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Mouth-sealing method for full biodegradation plastic film

A biodegradable plastic film technology, applied in the field of plastic film sealing, can solve the problems of reduced adhesion and strength, yellowing, hardening, and uneven sealing of the sealing, so as to achieve fast sealing speed and reduce labor intensity , the effect of uniform pressure

Inactive Publication Date: 2007-01-31
HUADAN FULL DEGRADATION PLASTICS HENAN PROV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the plastic films widely used in people's daily life have become an important accomplice to environmental pollution because they are not degradable. Now, the advent of fully biodegradable plastic films produced from plant fibers has solved this contradiction, but the complete biodegradation Plastics are different from ordinary plastics. When sealing film products made of fully biodegradable plastics, the ordinary double-sided resistance heat sealing method is used, and the sealing is uneven. If the temperature rises, the sealing will turn yellow and harden, causing The adhesion and strength of the seal are reduced, and it is easy to break

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] According to the sealing method of the fully biodegradable plastic film product of the present invention, the sealing templates on the upper and lower mold bodies of the compression molding machine are respectively electrically connected to the output ends of the high-frequency generator, and the fully biodegradable film that needs to be sealed is placed Between the upper and lower sealing templates, the pressing force is started to make the upper template drop and touch the lower template, and high-frequency vibrations are generated between the two templates, so that the molecules of the fully biodegradable film between the two templates vibrate to generate heat and bond together. , complete the sealing work at one time. The upper and lower sealing templates of the compression molding machine are strip-shaped straight or curved panels with adjustable width to meet the needs of films with different sealing shapes.

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PUM

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Abstract

A method for sealing the fully biodegradable plastic film includes such steps as electrically connecting the sealing plates of upper and lower moulds with the outputs of a HF generator, putting two fully biodegradable plastic films between said two sealing plates, closing both sealing plates to generate HF vibration which can thermally adhere both films to each other.

Description

technical field [0001] The invention relates to a sealing method for plastic films, in particular to a sealing method for completely biodegradable plastic films. Background technique [0002] At present, the plastic films widely used in people's daily life have become an important accomplice to environmental pollution because they are not degradable. Now, the advent of fully biodegradable plastic films produced from plant fibers has solved this contradiction, but the complete biodegradation Plastics are different from ordinary plastics. When sealing film products made of fully biodegradable plastics, the ordinary double-sided resistance heat sealing method is used, and the sealing is uneven. If the temperature rises, the sealing will turn yellow and harden, causing The stickiness and strength of the seal are reduced, and it is easy to break. Contents of the invention [0003] The purpose of the present invention is to provide a sealing method for completely biodegradable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/08
Inventor 白宝丰郭战锋杨靖宇
Owner HUADAN FULL DEGRADATION PLASTICS HENAN PROV