Provided is a molding hook and loop fastener, in which a barrier erected near left and right side edges of a substrate includes at least two rows of vertical wall arrays, and the vertical wall array positioned on the outermost side includes a plurality of gaps provided at a predetermined pitch in a length direction. At least two of the gaps are provided on the vertical wall array positioned on the outermost side with respect to a region between the engaging elements adjacent in the length direction of the substrate. Due to this, in the molding hook and loop fastener, an outer side and an inner side of the barrier can be divided by the vertical wall array, and flexibility of the molding hook and loop fastener can be improved.

One aspect of the present invention provides an injection molded mushroom type hook structure. The injection molded mushroom type hook structure of the present invention includes a stem portion and a substantially planar head portion formed at a top end of the stem portion, wherein the head portion includes two protrusion portions extending outwardly at two opposite sides of the head portion in a first direction, at least one extended portions extending outwardly from one side of the head portion in a second direction substantially perpendicular to the protrusions, and four connection portions that are formed at locations where the lateral sides of the two protrusion portions meet adjacent extended portion and the head portion. These structural features allow the injection molded mushroom type hook structure of the present invention to have a substantially same hook-to-loop engagement rate in each direction and an improved hook-to-loop engagement/peeling-off strength. Another aspect of the present invention provides an injection molded hook strap including the hook structure.

A closure comprising: a first surface having a plurality of first projections extending outwardly from said first surface and terminating at a distal end to present a plurality of first heads respectively; a second surface having a plurality of second projections extending outwardly from said second surface and terminating at a distal end to present a plurality of second heads respectively; said plurality of first heads different from said plurality of second heads; whereby the space between adjacent first upstanding projections define a first cavity to capture said second heads of said second surface; and wherein the space between adjacent second upstanding projections to define a second cavity to capture said first heads of said first surface.

A connection system has a first adhesion segment, on which a first connection region is formed, a second adhesion segment, on which a second connection region is formed, and a solidifiable liquid connection substance for connecting the two adhesion segments in a material fit, wherein at least one of the two connection regions is formed flexibly, such that, when the liquid connection substance is introduced between the two connection regions which are opposite one another in an assembly arrangement of the two adhesion segments, a material connection is formed between the two connection regions automatically as a result of the elastocapillary effect via the liquid connection substance.

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; the molding strip is positioned on rotary drive means, the inside face of the molding strip being arranged to bear against the drive means; and molding material is dispensed against the outside face of the molding strip.

A molded surface fastener, in which many magnetic particles can be contained in a closer part with respect to a magnet of a molding die, and further a front surface and a rear surface can be easily identified, is provided. In the molded surface fastener of the invention, a magnetic region containing magnetic particles is formed on at least a part between right and left resin intrusion barrier portions, and a magnetic raised portion which is lower than engaging elements and contains the magnetic particles therein is disposed between the engaging elements adjacent in a length direction within the magnetic region.

A method for producing a plastic product including a support (30) having protruding stem parts (36) having at their free ends head parts (38) with a wider diameter compared with the stem parts (36). The stem parts and the head parts are formed in cavities (16) of a moulding screen (12) that are formed, on their sides facing away from the support (30) in a shaping zone of the moulding screen (12). The shaping zone is sealed off from the environment by a counter-face (20) such that a predefinable amount of air enclosed in the shaping zone exerts a counter-pressure on the plastic material introduced into the respective cavity (16) of the shaping zone to support the shaping process.

A method of making a structured surface is disclosed. The method includes providing a thermoplastic backing with multiple rows of upstanding elements. The upstanding elements include stems with proximal ends attached to the thermoplastic backing and distal caps, and each distal cap has an overhanging portion that extends beyond the stem in a first direction. For at least some of the multiple rows, an implement is passed between two adjacent rows, wherein the implement contacts the overhanging portion of at least some of the distal caps in the two adjacent rows such that at least part of the overhanging portion is turned in a second direction, different from the first direction. A structured surface that can be prepared by the method is also provided along with a fastening laminate that includes a carrier and the structured surface and an absorbent article that includes the fastening laminate. A tool useful for carrying out the method is also provided.

Provided is a molding hook and loop fastener, in which a barrier erected near left and right side edges of a substrate includes at least two rows of vertical wall arrays, and the vertical wall array positioned on the outermost side includes a plurality of gaps provided at a predetermined pitch in a length direction. At least two of the gaps are provided on the vertical wall array positioned on the outermost side with respect to a region between the engaging elements adjacent in the length direction of the substrate. Due to this, in the molding hook and loop fastener, an outer side and an inner side of the barrier can be divided by the vertical wall array, and flexibility of the molding hook and loop fastener can be improved.

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).