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Patent Searching and Data


Title:
FRICTION BODY, WRITING IMPLEMENT, AND WRITING IMPLEMENT SET
Document Type and Number:
WIPO Patent Application WO/2018/003475
Kind Code:
A1
Abstract:
Provided is a friction body capable of reducing paper contamination after a strong force and / or a repetitive scratching operation, and a writing implement and a writing implement set provided with such a friction body. Provided are the friction body which discolors an image having thermochromic properties by frictional heat, comprising a styrene elastomer and having a compression set at 120°C of 80% or less and a shore A hardness of 60 to 98, and the writing implement and the writing implement set including the friction body. It is preferable for the styrene elastomer to be crosslinked.

Inventors:
FURUKAWA KAZUHIKO (JP)
NAKAMURA YUSUKE (JP)
NAKANISHI RYOTA (JP)
Application Number:
PCT/JP2017/021671
Publication Date:
January 04, 2018
Filing Date:
June 12, 2017
Export Citation:
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Assignee:
MITSUBISHI PENCIL CO (JP)
International Classes:
B43L19/00; B43K29/02
Foreign References:
JP2006123324A2006-05-18
JP2013111952A2013-06-10
Other References:
MANPEI HORII: "Gijutsu Kaihatsu Center ni Okeru Kaihatsu Shohin Shokai", TOA GOSEI KENKYU NENPO TREND, no. 7, 2004, pages 54 - 57, XP009518222
ANONYMOUS: "Hādoburokku ni han'nō-sei o mota seta shinki suiso tenka suchiren-kei netsukaso-sei erasutomā < seputon > V shirīzu no kaihatsu ni tsuite [Novel hydrogenated styrene-based thermoplastic elastomer with hard block reactivity: Development of V Series]", PRESS RELEASE KURARAY, 26 January 2004 (2004-01-26), pages 1 - 3, XP009518728, Retrieved from the Internet [retrieved on 20170713]
See also references of EP 3480028A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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