Abstract: An apparatus for bonding paper or foil webs to substrate surfaces. In particular, the apparatus is to be used for applying wall-paper of the type which is provided with an adhesive backing material consisting, for example, of polyvinyl acetate. In use, the apparatus is pressed against the positioned wall-paper and is moved over it. It includes a heater which softens the adhesive material, a roller or resilient strip which presses the wall-paper against the substrate surface and a cooler which cools and solidifies the adhesive backing material.

Abstract: A device for heat bonding thermoplastic materials. At least one pressure chamber having a diaphragm is spaced from a supporting surface with the diaphragm and supporting surface in opposing relation to each other. Materials to be bonded are positioned between the pressure chamber diaphragm and supporting surface and the pressure in the chamber is raised above ambient pressure causing a deflection of the diaphragm. The amount of diaphragm deflection increases with the distance from the pressure chamber side wall. Either the supporting surface or the pressure chamber, or both, is moved toward the other causing a contact between the deflected diaphragm, supporting surface and the materials to be bonded. As the relative movement continues, the contact area with the materials to be bonded increases thereby progressively expelling air trapped between the materials.

Abstract: This application discloses methods reflected in specialized apparatus for application of a flocked covering to the receptive surface of a formed base, such as that of a thermoplastic film concatenate with its extrusion, to produce a flocked composite web. A vacuous foraminous conveyance provides positive means for transferring flock to the base and influencing the depth of embedment.

Abstract: A cutter for a non-woven carpet machine in the form of a continuous belt or band which is tensioned and moves continuously in one direction against advancing yarn strands. A sharpening mechanism can be provided to sharpen the blade while it is moving and without stopping the carpet making machine by moving the blade against the sharpening mechanism. A cooling unit can be provided for circulating cooling air against the carpet backing layers to harden adhesive in which the yarn is embedded.

Abstract: Apparatus for binding linear polyethylene covered books using a source of infrared heat energy applied externally at the backbone of a polyethylene cover to reactivate the hot melt adhesive on the cover.

Abstract: A process for manufacturing impermeable strips formed by a plurality of layers in a continuous process wherein at least two single or compound flexible plastic layers e.g. polyethylene or thin webs are made to pass under pressure through the nip between two rollers rotating in opposite directions, the bonding material between the layers being asphalt, or an asphalt mixture, in fluid state distributed uniformly between the plastic surfaces to be joined, the heat of the fluid asphalt being prevented from deteriorating the plastic webs by their being cooled with the application of a water film to the respective surface of each plastic web opposite to the asphalt contacting surfaces.

Abstract: A welding jaw for thermoplastics material comprises a cooled carrier with two parallel heating elements on one surface. At least part of the surface of the carrier is so spaced from the surfaces of the elements that on welding, material flows from under the element to be cooled and hardened on contacting the surface part. Thus allows rapid firm welding and is particularly useful in transverse welding of liquid filled tubes.

Abstract: A method and mechanism for continuously making a plastic film with shaped profiles on the surface including extruding a continuous length of interlocking profiles from a die shaped with a precise shape for interlockingly engaging with another profile and directing a flow of coolant on the profile from a stationary coolant means and adjusting the direction of flow of coolant relative to the direction of movement of the profile or controlling the pressure and temperature of the flow of coolant to control the cooling rate and the shape of the profile.

Abstract: A manually operable combination strapping tool for applying plastic strapping around an object includes a strap-tensioning and gripping mechanism for holding the strap in a tensioned loop around the object with the supply portion of the strap overlapping the leading end thereof, and a heat sealing mechanism which comprises a cam shaft adapted for camming engagement with a movable pressure block and with a rocker arm which is in turn releasably coupled to a movable heater. As the cam shaft is rotated, the rocker arm moves the heater between the overlapping strap portions and the pressure block is moved to press together the heating element and strap portions for melting thereof. Further rotation of the cam shaft disengages it from the pressure block and decouples the rocker arm from the heater to permit retraction of the pressure block and the heater by separate bias means.

Abstract: Apparatus and process for manufacturing non-woven textile pile fabric from a plurality of pile-forming strands having thermoplastic characteristics, as follows. A hollow strand extruder receives parallel textile strands therein extending longitudinally therethrough and shapes the strands into a continuous mass of a predetermined configuration for withdrawal therefrom. A plurality of relatively thin spaced-apart successive compartment devices are positioned generally in axial alignment with the extruder and define successive spaced-apart open-sided interior areas of the same general configuration of the shaped mass of strands and collectively define a longitudinally-extending passageway for receiving and holding the continuous mass of strands therein after withdrawal from the extruder.

Abstract: A method and apparatus for insulating a plurality of electrically conductive elements and to produce electrical cable where the method includes heating the unformed insulative material and conductive elements, applying pressure and simultaneously removing heat with a pair of rollers at a relatively low temperature and applying pressure and heat to preselected regions only of the insulative material. The method and apparatus further allow preselected portions of the cable to be unbonded so as to facilitate access to the conductive elements by simply interrupting the application of pressure to the preselected portions. The heat, press and cool and press and bond method may also be accomplished in a step and repeat process using presses to insulative flexible circuits. The above method and apparatus provide more reliable bonding at an accelerated rate of production.

Abstract: An apparatus for and method of forming a backing of plastic material at the rear edge of a cutting blade in which the edge is firmly imbedded by passing a conveyor on which the blades are arranged seriatim through an extrusion die the conveyor having feed lugs engaging the ends of the blades adapted also to maintain an accurate lateral position of the blades on the conveyor through the die, and continuing the advance through a cooling means and then through a cutting mechanism which severs the strip into individual blade units.

Abstract: A method and apparatus for sealing packages, e.g., microelectronics packages containing heat sensitive elements, by applying heat to melt solder on the peripheries thereof. At the same time heat is being applied to a package heat sinks are simultaneously engaged with the top and bottom portions thereof to carry off excess heat and thus protect the heat sensitive elements from damage.

Abstract: The method of adhering a preformed continuous film of fluorcarbon plastic material to a flat or convex metal surface which comprises heating both the metal surface and a layer of the plastic material superposed upon the metal surface in a gaseous environment of reduce pressure sufficiently to soften the plastic film and bond the same to the metal surface employing multiple steps of heating, bonding and cooling without application of increased pressure to the outer surface of the heated plastic film to form a bonded metal-plastic combination without entrapment of gas. The invention is particularly adapted to the bonding of fluorocarbon plastic material to surfaces of metal such as aluminum, iron, iron alloys, copper, and copper alloys.

Abstract: Apparatus for the continuous production of chipboard, fibreboard or like panels, comprising a tensioned endless steel belt guided over a plurality of rollers and partially around a heated revolvable press drum such that said rollers press the belt against said drum, sprinkler apparatus disposed over a portion of the belt which extends horizontally before said drum in the direction of movement of the belt such that material to form said panels sprinkled onto said portion of the belt is pressed between the belt and the drum to form a web of material, wherein at least one of said plurality of rollers has over its width a convexly ground surface, whereby panels produced on the apparatus can have substantially uniform thickness and weight.

Abstract: A mechanism for attaching to a laminated plastic sheet a fastener profile wherein the preformed sheet is removed from a roll and passed through a heating chamber having controlled humidity and thereafter passing said sheet over a roll which forms a joining zone with an extruded plastic profile strip fed onto the sheet with a jet of air directed thereagainst, and the joined sheet and strip thereafter passing through a chamber where the strip is cooled and the heat in the sheet is maintained.