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Composition for highly transparent polyvinyl chloride heat-shrinkable film and preparation method thereof

A polyvinyl chloride and heat shrinkable film technology, applied in the field of polymer materials, can solve the problems of many fish eyes in the heat shrinkable film, lower product quality, and yellow color of the finished heat shrinkable film, so as to improve the plasticizing effect and increase the light transmission efficiency, quality improvement

Active Publication Date: 2016-01-06
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, due to the quality of the resin itself or the product formula, the heat shrinkable film has many problems such as fish eyes, and the finished heat shrinkable film without colorant is yellow in color, which affects the light transmittance of the heat shrinkable film. reduce the quality of the product
In the prior art, to solve the problem of colorant yellowing, the method of colorant covering is often used, but this cannot solve the problem of more fish eyes and poor quality of the product

Method used

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  • Composition for highly transparent polyvinyl chloride heat-shrinkable film and preparation method thereof
  • Composition for highly transparent polyvinyl chloride heat-shrinkable film and preparation method thereof
  • Composition for highly transparent polyvinyl chloride heat-shrinkable film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Step 1. Weigh 0.5 part of acrylate (ACR), 0.1 part of paraffin wax, 0.1 part of stearic acid, and 0.1 part of polymethylphenylsiloxane into a high-speed mixer (680-1400r / min) and stir at a high speed. When the temperature rises to 100-110°C, put the mixture in the high-speed mixer into a low-speed mixer (85r / min) to stir and cool, and when the temperature drops to 40-50°C, the released material is PVC heat shrinkable film Use a transparency modifier.

[0027] Step 2. Weigh 100 parts of polyvinyl chloride resin with an average degree of polymerization of 700±50, 3.5 parts of octyltin mercaptide, 3 parts of dioctyl phthalate, and methyl-butadiene-styrene copolymer of methacrylate C-2014.0 parts, 0.5 parts of glycerin partial fatty acid ester, 0.5 part of fatty acid complex ester, and 0.8 part of transparency modifier. Put the weighed components into a high-speed mixer (680-1400r / min) and stir at a high speed. When the temperature rises to 110-120°C, put the mixture in th...

Embodiment 2

[0029] Step 1. Weigh 1.0 parts of acrylate (ACR), 0.15 parts of microcrystalline wax, 0.15 parts of oleic acid, and 0.2 parts of polymethylphenylsiloxane into a high-speed mixer (680-1400r / min) and stir at high speed. When the temperature rises to 100-110°C, put the mixture in the high-speed mixer into a low-speed mixer (85r / min) to stir and cool, and when the temperature drops to 40-50°C, the released material is polyvinyl chloride heat shrinkage Transparency modifier for films.

[0030] Step 2. Weigh 100 parts of polyvinyl chloride resin with an average degree of polymerization of 800±50, 3.0 parts of octyltin mercaptide, 4 parts of dioctyl phthalate, and methyl-butadiene-styrene copolymer of methacrylate 3.5 parts of C-201, 0.6 parts of glycerin partial fatty acid ester, 0.2 part of stearic acid amide, 0.4 part of fatty acid alcohol ester, and 1.5 parts of transparency modifier. Put the weighed components into a high-speed mixer (680-1400r / min) and stir at a high speed. Wh...

Embodiment 3

[0032] Step 1. Weigh 1.5 parts of acrylate (ACR), 0.3 parts of microcrystalline wax, 0.5 parts of stearic acid, and 0.7 parts of polymethylphenylsiloxane into a high-speed mixer (680-1400r / min) and stir at high speed , when the temperature rises to 100-110°C, put the mixture in the high-speed mixer into a low-speed mixer (85r / min) to stir and cool, and when the temperature drops to 40-50°C, the material released is polyvinyl chloride heat. Clarity modifier for shrink film.

[0033] Step 2. Weigh 100 parts of polyvinyl chloride resin with an average degree of polymerization of 1000±50, 2.5 parts of methyl tin mercaptide, 5 parts of dioctyl phthalate, methyl-butadiene-styrene methacrylate Copolymer C-2012.5 parts, glycerin partial fatty acid ester 1.0 part, stearic acid amide 0.2 part, fatty acid alcohol ester 0.4 part, transparency modifier 3.0 parts. Put the weighed components into a high-speed mixer (680-1400r / min) and stir at a high speed. When the temperature rises to 100-...

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Abstract

The invention relates to a composition for a high-transparency polyvinyl chloride heat shrinkable film and a preparation method thereof, belonging to the technical field of high polymer materials. The composition is characterized by comprising the following components in parts by weight: 100 parts of polyvinyl chloride resin, 1.5-3.5 parts of stabilizer, 3-7 parts of plasticizer, 1.0-4.0 parts of toughener, 1.0-2.0 parts of lubricant and 0.8-5.0 parts of transparent modifier. Compared with the prior art, the yellowing problem of a heat shrinkable film is solved through the use of the transparent modifier, fish eyes of the heat shrinkable film are obviously reduced, the light transmittance of the heat shrinkable film is enhanced, the plastication effect of the composition for the heat shrinkable film and the color of the heat shrinkable film are obviously improved, and the quality of the heat shrinkable film is greatly increased.

Description

technical field [0001] The invention discloses a composition for heat-shrinkable polyvinyl chloride film with high transparency and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Heat-shrinkable film is a good film packaging material. It uses the energy stored in the film when the film is stretched longitudinally and / or transversely in a high elastic state, and utilizes the shape of thermoplastics before bidirectional or unidirectional stretching. The function of memory effect and the ability to restore the shape in front of the body when it encounters heat again achieves the purpose of packaging. The heat shrinkable film should have good transparency, allowing customers to directly see the packaged goods, making it easy for customers to choose goods. Polyvinyl chloride is widely used in the production of heat shrinkable films because of its excellent transparency, easy modification and easy to meet the req...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L83/04C08K5/00C08K5/58C08K5/12C08K5/09C08K5/101
Inventor 孔秀丽王晶张新华张学明贾小波李长春苏建华王海波张强
Owner CHINA PETROLEUM & CHEM CORP
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