Method of making shaped foam

A - Human Necessities – 61 – L

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A61L 15/42 (2006.01) C08J 9/28 (2006.01)

Patent

CA 2387730

Described is a method of forming and curing high internal phase emulsions (HIPEs) into shaped three dimensional foam implements. In general the method uses the steps of: providing a HIPE, depositing the HIPE into a mold cavity having a predetermined three dimensional shape, curing the HIPE in the mold cavity to form a HIPE foam, and stripping the HIPE foam from the mold cavity to form the three dimensional foam implement. The molded implements are widely useful as components in absorbent articles, toys, insulation, and other uses where a combination of low density and tridimensional shape are desired.

L'invention concerne un procédé de formation et de durcissement d'émulsions à phase interne élevée (HIPE), d'où l'obtention de produits formés tridimensionnels en mousse. Généralement, ce procédé consiste à former une émulsion HIPE, à introduire cette émulsion HIPE dans une cavité de moulage présentant une forme tridimensionnelle prédéterminée, à durcir cette émulsion HIPE dans la cavité de moulage de manière à former une mousse HIPE, puis à détacher cette mousse HIPE de la cavité de moulage de façon à obtenir ledit produit tridimensionnel en mousse. Ces produits moulés sont généralement destinés à des articles absorbants, des jouets et des éléments isolants, entre autres, présentant une faible densité ainsi qu'une forme tridimensionnelle.

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