Composite packaging film forming process and making device

Abstract

The invention relates to a composite packaging film forming process which has a technical key point of comprising the following steps: a, feeding; b, raw material extruding; c, raw material mixing; d, tape-casting; e, thin film thickness measuring; f, electrode corona; g, tempering; h, trimming; and I, finished product recovering. The invention further relates to a making device of a composite packaging film. The making device comprises an extruder, a raw material mixer, a tape-casting unit, a thickness-measuring unit, a corona unit, a tempering unit and a winding unit, wherein a raw material adding hole, an extruding cavity and an extruding rod are arranged on the extruder; a raw material reflowing hole is formed in the raw material mixer; the tape-casting unit is arranged at one side of the raw material reflowing hole, and a cooling traction roll is arranged on the tape-casting unit; a corona guide rotary roll and a high-voltage electrode are arranged on the corona unit; a plurality of heating rotary rolls are arranged on the tempering unit; a cutter device and a winding roll arranged at one discharging side of the cutter device are arranged on the winding unit. The composite packaging film forming process is simple and is high in yield; the making device is simple in structure and can be used for preferably precipitating a smooth opening agent.

Description

【Technical field】 [0001] The invention relates to a molding process of a composite packaging film and a device for making the composite film. 【Background technique】 [0002] With the transformation of packaging to solvent-free automatic packaging machines and multi-channel automatic packaging machines, the original blown PE (polyethylene) film cannot meet customer requirements in terms of transparency, thickness uniformity and friction coefficient control, and must rely on cast PE film Improve product quality. The existing cast PE film molding process and equipment are relatively complicated, and the production cost is high. The smooth opening agent in the PE film cannot be precipitated well, which affects the yield of the PE film and the packaging efficiency when using the package. . 【Content of invention】 [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a composite film forming process that is simple in process,...

AI Technical Summary

Problems solved by technology

[0002] With the transformation of packaging to solvent-free automatic packaging machines and multi-channel automatic packaging machines, the original blown PE (polyethylene) film cannot meet customer requirements in terms of transparency, thickness uniformity and friction coefficient control, and must rely on cast PE film Improve product quality

The existing cast PE film molding process and equipment are relatively complicated, and the production cost is high. The smooth opening agent in the PE film cannot be precipitated well, which affects the yield of the PE film and the packaging efficiency when using the package.

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