BAG FOR MEDICAL TREATMENT

摘要

PURPOSE:To obtain the bag for medical treatment having excellent molding stability in long-term continuous production without losing flexibility and transparency even if the ratio of a high-density polyethylene(HDPE) resin in an inside layer is increased by setting the ratio of the thickness of the inside and outside layers loewr than the thickness of an intermediate layer. CONSTITUTION:The bag for medical treatment is formed of laminated films, sheets or tubes of >=3 layers. At least the inside layer of the inside and outside layers consist of the HDPE resin having >=0.945g/cm<2> density and <=4.0Mw/Mn or a compsn. contg. <60wt.% low-density polyethylene(LDPE) resin which has <=0.930g/cm<2> density and is obtd. by radical polymn. in the HDPE resin. The intermediate layer consists of a compsn. contg. <15wt.% HDPE resin having >=0.945g/cm<3> density and <=4.0Mw/Mn in a linear low-density polyethylene(LLDPE) copolymer having a short chain branch of <=0.920g/cm<3>. Further, the ratio between the total of the thickness of the inside layer and the outside layer and the thickness over the entire part is specified to a range from 0.01 to 0.20.