Pre-conditioned foam pad

Details Pre-conditioned foam pad Pre-conditioned foam pad

A - Human Necessities

47

C

A47C 31/12 (2006.01) A47C 27/14 (2006.01) B29C 44/56 (2006.01) B68G 7/00 (2006.01)

Patent

CA 2737749

Mattresses and methods for processing a flexible foam material for use in a mattress to provide a mattress foam material that has more consistent firmness over time and area. The methods include pre-conditioning the foam pad (32) or mattress by applying a force across a substantial portion of a major surface of the mattress to compress or stretch the height of the foam, the length of the foam, and/or the width of the foam to break or open closed cells. In certain embodiments, the force is applied by repeatedly pressing a platen (42) against the foam pad (32) or placing the foam pad (32) between one or more rollers (54, 56).

L'invention concerne des matelas et des procédés permettant de traiter un matériau en mousse souple à utiliser dans un matelas en vue de produire un matériau en mousse pour matelas qui présente une fermeté constante au fil du temps et par rapport à l'aire. Les procédés consistent notamment à pré-conditionner le coussin ou le matelas en mousse par application d'une force à travers une partie importante d'une grande surface du matelas afin de comprimer ou d'étirer la hauteur de la mousse, sa longueur et/ou sa largeur afin de rompre ou ouvrir des cellules fermées. Dans certains modes de réalisation, la force est appliquée par pression répétée d'une platine contre le coussin en mousse ou par le placement dudit coussin entre un ou plusieurs rouleaux.

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