A retaining device with hooks, comprising a base extending in a longitudinal direction and presenting a top face and a bottom face; and a plurality of retaining elements extending from the top face of the base, each retaining element being formed by a stem and a head; the device being characterized in that: the base presents a thickness lying in the range 10 ?m to 700 ?m, where the thickness is the distance between the top face and the bottom face; and the base has two edges in the longitudinal direction, each of said edges presents highs and lows.

The present invention relates to a method for manufacturing an optical sheet module, and the method comprises: a first pattern formation step of coating a top surface of a first base film with a liquid-state source material so as to form a first structured pattern; a provisional pattern curing step of semi-curing the first structured pattern while maintaining its shape; an adhesive layer coating step of coating a surface of a second base film with an adhesive layer; a provisional adhesive layer curing step of semi-curing the adhesive layer coated on the second base film; an adhesion step of adhering at least a part of the first structured pattern of the first base film to a bottom surface of the second base film; and a main curing step of curing the first structured pattern while the first base film and the second base film are adhered.

A method for assembling an assembly comprising a tape (100) of retaining elements and a substrate (200), said method comprising the following steps: a step of forming a tape of retaining elements by dispensing a molding material into a molding device (1), so as to form a tape (100) of retaining elements comprising a base (51) presenting a bottom face (511) and a top face (512), the top face (511) of the base (51) being provided with retaining elements; and a step of applying a substrate (200) against the bottom face (511) of the base (51) prior to said bottom face (512) of the base (51) solidifying in such a manner as to cause the substrate (200) to penetrate at least in part beyond a plane defined by the bottom face (511) of the base (51) of the tape (100).

A retaining device (300), comprising: an elastic film (310) extending in a longitudinal direction; and a plastics tape (100) extending in the longitudinal direction comprising a base (51) presenting a bottom face (512) and a top face (511) and including a plurality of retaining elements extending from said top face (511); the device being characterized in that the film (310), the base (51), and the retaining elements are formed integrally by means of extrusion.

A method of forming a retaining device with hooks, wherein: a molding strip is provided that presents an inside face and an outside face, and that has a plurality of cavities, each cavity defining a stem extending from the outside face towards the inside face and including an end forming a head that extends from the stem towards the inside face of the molding strip; and the molding strip is positioned on rotary drive means, comprising at least two rollers, the inside face of the molding strip being arranged to bear against the drive means.

A retaining device, comprising: a base (51) extending in a longitudinal direction and presenting a top face (511) and a bottom face (512); and a plurality of retaining elements extending from the top face (511) of the base (51), each of the retaining elements being formed by a stem (52) surmounted by a head (53), the stem (52) having a bottom end (521) connected to the base (51), and a top end (522) opposite from the bottom end (521), the head (53) surmounting the top end (522) of the stem (52), and having a bottom face facing towards the base and a top face opposite from the bottom face.

A molding apparatus (10) for forming a retaining device. The molding apparatus (10) comprises a molding strip (12) and a molding support (24). The molding strip (12) has an inside face (14), an outside face (16), and a plurality of through cavities (18) extending from the outside face (16) to the inside face (14), the molding strip (12) extending in a longitudinal direction (X) and presenting both a transverse direction (Y) perpendicular to the longitudinal direction (X), and also a height direction (Z) perpendicular to the longitudinal direction (X) and to the transverse direction (Y). The inside face (14) is configured to press against a molding face (26) of the molding support (24), wherein the inside face (14) of the molding strip (12) and/or the molding face (26) of the molding support (24) includes an array of passages, the array of passages forming vents and connecting together the cavities (18) when the molding strip (12) is pressed against the molding support (24).

A method of making a laminated touch fastener includes introducing a flexible substrate to a resin applicator, applying flowable resin to a limited region of a surface of the substrate, and molding the applied resin to form a plurality of defined structures extending from a layer of the applied resin. The substrate surface, as the substrate is introduced to the resin applicator, has a surface characteristic that varies across the surface. The surface includes both a first region and a second region adjacent the first region, the surface characteristic varying to a greater degree within the second region than within the first region. The flowable resin may be applied within the first region such that an edge of the resin layer is disposed within, and adjacent an exposed portion of, the first region of the substrate surface.

Methods and systems for mechanically forming one or more surface protrusions integrally from a garment material, the one or more surface protrusions extending outwardly from a garment surface of the garment material, include placing at least one selected area of the garment surface against a first surface of a forming die having a plurality of openings which have a configuration and orientation corresponding with the configuration and orientation of the one or more surface protrusions of the garment material. The garment surface may be softened by application of a source of energy, wherein the source of energy comprises at least two sonotrodes mounted in a rotary drum. At least some of the softened garment surface is positioned into at least one opening of the plurality of openings.

A touch fastener product having a base sheet with a resin side surface and a male touch fastener element having a head disposed at a distal end of a resin stem and overhanging the base sheet. The head has an overall shape, as projected in a plane parallel to the base sheet, with a perimeter that defines spaced apart extremities corresponding to head sections of different engagement characteristics and disposed at different distances from a centroid of the overall shape. In one example, the head projection has a polygonal perimeter consisting of straight edges of differing lengths connected at radiused corners. In another, the perimeter comprises an unbroken series of at least three arc segments of different curvatures, with centers of the arc segments disposed at different distances from the centroid.