Abstract: An arrangement for manufacturing complex structures by transferring heat and pressure from ceramic molds to the article to be molded. The arrangement comprises a combination of ceramic molds, a flexible pressure bag means for applying pressure to at least one of the ceramic molds and a flexible pressure heating blanket means to apply pressure and heat against at least one of the ceramic molds.

Abstract: Disclosed is a protective patch for biaxially a heat shrinkable, thermoplastic vacuum bag for protecting the bag from puncture by sharp protruding bones in bone-in cuts of meat which are vacuum packaged within the bags. The patch is made from multi-layer film and preferably comprises outer layers of a blend of linear low density polyethylene and ethylene vinyl acetate copolymer and inner layers of ethylene vinyl acetate copolymer. The patch is heat shrinkable with the bag. A method of making the patch is also disclosed.

Abstract: The flat drive belt has a layered build-up comprising at least one tensile layer (1) which has a modulus of elasticity of 20,000-250,000 N/mm.sup.2 and which is positively embedded between two thermoplastic hot-melt films (3) having a modulus of elasticity of 40-600 N/mm.sup.2. Friction layers or friction structures (4) of an elastomer material having a modulus of elasticity of 2-40 N/mm.sup.2 are built up on the hot-melt films (3).The individual layers of the flat drive belt can be produced with high precision and, as a composite, form a sheet-like structure which is very regular with respect to thickness and weight per unit area. The starting material, produced as meter ware, for the flat drive belt can be cut without effort by the user from rolls and can be joined under the action of pressure and heat into a continuous form, without thickenings and joint gaps, in the way required for the kinematic behavior of fast-running drive belts.

Abstract: A machine for gas-free sealing/welding of overlapping edges of thermoplastic material is provided and is of the type which includes a framework carrying an ultrasonic transducer horn assembly having a hammer at a lower end thereof. An anvil is positioned below the hammer. A mounting mechanism for mounting the framework for side-to-side movement, and a drive mechanism for moving the framework on the mounting mechanism are also provided. The improvement resides in the mounting mechanism comprising a beam which extends between spaced apart support members and which has at least one upper rail edge and one lower rail edge and wheels rotatably mounted to the framework and including at least one upper wheel and at least one lower wheel which engage, respectively, the upper and lower edges.

Abstract: A process for producing molds, models and tools from hard gypsum and/or cement including applying at least one base layer composed of a binder to a model from which a mold is to be made and which has been provided with an unmolding agent, and pressing onto this base layer a glass fiber reinforced molding composition composed of 95 to 0 weight % .alpha.-calcium sulfate hemihydrate, 0 to 95 weight % cement, 0.5 to 8 weight % glass fibers and 0.5 to 4 weight % suspension agent, with reference to the dry weight, as well as water in a wet-on-wet process and unmolding the resulting laminate after it has set.

Abstract: A method for making weather strips in which a polyurethane film is positioned along an anvil having longitudinal parallel spaced anvil surfaces and recesses therebetween with elongate channel-like portions of the film in the recesses. Resiliently compressible polyurethane foam is pressed against the polyurethane film along the anvil so that the foam is compressed against the anvil surfaces and extends into the channel-like portions of the film in the recesses. The compressed foam and film along the spaced anvil surfaces are then sonically welded to fuse the foam together in its compressed state and fuse the compressed foam to the film, and the fused foam and film are slit along the anvil surfaces to form separate weather strips.

Abstract: Sealing device suitable for sealing bagging material containing, for example, produce, such as meat or poultry, to form a produce-containing bag having a seal at one or both ends, and being particularly adapted for cooking or defrosting the produce in a microwave oven. The device includes an ultrasonic sealing horn having a sealing surface, and a guide associated with the sealing horn for guiding material to be sealed into contact with the sealing horn. An anvil is provided for clamping the material against the sealing horn to facilitate the formation of a seal nugget upon actuation of the sealing horn. A bag clamp is pivotably mounted to the guide, and includes first and second spaced-apart arms.

Abstract: A stack of interlocked detachable bags, preferably formed from a thermoplastic foil strip, and each comprising two walls, a front wall and a back wall, preferably at least one handle-shaped incision positioned on one of said walls adjacent an upper filling opening, wherein the individual bags each have an interlock piece and are attached together with the aid of at least one interlock means engaging their interlock pieces, and by means of a row of perforations forming an edge of the interlock piece the individual bags are detachable from the interlocked stack by tearing off. On one of the walls of each bag adjacent an upper filling opening edge of that bag a reinforcing piece, preferably of plastic foil, with the interlock piece is attached so that the interlock piece protrudes above the filling opening edge. Advantageously the inside of the back wall is provided with the protruding interlock and reinforcing pieces.

Abstract: Shrinking of partially cured or B-staged resin coated fabric, also known as prepreg, during C-staging or full curing is reduced by cutting at least a plurality of the warp of the fabric in at least one location before C-staging. Prepreg is useful in the computer industry in the manufacture of printed circuit boards.

Abstract: A tape having a series of surface-type fastener pieces is manufactured by intermittently feeding a surface-type fastener tape blank composed of a release sheet of paper and a surface-type fastener of synthetic resin attached by an adhesive layer to the release sheet and comprising a base strip and a plurality of fastening elements, and fusing the surface-type fastener in a predetermined pattern by ultrasonic or high-frequency welding to produce gaps which define a series of surface-type fastener pieces on the release sheet. The release sheet with the series of surface-type fastener pieces attached thereto by the adhesive layer is then separated from a scrap composed of a surface-type fastener web from which the surface-type fastener pieces have been blanked out. Each of the surface-type fastener pieces is fused along its peripheral edge to prevent the fastening elements thereon from unraveling.

Abstract: A spacer (55) on a device for connecting two glass plates (31, 32) to form an edge-bonded insulating-glass pane by injecting a strand (67) of an initially pasty and subsequently solidifying material, adhering to the two glass plates (31, 32), over the entire periphery along the edge of the pane into the gap between the two glass plates held at a distance from one another is described. The spacer (55) has two rollers (70, 71) which are arranged next to one another with axes of rotation parallel to one another and to the pane running plane (10) and at right angles to the determined direction (III) of the relative movement between the nozzle (36) and the glass plates (31, 32) and of which one (70) is intended to rest against the inner surface of one glass plate (32) and the other (71) is intended to rest against the inner surface of the other glass plate (31).

Abstract: An apparatus for automatically severing and joining a joint piece includes feed rollers for feeding a first elongate product along a substantially horizontal path, a feed gripper for feeding a second elongate product along an inclined path extending obliquely to the horizontal path, and a movable cutter movable for transversely cutting off the first elongate product on a first fixed cutter into a product length and then for obliquely cutting off the second elongate product on a second fixed cutter into a joint piece. The movable cutter has a slanted surface for carrying a trailing end of the product length thereon with the joint piece partly overlapping the trailing end. Overlapping portions of the joint piece and the product length are joined to each other into a product with the joint piece having a free end exposed beyond the trailing end.

Abstract: A process for laminating discrete sections of a supported photosensitive layer onto a continuing series of sheet substrates. Each substrate is advanced to and through the nip of heated application rolls, and a continuous length of the supported photosensitive layer is also supplied to the nip. When the substrate reaches a first location positioned between the application rolls, all movement ceases except that the rolls move from an inactive disengaged position toward the substrate to an active position to cause pressure contact between the photosensitive layer and the substrate to thereby laminate the photosensitive layer to the substrate. There is a pause for a predetermined period of time with the rolls in the active positions before the substrate is again advanced with the rolls still in the active positions and the photosensitive layer again supplied to the nip.

Abstract: This disclosure relates to a method of manufacturing a sign or similar article by providing a wooden substrate having an upper surface; providing a laminate formed by several plies including a ply of sandblast-resistant material, an adhesive, a ply of vinyl, another adhesive and a carrier ply; cutting the laminate to form a template of a desired configuration and applying the template to the upper surface of the substrate, sandblasting the upper surface of the substrate which removes an upper surface strata thereof which is exposed to the sandblast material while unexposed surface strata is uneffected, and thereafter removing the sandblast-resistant ply from the vinyl ply forms a permanent upper covering/indicia/design atop the selected area of the substrate unaffected by the sandblast material.

Abstract: A hydraulic unit for a waterbed mattress is provided, along with a method for constructing the unit. The usual lower sheet having a plurality of chambers is covered with the usual upper sheet, and the fibrous bat is placed over the upper sheet. The assembly can be welded together, and plastic from the lower and upper sheets encases the fibrous bat to hold the bat to the hydraulic unit. The upper sheet, which is normally thin, should have about the same thickness as the lower sheet to prevent degradation. Otherwise, the upper sheet can remain thin, and a porous sheet is interposed, so the plastic from the lower and upper sheets flows through the porous sheet and encases the fibrous bat without degrading the thin upper sheet.

Abstract: A method of manufacturing structural elements from decorative laminated molding materials includes forming a core from an inner layer and an outer layer, placing a decorative layer on the core, pressing the core and the decorative layer together, forming at least one recess in the outer layer, and deforming the structural element along the at least one recess after pressing.