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Fully-biodegradable heat shrinkage film and preparation method thereof

A heat shrinkable film, biodegradable technology, applied in the field of heat shrinkable film, can solve the problems of easy damage, loss of reuse value, no biodegradability, etc., to achieve good heat sealability and air permeability, excellent physical and mechanical properties, The effect of excellent thermal shrinkage

Inactive Publication Date: 2013-02-13
山东省意可曼科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned traditional plastic materials do not have biodegradability, and because the heat-shrinkable film is a film material, it is very easy to damage during use and loses the value of reuse. If it is discarded in large quantities, it will cause serious pollution to the environment. There is an urgent need for products that can replace traditional heat-shrinkable films. Appear

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 100 parts of poly 3-hydroxybutyrate-4-hydroxybutyrate P3HB4HB, 1.5 parts of citrate, 1.0 parts of paraffin, 0.5 parts of antioxidant 2, 6-di-tert-butyl-4-methylphenol Mix in the high mixer and take it out, then granulate, water-cool and cut into strips to produce pellets for the preparation of heat shrinkable films; then add the pellets to the film blowing machine, blow out a film with a wall thickness of 100 μm, and cool Shaped, and then irradiated and cross-linked, wherein the radiation cross-linked measurement is 5 kGy; after the irradiation, the film is preheated by traction, and the preheating temperature is 150 degrees Celsius. After secondary inflation and shaping, it can be blown out of the wall The film is 8-30μm thick. After being flattened and tested to pass the test, the product is rolled up and put into storage.

Embodiment 2

[0022] Weigh 80 parts of polyhydroxybutyrate valerate PHBV, 20 parts of polylactic acid, 3 parts of citrate, 2 parts of paraffin, antioxidant 2-tert-butyl-6-(3-tert-butyl-2-hydroxyl-5 Put 1.5 parts of methyl benzyl)-4 methyl phenyl acrylate into a high-mixer and mix evenly and take it out, then granulate, water-cooled and cut into strips to produce pellets for preparing heat shrinkable films; then the pellets Add it to a film blowing machine, blow out a film with a wall thickness of 100 μm, and then cool and shape it, draw it, flatten it, and wind it up; then the extruded film material is irradiated and cross-linked, and the irradiated cross-linking measurement is 10 kG Rui: After the irradiation, the membrane material is pulled and preheated, and its temperature is 170 degrees Celsius. After the second blowing and shaping, the product is rolled up and put into storage after passing the test.

Embodiment 3

[0024] Weigh 70 parts of poly-3-hydroxybutyrate-co-3-hydroxyhexanoate PHBH, 30 parts of polycaprolactone, 5 parts of citrate, 1.0 parts of paraffin, antioxidant 2,6-di-tert-butyl - 2 parts of 4-methylphenol were put into the high mixer and mixed evenly, then granulated, water-cooled and cut into strips to produce pellets for the preparation of heat shrinkable films; then the pellets were added to the casting machine, The wall thickness of the extruded sheet is 200 μm, which is cooled and shaped, and put on the plate; then the extruded sheet is irradiated and cross-linked, and the radiation cross-linked measurement is 12 kGy; after the irradiation, the sheet is pulled Preheating, the temperature is 120 degrees Celsius, after longitudinal stretching, transverse stretching, cooling and setting, after passing the test, the product is rolled up and put into storage.

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Abstract

The invention discloses a fully-biodegradable heat shrinkage film. A substrate resin material is any one or a mixed material of polyhydroxyalkanoate, poly-butylenes succinate, polylactic acid, polycaprolactone, polyesteramide and polypropylene carbonate. The heat shrinkage film is prepared from a fully-biodegradable material, has superior physical and mechanical properties, can be used for replacing the conventional heat shrinkage film, can be biodegraded fully after being discarded, and is environment-friendly.

Description

technical field [0001] The invention relates to a heat-shrinkable film, in particular to a fully biodegradable heat-shrinkable film and a preparation method thereof. Background technique [0002] Heat shrinkable film is mainly used for product packaging during product sales and transportation. Heat shrinkable film has good puncture resistance and shrinkage stress, and its main function is to better stabilize and protect products. [0003] Compared with other packaging processes, heat shrinkable film packaging has the following main features: beautiful appearance, close to the product, suitable for packaging of various shapes of products; good moisture and water resistance; good transparency; good protection; good cleaning performance, especially suitable for Packaging of precision instruments and high-precision electronic components; multiple items can be packed together with a large shrink film, which is economical and can avoid loss; good stability, the goods will not wobb...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L67/02C08L77/12C08L69/00C08J3/28C08J3/24
Inventor 钟路华蓝小平孙西明
Owner 山东省意可曼科技有限公司
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