The present disclosure relates to a monobloc tool for the production of laminated molded parts. The tool includes an effective surface area facing the molded part to be laminated, a usable surface area facing a tool holder for securing the tool 1, at least one fluid duct 4 passing through without kinks and arranged in the interior near the face of the effective surface area, and at least one cavity arranged between the fluid duct and the usable surface area.

Methods and compositions are described for producing high-performance materials. These materials utilize layers of stacked tapes wherein the tapes in any given layer are offset by between 0.1 degrees and 45 degrees from tapes of adjacent layers. At least three roughly parallel tapes are included within each layer of tapes, and the tapes have an aspect ratio of at least 20. The maximum thickness of a tape within a given layer is 5 mm. The resulting materials have significantly improved strength and/or toughness. The compositions can be used as stand-alone materials or combined with other materials to form tape-reinforced composites.

Methods and devices for bonding a plurality of substrates in a nip provided between an anvil and a bonding device may involve preheating a portion of a first substrate for a preheating duration to impart a preheated temperature, and then conveying the plurality of substrates to the nip to form a bond. The portion of the first substrate may reach the nip at a final temperature that is within 0 C. to 40 C. of the preheated temperature. A time-in-nip to create the bond may be less than 20 milliseconds. The preheating duration may be at least 200% longer than the time-in-nip. Laminate materials formed via such methods and devices may include unbonded areas in the nonwoven material that may have at least 5 fibers per square inch that are fused at fiber-to-fiber intersections caused by preheating the nonwoven material.

A polyimide film bonding method according to an embodiment may include: bonding two polyimide films to each other by bringing a hot plate into contact with a portion where the two polyimide films are superposed. A heating temperature by the contact with the hot plate is 450 C. or higher. A contact time between the polyimide films and the hot plate is 12 seconds or less. A polyimide film bonding method according to another embodiment may include: bonding two polyimide films to each other by irradiating, with a laser beam, a portion where the two polyimide films are superposed. A top surface of the superposed polyimide films is irradiated with the laser beam while a bottom surface of the superposed polyimide films is kept tightly attached to a heat insulator.

A stitched multi-layer fabric including an interior layer, a batting layer disposed over the interior layer, the batting layer configured to provide insulation, a barrier layer disposed over the batting layer, the barrier layer configured to inhibit fluid flow, a yarn stitched through and securing together the interior layer, the batting layer, and the barrier layer, the yarn forming stitch holes in the barrier layer, and a face layer disposed over the barrier layer, a melted portion of the barrier layer bonding the face layer and the barrier layer together and filling a portion of the stitch holes in the barrier layer.

A particle micro/nanoparticle filled paste is employed to create an absorbing/sintering interlayer for a bonding process which avoids the need to grind/polish large substrates and eliminates the need for more expensive sputtering process.

A stitched multi-layer fabric including a face layer, a barrier layer disposed over the face layer, where the barrier layer is configured to inhibit fluid flow, a batting layer disposed over the barrier layer, a first yarn disposed over the batting layer, and a second yarn securing the first yarn to the batting layer, securing the face layer, the barrier layer, and the batting layer together, and forming stitch holes in the barrier layer. A melted portion of the barrier layer fills a portion of the stitch holes in the barrier layer.

An apparatus for joining substrate portions includes substrate portions being positioned such that the substrate portions overlap at an overlap area. The substrate portions each have a melting temperature and an outer surface. A fluid is heated to a temperature sufficient to at least partially melt the substrate portions. A jet of the heated fluid is directed from a fluid orifice onto the substrate portions at the overlap area. The heated fluid penetrates at least one of the outer surfaces of the substrate portions. The substrate portions are at least partially melted using the heated fluid. The substrate portions are compressed using a pressure applying surface adjacent the fluid orifice to join the substrate portions together at the overlap area.

The invention relates to a method for connecting sheet metal parts (4) to form a laminated core (11), wherein sheet metal parts (4) are separated, in particular punched, from a sheet metal strip (2) that has, at least in some areas, a layer having curable polymer adhesive (12), and the sheet metal parts (4) are preliminarily connected to form a laminated core (11), the preliminary connection comprising plasticizing the adhesive (12) at least in some areas and joining the sheet metal parts (4) in order to connect the sheet metal parts by means of the plasticized adhesive (12) of at least one of the sheet metal parts (4), and in a subsequent step the laminated core (11) having preliminarily connected sheet metal parts (4) is subjected to a curing of the adhesive (12). In order to create an advantageous connection between the sheet metal parts, the plasticizing of the adhesive (12) comprises the introduction of a softener (16), in particular H.sub.2O.

A multilayer strip intended to be wound on a form, includes pre-impregnated fiber layers superimposed along a stacking direction, each layer extending widthwise along a transverse direction perpendicular to the stacking direction between a first and a second edge, wherein on at least a portion of the multilayer strip the first edges of the pre-impregnated fiber layers are aligned with each other in the stacking direction, and each second edge is recessed relative to the second edge of the underlying layer in the transverse direction.