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In-situ foam core structural articles and methods of manufacture of profiles

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B29C-044/20    B32B-001/08    B29C-044/32   
출원번호 US-0463689 (2012-05-03)
등록번호 US-9102086 (2015-08-11)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Brooks Kushman P.C.
인용정보 피인용 횟수 : 0  인용 특허 : 44
초록
▼

A method of manufacturing an elongated article is recited to include extruding a first and a second layer each having peripheries. The second layer is spaced apart from and opposed to the first layer. Together, they define a cavity between them. Into that cavity particles are dispensed. The particles are expanded with an expansion fluid to form an in-situ foam core and to thermally bond the in-situ foam core to the first and second layers. The first and second layers having the thermal bond to the in-situ foam core are shaped to form the article. An elon...

대표
청구항
▼

1. A method of manufacturing an elongated article, the method comprising the steps of: extruding a first layer plastic resin having a periphery which forms at least a portion of a wall of an elongate member having a hollow internal cavity;dispensing a plurality of heat expandable particles into a fill region of the hollow internal cavity while the elongate member is still connected to an extruder and moving along an extrusion axis;expanding the particles with a heated expansion fluid which is introduced into an expansion region of the cavity while the el...

이 특허에 인용된 특허 (44)

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  7. Motoi, Koji; Matsuo, Ryuichi; Muranaka, Takeshi; Murata, Takumi. Composite material and synthetic sleeper using the composite material. USP2003086605343.
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  35. Hattori Kazuhide (Mie JPX) Yamaji Hiroyuki (Mie JPX) Hatakeyama Yoshikazu (Niigata JPX) Shida Yoshiyuki (Niigata JPX) Tamura Atushi (Tokyo JPX) Kitaoka Takumi (Tokyo JPX) Kohama Takashi (Tokyo JPX). Process for producing expanded plastics with skin. USP1994115366674.
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  44. Yuan, Qiang. Wholly wrapped railroad crosstie and its manufacturing method. USP2011057950592.

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