CN102049857A - Method for welding plastic thin film - Google Patents
Method for welding plastic thin film Download PDFInfo
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- CN102049857A CN102049857A CN2009102296540A CN200910229654A CN102049857A CN 102049857 A CN102049857 A CN 102049857A CN 2009102296540 A CN2009102296540 A CN 2009102296540A CN 200910229654 A CN200910229654 A CN 200910229654A CN 102049857 A CN102049857 A CN 102049857A
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Abstract
The invention discloses a method for welding a plastic thin film, comprising the following steps of: arranging a plurality of ultrasonic lines on a first adhering surface of a PVC (Polyvinyl Chloride) thin film, arranging an ultrasonic groove on a second adhering surface of a PE (Poly Ethylene) thin film, inserting the ultrasonic lines of the PVC thin film into the ultrasonic groove of the PE thin film, and then starting an ultrasonic generator, wherein the working frequency of the ultrasonic wave is 45 kHz, the welding time ranges from 0.001s to 10s, the welding pressure ranges from 100N to 500N, and the welding amplitude ranges from 2mum to 10mum. With the method, a joint with high thermal bonding strength and better welding quality can be obtained.
Description
Technical field
The present invention relates to a kind of Plastic Welding method, particularly a kind of plastic sheeting welding method.
Background technology
The plastic ultrasonic solder technology is one of plastics secondary processing method of getting up of newly-developed, it is a kind of heating connecting method that the molecule of working of plastics contact-making surface is merged fast by ultrasonic wave, when ultrasonic wave acts on thermoplastic plastics contact-making surface, the dither that meeting generation per second is several ten thousand times, this dither that reaches certain amplitude, by last weldment ultrasonic energy is sent to welding zone,, therefore can produces localized hyperthermia because the interface place acoustic resistance of i.e. two welding of welding zone is big.Because the plastics poor thermal conductivity, can't in time distribute for the moment again, accumulate in welding zone, cause the contact-making surface of two plastics to melt rapidly, add certain pressure after, make it be fused into one.After ultrasonic wave fails, allow pressure continue several seconds, make its coagulation forming, so just form a firm strand, reach the purpose of welding, weld strength can approach raw material intensity.The quality of Ultrasonic Plastic Welding depends on the amplitude of transducer soldering tip, three factors such as institute's plus-pressure and weld interval, and weld interval and soldering tip pressure can be regulated, and amplitude is by transducer and the decision of luffing bar.These three amount interactions have a suitable value, and when energy surpassed suitable the value, the meltage of plastics was just big, and the welding thing is yielding; If energy is little, then be difficult for welding, added pressure can not be too big.The supersonic welding connection technology has short, surperficial nothing damage of time, non-welding region does not generate heat, need not pre-treatment, simple operation and other advantages, has been widely used in fields such as Aero-Space, instrument and meter, packaging for foodstuff, electronics industry.
The frequency of plastic ultrasonic welding condition and welding equipment is relevant with the shape of welding material, and welding quality is had remarkable influence.The research work of most of bibliographical informations all sheet material, the sheet material of device for ultrasonic welding and plastics and composite thereof is finished, and its welding quality is relevant with technological parameters such as weld amplitude, weld interval, welding pressures.But at the report of plastic sheeting ultrasonic bonding research seldom, the welding of report PETP and LDPE film, PE and PET film is arranged, but the welding of studying PE and PVC film is not arranged.
Summary of the invention
The purpose of this invention is to provide a kind of plastic sheeting welding method, the heat sealing strength height of this kind welding method joint, weld interval is short.
The technical scheme that the present invention takes is:
A kind of plastic sheeting welding method, comprise the steps: on first binding face of PVC film, to be provided with several ultrasound lines, on second binding face of PE film, be provided with ultrasonic tank, the ultrasound lines of PVC film is inserted in the ultrasonic tank of PE film, start supersonic generator, the ultrasonic wave operating frequency is 45kHz, and be 0.001～10s weld interval, welding pressure is 100～500N, and weld amplitude is 2～10 μ m.
Welding point heat sealing strength test reference plastic film packaging bag heat sealing strength test method (QB/T2358-98) is carried out on WD-40025 type electronic universal tester.Record heat sealing strength and see Fig. 1.
Plastic sheeting welding method of the present invention adopts the welding manner of big weld amplitude and short weld interval, and the heat sealing strength height of joint can access welding quality preferably.
Description of drawings
Fig. 1 is a joint heat sealing strength of the present invention.
The specific embodiment
Embodiment 1
A kind of plastic sheeting welding method, comprise the steps: on first binding face of PVC film, to be provided with 3 ultrasound lines, on second binding face of PE film, be provided with ultrasonic tank, the ultrasound lines of PVC film is inserted in the ultrasonic tank of PE film, start supersonic generator, the ultrasonic wave operating frequency is 45kHz, and be 0.01s weld interval, welding pressure is 100N, and weld amplitude is 2 μ m.
Embodiment 2
A kind of plastic sheeting welding method, comprise the steps: on first binding face of PVC film, to be provided with 4 ultrasound lines, on second binding face of PE film, be provided with ultrasonic tank, the ultrasound lines of PVC film is inserted in the ultrasonic tank of PE film, start supersonic generator, the ultrasonic wave operating frequency is 45kHz, and be 10s weld interval, welding pressure is 500N, and weld amplitude is 8 μ m.
Embodiment 3
A kind of plastic sheeting welding method, comprise the steps: on first binding face of PVC film, to be provided with 2 ultrasound lines, on second binding face of PE film, be provided with ultrasonic tank, the ultrasound lines of PVC film is inserted in the ultrasonic tank of PE film, start supersonic generator, the ultrasonic wave operating frequency is 45kHz, and be 1s weld interval, welding pressure is 150N, and weld amplitude is 5 μ m.
Embodiment 4
A kind of plastic sheeting welding method, comprise the steps: on first binding face of PVC film, to be provided with 4 ultrasound lines, on second binding face of PE film, be provided with ultrasonic tank, the ultrasound lines of PVC film is inserted in the ultrasonic tank of PE film, start supersonic generator, the ultrasonic wave operating frequency is 45kHz, and be 2.5s weld interval, welding pressure is 140N, and weld amplitude is 10 μ m.
Claims (1)
1. plastic sheeting welding method, it is characterized in that comprising the steps: on first binding face of PVC film, to be provided with several ultrasound lines, on second binding face of PE film, be provided with ultrasonic tank, the ultrasound lines of PVC film is inserted in the ultrasonic tank of PE film, start supersonic generator, the ultrasonic wave operating frequency is 45kHz, and be 0.001～10s weld interval, welding pressure is 100～500N, and weld amplitude is 2～10 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102296540A CN102049857A (en) | 2009-10-30 | 2009-10-30 | Method for welding plastic thin film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102296540A CN102049857A (en) | 2009-10-30 | 2009-10-30 | Method for welding plastic thin film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102049857A true CN102049857A (en) | 2011-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102296540A Pending CN102049857A (en) | 2009-10-30 | 2009-10-30 | Method for welding plastic thin film |
Country Status (1)
| Country | Link |
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| CN (1) | CN102049857A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490358A (en) * | 2011-12-06 | 2012-06-13 | 中国科学院遗传与发育生物学研究所 | Ultrasonic compressing water spraying belt production method and equipment |
-
2009
- 2009-10-30 CN CN2009102296540A patent/CN102049857A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490358A (en) * | 2011-12-06 | 2012-06-13 | 中国科学院遗传与发育生物学研究所 | Ultrasonic compressing water spraying belt production method and equipment |
| CN102490358B (en) * | 2011-12-06 | 2014-04-09 | 中国科学院遗传与发育生物学研究所 | Ultrasonic compressing water spraying belt production method and equipment |
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| 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 |
Application publication date: 20110511 |