FIBRILLATED FOAMED POLYOLEFIN Russian patent published in 2011 - IPC C08J9/30 C08J9/00 B29C67/20 A61L15/24 

FIELD: chemistry.

SUBSTANCE: overall, the invention relates to production of foamed thermoplastic from an aqueous dispersion for use in absorbent materials. The method involves adding at least one foam-stabilising surfactant to an aqueous dispersion which contains a thermoplastic resin, water and a stabilising agent for dispersion systems to form a mixture. Fibre is then added to the mixture which is then foamed. Further, at least a portion of water is removed from the foam to obtain foamed material with a non-cellular fibrillated morphology. The foamed material with average density between approximately 0.02 g/cm³ and approximately 0.07 g/cm³ may be used in absorbent articles.

EFFECT: obtained foamed material has good tensile strength in wet or dry conditions and excellent quality with respect to collapsing in wet conditions compared to cellulose based fibre systems.

35 cl, 6 dwg, 3 tbl, 3 ex