Self adhesive material with a water soluble protective layer
AssigneeArrow Coated Products Ltd.
InventorShilpan Pravinchandra Patel
Life of this patent
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Abstract
The invention relates to self adhesive material (SAM) using water soluble film incorporated with surfactants and/or fillers as a protective layer, eliminating the release liner (backing liner). The water soluble film incorporated with surfactants and/or fillers, used as a protective liner, provides easy breakage, faster dissolution as well as easy application to an object. The invention also relates to a process for the preparation of self adhesive material (SAM) without release liner and an apparatus and a method for applying the self adhesive material (SAM) on an object.
Claims6
A process for producing a self adhesive material (SAM), comprising:
- (aa) unwinding a preformed WSF from an unwinder of a coating machine, said preformed WSF having a liner on one surface;
- (bb) coating the PSA on a surface of the said WSF opposite the liner;
- (cc) drying the WSF coated with PSA in a dryer;
- (dd) laminating a face material/substrate on a surface of the PSA opposite the WSF, the face material/substrate selected from a paper, a foil, a polymeric material selected from the group consisting of PVC (poly vinyl chloride), HIPS (High Impact Polystyrene), LLDPE (Linear Low Density Poly Ethylene), heat shrink LLDPE, polyester film, kapton film and combinations thereof, a fabric and combinations thereof, and wherein the face material/substrate includes a material on which graphic or indicia can be printed/written;
- (ee) detaching the liner from the WSF to form the SAM;
- and
- (ff) rewinding the SAM on a rewinder.
Dependencies are inferred from the claim text.