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Sub-smooth type polyester film at least in single side and fabricating method

A polyester film and film technology, applied in the fields of polyester film, three-layer co-extruded biaxially oriented polyester film with at least one side matt and its production, biaxially oriented polyester film and its manufacturing process, can Solve the problem of low matt surface and other problems, and achieve the effect of good processing performance, good machinability, and good winding and slitting performance.

Inactive Publication Date: 2005-08-31
SHANGHAI ZIDONG FILM MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the matte surface mentioned in the patent has a relatively small matte degree (about 50 gloss), thus limiting its application in many fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 Preparation of polyester raw materials

[0031] Silicas of different particle sizes are mixed in ethylene glycol respectively to prepare a ethylene glycol suspension of silica, and polyester chips are produced according to the conventional polymer synthesis method-direct polymerization method (PTA method). Carry out esterification reaction, then carry out polycondensation reaction, add ethylene glycol suspension containing silica and polycondensation catalyst and stabilizer in prior art before polycondensation, at 280°C, vacuum degree 10-66.7Pa, stirring speed 40rpm , the reaction time is between 2-3 hours, and the mother slices are obtained. mother slice M 1 (IV=0.64) contains Fuji silicon S350 (particle size is 3.8μm) 3000ppm, mother chip M 2 (IV=0.65) contains Fuji Silicon S350 (particle size is 3.8μm) 2000ppm, Degussa OX-50 (particle size is 40nm) 1000ppm, mother chip M 3 (IV=0.64) contains 10,000 ppm of Fuji Silicon S430 (4.2 μm in particle size) and 4...

Embodiment 2

[0034] Performance test of biaxially oriented polyester film under different raw materials and parameters, its thin film and comparative example

[0035] Comparison of film structure and film properties

[0036] In this example, a large amount of experimental data and experimental results are described, various parameters of the biaxially oriented polyester film of the present invention are changed one by one, and the resulting film properties are listed to prove the production of the biaxially oriented polyester film of the present invention. The optimal parameters required to stretch the polyester film, and also understand the differences in structure and performance between the biaxially oriented polyester film of the present invention and the films of the comparative examples. E1-E12 described below are experimental tests of changing different raw materials and parameters for the three-layer co-extruded polyester film of the present invention; C1 described below is an expe...

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Abstract

A bidirectionally stretched polyester film has at least three extruded layers. At least one surface layer is dull. Its preparing process is also disclosed. Its advantage is adjustable low lustre.

Description

technical field [0001] The invention belongs to the field of packaging industry, and relates to a polyester film, further, a biaxially oriented polyester film and a manufacturing process thereof. Specifically, the invention relates to a low-gloss, at least one-sided matt Three-layer co-extruded biaxially oriented polyester film and production method thereof. Background technique [0002] The packaging industry has always had a great demand for high-transparency, high-gloss biaxially oriented polyester films, which can make packaging surfaces more glossy and attractive. Correspondingly, the matt film with low gloss and high light transmittance can make the packaging surface more hazy and artistic, and stimulate consumers' desire to buy the packaging products. The application in the packaging industry is also increasing year by year. [0003] In order to make the film produce unique optical properties of low gloss and high transmittance, those skilled in the art have done a l...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/36
Inventor 徐志强唐延寿戴炼吴建平张春晓辛国
Owner SHANGHAI ZIDONG FILM MATERIAL CO LTD
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