Biaxially-oriented polyester film and preparation method thereof

A biaxially stretched polyester and film technology, applied in chemical instruments and methods, other household appliances, household components, etc., can solve the problems of antistatic effect decline, large film haze, environmental pollution, etc., and achieve long-lasting antistatic effect , reduce haze, improve the effect of optical performance

Inactive Publication Date: 2018-12-18
ANHUI GUOFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main production method of domestic PET antistatic film is the coating type, that is, coating the antistatic liquid on the surface of the film. This method has problems such as environmental pollution and rapid decline in antistatic effect; there are also a few manufacturers that produce by internal mixing. PET antistatic film, but due to raw material formula and production process problems, the film haze is relatively large

Method used

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  • Biaxially-oriented polyester film and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0032] A BOPET film with a thickness of 15 μm is composed of an upper surface layer, a core layer and a lower surface layer, wherein the thicknesses of the upper surface layer and the lower surface layer are respectively 12% of the total thickness of the BOPET film.

[0033] The core layer is composed of 100wt% polyester chips;

[0034] The upper surface layer is an anti-adhesive layer, and the anti-adhesive layer is composed of 40wt% polyester chips and 60wt% glass microbead anti-adhesive masterbatch, wherein the glass microbead anti-adhesive masterbatch is made of a particle size of 2.0 μm, Consists of glass microspheres and polyester chips with a content of 3000ppm.

[0035] The lower surface layer is an antistatic layer, and the antisticking layer is made of 85wt% polyester chips and 15wt% antistatic masterbatch, wherein the antistatic masterbatch is made of nonionic ethoxylated alkylamine, anionic alkane Sodium sulfonate and polyester chips are blended, extruded and drie...

Embodiment 2

[0043] A kind of BOPET film, its thickness is 12 μm, is made of upper surface layer, core layer and lower surface layer, wherein the thickness of upper surface layer and lower surface layer is respectively 15% of the total thickness of described biaxially stretched polyester film.

[0044] The core layer is composed of 100wt% polyester chips;

[0045] The upper surface layer is an anti-adhesive layer, and the anti-adhesive layer is composed of 45wt% polyester chips and 55wt% glass microbead anti-adhesive masterbatch, wherein the glass microbead anti-adhesive masterbatch is made of a particle size of 2.2 μm, Consists of glass microspheres and polyester chips with a content of 3000ppm.

[0046] The lower surface layer is an antistatic layer, and the antisticking layer is made of 90wt% polyester chips and 10wt% antistatic masterbatch, wherein the antistatic masterbatch is made of nonionic ethoxylated alkylamine, anionic alkyl Sodium sulfonate and polyester chips are blended, ext...

Embodiment 3

[0054]A kind of BOPET film, its thickness is 20 μm, is made of upper surface layer, core layer and lower surface layer, wherein the thickness of upper surface layer and lower surface layer is respectively 13% of the total thickness of described biaxially stretched polyester film.

[0055] The core layer is composed of 100wt% polyester chips;

[0056] The upper surface layer is an anti-adhesive layer, and the anti-adhesive layer is composed of 50wt% polyester chips and 50wt% glass microbead anti-adhesive masterbatch, wherein the glass microbead anti-adhesive masterbatch is made of a particle size of 2.5 μm, Consists of glass microspheres and polyester chips with a content of 3000ppm.

[0057] The lower surface layer is an antistatic layer, and the antisticking layer is 95wt% polyester chips and 5wt% antistatic masterbatch, wherein the antistatic masterbatch is made of nonionic ethoxylated alkylamine, anionic alkyl Sodium sulfonate and polyester chips are blended, extruded and ...

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Abstract

The invention discloses a biaxially-oriented polyester film, which is composed of an upper surface layer, a core layer and a lower surface layer, wherein the middle core layer is composed of polyesterchips; the upper surface layer is an anti-stick layer, and is composed of a glass microbead anti-stick masterbatch and the polyester chips; the lower surface layer is an antistatic layer composed ofan antistatic masterbatch and the polyester chips. The biaxially-oriented polyester film adopts single-sided antistatic treatment, compared with a conventional film coated with a surface antistatic layer, the biaxially-oriented polyester film is less affected by environmental humidity and has a long antistatic effect; in addition, the small particle size glass microbead anti-stick masterbatch is used to reduce the haze of the film and improve the optical properties of the film under the condition of ensuring the normal winding of the film.

Description

technical field [0001] The invention relates to the field of films, in particular to a biaxially stretched polyester film and a preparation method thereof. Background technique [0002] Biaxially oriented polyester film (BOPET film) has the characteristics of high strength, good rigidity, transparency, and high gloss, and is odorless, tasteless, colorless, and non-toxic; it has excellent wear resistance, folding resistance, and needle resistance. properties such as porosity and tear resistance. BOPET film is widely used in the packaging field because of its good performance. However, due to the high static electricity on the film surface, it is not suitable for use in some specific packaging fields. [0003] At present, the main production method of domestic PET antistatic film is the coating type, that is, coating the antistatic liquid on the surface of the film. This method has problems such as environmental pollution and rapid decline in antistatic effect; there are als...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/18B32B27/06B32B33/00B29C47/06
CPCB32B27/08B32B27/18B32B27/36B32B33/00B32B2264/101B32B2307/21B32B2307/412B32B2553/00
Inventor 张少伟王红兵张涛谢城城王恒煜
Owner ANHUI GUOFENG PLASTIC
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