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Flexible tube for endoscope, and method for manufacturing the same
专利权人:
Nobuharu Takahashi
发明人:
Nobuharu Takahashi
申请号:
US13498580
公开号:
US09044139B2
申请日:
2010.09.13
申请国别(地区):
US
年份:
2015
代理人:
摘要:
A flexible tube 10 is constituted of a flexible tube material 14 and a covering layer 15 of two-layers of constitution having an inner layer 17 which covers the entire peripheral surface of the flexible tube material 14 and an outer layer 18 which covers the entire peripheral surface of the inner layer 17. The covering layer 15 is two-layer molded to have the inner layer 17 and the outer layer 18, by supplying two kinds of resins into one molding die at the same time, with being overlapped each other. As resins for molding the inner layer 17 and the outer layer 18, a combination of the soft resin and the hard resin is selected to be in conditions that the difference at the 100% modulus value, which is an index of a hardness after molding, is equal to or more than 10 MPa, and that the difference of the melt viscosity in the molding temperature of 150° C. to 200° C., which is an index of the fluidity in the molten state, is equal to or less than 2500 PaS.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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