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Polyester thin film manufacturing method

A technology of polyester film and manufacturing method, which is applied in the field of plastic film manufacturing, can solve problems such as insufficient flatness, easy scratches on the surface, weak adhesion, etc., and achieve the effect of enhancing surface adhesion and improving product quality

Inactive Publication Date: 2017-06-27
中山市泓溢薄膜科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The film produced by ordinary polyester film manufacturing method is prone to have more concave and convex points, insufficient flatness, and easy to scratch the surface. Most films are produced by single-sided corona, resulting in weak adhesion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of manufacture method of polyester film is characterized in that, comprises the following steps:

[0036] Step 1: batching, adding polyester chip, color masterbatch and matt masterbatch into the mixer and stirring and mixing, the weight ratio of polyester chip, color masterbatch and matt masterbatch is 60%, 30% and 10% respectively;

[0037] Step 2: drying, drying the stirred and mixed polyester chips, color masterbatch and matting masterbatch, the drying temperature is 140°C, and the baking time is 100 minutes;

[0038] Step 3: Extrude and cast, convey the dried material to the extruder, and extrude the material in the form of melt to the quenching roll to cool to form a cast sheet. The temperature of the extruded molten fluid is 280°C, and the temperature of the quenching roll At 15°C, the material of the molten fluid is filtered through a filter before being extruded to the quenching roller. After filtering the impurities, it can prevent sand and other sundrie...

Embodiment 2

[0043] A kind of manufacture method of polyester film is characterized in that, comprises the following steps:

[0044] Step 1: batching, adding polyester chip, color masterbatch and matt masterbatch into the mixer and stirring and mixing, the weight ratio of polyester chip, color masterbatch and matte masterbatch is 55%, 30% and 15% respectively;

[0045] Step 2: drying, drying the stirred and mixed polyester chips, color masterbatch and matting masterbatch, the drying temperature is 160°C, and the baking time is 80 minutes;

[0046] Step 3: Extrude and cast, convey the dried material to the extruder, and extrude the material in the form of melt to the quenching roll to cool to form a cast sheet. The temperature of the extruded molten fluid is 292°C, and the temperature of the quenching roll is At 10°C, the material of the molten fluid is extruded to the quenching roller and filtered through a filter for impurities, which can prevent sand and other impurities from being mixed...

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Abstract

The invention discloses a polyester thin film manufacturing method. According to the polyester thin film manufacturing method, drying treatment is performed after the blending of raw materials, thereby lowering the possibility that the raw materials are degraded due to the presence of water when being machined, and improving the product quality; the temperature of an extruded molten fluid is set to 265-295 DEG C and the temperature of a quenching roller is set to 10-20 DEG C, thereby ensuring the uniform shape of a casting piece which is formed by adopting the raw materials, and providing a foundation for the stretching step; hot setting is performed after the stretching, and then cooling is performed, thereby reducing the internal stress generated during the stretching and then obtaining a high-quality polyester thin film; and double-sided corona treatment is performed after the polyester thin film is stretched, thereby enhancing the surface adhesive ability of the polyester thin film.

Description

technical field [0001] The invention relates to the field of plastic film manufacturing, in particular to a method for manufacturing a polyester film. Background technique [0002] The films produced by ordinary polyester film manufacturing methods tend to have more concave and convex points, insufficient flatness, and easy scratches on the surface. Most films are produced by single-sided corona, resulting in weak adhesion. Contents of the invention [0003] In order to solve the above problems, the object of the present invention is to provide a method for producing a polyester film with simple production steps and good film adhesion. [0004] The technical scheme that the present invention adopts for solving its technical problem is: [0005] A kind of manufacture method of polyester film, comprises the following steps: [0006] Step 1: Ingredients, adding polyester chips, color masterbatch and matting masterbatch into the mixer and stirring; [0007] Step 2: drying, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C55/14B29C71/00B29B13/06B29C47/92B29C69/02B29K67/00B29L7/00B29C48/92
CPCB29C55/143B29B13/06B29C48/92B29C69/02B29C71/0081B29C2948/92704B29K2067/00B29L2007/00
Inventor 李震宇
Owner 中山市泓溢薄膜科技有限公司
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