Water soluble film

Details Water soluble film Water soluble film

1992-09-14

1995-07-04

Nold, Charles R.

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

4284111, 428520, 428 352, 428 354, 428 367, B32B 108

Patent

active

054298741

ABSTRACT:
A water soluble film suitable for packaging caustic chemicals has an outer layer of a water soluble polymeric material, and an inner layer of a polymeric material which is compatible with the contents of a package made from the film. An intermediate layer can optionally be included to contribute to the tensile strength, bulk, or abuse resistance, or some other property of the film. Water soluble fillers such as salt can optionally be added to one or more of the polymeric materials, prior to or during extrusion of the film, to improve the processability of the film or its rate of dissolution in water, or to add a pigment to the film.

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