MULTILAYERED TUBE AND MEDICAL INSTRUMENT COMPRISING THE SAME

摘要

PROBLEM TO BE SOLVED: To eliminate the elution of a plasticizer while realizing incineration generating no harmful gas by using a resin compsn. consisting of a polypropylene resin and a specific copolymer and changing the content of the polypropylene resin to a specific range to form a base material layer and an adhesive layer to obtain a multilayered tube. SOLUTION: When a multilayered tube including a base material layer A (inner layer 3) and an adhesive layer B (outer layer 5) is formed, a resin compsn. of a polypropylene resin (a) and a hydrogenated copolymer (b) obtained by hydrogenating a copolymer consisting of a polymer block comprising a vinyl aromatic compd. and an isoprene or butadiene polymer block is used in both layers A, B. The base material layer A consists of 20-30 mass % of the polypropylene resin (a) and 80-70 mass % of the hydrogenated block copolymer (b) and the adhesive layer B comprises a resin compsn. consisting of 50-70 mass % of the polypropylene resin (a) and 50-30 mass % of the hydrogenated block copolymer (b).