Patent ID: 11911242
Assignee: FAMECCANICA.DATA S.P.A.
Field: Surface technology, coating (Chemistry)
Classification: CPC A  B | IPC A  B

Claim 8:
9. A method for producing the continuous transversely extensible elastic laminate according to claim 1 comprising:
feeding two first continuous webs in a longitudinal direction, the two first continuous webs being spaced from each other in a transverse direction and having respective central portions and respective first and second edge portions on opposite sides of the respective central portions,
feeding two continuous elastic tapes in said longitudinal direction,
elastically stretching said two continuous elastic tapes in a direction transversal to said longitudinal direction, and applying said two continuous elastic tapes to respective central portions of said two first continuous webs while stretched in said transversal direction,
feeding in said longitudinal direction, a continuous support web having two continuous edge portions, the continuous support web having a row of micro-hook pads fixed to a planar surface of the support web, wherein said micro-hook pads are spaced apart from each other in said longitudinal direction,
applying said two continuous longitudinal edge portions of said support web to respective first edge portions of said two first continuous webs,
feeding two second continuous webs in said longitudinal direction, the two second continuous webs being spaced from each other in said transverse direction, and having respective central portions and respective first and second edge portions on opposite sides of the respective central portions,
applying said two second continuous webs to respective first continuous webs and sandwiching said two continuous elastic tapes between respective central portions of said first and second webs, and sandwiching said two continuous longitudinal edge portions of said support web between respective first edge portions of the two first and second continuous webs,
joining to each other said two first and second webs, said two elastic tapes and the edge portions of the support web by a pattern of spot welds while said two elastic tapes are stretched in said transversal direction,
cutting the support web along at least one continuous undulated cutting line passing between each pair of adjacent micro-hook pads so as to form two separate continuous transversely extensible elastic laminates, wherein the at least one cutting line is distanced from the edges of the micro-hook pads, so that each micro-hook pad is completely surrounded by a portion of said planar surface of said support web.