Information: Join today and make your research activities more affordable! Technical workshop participation fees and annual registration fees are available at member rates.
Notice: [Important] Announcement of Changes to Registration Fee Payment and Manuscript Upload Procedures for IEICE Technical Meetings
IEICE Technical Committee Submission System
Conference Paper's Information		 Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2026-07-29 14:20
Evaluation of Interfacial Behavior in Multilayer Coating Films Using Electric Field Tweezers
Hiroaki Nobuoka, Satoshi Ishida (Nippon Paint CS), Shujiro Mitani, Keiji Sakai (UTokyo) US2026-35
Abstract (in Japanese) (See Japanese page) 
(in English) Automotive coatings must increasingly reduce VOC emissions, energy consumption, and CO2 emissions, promoting waterborne, high-solids, and low-bake technologies. This study investigated a wet-on-wet two-layer system comprising Lower layer (LL) and Upper layer (UL). Drying-stage viscoelastic behavior was evaluated non-destructively by electric field tweezers while varying the needle-to-surface distance. LL and UL showed distinct relaxation behavior, whereas their single-layer relaxation parameters were independent of measurement distance. In the multilayer film, surface-sensitive measurements reproduced UL-like behavior, while deeper measurements revealed markedly slower relaxation than either single layer, suggesting interlayer migration, compositional changes, and mechanical coupling near the interface.
Keyword (in Japanese) (See Japanese page) 
(in English) Electric field tweezers / Viscoelasticity / Paint / Multilayer coatings / Wet-on-Wet process / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 131, US2026-35, pp. 13-17, July 2026.
Paper # US2026-35 
Date of Issue 2026-07-22 (US) 
ISSN 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)
Download PDF US2026-35

Conference Information
Committee US  
Conference Date 2026-07-29 - 2026-07-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Univ. of Osaka Suita Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Material characterization, Ultrasonics, etc. 
Paper Information
Registration To US 
Conference Code 2026-07-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Evaluation of Interfacial Behavior in Multilayer Coating Films Using Electric Field Tweezers 
Sub Title (in English)  
Keyword(1) Electric field tweezers  
Keyword(2) Viscoelasticity  
Keyword(3) Paint  
Keyword(4) Multilayer coatings  
Keyword(5) Wet-on-Wet process  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Hiroaki Nobuoka  
1st Author's Affiliation Nippon Paint Corporate Solutions Co.,Ltd. (Nippon Paint CS)
2nd Author's Name Satoshi Ishida  
2nd Author's Affiliation Nippon Paint Corporate Solutions Co.,Ltd. (Nippon Paint CS)
3rd Author's Name Shujiro Mitani  
3rd Author's Affiliation The University of Tokyo (UTokyo)
4th Author's Name Keiji Sakai  
4th Author's Affiliation The University of Tokyo (UTokyo)
5th Author's Name  
5th Author's Affiliation ()
6th Author's Name  
6th Author's Affiliation ()
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
21st Author's Name  
21st Author's Affiliation ()
22nd Author's Name  
22nd Author's Affiliation ()
23rd Author's Name  
23rd Author's Affiliation ()
24th Author's Name  
24th Author's Affiliation ()
25th Author's Name  
25th Author's Affiliation ()
26th Author's Name / /
26th Author's Affiliation ()
()
27th Author's Name / /
27th Author's Affiliation ()
()
28th Author's Name / /
28th Author's Affiliation ()
()
29th Author's Name / /
29th Author's Affiliation ()
()
30th Author's Name / /
30th Author's Affiliation ()
()
31st Author's Name / /
31st Author's Affiliation ()
()
32nd Author's Name / /
32nd Author's Affiliation ()
()
33rd Author's Name / /
33rd Author's Affiliation ()
()
34th Author's Name / /
34th Author's Affiliation ()
()
35th Author's Name / /
35th Author's Affiliation ()
()
36th Author's Name / /
36th Author's Affiliation ()
()
Speaker Author-1 
Date Time 2026-07-29 14:20:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2026-35 
Volume (vol) vol.126 
Number (no) no.131 
Page pp.13-17 
#Pages 5 
Date of Issue 2026-07-22 (US) 

[Return to Top Page]

[Return to IEICE Web Page]
The Institute of Electronics, Information and Communication Engineers (IEICE), Japan