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High-strength environment-friendly PVC shrink film and preparation process thereof

A shrink film, high-strength technology, applied in the field of high-strength environmentally friendly PVC shrink film and its preparation, can solve the problems of poor quality of plastic products, affecting processing and performance, poor thermal stability, etc., to improve processing performance and reduce material thickness. , good compatibility

Inactive Publication Date: 2019-06-28
厦门市瀚邦包装制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing PVC heat-shrinkable film is made of ethylene-based PVC resin mixed with more than a dozen kinds of auxiliary materials and then inflated twice. Such as propylene chloride, tertiary chlorine, tertiary hydrogen, end groups with double bonds or peroxide residues, etc.) Initiated autocatalytic dehydrochlorination reaction to form conjugated polyene chains, and then undergo reactions such as chain breaking and crosslinking Discoloration and degradation lead to poor quality and performance of plastic products, which affect their processing and performance.

Method used

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  • High-strength environment-friendly PVC shrink film and preparation process thereof
  • High-strength environment-friendly PVC shrink film and preparation process thereof

Examples

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preparation example Construction

[0037] A preparation process of high-strength environment-friendly PVC shrink film, comprising the steps of:

[0038] S1: After mixing polyvinyl chloride, ethylaniline, dioctyl ester and external lubricant, introduce it into a hot pot and heat it in a high-speed mixer at a speed of 1200-1800r / min;

[0039] S2: When the temperature reaches about 85°C, add plasticizer, heat stabilizer, internal lubricant and processing aid to the high-speed mixer, and fully mix for 1 minute;

[0040] S3: Add the MBS resin to the high-speed mixer, and rapidly increase the mixing temperature to 130°C; mix the mixer at high speed for 6-8 minutes; obtain the mixture;

[0041] S4: The mixture blended in step S3 is in a molten state; extruded from an extruder with an aspect ratio of 30, blown by hot water for the first time, and then cooled and shaped by ice water to obtain a thick film;

[0042] S5: The thick film in step S4 is subjected to 80°C hot water for the second lateral inflation; cooled and...

Embodiment 1

[0048] A preparation process of high-strength environment-friendly PVC shrink film, comprising the steps of:

[0049] S1: Mix 97 parts of polyvinyl chloride, 8 parts of ethylaniline, 13 parts of dioctyl ester and 1 part of external lubricant, then introduce them into a hot pot and heat them in a high-speed mixer at a speed of 1400r / min;

[0050] S2: When the temperature reaches about 85°C, add 3 parts of plasticizer, 2 parts of heat stabilizer, 1 part of internal lubricant and 3 parts of processing aid into the high-speed mixer, and fully mix for 1 minute;

[0051] S3: Add 16 parts of MBS resin into the high-speed mixer, rapidly increase the mixing temperature to 130°C; mix the mixer at high speed for 8 minutes; obtain the mixture;

[0052] S4: The mixture blended in step S3 is in a molten state; extruded from an extruder with an aspect ratio of 30, blown by hot water for the first time, and then cooled and shaped by ice water to obtain a thick film;

[0053] S5: The thick fi...

Embodiment 2

[0056] A preparation process of high-strength environment-friendly PVC shrink film, comprising the steps of:

[0057] S1: Mix 99 parts of polyvinyl chloride, 9 parts of ethylaniline, 14 parts of dioctyl ester and 2 parts of external lubricant, then introduce them into a hot pot and heat them in a high-speed mixer at a speed of 1800r / min;

[0058] S2: When the temperature reaches about 85°C, add 3 parts of plasticizer, 3 parts of heat stabilizer, 2 parts of internal lubricant and 4 parts of working aid into the high-speed mixer, and fully mix for 1 minute;

[0059] S3: Add 18 parts of MBS resin into the high-speed mixer, rapidly increase the mixing temperature to 130°C; mix the mixer at high speed for 7 minutes; obtain the mixture;

[0060] S4: The mixture blended in step S3 is in a molten state; extruded from an extruder with an aspect ratio of 30, blown by hot water for the first time, and then cooled and shaped by ice water to obtain a thick film;

[0061] S5: The thick fil...

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Abstract

The invention discloses a high-strength environment-friendly PVC shrink film and a preparation process thereof. The PVC shrink film is prepared from the following raw materials in parts by weight: 88-100 parts of polyvinyl chloride, 6-10 parts of ethylaniline, 10-15 parts of dioctyl phthalate, 5-10 parts of MBS resin, 1-3 parts of a plasticizer, 2-4 parts of a heat stabilizer, 1-3 parts of an internal lubricant, 1-2 parts of an external lubricant and 3-5 parts of a processing aid. The PVC raw material is modified by virtue of an anti-impact enhancer, the plasticizer, the heat stabilizer, the internal lubricant, the external lubricant and the like through a polymer blending modification technique, and after being mechanically mixed with PVC, a modifier is well dispersed in a PVC matrix, sothat the heat stability of PVC is improved, the processing performance is improved, and meanwhile, the tenacity and impact resistance of PVC can be substantially improved.

Description

technical field [0001] The invention relates to the technical field of PVC shrink film production, in particular to a high-strength environment-friendly PVC shrink film and a preparation process thereof. Background technique [0002] PET bottles have the advantages of good transparency, stable chemical properties, good barrier properties, light weight, low price, and recyclability, and are preferred as bottled beverage packaging. PVC heat-shrinkable label film, also known as PVC heat-shrinkable printing film, is a kind of plastic label film with good shrinkage, transparency and printability. The gloss and shrinkage of the heat-shrinkable label film can make the packaging pattern on the bottled beverage more vivid, realize the 360° label design, and highlight the image on the supermarket shelf. , high-end alcohol products and other main forms of PET bottle trademarks. [0003] The main function of heat-shrinkable labels is product promotion, using visual impact effects to a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L51/04C08K5/18C08K5/57C08K5/101C08J5/18
Inventor 许良辉
Owner 厦门市瀚邦包装制品有限公司
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