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BOPBT thin film and preparation method thereof

A film and surface layer technology, applied in the field of BOPBT film and its preparation, to achieve excellent weather resistance, cost reduction, and broad market prospects

Inactive Publication Date: 2020-01-17
ANHUI GUOFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technology of PBT fiber material products is mature and has a certain market share, but there is no precedent for the application of PBT raw materials in the preparation of biaxially stretched films.

Method used

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  • BOPBT thin film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of BOPBT film, is made of upper surface layer, core layer, lower surface layer successively; Described core layer is PBT polyester chip, and the raw material of upper surface layer and lower surface layer is all by weight percentage by 70% PBT polyester chip and 30% Composed of PBT polyester masterbatch; the thickness of the upper surface layer accounts for 10% of the total thickness of the BOPBT film, the thickness of the lower surface layer accounts for 10% of the total thickness of the BOPBT film, and the thickness of the core layer accounts for 80% of the total thickness of the BOPBT film.

[0022] The preparation method of above-mentioned BOPBT film, comprises the steps:

[0023] S1. Take the PBT polyester chips and dry them at 110-120°C for 2-3 hours, heat and melt them in a single-screw extruder, and filter to obtain the core layer melt; Vacuum, remove water and impurities to obtain the upper surface melt; remove the surface material and heat and melt it i...

Embodiment 2

[0027] A kind of BOPBT film, is made of upper surface layer, core layer, lower surface layer successively; Described core layer is PBT polyester chip, and the raw material of upper surface layer and lower surface layer is all by weight percentage by the PBT polyester chip of 73% and 27% Composed of PBT polyester masterbatch; the thickness of the upper surface layer accounts for 11% of the total thickness of the BOPBT film, the thickness of the lower surface layer accounts for 11% of the total thickness of the BOPBT film, and the thickness of the core layer accounts for 78% of the total thickness of the BOPBT film.

[0028] The preparation method of above-mentioned BOPBT film, comprises the steps:

[0029] S1. Take the PBT polyester chips and dry them at 110-120°C for 2-3 hours, heat and melt them in a single-screw extruder, and filter to obtain the core layer melt; Vacuum, remove water and impurities to obtain the upper surface melt; remove the surface material and heat and me...

Embodiment 3

[0033] A kind of BOPBT film, is made of upper surface layer, core layer, lower surface layer successively; Described core layer is the PBT polyester chip, and the raw material of upper surface layer and lower surface layer is by weight percentage all by the PBT polyester chip of 76% and 24% Composed of PBT polyester masterbatch; the thickness of the upper surface layer accounts for 12% of the total thickness of the BOPBT film, the thickness of the lower surface layer accounts for 12% of the total thickness of the BOPBT film, and the thickness of the core layer accounts for 76% of the total thickness of the BOPBT film.

[0034] The preparation method of above-mentioned BOPBT film, comprises the steps:

[0035] S1. Take the PBT polyester chips and dry them at 110-120°C for 2-3 hours, heat and melt them in a single-screw extruder, and filter to obtain the core layer melt; Vacuum, remove water and impurities to obtain the upper surface melt; remove the surface material and heat an...

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Abstract

The invention discloses a BOPBT thin film. The BOPBT thin film consists of an upper surface layer, a core layer and a lower surface layer sequentially, wherein the core layer is a PBT polyester chip,and the raw material of the upper surface layer and the raw material of the lower surface layer both comprise, by weight, 70-76% of the PBT polyester chip and 24-30% of a PBT polyester master batch. The invention further discloses a preparation method of the BOPBT thin film. According to the BOPBT thin film, the PBT polyester chip and the PBT polyester master batch are adopted for the first time,and the BOPBT thin film is produced on biaxially oriented production equipment; and compared with traditional BOPET thin films, the BOPBT thin film has better properties in terms of water resistance,oxygen resistance and the like and meanwhile has the characteristics of good biodegradation, heat resistance, electrical insulation, water absorption resistance and the like, thereby having broader application prospects.

Description

technical field [0001] The invention relates to the technical field of plastic films, in particular to a BOPBT film and a preparation method thereof. Background technique [0002] PBT (polybutylene terephthalate), also known as PBTP, PTMT, is a new type of polyester material; PBT is a milky white translucent to opaque, crystalline thermoplastic polyester, which can be processed through DMT or PTA. synthesis. The technology of PBT fiber material products is mature and has a certain market share, but there is no precedent for the application of PBT raw materials in the preparation of biaxially stretched films. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes a BOPBT film and a preparation method thereof. The present invention adopts PBT polyester chips and PBT polyester masterbatch for the first time to produce BOPBT film on biaxial stretching production equipment. Because the tradition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/08B32B37/00
CPCB32B27/08B32B27/36B32B37/00
Inventor 年陈瑞
Owner ANHUI GUOFENG PLASTIC
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