An active interlocking fastener system is adapted to control an interlock in response to an external stimulus. The interlocking fastener system includes a first element including a plurality of first interlocking fasteners. The interlocking fastener system also includes a second element including a plurality of second interlocking fasteners configured to couple to the first plurality of interlocking fasteners. The plurality of first interlocking fasteners or the plurality of second interlocking fasteners includes a reactive material configured to vary a mechanical engagement between the plurality of first interlocking fasteners and the plurality of second interlocking fasteners as a function of the external stimulus.

A three dimensional permeable thermoplastic tape useful for joining of layers of fiber tows (plies) together so as to form highly toughened resin infused structures. In one or more embodiments, the tape is manufactured using three dimensional printing and is applied between layers of fiber tows so as to tack the layers of fiber tows in place and prevent movement of the layers of fiber tows.

A closure device for connecting two parts includes a first closure part which includes a first surface with an arrangement of first structure elements arranged thereon and a second closure part which includes a second surface with an arrangement of second structure elements arranged thereon. The first closure part and the second closure part are to be positioned together in such a manner that the first surface of the first closure part faces the second surface of the second closure part such that the first structure elements and the second structure elements engage in one another in such a manner that movement of the closure parts relative to one another along a load direction is blocked.

A fastening device includes a first tape portion and a first fastening portion joined thereto, the first fastening portion defining a first side surface and a second side surface opposite thereto, the first fastening portion including a plurality of fastening elements extending from the first side surface, the plurality of fastening elements arranged lengthwise along a lengthwise direction of the fastening device, each adjacent pair of fastening elements offset by a pitch distance and defining a fastening gap therebetween, each of the plurality of fastening elements including an engagement portion extending in a direction parallel to the lengthwise direction, each of the plurality of fastening elements being asymmetric about a protrusional centerline of the fastening element, the fastening device being a first fastening device configured to be joined to a second fastening device comprising a second fastening portion having the same geometry as the first fastening portion.

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.

This manufacturing method of a molded surface fastener involves a primary molding step for forming a primary molded body and a secondary molding step for compressing a provisional element of the primary molded body while heating the same. A molding apparatus is provided with a mold member comprising multiple penetration holes and multiple concave portions, whereof each penetration hole communicates to at least one concave portion; in the primary molding step, the molding apparatus is used to form a primary molded body comprising a provisional element having a primary stem portion and a pawl portion is formed from the protruded portion by compressing the provisional element. By this means, it is possible to stably manufacture a molded surface fastener that has an engaging element comprising a pawl portion that projects from the outer peripheral edge of an engaging head portion.

Device for closing the opening of a sack, in particular a sack made of flexible material, including a first element with hooks and a second element with hooks, the hooks (9) of the two elements engaging into one another to achieve the closure of the opening, each element with hooks including a base strip (7, 8) and hooks coming from the strip.

A fastening device includes a first tape portion and a first fastening portion joined thereto, the first fastening portion defining a first side surface and a second side surface opposite thereto, the first fastening portion including a plurality of fastening elements extending from the first side surface, the plurality of fastening elements arranged lengthwise along a lengthwise direction of the fastening device, each adjacent pair of fastening elements offset by a pitch distance and defining a fastening gap therebetween, each of the plurality of fastening elements including an engagement portion extending in a direction parallel to the lengthwise direction, each of the plurality of fastening elements being asymmetric about a protrusional centerline of the fastening element, the fastening device being a first fastening device configured to be joined to a second fastening device comprising a second fastening portion having the same geometry as the first fastening portion.

In this molded surface fastener, plural engaging elements having a stem portion and an engaging head portion formed integrally on the stem portion are standing on the base portion, at least one pawl portion having a pawl width dimension narrower than a width dimension at a boundary between the stem portion and the engaging head portion is protruded on an outer peripheral edge part of the engaging head portion, and a back surface of pawl of the pawl portion is formed at different angles with respect to a back surface of head portion of the engaging head portion. Such a molded surface fastener of the present invention has a substantial engaging force with respect to a female surface fastener and can make a texture of its surface comfortable.

A system of attachment surface structures that find their best use in the form of repeatedly removable straps and bands for securing one object to another. The surfaces are preferably constructed of narrow sheets of flexible polymer plastic materials having generally high tensile strength. A first embodiment includes shaped parallel ridges on one surface that interlock with mating parallel ridges on an opposing surface. These parallel ridges may be double sided (interlocking on both sides of each shaped ridge with the next shaped ridge on either side) or single sided (interlocking with a single ridge oriented 180 degrees from the first). Further embodiments include an array of shaped posts of various regular geometric shapes that interlock with an opposing array of similar or distinct posts.