Paper Abstract and Keywords |
Presentation |
2011-12-22 14:15
A Hypothesis on the Mechanism of Ultrasonic Plastic Joining Kazunari Adachi (Yamagata Univ.) US2011-80 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Ultrasonic plastic joining is an excellent fabrication technique widely used in various industries, most typically, such as automobile industry. Nevertheless, the joining mechanism has not been clarified yet, and further development and exploitation of this technique has thus been hampered. It used to be believed that the ultrasonically generated heat at the joining interface between the plastic parts welds them, but recent studies reveals that the mechanism of ultrasonic plastic joining cannot be attributed to such heat-sealing effect. In the present paper, first shown are the results of the authors’previous research on physical characteristics of VLDPE ( very low density polyethylene ) and PET ( polyethylene-terephthalate) films of 0.1 mm thickness joined by torsional ultrasonic vibration, which well demonstrate that the ultrasonic joining is quite different from heat-sealing. Secondly, the authors show the phenomenon that the PET films are not joined at all by the torsional ultrasonic vibration when the initial temperature of the specimens is over the glass transition temperature (Tg) and under the re-crystallization temperature of the material. Lastly, a hypothesis on the mechanism of ultrasonic joining based on those facts is proposed. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
ultrasonic plastic joining / glass transition temperature / re-crystallization temperature / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 111, no. 370, US2011-80, pp. 19-24, Dec. 2011. |
Paper # |
US2011-80 |
Date of Issue |
2011-12-15 (US) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
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US2011-80 |
Conference Information |
Committee |
US |
Conference Date |
2011-12-22 - 2011-12-22 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Suzukakedai Campus, Tokyo Institute of Technology |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
High Power Ultrasound |
Paper Information |
Registration To |
US |
Conference Code |
2011-12-US |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
A Hypothesis on the Mechanism of Ultrasonic Plastic Joining |
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ultrasonic plastic joining |
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glass transition temperature |
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re-crystallization temperature |
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1st Author's Name |
Kazunari Adachi |
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Yamagata University (Yamagata Univ.) |
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Speaker |
Author-1 |
Date Time |
2011-12-22 14:15:00 |
Presentation Time |
25 minutes |
Registration for |
US |
Paper # |
US2011-80 |
Volume (vol) |
vol.111 |
Number (no) |
no.370 |
Page |
pp.19-24 |
#Pages |
6 |
Date of Issue |
2011-12-15 (US) |
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