PROBLEM TO BE SOLVED: To provide an extrusion-molded two-layer tube for medical care in which suitable flexibility is possessed, product handleability is excellent, and product producibility can be maintained.SOLUTION: There is provided an extrusion-molded two-layer tube for medical care that is inserted in a resin-made member to be adhesion-joined for medical care from the outside and adhesion-joining is performed by blocking by heating. The extrusion-molded two-layer tube for medical care is characterized in that an inner layer is formed of polyethylene, polypropylene, a styrenic elastomer, an olefinic elastomer, or a mixture of them, or a raw material which contains them as main components, which is a raw material having a melting point of at most the heating temperature, and an external layer is formed of polypropylene, a styrenic elastomer, an olefinic elastomer, or a mixture of them, or a raw material which contains them as main components, which is a raw material having a melting point exceeding the heating temperature, and a radial thickness of an external layer is 2%-5% based on a radial thickness of the entire tube.COPYRIGHT: (C)2014,JPO&INPIT【課題】好適な柔軟性を有し、製品取扱性に優れ、製品製造効率も維持可能な医療用押出成形二層チューブを提供すること。【解決手段】 樹脂製医療用被接合部材に外側から挿通して加熱によるブロッキングにより密着接合させる医療用押出成形二層チューブであって、内層には、ポリエチレン、ポリプロピレン、スチレン系エラストマー、オレフィン系エラストマー、もしくはこれらの混合物ないしこれらを主成分とする素材であって、前記加熱温度以下の融点をもつ素材を用い、外層には、ポリプロピレン、スチレン系エラストマー、オレフィン系エラストマー、もしくはこれらの混合物ないしこれらを主成分とする素材であって、前記加熱温度を越える融点をもつ素材を用い、外層の肉厚がチューブ全体の肉厚に対して2%~5%であることを特徴とする医療用押出成形二層チューブである。【選択図】なし
