FIELD: medicine.
SUBSTANCE: invention refers to medicine, particularly to a medical tube not containing PVC. The medical tube contains an inside layer containing 50 to 90 wt % of resin and 10 to 50 wt % of polypropylene at total weight of the inside layer; an intermediate layer containing 45 to 55 wt % of resin and 45 to 55 wt % of polypropylene at total weight of the intermediate layer; and an outer layer containing 20 to 55 wt % of resin and 45 to 80 wt % of polypropylene at total weight of the outer layer where resin in the inside layer, the intermediate layer and the outer layer contains polypropylene and thermoplastic elastomer.
EFFECT: medical tube has excellent flexibility, transparency, thermal stability and chemical stability, and also has excellent heat sealing with non-PVC medical packages for liquids, and gas impermeability.
9 cl, 2 dwg, 4 tbl, 6 ex
