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Thermal shrinked thin-membrane with polyvinyl chloride and production thereof

A heat-shrinkable film and polyvinyl chloride technology, applied in the field of polyvinyl chloride resin film, can solve problems such as difficulty in ensuring the production of film products

Inactive Publication Date: 2006-08-16
FSPG HI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biaxial stretching film forming method proposed by this method is difficult to guarantee the production of film products with required properties for different resin raw materials and different raw material compositions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022]A. Evenly mix the following raw materials by weight, cool and discharge, the raw materials include 100 parts of PVC resin with a polymerization degree of more than 700, 2 parts of internal lubricant, 3 parts of heat stabilizer, 7.8 parts of toughening agent, and 2 parts of flux Parts, 13 parts of plasticizer, 0.2 parts of external lubricant. In the same high-speed stirred tank space, the mixing is carried out by increasing the temperature step by step from time to time and feeding step by step: the feeding temperature of the first stage is controlled at 60°C, and the feeding temperature of the last stage is controlled at 90°C; the feeding temperature of the first stage and the last stage In the temperature rising range of the feeding temperature, the feeding and mixing are carried out in the following order: first add PVC resin and heat stabilizer at the same time, add plasticizer and toughener at the same time or later, and finally add flux, internal lubricant, external ...

Embodiment 2

[0028] A. Evenly mix the following raw materials by weight, cool and discharge, the raw materials include 100 parts of PVC resin with a polymerization degree of more than 700, 3 parts of internal lubricant, 2.5 parts of heat stabilizer, 6 parts of toughening agent, and 1.5 parts of flux parts, plasticizer 10 parts, external lubricant 0.9 parts. In the same high-speed stirred tank space, the method of increasing temperature step by step from time to time and feeding step by step is used for mixing: the feeding temperature of the first stage is controlled at 50°C, and the temperature of the last stage is controlled at 100°C; In the temperature rising range of the feeding temperature, the feeding and mixing are carried out in the following order: first add PVC resin and heat stabilizer at the same time, add plasticizer and toughener at the same time or later, and finally add flux, internal lubricant, external Lubricant; the temperature of the cooling discharge process is controll...

Embodiment 3

[0033] A. Evenly mix the following raw materials by weight, cool and discharge, the raw materials include 100 parts of PVC resin with a polymerization degree of more than 700, 4 parts of internal lubricant, 4 parts of heat stabilizer, 7 parts of toughening agent, and 2.5 parts of flux Parts, 8 parts of plasticizer, 0.4 parts of external lubricant. In the same high-speed stirred tank space, the method of increasing the temperature step by step from time to time and feeding step by step is used for mixing: the feeding temperature of the first stage is controlled at 75°C, and the feeding temperature of the last stage is controlled at 110°C; the feeding temperature of the first stage and the last stage In the temperature rising range of the feeding temperature, the feeding and mixing are carried out in the following order: first add PVC resin and heat stabilizer at the same time, add plasticizer and toughener at the same time or later, and finally add flux, internal lubricant, exte...

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Abstract

A thermoshrinking PVC film with high uniformity and quality is prepared through mixing PVC resin, assistant and modifier, stirring, cooling, extruding, calendering or doctor blading to obtain thick sheet, cooling, pre-heating to 50-100 deg.C, monodirectional or bidirectional drawing by 2-5 times, and cooling for fixating its shape.

Description

【Technical field】 [0001] The invention relates to a polyvinyl chloride resin film, more specifically, the invention relates to a polyvinyl chloride heat-shrinkable film and a manufacturing method thereof. 【Background technique】 [0002] In the practice of industrial production, for many products or product packaging, in order to display the name of the product, instructions for use and other information on its appearance or for decoration and advertising effects, heat shrinkable films (labels) with printed patterns are usually pasted Attached to the outer surface of products or packaging containers; especially for complex-shaped products or product packaging, heat-shrinkable films can be attached to complex-shaped products or product packaging because of their good heat-shrinking properties that other films do not have The appearance of the product or product packaging can be better protected; and the transparency, gloss and firmness of the heat shrinkable film are also very...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C55/02C08L27/06C08J5/18
Inventor 郑少华张伟王斌高东波范毅沈勇
Owner FSPG HI TECH
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