Patent ID: 8888755

Claim:
A disposable bag comprising a multilayer film for accommodating a fluid, wherein said multilayer film has a tensile elongation in longitudinal direction of 250% to 850%, and in transverse direction of 300% to 1050% and comprises: a) a type (A) layer, comprising several components, wherein one component is a styrene-isoprene block copolymer, styrene-ethylene-butylene block copolymer, styrene-ethylene-propylene block copolymer or a mixture thereof, and a further component is polyethylene or a copolymer which comprises ethylene units and wherein the proportion of the one component in the type (A) layer lies in the range of 35 wt. % to 99.99 wt. %, relative to the total composition of the type (A) layer and b) two or more type (B) layer(s) comprising several components independently of one another, wherein one component is a styrene-ethylene-butylene block copolymer, styrene-ethylene-propylene block copolymer, styrene-isoprene block copolymer or a mixture thereof, and a further component is a polypropylene or a copolymer which comprises propylene units and wherein the proportion of the one component in the type (B) layer lies in the range of 55 wt. % to 99.99 wt. % and the proportion of the further component in the type (B) layer is in the range of 1 wt. % to 45 wt. %, relative to the total composition of the type (B) layer and wherein the type (A) layer is a middle layer having a thickness of ≧100 μm and is surrounded by two type (B) layers having a thickness of ≦40 μm.