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

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...

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