Flexible container material
AssigneeCutter Laboratories, Inc.
InventorMohan S. Mahal
Life of this patent
Estimating the term…
Abstract
Film material for use in sterilized medical solution containers such as blood bags or I.V. bags, comprising 30-90% linear low density polyethylene (LLDPE) and 10-70% styrene-ethylene-butylene-styrene (SEBS). The particular LLDPE and SEBS materials are selected from among known LLDPE and SEBS materials according to density, in the case of LLDPE, and styrene/rubber ratio and composition in the case of SEBS. Up to 10% of an optional third component such as high melt index LLDPE or polypropylene may be added as a processing aid. Material having greater than 50% LLDPE is particularly well suited for medical solution container application.
Claims14
A flexible film material, comprising:
- (a) a first component of 30-90% linear low density polyethylene material having a density of 0.918-0.940 g/cm.sup.3 and a melting point less than 125.degree. C.;
- (b) a second component of 10-70% of styrene-ethylenebutylene-styrene block copolymer;
- (c) said components being selected and proportioned so that a flexible film container may be manufactured therefrom and sterilized at temperatures up to 120.degree. C.
The material of claim 6 wherein said first component has a Vicat softening point in excess of 90.degree. C.
A flexible film material consisting essentially of:
- (a) a first component of 30-90% linear low density polyethylene material having a density of 0.918-0.940 g/cm.sup.3 and a melting point less than 125.degree. C.;
- (b) a second component of 10-70% of styrene-ethylene-butylene-styrene block copolymer;
- and
- (c) a third component of 1-10% of polyolefin having an MI of 5-50, being heat sterilizable at temperatures up to 120.degree. C.
A flexible film material consisting essentially of:
- (a) a first component of linear low density polyethylene having a density of 0.918-0.940 g/cm.sup.3 and a melting point of less than 125.degree. C.;
- (b) a second component of styrene-ethylene-butylene-styrene block copolymer being substantially free of additives and having a styrene to rubber ratio of 25-35/65-75;
- and
- (c) 0-10% of a third component having a melt index of 5-50 and selected from the group consisting of linear low density polyethylene and polypropylene.
Dependencies are inferred from the claim text.