초록 ▼

The present invention relates to an impermeable flexible multicompartment bag for medical use for sterile solutions, and to a method for the preparation of such bags. Impermeable flexible multicompartment bags for medical use for sterile solutions for perfusions, consisting of two welded sheets of a

The present invention relates to an impermeable flexible multicompartment bag for medical use for sterile solutions, and to a method for the preparation of such bags. Impermeable flexible multicompartment bags for medical use for sterile solutions for perfusions, consisting of two welded sheets of a composite material wherein the sheets forming the inner wall of the bag consist of a polypropylene and are bonded to an outer layer of a thermoplastic polymer by means of a polyolefin layer, characterized in that the sheets facing the contents of the bags which are made of a homophase copolymer of propylene are immediately welded in the intercompartment region and in the peripheral region such that the weld forming the intercompartment region can be ruptured with a force in the range of from 10 to 30 N while the weld in the peripheral region cannot be ruptured.

대표청구항 ▼

1. An impermeable flexible multicompartment bag for medical use comprising two sheets of a composite material welded together to form a bag having an inner surface, an outer surface, and intercompartment regions, each sheet comprising a polypropylene layer bonded to a layer of a thermoplastic polyme

1. An impermeable flexible multicompartment bag for medical use comprising two sheets of a composite material welded together to form a bag having an inner surface, an outer surface, and intercompartment regions, each sheet comprising a polypropylene layer bonded to a layer of a thermoplastic polymer by a polyolefin layer, the polypropylene layer being an one-phase copolymer of propylene having a homogeneous structure with uniform melting temperature range throughout the polypropylene layer; a peripheral weld in the peripheral region, so that the polypropylene layer forms the inner wall of the bag, being resistant to rupture by force less than a force great enough to rupture the sheets; and at least one inner weld formed by welding the interior of the sheets at a temperature of above 136.degree. C., wherein the inner weld, peripheral weld, and sheets form a bag with the intercompartment region and the inner weld can be ruptured with a force in the range of from 10 to 30 N.