Process for making absorbent articles
AssigneeLever Brothers Company
InventorRoger B. Dehnel
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Abstract
The invention concerns a process for manufacturing a water-absorbent article in which particles of a water-swellable polymer are fixed to a water-absorbent substrate. The process includes the steps of forming on the surface of the water-swellable particles a coating of a thermoplastic adhesive resin; locating the coated particles in their unswollen and dry state on or within the water-absorbent substrate also in the dry state; and applying heat to soften the thermoplastic coating of the particles and pressing the particles and substrate to cause the particles to be bound to the substrate.
Claims5
A process for manufacturing a water-absorbent article in which particles of a water-swellable polymer are fixed to a water-absorbent substrate, which process comprises:
- 1. forming on the surface of the water-swellable particles a coating of a thermoplastic adhesive resin to form coated particles;
- 2. locating the coated particles in their unswollen and dry state on or within the water-absorbent substrate also in the dry state;
- and
- 3. applying heat to soften the thermoplastic coating of the particles and pressing the particles and substrate to cause the particles to be bound to the substrate.
Dependencies are inferred from the claim text.