Method of producing a stretch laminate

B - Operations – Transporting – 32 – B

Patent

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B32B 5/04 (2006.01) B32B 37/12 (2006.01)

Patent

CA 2631235

A method of producing a stretch laminate exhibiting reduced defects from a mechanical activation process can include providing a nipping member. The nipping member can have a first nip region and a non-nip region adjacent to the first nip region. A first substrate and an elastic element are provided to the nipping member. The first substrate and the elastic element are joined in a face to face relationship with adhesive therebetween, thereby creating an intermediate laminate. The intermediate laminate has a first tack down region and an activation region adjacent the first tack down region. A portion of the first tack down region passes through the first nip region, and a portion of the activation region passes through the non-nip region of the nipping member. The activation region of the intermediate laminate is mechanically activated, thereby creating the stretch laminate.

L'invention concerne un procédé de production d'un laminé comportant un minimum de défauts, suivant un processus d'activation mécanique, ledit procédé prévoyant l'utilisation d'un organe de serrage. L'organe de serrage peut présenter une première zone de pression et une zone dépourvue de pression, adjacente à la première zone de pression. Un premier substrat et un élément élastique sont prévus sur l'organe de serrage. Le premier substrat et l'élément élastique sont assemblés entre eux, face à face, au moyen d'un adhésif, générant ainsi un laminé intermédiaire. Le laminé intermédiaire présente une première zone d'adhérence et une zone d'activation adjacente à ladite première zone d'adhérence. Une portion de la première zone d'adhérence se déplace à travers la première zone de pression, et une portion de la zone d'activation se déplace à travers la zone dépourvue de pression de l'organe de serrage. La zone d'activation du laminé intermédiaire est activée mécaniquement, ce qui a pour effet de générer le laminé extensible.

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