Method of making a multilayer film
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United States of America Patent
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-
Dec 5, 1989
Issued Date -
N/A
app pub date -
Oct 21, 1988
filing date -
Aug 26, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention involves a method of making a multilayer film suitable for medical solution applications. Solution pH is controlled by the addition of a carbonate of an alkali metal to an ethylene ester or modified ethylene ester copolymer to form a blend, followed by the coextrusion of a core layer, first and second adhesive layers, and a sealant and outer layer to form a multilayer film having the blend in at least one of the adhesive layers. Alternatively, the blend may be present in the core layer.
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