Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
November 9, 2010
Patent Application Number
11783640
Date Filed
April 11, 2007
Patent Primary Examiner
Patent abstract
A joint part including a welding portion with a rim of an opening of a fuel resin tank as well as a high barrier property on its interface. The joint part has a multi-layer structure including a barrier layer and at least one of an inner layer and an outer layer coaxially laminated on an inner periphery and/or an outer periphery of the barrier layer, respectively, wherein the barrier layer is formed by a compound material composed of one or more of fuel permeation-resistant resin, such as ethylene vinyl alcohol copolymer, polyamide polyester or liquid crystal polymer, and polyethylene, while the inner layer and the outer layer are composed of high-density polyethylene or modified high-density polyethylene.
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