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公开(公告)号：US20200002109A1
公开(公告)日：2020-01-02
申请号：US16367254
申请日：2019-03-28
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： MASASHI HAMAKUBO , TOSHIYUKI HIRAI , YOSHIHIRO YAMADA
Abstract: Provided are a rubber composition capable of imparting a high tensile strength to a roller main body so as to be able to be used for equipment that allows paper to pass through at high speed, while maintaining high abrasion resistance of the roller main body and a favorable paper feeding performance of the paper feeding roller; and a paper feeding roller. There is provided a rubber composition contains: a rubber that includes a non-oil extended EPDM having an ethylene content of 55 to 72%; and more than 20 parts by mass and 30 parts by mass or less of a filler, and 2.5 parts by mass or more of a peroxide crosslinking agent per 100 parts by mass of the rubber, in which the filler contains 15 to 30 parts by mass of an amorphous silica per 100 parts by mass of the rubber.
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公开(公告)号：US20190016875A1
公开(公告)日：2019-01-17
申请号：US15990835
申请日：2018-05-29
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： YUDAI OKUNO , MASASHI HAMAKUBO , AKIHIRO MINE , TOSHIYUKI HIRAI , YOSHIHIRO YAMADA
IPC: C08L9/00 , B41J13/076 , B65H5/06
CPC classification number: C08L9/00 , B41J13/076 , B65H5/06 , B65H2401/111 , B65H2404/19 , B65H2515/716 , C08K3/017 , C08L23/16 , C08L2201/04 , C08L2205/025 , C08L2205/03 , C08L91/00
Abstract: There is provided a rubber composition in which an antistatic agent is uniformly dispersed and the rubber composition has antistatic ability, coefficient of friction, and wear resistance. A rubber composition includes 7 parts by mass or more of a polyether/polyolefin block copolymer resin with respect to 100 parts by mass of a rubber component, and the total amount or a part of a rubber component is mixed with a polyether/polyolefin block copolymer resin at a temperature that is equal to or higher than a melting point of the polyether/polyolefin block copolymer resin.
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