Melt-extruded film
OwnerMark J. Hall, Michael D. Read +1inventors
InventorsMark J. Hall, Michael D. Read, Uma Shrestha
Life of this patent
Estimating the term…
Abstract
A mono-layer or multi-layer film wherein at least one of the layers has a thickness of at least 0.125 mm is produced from a melt-extruded polymer composition comprising a) a water-soluble polymer, b) an active ingredient and c) an adjuvant selected from the group consisting of mono- and disaccharides, sugar alcohols, low molecular weight water soluble polymers, and salts of cross-linked carboxymethylcellulose, with the proviso that the adjuvant c) is different from the water-soluble polymer a).
Claims14
A mono-layer or multi-layer film wherein at least one of the layers has a thickness of at least about 0.125 mm and is produced from a melt-extruded polymer composition comprising a) a water-soluble polymer, b) an active ingredient and c) an adjuvant selected from the group consisting of mono- and disaccharides, sugar alcohols, low molecular weight water soluble polymers, and salts of cross-linked carboxymethylcellulose, with the proviso that the adjuvant c) is different from the water-soluble polymer a).
A process for producing a melt-extruded film comprising the steps of
- i) blending a) a water-soluble polymer, b) an active ingredient and c) an adjuvant selected from the group consisting of mono- and disaccharides, sugar alcohols, low molecular weight water soluble polymers, and salts of cross-linked carboxymethylcellulose, with the proviso that the adjuvant c) is different from the water-soluble polymer a), and, if desired, d) an optional additive and
- ii) subjecting the blend to melt-extrusion to produce a film of a thickness of at least about 0.125 mm.
Dependencies are inferred from the claim text.