Invention Grant
US09000330B2 Sheet composition for pipe connection, and sheet for electrofoaming fusion and connecting apparatus for underground pipes using the sheet composition
有权
用于管道连接的片材组合物，以及用于使用该片材组合物的地下管道的电熔融和连接装置的片材
- Patent Title: Sheet composition for pipe connection, and sheet for electrofoaming fusion and connecting apparatus for underground pipes using the sheet composition
- Patent Title (中): 用于管道连接的片材组合物，以及用于使用该片材组合物的地下管道的电熔融和连接装置的片材
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Application No.: US13520740Application Date: 2010-11-17
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Publication No.: US09000330B2Publication Date: 2015-04-07
- Inventor: Soo Young Joo
- Applicant: Soo Young Joo
- Agency: The H.T. Than Law Group
- Priority: KR10-2010-0001406 20100107
- International Application: PCT/KR2010/008126 WO 20101117
- International Announcement: WO2011/083913 WO 20110714
- Main IPC: H05B1/00
- IPC: H05B1/00 ; C08J3/22 ; B29C65/34 ; B29C65/00 ; C08L23/04 ; F16L47/03 ; C08J9/00 ; C08J9/10 ; B29C44/12 ; F16L19/00
Abstract:
The present invention relates to a connecting apparatus used for connecting underground pipes and to a composition for preparing a foamed sheet for the same. Specifically, the present invention relates to a sheet composition for pipe connection which comprises 1 to 10 parts by weight of a masterbatch including low-density polyethylene, high-density polyethylene, a maleic anhydride graft copolymer, a metallocene polyethylene elastomer, a foaming agent, and an additive, based on 100 parts by weight of a base resin including low-density polyethylene, high-density polyethylene, a maleic anhydride graft copolymer, and a metallocene polyethylene elastomer. When using the composition according to the present invention, a non-foamed sheet is produced during melt extrusion, and a foamed sheet is obtained at a high temperature by laminating the non-foamed sheet with a heater line and applying electricity thereto. Therefore, the sheet composition can be fused and filled into a pipe.
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