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Modified multifunctional polyester film and preparation method thereof

A technology of polyester film and modified polyester, applied in chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve problems such as difficult judgment, difficulty in customs supervision, and complexity of polyester film. Improve uniformity, good gloss and good opening

Active Publication Date: 2014-06-25
福建百宏高新材料实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complexity and difficulty of judgment of polyester film, it brings many difficulties to the supervision of customs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] A modified multifunctional polyester film, the surface layer is modified PEN polyester, the middle layer is modified polyester, and the bottom layer is modified PEN polyester.

[0071] The thickness of the middle layer accounts for 60%, the thickness of the surface layer accounts for 20%, and the thickness of the bottom layer accounts for 20%.

[0072] A modified multifunctional polyester film, comprising the following steps:

[0073] (1) The polyester raw material slices of the surface layer and the bottom layer are mixed and sent to the three-layer co-extrusion biaxial stretching equipment (that is, the three-layer co-extrusion biaxial stretching production line) with the polyester slices of the middle layer;

[0074] (2) Extrude and melt the polyester raw material slices of the surface layer, the bottom layer and the middle layer at 260-280 ° C, and the melt is cooled below 30 ° C to form PET sheets;

[0075] (3) The cast PET sheet is preheated at 80-100°C for longi...

Embodiment 2

[0083] A modified multifunctional polyester film, the surface layer is modified PEN polyester, the middle layer is modified polyester, and the bottom layer is modified PEN polyester.

[0084] The thickness of the middle layer accounts for 70%, the thickness of the surface layer accounts for 15%, and the thickness of the bottom layer accounts for 15%.

[0085] A modified multifunctional polyester film, comprising the following steps:

[0086] (1) The polyester raw material slices of the surface layer and the bottom layer are mixed and sent to the three-layer co-extrusion biaxial stretching equipment (that is, the three-layer co-extrusion biaxial stretching production line) with the polyester slices of the middle layer;

[0087] (2) Extrude and melt the polyester raw material slices of the surface layer, the bottom layer and the middle layer at 260-280 ° C, and the melt is cooled below 30 ° C to form PET sheets;

[0088] (3) The cast PET sheet is preheated at 80-100°C for longi...

Embodiment 3

[0096] A modified multifunctional polyester film, the surface layer is modified PEN polyester, the middle layer is modified polyester, and the bottom layer is modified PEN polyester.

[0097] The thickness of the middle layer accounts for 80%, the thickness of the surface layer accounts for 10%, and the thickness of the bottom layer accounts for 10%.

[0098] A modified multifunctional polyester film, comprising the following steps:

[0099] (1) The polyester raw material slices of the surface layer and the bottom layer are mixed and sent to the three-layer co-extrusion biaxial stretching equipment (that is, the three-layer co-extrusion biaxial stretching production line) with the polyester slices of the middle layer;

[0100] (2) Extrude and melt the polyester raw material slices of the surface layer, the bottom layer and the middle layer at 260-280 ° C, and the melt is cooled below 30 ° C to form PET sheets;

[0101] (3) The cast PET sheet is preheated at 80-100°C for longi...

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Abstract

The invention relates to a modified multifunctional polyester film and a preparation method thereof. The surface layer of the modified multifunctional polyester film is made from modified PEN (polyethylene naphthalate) polyester; the middle layer is made from modified polyester; the bottom layer is made from modified PEN polyester; the thickness of the middle layer accounts for 60-80%; the thickness of the surface layer accounts for 10-20%; the thickness of the bottom layer accounts for 10-20%. By using a modified nano-particle-containing material to prepare a functional auxiliary and using a production process, the structure of BOPET (Biaxially Oriented Polyester Film) polyester, the total crystallization rate of the production process and the crystallinity of the final product are changed, so that the molecular structure of the polyester is changed, the effects of good glossiness, normal haze and antistatic property are achieved and relatively good opening property is also provided.

Description

technical field [0001] The invention relates to a special packaging film manufacturing technology, which relates to a modified multifunctional polyester film and a preparation method. Background technique [0002] Polyester film (PET) is a film material made of polyethylene terephthalate as a raw material, which is made into a thick sheet by extrusion and then biaxially stretched. At the same time, it is a kind of polymer plastic film, which is more and more favored by consumers because of its excellent comprehensive performance. Since my country's current production capacity and technical level still cannot meet the market demand, some still need to rely on imports. It is a colorless, transparent and glossy film with excellent mechanical properties, high rigidity, hardness and toughness, puncture resistance, friction resistance, high and low temperature resistance, chemical resistance, oil resistance, air tightness and fragrance retention. , is one of the commonly used ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B29C69/00B29C47/06B29C55/14
Inventor 沈太英付双云
Owner 福建百宏高新材料实业有限公司
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