Detergent compositions

Details Detergent compositions Detergent compositions

C - Chemistry, Metallurgy

11

D

C11D 17/00 (2006.01) B30B 11/04 (2006.01) B30B 15/02 (2006.01) C11D 1/14 (2006.01) C11D 1/72 (2006.01) C11D 3/386 (2006.01) C11D 17/06 (2006.01)

Patent

CA 2286715

Tablets of detergent composition are compacted using relatively movable mould parts, at least one of which bears an elastomeric layer to contact the composition. This enhances permeability at the tablet surface and hence the speed of water uptake and speed of dissolution/disintegration at the time of use. Compaction is carried out with sufficient pressure to form tablets containing from 20 to 35 % air by volume. Tablets of the invention take up water rapidly upon immersion, such that at least 65 % of the air space within the tablet is filled with water within 30 seconds.

L'invention concerne des pastilles de compositions détergentes comprimées en utilisant des parties de moules relativement mobiles, dont au moins l'une comporte une couche élastomérique venant en contact avec la composition. Cela améliore la perméabilité à la surface de la pastille et donc la vitesse de reprise d'eau et la vitesse de dissolution/désintégration au moment de l'utilisation. Le compactage s'effectue avec suffisamment de pression pour former des pastilles contenant de 20 à 35 % d'air par volume. Les pastilles selon l'invention absorbent l'eau rapidement lors de l'immersion de telle façon qu'au moins 65 % de l'air à l'intérieur de la pastille est rempli d'eau en l'espace de 30 secondes.

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