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Anti-fogging high-barrier BOPET film and manufacturing method thereof

A manufacturing method and high-barrier technology, applied in coatings, epoxy coatings, polyurea/polyurethane coatings, etc., can solve problems such as non-compliance with recycling requirements, large heat sealing, and difficulty in sealing and peeling films.

Active Publication Date: 2021-12-10
HAINAN SHINER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]However, there are some disadvantages in the existing lamination method. Paper substrates are more common, and their transparency is poor or even completely opaque, which is not conducive to application
In addition, the composite method is generally polypropylene (PP) film substrate casting compound CPP or polyethylene (PE) and other film layers; the disadvantages of this composite heat-sealing film include: poor transparency, and after use on PET packaging boxes, no Meet the requirements of environmental protection on the recycling of the same material

Method used

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  • Anti-fogging high-barrier BOPET film and manufacturing method thereof
  • Anti-fogging high-barrier BOPET film and manufacturing method thereof
  • Anti-fogging high-barrier BOPET film and manufacturing method thereof

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Effect test

Embodiment 1

[0084] The manufacture of the anti-fog high barrier BOPET film described in the embodiment of the present invention is completed by the following steps:

[0085] (1) Unwinding process: Under the tension of 100N, unfold the 25μm BOPET optical film roll, the film roll moves forward continuously through multiple guide rollers, and uses two identical stations to work alternately, using automatic splicing and quick change The film is continuously unwound and changed.

[0086] (2) Corona treatment process: pass the film corona electrode under the power of 8.0KW, and evenly treat the film surface with a surface tension of 50 dynes on the non-corona surface of the film.

[0087] (3) Acrylic coating process: the liquid-resistant acrylic coating is coated on the corona surface of the BOPET light film by the reverse roller kissing method of the coating roller, and the coating amount can be 2.2g / m 2 , the speed is 200m / min.

[0088] Acrylic coating mass ratio:

[0089]

[0090] (4) ...

Embodiment 2

[0107] The manufacture of the anti-fog high barrier BOPET film described in the embodiment of the present invention is completed by the following steps:

[0108] (1) Unwinding process: Under the tension of 110N, unfold the 25μm BOPET optical film roll, the film roll passes through multiple guide rollers and runs forward continuously, and uses two identical stations to work alternately, using automatic splicing and quick film change , Continuous unwinding and changing rolls.

[0109] (2) Corona treatment process: pass the film corona electrode under the power of 8.0KW, and evenly treat the film surface with a surface tension of 50 dynes on the non-corona surface of the film.

[0110] (3) Acrylic coating process: the liquid-resistant acrylic coating is coated on the corona surface of the BOPET light film by the reverse roller kissing method of the coating roller, and the coating amount can be 3.5g / m 2 , the speed is 200m / min.

[0111] Acrylic coating mass ratio:

[0112]

...

Embodiment 3

[0130] The manufacture of the anti-fog high barrier BOPET film described in the embodiment of the present invention is completed by the following steps:

[0131] (1) Unwinding process: under the tension of 100N, unfold the 25μm BOPET optical film roll, the film roll moves forward continuously through multiple guide rollers, and uses two identical stations to work alternately, using automatic splicing and quick film change , to achieve the purpose of continuous unwinding and changing rolls.

[0132] (2) Corona treatment process: The film corona electrode passes under the power of 8.0KW, and the film surface with a surface tension of 52 dynes is uniformly treated on the non-corona surface of the film.

[0133] (3) Acrylic coating process: the liquid-resistant acrylic coating is coated on the corona surface of the BOPET light film by the reverse roller kissing method of the coating roller, and the coating amount can be 3.0g / m 2 , the speed is 200m / min.

[0134] Acrylic coating ...

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Abstract

The invention relates to the technical field of packaging, and discloses an anti-fogging high-barrier BOPET film and a manufacturing method thereof. The high-barrier BOPET film comprises a PVDC coating, a polyurethane primer layer, a BOPET base material layer, a liquid-resistant acrylic acid coating and an anti-fogging agent coating which are sequentially arranged; the thickness of the BOPET base material layer is 15 to 30 [mu] m; and the thickness ratio of the liquid-resistant acrylic acid coating to the anti-fogging agent coating is (0.5-1.5) [mu] m: (0.2-0.5) [mu] m. The high-barrier BOPET film provided by the invention can achieve good heat sealing strength with a PET box, and a seal is easy to uncover; and the high-barrier BOPET film has the characteristics of good oxygen and moisture barrier property, is high in transparency and good in cold anti-fogging effect, facilitates the storage and transportation of fresh fruit and vegetable packaging products, and is recycled from the same material meeting the environmental protection requirement when being used for sealing the PET box. In addition, the manufacturing method is simple and easy to implement.

Description

technical field [0001] The application belongs to the technical field of packaging, and in particular relates to an anti-fog high-barrier BOPET film and a manufacturing method thereof. Background technique [0002] Polyethylene terephthalate (PET) plastic has good formability, optical properties and weather resistance, etc., and its film sheets can be used as packaging materials for various foods and medicines. Among them, the food packaging boxes used for fresh food are usually made of food-grade PET materials at present. The traditional packaging sealing method is to realize the covering and sealing by coating the surface of the substrate or heat sealing with the PET box after compounding. [0003] However, there are some disadvantages in the existing laminating method. First, when the film is removed, the heat seal is too large, and it is difficult to seal and remove the film; second: the paper substrate of the lamination film is more common, and its transparency is poor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08J7/04C08J7/043C08J7/048C08J7/054C09D123/08C09D175/06C09D175/08C09D127/08C09D161/20C09D163/00
CPCC08J7/042C08J7/043C08J7/054C08J7/048C08J2367/02C08J2423/08C08J2475/06C08J2475/08C08J2427/08C08J2461/20C08J2463/00Y02W30/80
Inventor 李朝辉黎坛王俊峰
Owner HAINAN SHINER IND