Absorbent aliphatic polyurethane foam product
AssigneeSentient Foams Limited
InventorsRoderick Davidson, Chaminda Koralalage
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Abstract
The present invention relates to foam. In particular, the present invention relates to profiled foams and processes for profiling absorbent foam products. More particularly, the present invention relates to processes for producing a profiled absorbent polyurethane foam product, comprising the steps of foaming, curing, profiling and drying, wherein profiling occurs before drying; and absorbent aliphatic polyurethane foam products having at least one profiled surface.
Claims16
An absorbent aliphatic polyurethane foam product having at least one profiled surface, wherein the profiled surface comprises:
- one or more indented, compressed portions and one or more raised, non-compressed portions;
- wherein, the one or more raised, non-compressed portions have a lower density than the one or more indented, compressed portions, wherein the one or more raised, non-compressed portions have a density of 100 to 140 kg/m3 and the one or more indented, compressed portions have a density of 140 to 180 kg/m3;
- wherein, the one or more raised, non-compressed portions have a greater absorbency of fluid than the one or more indented, compressed portions;
- wherein the one or more raised, non-compressed portions have an absorbency of fluid of greater than about 40 g/100 cm2;
- wherein, the one or more indented, compressed portions have a faster speed of absorption of a fluid droplet when compared to the one or more raised, non-compressed portions;
- wherein the indented, compressed portions have a lower fluid retention than the raised, non-compressed portions;
- wherein, the one or more raised, non-compressed portions are reservoirs for absorbed fluid and the one or more indented, compressed portions have capillary motor action of fluid between neighbouring regions of the one or more raised, non-compressed portion, or between neighbouring raised, non-compressed portions;
- and wherein, the absorbent aliphatic polyurethane foam product has a more even distribution of the absorbed fluid around the foam product as compared to an equivalent non-profiled product.
Dependencies are inferred from the claim text.