultaneously scans and collects the product image at the position irradiated by the light source in real time through the camera, processes and segments the collected image, and records a mark, wherein the camera is a CCD industrial camera, and the light source is a high-brightness LED linear light-gathering light source and is used for judging the quality and the drying condition of the product.
The invention winds the film, the winding tension and the pressure of the compression roller need to be controlled during winding, the process that the tension and the pressure of the received coiled material are reduced from small to large has an optimal attenuation rate, the process needs to be finely set according to the base material film, the coating amount, the film width, the film thickness and the like, the winding tension is 50-110N, and the compression roller pressure is 3.0 +/-2 kg.
According to the invention, after the coiled material is preferably coiled, the coiled material is cured for 45-50 hours at normal temperature in a natural environment, so that the single-side heat-sealing film and the coating layer are further crosslinked, the adhesive force of the coating layer is improved, the coiling stress of the film is released, and the like.
The invention provides a packing box, which comprises a PET packing box body;
the PET anti-fog easy-to-tear film is arranged on the packaging box body, and the PET anti-fog easy-to-tear film is used for sealing the packaging box body;
the PET anti-fog easy-to-tear film is the PET anti-fog easy-to-tear film or the PET anti-fog easy-to-tear film prepared by the preparation method in the technical scheme.
The packaging box provided by the invention has the advantages that the material of the body is PET, the base material of the packaging film is also PET, and the packaging box meets the requirement of recycling the same material according to the environmental protection requirement.
The packaging box adopts the PET antifogging easy-uncovering film, so that the cold antifogging effect can reach the effect that no water mist or water drops are condensed on the film surface, and the problem that the packaging box is fogged due to the rapid cold and hot temperature when packaged fresh vegetables and fresh foods are placed in a freezer for refrigeration is solved.
In order to further illustrate the present invention, the following examples are provided to describe in detail the coating antifogging agent for PET heat-sealing film, the PET antifogging easy-release film, and the preparation method and application thereof, but they should not be construed as limiting the scope of the present invention.
Example 1
The BOPET heat-sealing film is formed by three layers of melt coextrusion, wherein the three layers of materials are divided into an upper surface layer, a core layer and a heat-sealing layer;
the upper surface layer is also called as an anti-sticking layer and is prepared from the following raw materials in percentage by weight: 42% of bright polyester chips, 8% of smooth master batch and 50% of anti-sticking master batch;
the raw material of the core layer is a large bright polyester chip;
25% of terephthalic acid; 45% of ethylene glycol; 25% of isophthalic acid; 2.5 percent of triethyl phosphate heat stabilizer; 2.0 percent of PC-64 phosphorus titanium chelate catalyst and an anti-sticking agent SiO2Mixing at 0.5% to obtain heat-sealing mixture.
Respectively drying the anti-sticking layer material, the core layer material and the heat-seal mixture, carrying out three-layer melt co-extrusion, casting a cast sheet, longitudinally stretching, transversely stretching, drawing, rolling and slitting to obtain a BOPET single-side heat-seal film, wherein the thickness of the heat-seal layer is 5 microns;
8.5 percent of acrylic acid graft modified polyester polyol; 2.5 percent of hexamethylene diisocyanate; 3.5 percent of acetone; 3.3 percent of dimethylolpropionic acid; 1.5 percent of 3-allyloxy-2-hydroxy-1-propane sulfonic acid sodium salt; 2.0 percent of maleic anhydride; 2.5 percent of isopropanol;2.0% of ethylene glycol; 0.5 percent of sodium persulfate initiator; 1.1% of dibutyltin dilaurate catalyst; 0.5 percent of polyether defoamer; 1.6 percent of palm wax anti-sticking agent; SiO 220.5 percent of anti-sticking agent and 70 percent of soft water are mixed to obtain the antifogging agent;
unreeling the BOPET single-sided heat-sealing film under the tension of 80N, enabling the film to pass through the middle of a corona roller, carrying out corona treatment on the heat-sealing surface of the single-sided heat-sealing film, wherein the power of the corona treatment is 8KW, coating the antifogging agent on the heat-sealing surface of the BOPET single-sided heat-sealing film in a kiss mode through a reverse roller of a coating roller, and the coating weight is 0.3g/m2The coating speed is 200 m/min; drying and curing; performing online detection, namely coiling under the tension of 60N and the pressure of a compression roller of 3 Kg; and finally, curing at normal temperature for 2 days in a natural environment to obtain the PET antifogging easy-to-tear film, wherein the thickness of an antifogging layer on the PET antifogging easy-to-tear film is 0.3 mu m.
The PET antifogging easy-to-uncover film and the PET box body are subjected to heat sealing under the heat sealing condition of 150 ℃ and 0.14MPa and 1S, and the heat sealing strength is 4.0N/15 mm.
The haze and the glossiness of the PET antifogging easy-uncovering film prepared in the embodiment 1 are tested by adopting a haze meter and a glossiness meter; the haze of the PET antifog easy-uncovering film prepared in the example 1 is 2.5%, and the glossiness is 98.9 GU.
Example 2
The difference from example 1 is:
11% of acrylic acid graft modified polyester polyol; 3.6 percent of hexamethylene diisocyanate; 5% of acetone; 3.2 percent of dimethylolpropionic acid; 3.0% of 3-allyloxy-2-hydroxy-1-propanesulfonic acid sodium salt; 2.0 percent of maleic anhydride; 3.2% of isopropanol; 3.5 percent of ethylene glycol; 1.0 percent of sodium persulfate initiator; 1.0% of dibutyltin dilaurate catalyst; 0.5 percent of polyether defoamer; 2.0% of palm wax anti-sticking agent; SiO 221.0 percent of the anti-sticking agent and 60 percent of soft water are mixed to obtain the antifogging agent.
The haze and the glossiness of the PET antifogging easy-uncovering film prepared in the embodiment 2 are tested by adopting a haze meter and a glossiness meter; the haze of the PET antifog release film prepared in example 1 is 1.25%, and the glossiness is 98.9 GU.
Example 3
The difference from example 1 is:
10% of acrylic acid graft modified polyester polyol; 2.5 percent of hexamethylene diisocyanate; 4.4 percent of acetone; 3.5 percent of dimethylolpropionic acid; 2.5 percent of 3-allyloxy-2-hydroxy-1-propane sulfonic acid sodium salt; 2.0 percent of maleic anhydride; 3.0% of isopropanol; 3.0% of ethylene glycol; 0.5 percent of sodium persulfate initiator; 1.0% of dibutyltin dilaurate catalyst; 0.4 percent of polyether defoamer; 1.7 percent of palm wax anti-sticking agent; SiO 220.5 percent of anti-sticking agent and 65 percent of soft water are mixed to obtain the antifogging agent.
The haze and the glossiness of the PET antifogging easy-uncovering film prepared in the embodiment 3 are tested by adopting a haze meter and a glossiness meter; the PET antifog release film prepared in example 1 has the haze of 1.25% and the glossiness of 98.9 GU.
From the above examples, the present invention provides an antifogging agent for coating a PET heat-sealing film, which comprises the following components by mass: 8-11% of acrylic acid graft modified polyester polyol; 2-4% of hexamethylene diisocyanate; 3-5% of acetone; 3-4% of dimethylolpropionic acid; 1.5-3.5% of 3-allyloxy-2-hydroxy-1-propanesulfonic acid sodium salt; 1.1-2.2% of maleic anhydride; 2.5-3.5% of isopropanol; 2.0-3.5% of ethylene glycol; 0.1-1.0% of an initiator; 0.2-1.2% of a catalyst; 0.3-0.5% of defoaming agent; 1.5-2.5% of a palm wax anti-sticking agent; SiO 220.5-1.0% of an anti-sticking agent; 60-70% of soft water. The antifogging agent adopting the components has a good antifogging effect, and also has good heat-sealing strength with a PET box body, so that the effect of easy uncovering is achieved; meets the requirement of environmental protection.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The PET heat-sealing film coating antifogging agent comprises the following components in parts by mass:
8-11% of acrylic acid graft modified polyester polyol; hexamethylene diiso-methyl2-4% of cyanate ester; 3-5% of acetone; 3-4% of dimethylolpropionic acid; 1.5-3.5% of 3-allyloxy-2-hydroxy-1-propanesulfonic acid sodium salt; 1.1-2.2% of maleic anhydride; 2.5-3.5% of isopropanol; 2.0-3.5% of ethylene glycol; 0.1-1.0% of an initiator; 0.2-1.2% of a catalyst; 0.3-0.5% of defoaming agent; 1.5-2.5% of a palm wax anti-sticking agent; SiO 220.5-1.0% of an anti-sticking agent; 60-70% of soft water.
2. A PET antifogging easy-uncovering film comprises a BOPET single-side heat-sealing film;
and an antifogging layer compounded on the heat sealing surface of the BOPET single-sided heat sealing film;
the antifogging layer is prepared by coating the PET heat-sealing film coating antifogging agent in claim 1.
3. The PET antifog easy-release film according to claim 2, characterized in that the heat-sealing layer comprises the following raw materials in percentage by mass:
25-35% of terephthalic acid; 35-45% of ethylene glycol; 20-25% of isophthalic acid; 2.5-4.5% of triethyl phosphate heat stabilizer; 2.0-3.0% of PC-64 phosphorus titanium chelate catalyst; antisticking agent SiO20.5～1.0％。
4. The PET antifog release film according to claim 2, wherein the thickness of the antifog layer is 950-1050 nm.
5. A preparation method of a PET antifogging easy-uncovering film comprises the following steps:
unreeling the BOPET single-sided heat-sealing film, carrying out corona treatment on the heat-sealing surface of the BOPET single-sided heat-sealing film, then coating the PET heat-sealing film coating antifogging agent according to claim 1, drying, detecting and rolling to obtain the PET antifogging easy-to-uncover film.
6. The preparation method according to claim 5, wherein the power of the corona treatment is 5.0-10.0 KW.
7. The article of claim 5The method is characterized in that the coating weight is 0.05-0.5 g/m2The coating speed is 170 to 500 m/min.
8. The packaging box is characterized by comprising a PET packaging box body;
the PET anti-fog easy-to-tear film is arranged on the packaging box body, and the PET anti-fog easy-to-tear film is used for sealing the packaging box body;
the PET anti-fog easy-to-tear film is the PET anti-fog easy-to-tear film as defined in any one of claims 2 to 4 or the PET anti-fog easy-to-tear film prepared by the preparation method as defined in any one of claims 5 to 7.
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| CN202110557582.3A CN113265195A (en) | 2021-05-21 | 2021-05-21 | PET heat-sealing film coating antifogging agent, PET antifogging easy-to-uncover film and preparation method and application thereof |
| PCT/CN2021/101754 WO2022241901A1 (en) | 2021-05-21 | 2021-06-23 | Pet heat-sealing film coating anti-fogging agent, pet anti-fogging easy-release film, preparation method therefor and application thereof |
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| CN113651987A (en) * | 2021-09-17 | 2021-11-16 | 海南赛诺实业有限公司 | PET antifogging easy-to-tear film and manufacturing method thereof |
| CN113667169A (en) * | 2021-09-17 | 2021-11-19 | 海南赛诺实业有限公司 | High-liquid-resistance antifogging easy-to-tear PET (polyethylene terephthalate) coating film and manufacturing method thereof |
| CN113773619A (en) * | 2021-09-13 | 2021-12-10 | 海南赛诺实业有限公司 | Anti-fog high-barrier BOPET film and manufacturing method thereof |
| CN113788973A (en) * | 2021-09-17 | 2021-12-14 | 海南赛诺实业有限公司 | A kind of PET easy-release film and preparation method thereof |
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| CN113637205A (en) * | 2021-09-03 | 2021-11-12 | 海南赛诺实业有限公司 | An anti-fog, easy-to-remove, antibacterial and high-barrier BOPET coating film and preparation method thereof |
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| CN113788973A (en) * | 2021-09-17 | 2021-12-14 | 海南赛诺实业有限公司 | A kind of PET easy-release film and preparation method thereof |
| CN113801357A (en) * | 2021-09-17 | 2021-12-17 | 海南赛诺实业有限公司 | A kind of PP easy-release film and preparation method thereof |
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| WO2022241901A1 (en) | 2022-11-24 |
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Application publication date: 20210817 |