MELT-EXTRUDED FILM
First Claim
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1. A process for producing a melt-extruded film comprising the steps of blending a) a water-soluble polymer, b) an active ingredient, and c) optional additives and subjecting the blend to melt-extrusion to produce an extruded melt and drawing the extruded melt at a draw-down ratio of from about 1.5 to about 20 to a film of a thickness of at least about 0.04 mm.
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Abstract
A melt-extruded film is produced by a process which comprises the steps of blending a) a water-soluble polymer, b) an active ingredient, and c) optional additives and subjecting the blend to melt-extrusion to produce an extruded melt and drawing the extruded melt at a draw-down ratio of from 1.5 to 20 to a film of a thickness of at least 0.04 mm.
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15 Claims
- 1. A process for producing a melt-extruded film comprising the steps of blending a) a water-soluble polymer, b) an active ingredient, and c) optional additives and subjecting the blend to melt-extrusion to produce an extruded melt and drawing the extruded melt at a draw-down ratio of from about 1.5 to about 20 to a film of a thickness of at least about 0.04 mm.
Specification