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 PDF

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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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pet
film
antifogging
heat
easy
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李朝辉
黎坛
王俊峰
王恩飞
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Hainan Shiner Industrial Co Ltd
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Hainan Shiner Industrial Co Ltd
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Priority to CN202110557582.3A priority Critical patent/CN113265195A/en
Priority to PCT/CN2021/101754 priority patent/WO2022241901A1/en
Publication of CN113265195A publication Critical patent/CN113265195A/en
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
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    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
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    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30Low-molecular-weight compounds
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    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30Low-molecular-weight compounds
    • C08G18/34Carboxylic acids; Esters thereof with monohydroxyl compounds
    • C08G18/348Hydroxycarboxylic acids
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    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
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    • C08G18/40High-molecular-weight compounds
    • C08G18/63Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/6505Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen the low-molecular compounds being compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6511Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen the low-molecular compounds being compounds of group C08G18/32 or polyamines of C08G18/38 compounds of group C08G18/3203
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    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
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    • C08G18/65Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04Coating
    • C08J7/0427Coating with only one layer of a composition containing a polymer binder
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    • C08J7/00Chemical treatment or coating of shaped articles made of macromolecular substances
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    • C08J7/052Forming heat-sealable coatings
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    • C08J7/00Chemical treatment or coating of shaped articles made of macromolecular substances
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
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    • C08J2367/00Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
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    • C08J2475/00Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2475/04Polyurethanes
    • C08J2475/14Polyurethanes having carbon-to-carbon unsaturated bonds
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/80Packaging reuse or recycling, e.g. of multilayer packaging

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  • Wood Science & Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)

Abstract

The invention provides a PET heat-sealing film coating antifogging agent, a PET antifogging easy-to-uncover film, a preparation method and an application thereof, wherein the antifogging agent comprises 8-11% of acrylic acid graft modified polyester polyol by mass percent; 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.

Description

PET heat-sealing film coating antifogging agent, PET antifogging easy-to-uncover film and preparation method and application thereof
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.
CN202110557582.3A 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 Pending CN113265195A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113637205A (en) * 2021-09-03 2021-11-12 海南赛诺实业有限公司 Anti-fog easy-uncovering antibacterial high-barrier BOPET coating film and preparation method thereof
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 Antifogging 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 PET easy-to-tear film and preparation method thereof
CN113801357A (en) * 2021-09-17 2021-12-17 海南赛诺实业有限公司 PP easy-to-tear film and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150346621A1 (en) * 2014-05-30 2015-12-03 Michelman, Inc. Primer coatings for use on substrates
CN105968314A (en) * 2016-07-02 2016-09-28 安徽中恩化工有限公司 Preparation method of super-hydrophilic polyurethane used as long-acting antifogging agent
CN107108921A (en) * 2014-11-27 2017-08-29 克里奥瓦克公司 sealable and peelable polyester film

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6153701A (en) * 1998-11-20 2000-11-28 International Paper Company Wettable polypropylene composition and related method of manufacture
CN106832729A (en) * 2017-03-20 2017-06-13 南平博士达节能科技有限公司 A kind of aqueous antitack agent suitable for synthetic leather

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150346621A1 (en) * 2014-05-30 2015-12-03 Michelman, Inc. Primer coatings for use on substrates
CN107108921A (en) * 2014-11-27 2017-08-29 克里奥瓦克公司 sealable and peelable polyester film
CN105968314A (en) * 2016-07-02 2016-09-28 安徽中恩化工有限公司 Preparation method of super-hydrophilic polyurethane used as long-acting antifogging agent

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113637205A (en) * 2021-09-03 2021-11-12 海南赛诺实业有限公司 Anti-fog easy-uncovering antibacterial high-barrier BOPET coating film and preparation method thereof
CN113773619A (en) * 2021-09-13 2021-12-10 海南赛诺实业有限公司 Antifogging high-barrier BOPET film and manufacturing method thereof
CN113773619B (en) * 2021-09-13 2022-12-30 海南赛诺实业有限公司 Antifogging high-barrier BOPET film and manufacturing method thereof
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
CN113788973A (en) * 2021-09-17 2021-12-14 海南赛诺实业有限公司 PET easy-to-tear film and preparation method thereof
CN113801357A (en) * 2021-09-17 2021-12-17 海南赛诺实业有限公司 PP easy-to-tear film and preparation method thereof

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