| 摘要 |
PROBLEM TO BE SOLVED: To prevent the bending and collapse of a tube so as to prevent the elution of a harmful matter against a human body, by passing over a stay to the inside of a tube main body so as to form a plastic tube, and using as the material of the tube, polyolefin and styrene block copolymer elastomer. SOLUTION: A plastic tube 1 is formed by passing over a stay 3 to the inside of a tube main body 2. Styrene-chloroprene rubber, styrene-butadiene- styrene block copolymer, styrene-isoprene-styrene block copolymer, styrene- hydrogenated polyolefin-styrene copolymer, and styrene block copolymer elastomer such as styrene-rubber intermediate block-styrene copolymer, or a mixture of polyolefin with styrene block copolymer elastomer, are used as the material of the thusly formed plastic tube 1. |
