Polyester film with low percent thermal shrinkage and production method thereof

A technology of polyester film and thermal shrinkage rate, which is applied in the field of polyester film with low thermal shrinkage rate and its production field, and can solve the problems of not providing the thermal shrinkage rate of the film

Inactive Publication Date: 2005-01-19
SHANGHAI ZIDONG FILM MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Introduced the method of thermal relaxation in the longitudinal stretching, transverse stretching and heat setting stages respectively to reduce the thermal shrinkage rate and improve the dimensional stability of the film, but did not provide the situation of the thermal shrinkage rate of the film at a higher temperature

Method used

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  • Polyester film with low percent thermal shrinkage and production method thereof
  • Polyester film with low percent thermal shrinkage and production method thereof

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Embodiment Construction

[0032] The present invention will be further elaborated below through specific embodiments.

[0033] 1. Preparation of polyester raw materials:

[0034] Mix two kinds of silicon dioxide with different particle sizes (see the following conditions for the specific size) in ethylene glycol to prepare a silicon dioxide suspension in ethylene glycol, and produce polyester according to the conventional polymer synthesis method (PTA method) Slice, first carry out esterification reaction, then carry out polycondensation reaction, add the ethylene glycol suspension of silicon dioxide and the polycondensation catalyst in the prior art, stabilizer before polycondensation, at 280 ℃, vacuum degree 10-66.7Pa, stir The speed is 40rpm, the reaction time is between 2-3 hours, and the mother slice is made, the mother slice M 1 Contains Fuji silicon S350 (spherical, FUJI SIL YSIA CHEMICALLTD.JAPAN) (particle size 1.8μm) 3000ppm, mother chip M 2 Contains Fuji Silicon S350 (particle size: 1.8μm)...

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Abstract

The invention discloses a mylar with low heat shrinkage rate containing at least one layer structured multilayer extrusion structure, it has low heat shrinkage rate especially low cross heat shrinkage rate, and high transparency, low fog, excellent friction performance, and excellent processing performance and dimension stability. The invention also discloses the mylar production method.

Description

technical field [0001] The invention relates to a biaxially stretched polyester film and a production method thereof, in particular to a film containing at least one layer with high transparency, low haze, good friction performance, flat winding, stable size, and low heat shrinkage. Biaxially stretched polyester film and its production method. Background technique [0002] Biaxially oriented polyester film with low heat shrinkage and excellent dimensional stability is often used in hot stamping foil processes with high processing temperature and complex conditions. [0003] Hot stamping foil is used to transfer hot stamping metal color to various materials, such as plastic products, leather, wood products, paper, to make these materials have an attractive appearance and increase their commercial value. [0004] figure 1 It is a schematic diagram of the basic structure of hot stamping foil and its transfer printing. From figure 1 It can be known that bronzing foil contain...

Claims

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Application Information

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IPC IPC(8): B29D7/01
Inventor 唐延寿辛国柯沁吴建平吴斌戴炼
Owner SHANGHAI ZIDONG FILM MATERIAL CO LTD
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