Plastic base material film for packaging

A technology for plastic substrates and packaging, applied in the field of plastic substrate films for packaging, can solve the problems of poor sealing performance, pollution at the sealing, poor barrier properties, etc., and achieve good heat sealing performance, good barrier properties and air tightness, heat The effect of high sealing strength

Active Publication Date: 2013-04-03
汕头市汇诚包装材料实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Single-layer polyethylene film has poor barrier properties to oxygen and other gases. When packaging fried foods and other foods, it is easy to cause contamination at the seal. General liquid packaging polyethylene film has poor sealing performance for this type of packaging and cannot meet the packaging process and requirements. The requirements for the storage period of packaging items, so it is necessary to use multi-layer polyethylene modified film or composite film with good barrier performance and inclusion sealing performance

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0012] A plastic substrate film for packaging, which is made from the following raw materials in parts by weight (kg): LDPE low-density polyethylene 15, LLDPE linear low-density polyethylene 45, mLLDPE metallocene linear polyethylene 36, SG-1 Type polyvinyl chloride 10, epoxy linseed oil 4.5, polyethylene wax powder 2.7, isopropyl distearoyloxyaluminate 1.34, diatomaceous earth 8, poly-4-methyl-1-pentene 3.4 , light calcium carbonate 6.8, zinc dialkyldithiophosphate 2.4, phthalate 1.4, smoked sheet rubber 1.8, zinc stearate 0.6, 3-aminopropyltrimethoxysilane 1.5, ferrocene 1.5. Modified tree ash 2;

[0013] The preparation method of the modified tree ashes is as follows: soak the tree ashes in 25% hydrogen peroxide for 4 hours, then roast them at 550°C for 6 hours, and grind them into 500-mesh powder, which is mixed with polysorbate equivalent to 5% of the weight of the powder 80 mixed, after stirring evenly, that is.

[0014] The preparation method of the described plastic ...

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Abstract

The invention discloses a plastic base material film for packaging. The film is prepared from the following raw materials in parts by weight: 15-18 parts of low-density polyethylene (LDPE), 40-45 parts of linear low-density polyethylene (LLDPE), 34-40 parts of metallocene linear low-density polyethylene (mLLDPE), 10-15 parts of SG-1 polyvinyl chloride, 3-5 of epoxy linseed oil, 2-3 parts of polyethylene wax powder, 1-2 parts of distearoyl isopropoxy aluminate, 8-12 parts of kieselguhr, 2-4 parts of poly-4-methyl-1-amylene, 5-10 parts of light calcium carbonate, 2-3 parts of phosphorodithioic acid, 1-2 parts of phthalate, 1-2 parts of smoke sheet rubber, 0.5-0.8 parts of zinc stearate, 1-2 parts of 3-aminopropyltrimethoxysilane, 1-2 parts of ferrocene and 1-2 parts of modified wood ashes. The plastic base material film for food packaging has good separation performance and air tightness, good anti-polluting performance, excellent pressure resistance and impact resistance as well as the characteristics of high heat-sealing strength and good heat sealing performance.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a plastic substrate film for packaging. Background technique [0002] my country is a big packaging manufacturing and consuming country in the world. The proportion of plastic packaging in the total output value of the packaging industry has exceeded 30%. It has become a new force in the packaging industry and plays an irreplaceable role in various fields of food, beverages, daily necessities, and industrial and agricultural production. In recent years, the packaging products and packaging materials in the plastic packaging industry have grown steadily, and new packaging materials, new processes, new technologies, and new products are constantly emerging. Food packaging plastic substrate films are usually produced with polyethylene raw materials. There are many polyethylene raw materials with superior performance that can be used to make food packaging plastic substrate films. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08L27/06C08L23/20C08L7/00C08K13/06C08K9/02C08K3/04C08K3/34C08K5/1515C08K3/26C08K5/12B29C47/92B65D65/46B29C48/92
CPCB29C48/08B29C48/92B29C2948/92704B29C2948/92895
Inventor 王立新
Owner 汕头市汇诚包装材料实业有限公司
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