CN1903553A - Mouth-sealing method for full biodegradation plastic film - Google Patents
Mouth-sealing method for full biodegradation plastic film Download PDFInfo
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- CN1903553A CN1903553A CN 200610048574 CN200610048574A CN1903553A CN 1903553 A CN1903553 A CN 1903553A CN 200610048574 CN200610048574 CN 200610048574 CN 200610048574 A CN200610048574 A CN 200610048574A CN 1903553 A CN1903553 A CN 1903553A
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- sealing
- mouth
- plastic film
- sealing method
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- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
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
The present invention relates to the mouth-sealing method of plastic sheeting, especially relate to the mouth-sealing method that is used for full biodegradation plastic film.
Background technology
A large amount of plastic sheetings that use in people's daily life at present, because non-degradable, become the important accomplice of contaminated environment, the appearance of the fully biodegradable plastic sheeting that present employing string is produced, this contradiction is solved, but complete biodegradable plastics is different from common plastics, using film article that biological degradation plastics does when sealing, adopt common two-sided resistance heat sealing method, sealing part is inhomogeneous, if the rising temperature, sealing part will turn to be yellow, hardening, cause the sticking and intensity reduction of sealing part, break easily.
Summary of the invention
The object of the invention is to provide a kind of mouth-sealing method that is used for full biodegradation plastic film.
For achieving the above object, the present invention can take following technical proposals:
The mouth-sealing method of full biodegradation plastic film goods of the present invention; the template of sealing on the upper and lower die body of molding press is electrically connected with the output of radio-frequency generator respectively; the complete biodegradable film that need seal is placed on and seals up and down between the template; start pressing power and make cope match-plate pattern decline contact lower bolster; produce dither between two templates, make the complete biodegradable film molecule between two templates take place to vibrate generation heat seal effect and be bonded as one.
The pressing power of described molding press adopts pneumatic control, can make its pressure even.
The template of sealing up and down of described molding press is straight plate of broad-adjustable bar shaped or curved slab, seals shape to adapt to difference.
The invention has the advantages that on the described molding press; the template of sealing on the lower mold body is electrically connected with the output of radio-frequency generator respectively; with the power heat source of radio-frequency generator as full biodegradation plastic film; according to the characteristic of the cellophane PVA (polyvinyl alcohol) of fully biodegradable (though under natural situation, possess the properties of transparency of height; but do not have heat sealability); full biodegradation plastic film to be sealed is placed on seals up and down between the template; startup pressing power makes cope match-plate pattern decline contact lower bolster, makes the full biodegradation plastic film molecule between two templates take place to vibrate generation heat seal effect and be bonded as one at generation dither ripple between two templates.This method is simple, practical, disposablely finishes the work of sealing, and the speed of sealing is fast, and the efficient height is anti-interference, and anti-sparking is safe and reliable; Pressing power with molding press adopts pneumatic control in actual use, can make its pressure even, alleviates working strength of workers greatly.Because this mouth-sealing method heat sealing strength height, tooled joint is not obvious can't to cause sealing part jaundice, hardening phenomenon.If the template of sealing up and down of molding press is designed to straight plate of broad-adjustable bar shaped or curved slab, can satisfies the multiple needs that seal shape.
The specific embodiment
The mouth-sealing method of full biodegradation plastic film goods of the present invention; earlier the template of sealing on the upper and lower die body of molding press is electrically connected with the output of radio-frequency generator respectively; the complete biodegradable film that need seal is placed on and seals up and down between the template; start pressing power and make cope match-plate pattern decline contact lower bolster; produce dither between two templates; make complete biodegradable film molecule between two templates that vibration take place and produce the heat seal effect and be bonded as one, disposablely finish the work of sealing.The template of sealing up and down of described molding press is straight plate of broad-adjustable bar shaped or curved slab, seals the needs of shape film to adapt to difference.
Claims (3)
1, a kind of mouth-sealing method of full biodegradation plastic film goods; it is characterized in that: the template of sealing on the upper and lower die body of molding press is electrically connected with the output of radio-frequency generator respectively; the complete biodegradable film that need seal is placed on and seals up and down between the template; start pressing power and make cope match-plate pattern decline contact lower bolster; produce dither between two templates, make the complete biodegradable film molecule between two templates take place to vibrate generation heat seal effect and be bonded as one.
2, the mouth-sealing method of full biodegradation plastic film goods according to claim 1 is characterized in that: the pressing power of described molding press adopts pneumatic control, can make its pressure even.
3, the mouth-sealing method of full biodegradation plastic film goods according to claim 1 and 2 is characterized in that: the template of sealing up and down of described molding press is straight plate of broad-adjustable bar shaped or curved slab, seals shape to adapt to difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610048574 CN1903553A (en) | 2006-08-09 | 2006-08-09 | Mouth-sealing method for full biodegradation plastic film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610048574 CN1903553A (en) | 2006-08-09 | 2006-08-09 | Mouth-sealing method for full biodegradation plastic film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1903553A true CN1903553A (en) | 2007-01-31 |
Family
ID=37672981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610048574 Pending CN1903553A (en) | 2006-08-09 | 2006-08-09 | Mouth-sealing method for full biodegradation plastic film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1903553A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101987660A (en) * | 2009-07-30 | 2011-03-23 | 中国商用飞机有限责任公司 | Heat and sound insulation block and manufacturing method thereof |
| CN110775369A (en) * | 2019-11-15 | 2020-02-11 | 湖南省客来宝生物能源科技有限公司 | Sealing device for degradable film |
-
2006
- 2006-08-09 CN CN 200610048574 patent/CN1903553A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101987660A (en) * | 2009-07-30 | 2011-03-23 | 中国商用飞机有限责任公司 | Heat and sound insulation block and manufacturing method thereof |
| CN110775369A (en) * | 2019-11-15 | 2020-02-11 | 湖南省客来宝生物能源科技有限公司 | Sealing device for degradable film |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |