Patents

Method for Providing a Laminate with a Hook and Loop Fastening Volume, and Resulting Laminate

U.S. Patent No. 12,295,823

Author Image

By: Tara Olivo

Associate Editor at Nonwovens Industry

Nathalie Moinard, Nantes, France; and Thierry Marche, La Chapelle Basse Mer, France.
Assigned to Aplix, Le Cellier, France.

Filed: 2/21/22
Issued: 5/13/25

A laminate comprising at least one support element in the form of a nonwoven fabric comprising at least a Spunbond layer having a lower face and an upper face, and at least one nonwoven fabric with loops made of a material comprising synthetic thermoplastic polymers, having a lower face and an upper face, wherein said upper face of the at least one support element in the form of a nonwoven fabric is secured to said lower face of the nonwoven fabric with loops, said at least one nonwoven fabric with loops is a product obtained at the end of the formation of a strip of fibers and/or filaments which have been consolidated, said nonwoven fabrics with loops comprising fibers and/or filaments and connections between the fibers and/or the filaments made directly by welding or indirectly by means of a layer of adhesive or a layer of binder, wherein the curve representing the force required to stretch the laminate along a given axis of the laminate, as a function of elongation, comprises a segment in which, starting from a zero elongation value, the force increases from zero up to a maximum force, wherein said maximum force corresponds to the rupture of the laminate, and the curve comprises an inflection point (Pi) on said segment, wherein a top of a zone forming loops or a middle(S) of a top part, wherein the top part is a flattened top, is offset in a machine direction, with respect to a central point (P0) equidistant from the two successive connection zones between which the zone forming loops extends.

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