Preparation method of package-purposed plastic-based film containing modified calcined fluorite powder

A technology for plastic substrates and packaging, applied in the field of preparation of plastic substrate films for packaging, can solve the problems of pollution at the seal, poor barrier performance, and poor sealing performance, and achieve good heat-sealing performance, high heat-sealing strength, and barrier Good effect of sex and airtightness

Active Publication Date: 2013-04-17
平湖市泓博科技有限公司
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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 pac

Method used

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Embodiment Construction

[0013] A method for preparing a plastic substrate film for packaging containing modified calcined fluorite powder, comprising the following steps:

[0014] (1) Calcinate fluorite at 800°C for 6 hours, grind it into powder, soak it in 15% hydrogen peroxide solution for 6 hours, dry it, mix it with chlorinated paraffin equivalent to 2% of the weight of fluorite powder, and grind it into powder and pass through a 200-mesh sieve to obtain modified calcined fluorite powder for subsequent use;

[0015] (2) Soak the sepiolite in 12% hydrochloric acid solution for 8 hours, dry it, then calcinate it at 600°C for 5 hours, grind it into powder, and mix it with epoxidized soybean oil equivalent to 2% of the powder weight , after stirring evenly, pulverize and pass through a 400-mesh sieve to obtain modified sepiolite powder for subsequent use;

[0016] (3) Add epoxy linseed oil and oxidized polyethylene wax powder to the mixer, heat up to 85°C, add SG-1 type polyvinyl chloride and ...

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Abstract

The invention discloses a preparation method of a package-purposed plastic-based film containing modified calcined fluorite powder. The package-purposed plastic-based film is prepared from the following raw materials in parts by weight:10-15 parts of SG-1 type polyvinyl chloride, 3-5 parts of epoxidized linseed oil, 2-3 parts of oxidized polyethlene wax powder, 1-2 parts of distearoyl isopropoxy aluminate, 8-12 parts of kieselguhr, 35-40 parts of mLLDPE (metallocene Linear Low-Density Polyethylene), 38-42 parts of ethylene/alpha olefin copolymer, 8-12 parts of LDPE, 1-2 parts of polyisobutene, 1.2-2.5 parts of poly-4-methyl-1-amylene, 0.8-1.6 parts of nano potassium feldspar powder, 4-6 parts of modified calcined fluorite powder, 1-2 parts of crosslinking agent TAIC (triallyl isocyanurate), 1.5-3 parts of dibutyl maleate, 0.5-1 part of dioctyl maleate, 0.8-1.6 parts of calcium stearate and 1-2 parts of modified sepiolite powder. The package-purposed plastic-based film has good barrier property, gas tightness, pressure resistance and impact resistance and has the characteristics of high heat seal strength and good heat seal property.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a method for preparing a packaging plastic substrate film containing modified calcined fluorite powder. 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 t...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L27/06C08L23/30C08L23/06C08L23/22C08L23/20C08K13/06C08K9/04C08K9/02C08K3/34C08K5/1515B29C47/92B65D65/38B29C48/92
CPCB29C48/0022B29C48/0017B29C48/10B29C48/92B29C2948/92704B29C2948/92904
Inventor 王立新
Owner 平湖市泓博科技有限公司
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