Thermal impulse bonding of thermally sensitive laminate...

Details Thermal impulse bonding of thermally sensitive laminate... Thermal impulse bonding of thermally sensitive laminate...

A - Human Necessities

41

D

A41D 13/12 (2006.01) A41D 27/24 (2006.01)

Patent

CA 2661816

Thermal impulse heat welding, or "bar sealing", is used to bond thermally sensitive laminate barrier materials such that they will pass AAMI level 4 testing (ASTM 1670 and 1671 -b). In bar sealing, overlapping layers of thermally sensitive laminate barrier materials are melted and fused together to create a substantially solid bond at and/or adjacent the surface. No substantially un-melted areas remain within the fused bond area on the surface.

Selon l'invention, le soudage par impulsions thermiques ou 'soudage avec barrette chauffée' permet de souder des matériaux barrières stratifiés thermosensibles de sorte qu'ils obtiennent des résultats positifs à l'essai AAMI de niveau 4 (ASTM 1670 et 1671 -b). Dans le soudage avec barrette chauffée, des couches se chevauchant de matériaux barrières stratifiés thermosensibles sont fondues et fusionnées pour former une soudure sensiblement solide au niveau de la surface et/ou adjacente à celle-ci. Il ne reste aucune partie sensiblement non fondue dans la zone de soudure fusionnée de la surface.

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