Plastic fresh-keeping bag preparation and processing machine and preparation and processing method
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 谢富玉
- Publication Date
- 2020-12-18
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
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...