초록 ▼

In a multilayer flexible film sutable for medical solution packaging, film-derived extractables are controlled by the use of a small amount of a high molecular weight stabilizer in the outer layer of the film. Solution pH can be controlled by the addition of a carbonate of an alkali metal to at leas

In a multilayer flexible film sutable for medical solution packaging, film-derived extractables are controlled by the use of a small amount of a high molecular weight stabilizer in the outer layer of the film. Solution pH can be controlled by the addition of a carbonate of an alkali metal to at least one intermediate adhesive layer and/or the core layer of the film.

대표청구항 ▼

In a multilayer flexible film comprising a sealant layer, a core layer of very low density polyethylene, an outer layer of a flexible polyester or copolyester, and a first and a second intermediate adhesive layer, wherein said first adhesive layer bonds the core layer to the sealant layer and wherei

In a multilayer flexible film comprising a sealant layer, a core layer of very low density polyethylene, an outer layer of a flexible polyester or copolyester, and a first and a second intermediate adhesive layer, wherein said first adhesive layer bonds the core layer to the sealant layer and wherein said second adhesive layer bonds the core layer to the outer layer, said adhesive layers comprising ethylene ester copolymers or modified ethylene ester copolymers, the improvement comprising the inclusion in at least one intermediate layer of a carbonate of an alkali metal. In a multilayer flexible film comprising a sealant layer, a core layer of very low density polyethylene, an outer layer of a flexible polyester or copolyester, and a first and a second intermediate adhesive layer, wherein said first adhesive layer bonds the core layer to the sealant layer and wherein said second adhesive layer bonds the core layer to the outer layer, said adhesive layers comprising ethylene ester copolymers or modified ethylene ester copolymers, the improvement comprising inclusion in the core layer of a carbonate of an alkali metal.