Plastic fresh-keeping bag preparation and processing machine and preparation and processing method

Abstract

The invention relates to a plastic fresh-keeping bag preparation and processing machine and preparation and processing method. The plastic fresh-keeping bag preparation and processing machine comprises a workbench, wherein the workbench is fixedly mounted on the ground, and an extruder is fixedly mounted on the ground and below the middle part of the top of the workbench. According to the plasticfresh-keeping bag preparation and processing machine, air outlets can be provided on air outlet panels on the two sides, the air outlets are inclined towards the upper portion, air cavities are provided between the two sides of the two air outlet panels and the interior of an outer frame, air in the air cavities is blown to a plastic film between two first guide wheels through the inclined structures of the air outlets, therefore the plastic film can be assisted in moving upwards through air ejected out of the air outlets, a guide function of the first guide wheels can be reserved while it isguaranteed that the plastic film moves upwards, the phenomenon that the plastic film is attached to the first guide wheels too tightly and therefore adhesion is caused is avoided, meanwhile, the plastic film can be cooled step by step in a contraction process of the plastic film, the follow-up adhesion probability is reduced, and the product quality is improved.

Description

technical field [0001] The invention relates to the technical field of processing plastic fresh-keeping bags, in particular to a plastic fresh-keeping bag preparation and processing machine and a preparation and processing method. Background technique [0002] Film blow molding is a main method of producing plastic fresh-keeping bags (also called plastic film). The central hole of the mandrel of the machine head is fed with compressed air, and the cylinder is blown into a bubble tube shape to obtain a bubble tube with a certain inflation multiple, and finally folded flat into a double-layer film, which is wound up by the winding device, but the existing equipment There are some problems in the processing and production process: [0003] Although the existing equipment is cooled by the ring cooling device after being extruded in the extruder, in order to ensure the uniform thickness of the extruded plastic film, the extruded plastic cannot be completely cooled, and a certain...

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Problems solved by technology

[0003] Although the existing equipment is cooled by the ring cooling device after being extruded in the extruder, in order to ensure the uniform thickness of the extruded plastic film, the extruded plastic cannot be completely cooled, and a certain degree of stretchability is required. , and the plastic film that has not been completely cooled will have a certain degree of stickiness, and the existing device cannot cool and cool the plastic film well in the process of flat folding and subsequent winding process, so that When the traction roller is pulled and flat-folded, it will bond with the guide roller of the forming device. This will not only affect the thickness uniformity of the produced film, but also directly cause the plastic film to break if it is serious. Once a break occurs , it will affect the whole winding process, need to rewind, and the efficiency will be greatly reduced

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