Double-layer composite aluminum film gas release type preparation process

Abstract

The invention discloses a double-layer composite aluminum film gas release type preparation process, and belongs to the field of aluminum films. According to the double-layer composite aluminum film gas release type preparation process, through the arrangement of a two-way air cylinder, before a double-layer film is extruded, on one hand, gas is blown into the double-layer film, a gas release layer can be formed in the double-layer film, blowing force is generated on the overlapped double-layer films to force the double-layer films to be separated when the double-layer films are close to the blowing cylinder, so that the bulging part containing bubbles is integrated with other parts, the condition of individual bubble bulging is effectively reduced, then the double-layer films are integrated again in cooperation with air suction operation, the bubble amount in the double-layer films is remarkably reduced, the situation of being scraped because of bulging can be effectively avoided, and the quality of the finished products is significantly improved in comparison with the prior art. On one hand, the air blowing cylinder is bulged during air inflation, so that the fluff layer above the air blowing cylinder is in frictional contact with the upper-layer film to generate static electricity, the stability of the double-layer film which is overlapped again is effectively improved, and the quality of the composite aluminum film finished product is further improved.

Description

technical field [0001] The invention relates to the field of aluminum films, and more specifically, relates to a double-layer composite aluminum film air-release preparation process. Background technique [0002] Aluminum-plastic composite film products are suitable for moisture-proof, light-proof, and vacuum packaging of chemical raw materials, pharmaceutical intermediates, and lithium iron phosphate cathode materials. It adopts two-layer structure, has good toughness, and has good water and oxygen barrier functions. The size is not limited, and packaging bags of different specifications and styles can be customized according to the body, and can be made into flat bags, three-dimensional bags and other styles. The product has been tested by GB standards and complies with environmental protection requirements (third-party test reports can be provided). [0003] In the prior art, in the process of preparing the composite aluminum film, the gas between the composite layers i...

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Problems solved by technology

[0003] In the prior art, in the process of preparing the composite aluminum film, the gas between the composite layers is extruded through the roller to prevent the composite unevenness caused by the existence of gas between the composite layers, but the existing gas is in the When extruding, it is easy to scratch the bulge on the composite layer due to the existence of gas and the surface of the composite layer, resulting in large-area damage on the surface of the composite layer, resulting in poor quality of the finished composite aluminum film

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