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HIGH DENSITY POLYETHYLENE TUBE AND JOINT
HIGH DENSITY POLYETHYLENE TUBE AND JOINT
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机译：高密度聚乙烯管和接头
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摘要
Provided are high-density polyethylene pipes and joints in which deterioration due to external factors such as radiation, oxygen, and ultraviolet rays or chemical cracks caused by chemical substances are suppressed. The high-density polyethylene pipe 10 and the joint cover the conduit 1 mainly composed of high-density polyethylene having a density of 0.940 g/cm 3 or more and 0.980 g/cm 3 or less, and an inner surface of the conduit 1, and an ethylene/vinyl alcohol copolymer resin The gas barrier film 2a including the inside, the outer gas barrier film 2b covering the outer surface of the conduit 1, and containing an ethylene/vinyl alcohol copolymer resin, and the gas barrier film 2b outside A low-density polyethylene having a density of 0.910 g/cm 3 or more and 0.930 g/cm 3 or less, covering the outer surface of the film, covering the outer surface of the fusion-prevention film 3b, and containing a resin having a melting point of 150° C. or higher. The outer layer 4b which is a main component is provided.
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机译：提供了高密度的聚乙烯管和接头，其中抑制了由于诸如辐射，氧气和紫外线的外部因素引起的劣化或由化学物质引起的化学裂缝。高密度聚乙烯管10和接头覆盖主要由密度为0.940g / cm 3以上且0.980g / cm 3以下的高密度聚乙烯构成的导管1，以及导管1的内表面。阻气膜2a，其内部包括：内部，覆盖导管1的外表面并包含乙烯/乙烯醇共聚树脂的外部阻气膜2b;以及在A外侧的阻气膜2b密度为0.910g / cm 3以上且0.930g / cm 3以下的低密度聚乙烯，覆盖膜的外表面，覆盖防熔膜3b的外表面，并含有具有熔点为150℃以上。提供作为主要成分的外层4b。
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