Unitized thermoplastic foam structures

A - Human Necessities – 47 – C

Patent

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Details

A47C 23/04 (2006.01) A47C 27/05 (2006.01) A47C 27/20 (2006.01) B68G 5/02 (2006.01) B68G 11/06 (2006.01)

Patent

CA 2518813

Three-dimensional unitized thermoplastic foam structures are made by thermoplastic welding of different foam components. The unitized foam structures may include a planar base to which other foam components are welded to project from the base and provide a flexible three-dimensional structure. The thermal bonding or welding of the thermoplastic foam components creates a unitized structure which is both flexible and load bearing. For mattress and seating applications, the welded foam structures may be combined with an innerspring, and certain of the foam components of the structure may mechanically engage parts of the innerspring. The preferred foam deck has first and second panels interconnected by one or more webs. One or more foam decks may be employed. Other foam components may be attached to the foam decks or other components. The unitized foam structures can be employed as single or double-sided mattresses, seating structures or other flexible support structures.

L'invention concerne des structures en mousse thermoplastique unitaires tridimensionnelles que l'on obtient par soudage thermoplastique de différents composants de mousse. Les structures de mousse unitaires peuvent comprendre une base planaire à laquelle d'autres composants de mousse sont soudés afin de faire saillie depuis la base et fournir une structure tridimensionnelle flexible. La liaison ou le soudage thermique des composants de mousse thermoplastiques crée une structure unitaire qui est à la fois flexible et porteuse. En vue d'applications comme matelas et siège, les structures de mousse soudées peuvent être combinées à un jeu de ressort et certains composants de mousse de la structure peuvent mécaniquement être emboîtés dans des parties du jeu de ressort. L'étage de mousse préparé comporte des premier et second panneaux interconnectés par une ou plusieurs bandes. Un ou plusieurs étages de mousse peuvent être utilisés. D'autres composants de mousse peuvent être fixés aux étages de mousse ou à d'autres composants. Les structures de mousse unitaires peuvent être utilisées comme matelas simple ou double, comme structures pour s'asseoir ou comme autres structures de support flexibles.

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