Abstract: This invention relates to a fabric made from a polymer or of a miXture of polymers having an absorption curve of radiating energy characterized by a minimum absorption between 3,200 A and 4,000 A and an important filtering below 3,200 A, said polymer being eXtruded at a speed allowing an eXtremely quick cooling such that the formation of large crystallites is inhibited while promoting proliferation of crystallites of very small sizes.

Abstract: A thermoplastic control complex for releasably securably bonding and debonding distinct elements together is provided. An elongated exothermic electrical conductor having a predetermined resistivity for each lengthwise unit thereof is provided with a thermoplastic resin selectively positioned along the length thereof. The complex is disposable between two distinct elements so that the thermoplastic resin is selectively transformed from a non-sticky substantially solid state to a substantially liquid state in response to a current being flowed through the exothermic conductor, whereby the thermoplastic resin, in the liquid state, effects wetting of the distinct elements for effecting subsequent releasable securable bonding of the elements together.

Abstract: Heat sealing apparatus is provided in which a heat seal head defines longitudinal slots which underlie a wire heating element and communicate with a cooling fluid path to provide rapid cooling to the heating element. The longitudinal slots have a width that is narrower than the width of the wire to provide wall supports on opposite sides of the wire.

Abstract: The invention relates to friction discs of the progressive engagement type, especially for clutches of heavy automobile vehicles, the disc comprising two annular friction linings extending respectively on both sides of and in contact with a cut-out corrugated support, each lining being fixed individually by continuous glueing zones on this support, along parts of the corrugations of the support which are in contact with the lining. The surface area of the glueing zones should be between 5 and 35%, and preferably about 10% of the surface area of the lining. In a modification, each lining is fixed on the support, not only by the glueing zones but also by at least one rivet per zone arranged at right angles to each glueing zone. The riveting operation is preferably carried out after glueing and before the adhesive is polymerized or set.

Abstract: Tread plates on mutually opposed endless belts clamp and move a pack of boards horizontally lengthwise between electrodes for setting adhesive between the boards by dielectric heating. The tread plates are engaged by backing members spaced transversely of the length of the belt, and the tread plates are connected by a chain located between the backing members. The portions of the tread plates engageable with a surface of the board pack are of a suitable plastic to deter passage of radio-frequency energy from an electrode to an electrically-grounded portion of a tread plate or to the chain. Air bags are inflatable to press at least one endless belt against the board pack or to move such belt relative to supporting means away from the board pack. Adjusting means for prepressing rollers ahead of the endless tread belts on one side of the board pack and adjusting means for the endless tread belt on the same side of the board pack are interconnected for synchronized adjustment.

Abstract: The disclosure herein is concerned with critical electron-beam radiation parameters and beam-passage rates and adjustments that have been found to enable high-speed curing of adhesives used to bond flock and similar materials to heat-sensitive substrates that otherwise inherently limit the degree of thermal curing that may be employed as by other means, and consequently limit the speed of curing.

Abstract: A nut retaining formation is made in the wall of a thermoplastic (metal or plastic) article, such as the flange of a floor drain fitting, by a one step die forming operation. The formation has a cavity in the intermediate thickness of the flange, the height of the cavity being such that a screw threaded apertured nut is a close sliding fit therein. A runway formation provides access to the cavity from the top surface of the flange at one side thereof, the nut being slidable down the runway into the cavity. An aperture through the top surface provides access for a screw to be inserted into the cavity to engage a nut positioned therein. The top and bottom walls of the cavity are formed by discontinuous nut retaining formations in the top part and bottom part of the wall thickness, surrounding the screw receiving aperture.

Abstract: An automatic laminating machine is provided for use with pre-fabricated laminating packets having a tear-off tab with a plurality of notches thereon. The machine is substantially automatic in its operation and can be easily operated by an inexperienced operator. The machine requires no warm-up time and heats up in only 10 seconds each time a packet is inserted. The machine will not operate unless it is used with a laminating packet with a pull tab of proper configuration which not only energizes the machine but also aligns the packet within the machine.

Abstract: A process for producing a microporous sheet comprising peeling off a microporous sheet of a resin bonded to a plate from the plate in such a manner that the microporous sheet is split into two sheets.

Abstract: A tape dispenser for applying paper lined electrically conductive pressure sensitive adhesive tape or foil on a flat surface for forming a part of an electrical alarm system. The dispenser includes a housing having a tape storage chamber in which is rotatably mounted a roll of paper lined pressure sensitive adhesive foil. The housing has an extension on the front side thereof through which the tape is dispensed. A pressure member is mounted on the housing extension over the point at which the tape is discharged from the housing extension, for use in pressing the tape on a flat surface as it is discharged from the dispenser. The dispenser includes means for stripping the paper liner from the foil as the foil is fed from the roll in the dispenser.

Abstract: At least one thermoplastic sheet is interposed between a pair of transparent thermoplastic cover sheets with a photograph interposed between the cover sheet and the thermoplastic sheet. The sheet assembly together with the photograph is pressed between a pair of flat electrodes of a high-frequency dielectric heating device. Then, the assembly is subjected to high-frequency dielectric heating.

Abstract: A laminator system for the continuous treatment and lamination of a plurality of flexible webs, with the system including the conventional adhesive applicator stations and laminator stations, with a drying chamber being arranged to dry or otherwise condition the applied adhesive films. The drying chamber is an annular enclosure having a generally inverted "U" configuration with access openings being formed at the base of each of the upright legs. Guide rolls are provided for creating a plurality of web paths through the laminator system, with the web paths including a plurality of generally parallel and concentric spans extending through the drying chamber. In addition to size reduction considerations, the drying chamber provides enhanced versatility for the laminator assembly, and simplifies solvent recovery.

Abstract: A support assembly including elongated upper and lower parallel plates. A plurality of column supports separate and interconnect the parallel plates. A clamping assembly is supported by the plates, the clamping assembly having vertical and horizontal pressure screw assemblies. A vertical pressure screw assembly is mounted upon the upper plate adjacent each end thereof, and a horizontal pressure screw assembly is mounted upon the lower plate at each end thereof. Both vertical and horizontal pressure screw assemblies project into the space between the upper and lower plates. An annular flexible platform is attached to the lower plate adjacent each end thereof, beneath each vertical pressure screw assembly, and projects into the space between the plates. Lenses, which are to be fixed together by adhesive means to form a combination lens, are received upon a flexible platform, aligned by action of a horizontal pressure screw assembly, and pressed together by action of a vertical pressure screw assembly.

Abstract: The disclosure relates to a hand held masking machine which is used for masking various surfaces adjacent to which paint is to be applied, as for example the machine may be used on a wall adjacent a ceiling so that the ceiling may be painted without contacting the adjacent wall with a brush or overlapping with spray paint. The hand held masking machine in accordance with the present disclosure is provided with a frame having offset portions holding a tape roll holder and a paper roll holder with their ends offset so that the tape is dispensed in such a manner that part of the tape adheres to the paper on the roller and the rest of the tape overlaps the paper beyond the edge of the paper roll and beyond the edge of the paper dispensed therefrom.

Abstract: A method and mechanism for preparing individual reclosable thin plastic bags with rib and groove profiles delivered in unengaged position on the finished bag, whereby said bags are made from a continuous supply of layers of film having critically shaped small rib and groove profiles on facing surfaces thereof interlocked with each other and continuously advancing the layers of film and inserting a fixed separating finger between the rib and groove profiles so as to draw them apart, maintaining the profiles in alignment by grooves which do not press the profiles flat but carefully guide them laterally, guiding the film profile layers toward each other and then immediately pressing the profile layers together with a sealing and cutting means following the finger, so that the profiles are interlocked at the location of sealing only.

Abstract: A portable unit useful as a household appliance for making plastic bags from multi-layered plastic films. The unit comprises a housing which includes a compartment for a roll of multi-layered plastic film, a lid for the housing which, when closed, defines an elongated slot with the housing for the withdrawal of the plastic film and a hinge means between the lid and the housing for closing and opening the lid. A wire element is mounted on the upper front edge of the housing and an electric circuit, including a switch, in said housing is used to energize said wire when the lid is firmly closed. A first insulating strip overlies the wire and a second insulating strip in the lid is adapted to firmly overlie said first insulating strip. The lid also includes a channel and a cutting means slidably mounted in said channel for severing the plastic bags, and a post for actuating the switch when the lid is closed.

Abstract: An apparatus for attaching a thermoplastic fitting to the side wall of a pipe is disclosed. The apparatus is made up of a generally U-shaped frame having legs supporting two spaced pipe clamps. The frame supports a fitting holder on a springloaded rod by which a controlled force can be applied on the fitting while fusing the fitting to the pipe. The fitting can also be moved toward and away from the pipe in order to insert and remove a heating mechanism to melt the plastic.

Abstract: A labelling machine comprises a revolving carrier with at least one pickup element rotatably mounted thereon. A stationary sun gear is provided and the drive for each pickup element includes a drive spindle, a pinion meshing with the sun gear and axially displaceable with respect thereto and coupled to the drive spindle. The coupling includes a cam-controllable compensating drive which comprises two opposite cam pieces which are axially displaceable with respect to the drive spindle and connected for rotation with the pinion, at least one driver disposed between the cam pieces for driving the spindle in response to the rotation of the pinion and axially settable to eliminate free play. Cam control for the compensating drive comprises an axial cam and a bipartite cam follower which is mounted for axial adjustment to eliminate free play.

Abstract: The disclosure embraces a method of securing a protective thermoplastic sheet to a surface of a building block which is provided with a locking groove on its side surfaces, the method including the steps of placing the block in a receptacle and passing the block and receptacle beneath a device for supplying a heated thermoplastic sheet which covers the surface of the block and the opening of the receptacle, drawing a vacuum in the receptacle to pull the sheet material securely into the groove formed in the block so that when the sheet material cools, it will be securely anchored in the locking groove provided on the block.

Abstract: A bottle labeling machine is provided with a circular rotatable support about which there are positioned a gluing station, a magazine carrying a stack of labels and a gripper cylinder so that the pickup-transfer surface of a segment carried by said support successively receives glue, picks up a label and transfers it to the gripper cylinder. The segment is geared so that while carried by said support it rotates about its own axis in opposite direction from the support and from the gripper cylinder. This permits a particular machine capacity to be realized with fewer gluing segments.