Membrane composite structure and method of production

Details Membrane composite structure and method of production Membrane composite structure and method of production

B - Operations, Transporting

32

B

B32B 3/06 (2006.01) B01D 69/10 (2006.01) B01D 71/36 (2006.01) B29C 65/14 (2006.01) B29C 65/18 (2006.01) B32B 5/18 (2006.01) B32B 5/22 (2006.01) B32B 27/04 (2006.01)

Patent

CA 2482844

A composite structure (12) that includes a first layer that includes a membrane (16) having a first melting point and a plurality of structural elements and a second layer that includes a thermoplastic material (32) having a second melting point that is lower than the first melting point, wherein at least a portion of the thermoplastic material (34) is at least one partially melted to flow around at least one structural element of the plurality of structural elements of the membrane (16) prior to resolidification to attach the first layer (16) to the second layer (32). The membrane (16) can be oleophobic or oleophilic and preferably includes expanded polytetrafluoroethylene. The thermoplastic material (32) can be of virtually any type and can be either hydrophobic or hydrophilic.

La présente invention concerne une structure composite (12) qui comprend une première couche qui comprend une membrane (16) ayant un premier point de fusion et une pluralité d'élément structurels, et une seconde couche qui comprend une matière thermoplastique (32) ayant un second point de fusion inférieur au premier, au moins une partie de la matière thermoplastique (34) étant au moins partiellement fondue pour circuler autour d'au moins un élément structurel de la pluralité d'éléments structurels de la membrane (16), avant d'être à nouveau solidifiée afin de fixer la première couche (16) à la seconde couche (32). La membrane (16) peut être oléophobe ou oléophile et comprend de préférence du polytétrafluoroéthylène expansé. La matière thermoplastique (32) peut être d'un type synthétique quelconque et peut être hydrophobe ou hydrophile.

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