And Simultaneously Bonding (e.g., Cut-seaming) Patents (Class 156/251)
  • Patent number: 5094707
    Abstract: An apparatus and method is provided for fabricating storage bags that have complementary sealing ribs out of stock material which may be a tubular extruded stock. When produced according to this apparatus and method, the storage bags have open mouths, that is, the sealing ribs are not engaged. The apparatus includes a separator bar to separate and disengage the sealing ribs prior to transversely joining the tube to form the side edges of the bag. Guide plates and a platen maintain alignment of the separated sealing ribs when the side edges are formed. The formed bags are then sequentially cut from the tube.
    Type: Grant
    Filed: July 25, 1990
    Date of Patent: March 10, 1992
    Inventor: Edward C. Bruno
  • Patent number: 5085605
    Abstract: An AC power type EL panel includes an AC power type EL element, thermoplastic adhesive layers formed on all surfaces of the AC power type EL element, and a pair of protective films adhered to cover substantially the entire surfaces of the the thermoplastic adhesive layers and having end portions to be fused to each other to seal the AC power type EL element. A thickness ratio of the protective film to the thermoplastic adhesive layer is within the range of 5:1 to 2:1. Since the thermocompression-bonded end portions of the thermoplastic adhesive layers having poor moisture barrier properties are not exposed between the protective films at the end portions of the AC power type EL panel, penetration of external moisture into the panel can be effectively prevented.
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: February 4, 1992
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takaharu Itani, Masaru Nikaido, Hideki Yamaguchi
  • Patent number: 5080749
    Abstract: A process for producing interior vehicular trim, comprising covering the surfaces of a substrate to which a nap-raised ornamental member has been applied, and removing the synthetic resin surface material at the part thereof covering the nap-raised ornamental member along a weld line. The synthetic resin surface material is welded and melt-cut on the peripheral edge of the ornamental member by carrying out the welding while the synthetic resin surface material is lifted up by force from the surface of the nap-raised ornamental member over the part thereof covering the ornamental member. An apparatus for producing interior vehicular trim, comprises an upper platen disposed to oppose matchably to a lower platen for supporting the substrate to which the nap-raised ornamental member has been partly applied, to effect welding of the synthetic resin surface material which was applied over the surface of the substrate, the welding being carried out along the peripheral edge of the ornamental member.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: January 14, 1992
    Assignee: Takashimaya Nippatsu Kogyo Co., Ltd.
    Inventors: Shigeru Moriya, Sadao Hijikata, Yasuyuki Izuhara, Akihiro Harada, Kunimasa Tsuzuki, Shigeki Nimura, Hirosi Watanabe
  • Patent number: 5074951
    Abstract: Apparatus for severing a plurality of plies of a thermoplastic material and sealing the severed margins thereof is provided. The apparatus comprises a hot-wire element proximate the thermoplastic material for severing and sealing the thermoplastic material. The apparatus further comprises a chamber or manifold for enveloping the hot-wire element in an inert atmosphere which impinges on a proximal portion of the thermoplastic material to be severed and sealed. The apparatus further comprises an actuating mechanism, associated with the hot-wire element, for translating the hot-wire element toward the proximal portion of the thermoplastic material. As a result, the hot-wire element severs the plurality of plies and seals the severed margins thereof so that the severed margins are enveloped by the inert atmosphere impinging on the thermoplastic material.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: December 24, 1991
    Assignee: The Dow Chemical Company
    Inventors: Michael J. Banco, R. Douglas Behr, Herbert B. Geiger
  • Patent number: 5072074
    Abstract: This is a printed circuit comprising multiple layers and rigid and flexible portions and including a sheet of flexible substrate material extending over the entirety of the rigid and flexible portions and paths of conductive material carried by at least one side of the sheet of flexible substrate material. This invention comprises, a sheet of flexible over-layer material extending over at least the entirety of all the flexible portions; a flexible adhesive material adhesively attaching the sheet of flexible over-layer material to the entirety of all the flexible portions; sheets of a rigid substrate material extending over the entirety of all the rigid portions; and, a rigid adhesive material adhesively attaching the sheets of a rigid substrate material to the entirety of all the rigid portions. The rigid adhesive attaching the sheets of rigid substrate to the rigid portions may extend out over the edge of the rigid portions onto the flexible portions to form a protective edge.
    Type: Grant
    Filed: July 24, 1990
    Date of Patent: December 10, 1991
    Assignee: Interflex Corporation
    Inventors: Arthur J. DeMaso, Thomas H. Stearns
  • Patent number: 5066531
    Abstract: A process for hot pin perforation bonding of a plurality of lamina of thermoplastic foam sheet material to produce a controllably rigid, strong, lightweight and easily shaped cushioned foam plank; and a product as formed in that process.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: November 19, 1991
    Assignee: Ametek
    Inventors: Warren F. Legg, Wilfred E. Willis
  • Patent number: 5061331
    Abstract: An apparatus for cutting and sealing the cut edges of semipermeable and at least partially thermoplastic fabric material is disclosed as having a support to position the material for cutting and sealing, a vacuum system to secure the material to the support to immobilize the material while the latter is being cut and sealed, an ultrasonic cutter to cut the material and to seal cut edges to prevent raveling thereof, and a guide to direct the cutter to cut the material in a desired configuration. The apparatus may be particularly adapted to cut and seal cut edges of automotive safety air bag material.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: October 29, 1991
    Assignee: Plasta Fiber Industries, Inc.
    Inventor: Robert M. Gute
  • Patent number: 5059270
    Abstract: In a process for the welding of plastic films lying flat, one on top of the other, the plastic films are brought into contact with a heated cutting edge and hot-tool welded. Two-layered or multilayered composite films of different chemical composition are used for the welding; for example, one composite film can be an opaque, colored or uncolored layer, on which there is arranged a transparent sealing layer comprised of a propylene-ethylene copolymer or a propylene-ethylene blend. The sealing layer of the opaque composite film is welded directly to a sealing layer of a second, transparent composite film.
    Type: Grant
    Filed: March 16, 1989
    Date of Patent: October 22, 1991
    Assignee: Alkor GmbH Kunststoffe
    Inventors: Edgar Fleischmann, Maximillian Mayr, Heinrich Heitz
  • Patent number: 5032208
    Abstract: This invention relates to the manufacturing of a monobloc bundle of straight tubes, laterally contiguous and fixed together. Initially, the bundle is made of tubes which are laterally contiguous and which are not fixed together. An apparatus is used to fix together the tubes at one or at both ends. This apparatus consists of a means to form the bundle of tubes laterally contiguous but not fixed together, of a means to cut the bundle perpendicular to the axis of the tubes and of means to fix together the ends of the tubes in the plane of the cut. The bundle of tubes can be used to make the core of a sandwich panel.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: July 16, 1991
    Inventor: Horst Strauss
  • Patent number: 5028294
    Abstract: A die for use in heat welding a plastic motif to a textile base as a first welding ledge extending along a first, substantially planar face of the die, the welding ledge having a coplanar welding surface lying at least 4 mm. above the die face and having a cutting edge projecting above the welding surface to a height of at least 0.3 mm. The width of the welding surface is not less than 0.5 mm and is preferably between 1.5 mm and 3 mm. The die also has further welding ledges on which the welding surface extends the full width of the ledge. Each welding surface serves to weld the plastic material to the textile while the cutting edge severs excess material from the plastic motif along a welded line.
    Type: Grant
    Filed: May 26, 1989
    Date of Patent: July 2, 1991
    Assignee: Fabrex Limited
    Inventor: Douglas R. England
  • Patent number: 5021117
    Abstract: A mechanism and method for seaming and joining overlaid sheets such as to form seams on adjacent bags by applying heated pressure sealing jaws to opposite sides of the overlaid sheets with the pressure being applied decreasingly inwardly away from the edges of the seam and cutting the seaming areas between them to separate the seamed portions so as to form edges of adjacent bags with the bags preferably having rib and groove upper fasteners extending outwardly to the edge of the seam.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: June 4, 1991
    Assignee: Zip-Pak, Inc.
    Inventor: Hugo Boeckmann
  • Patent number: 5015325
    Abstract: In a L-sealer for heat-sealing center-folded thermoplastic film, wherein a pair of relatively movable clamping jaws grip and heat seal the facing film webs along an L-shaped seal line, a series of perforating pins are mounted to one clamping jaw to perforate the film webs closely adjacent the seal line. The perforations allow escape of air when the film is subsequently shrunk, the close spacing of the perforations to the seal line insuring that the perforations are disposed at the side of the packaged article when the film is shrunk to minimize entry of dirt and the like.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: May 14, 1991
    Inventors: Charles J. Bennett, Billy J. Simpson, Sr.
  • Patent number: 5004514
    Abstract: A protective book covering including a relatively long piece of sheet material and a relatively short piece of sheet material overlying the long piece, the longitudinal edges of the two sheets being sealed together. A seal and tear line extending transverse to their longitudinal edges joins the two pieces and forms a line of severance along which the pieces can be torn to produce two units, each unit having a pocket adjacent to the seal and tear line for accommodating one of the covers of a book. One of the units has a section, extending from the pocket of that unit, long enough to wrap around the spine of the book, and be secured to the other unit. The sheet material is preferably transparent plastic. The book covering can be made in a continuous manner by providing independent lengths of relatively wide and relatively narrow plastic sheet material, and placing the lengths in face-to-face contact so that their longitudinal axes extend in the same direction.
    Type: Grant
    Filed: September 14, 1989
    Date of Patent: April 2, 1991
    Assignee: Brodart Co.
    Inventors: Joseph S. Pugliese, Charles L. Garman
  • Patent number: 4999081
    Abstract: An apparatus for cutting and heat sealing a pair of overlying heat-sealable panels together comprises a conveyer for moving a pair of superimposed webs of panel material along a linear path and into a cutting and sealing station. A combined cutting and sealing die assembly includes a cutting die for cutting the panels out of the webs and a sealing die for sealing peripheral edges of the superimposed panels together. A heater element is mounted on each of the dies to heat them to their respective cutting and sealing temperatures with the dies being thermally insulated to prevent heat transfer therebetween. A plurality of spring clips attach the dies together to permit thermal expansion of the cutting die relative to the sealing die.
    Type: Grant
    Filed: October 11, 1989
    Date of Patent: March 12, 1991
    Assignee: Float Machines Inc.
    Inventor: Bradley H. Buchanan
  • Patent number: 4999072
    Abstract: A film encapsulated, gas cushion insole product which maintains its shape by means of a core fabric therein to which a desiccant may be added, if desired. To contain the gas for long periods of time, the film contains a layer of polyvinylalcohol.
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: March 12, 1991
    Assignee: Milliken Research Corporation
    Inventor: Louis Dischler
  • Patent number: 4995565
    Abstract: A cassette reel in use for a video tape cassette including a hub and an upper flange made of a transparent plate which is provided with an annular groove on one side surface of the upper flange and a foil deposited on the surface of the upper flange which is surrounded by the annular groove, so that the foil can be cut clearly and then deposited on the face of the upper flange which is surrounded by the annular groove by hot stamp with a clear outer profile, whereby decorative effects can be obtained by the foil covering the internal construction of the hub and when the cassette reel is used for a video tape cassette, the commercial value of the video tape cassette can be elevated.
    Type: Grant
    Filed: October 14, 1987
    Date of Patent: February 26, 1991
    Assignee: Sony Corporation
    Inventors: Kiyoshi Urayama, Kazuo Ozawa
  • Patent number: 4986872
    Abstract: The device comprises two paddles 1 each one of them being connected to a bar 3, the extremities of which are placed within a cam track. The cam track is formed in the surface turned towards the working zone of support 18 which is located corresponding to both the lateral extremities of the device. The motion of the bars 3 and therefore of the paddles 1 along the cam track 8 which has a rectilinear section 8' and a section of circular sector 8", is determined for each bar by a pair of connecting rods 7 which has a slit 7. The two ends of the bars 3 close to the extremities are placed in the slit. The four connecting rods 7 rotate synchronously, the rods corresponding to the same paddle being in the same direction, the rods corresponding to the same side of the device being opposite to the other.
    Type: Grant
    Filed: August 15, 1989
    Date of Patent: January 22, 1991
    Assignee: P.F.M. S.p.A.
    Inventor: Pietro Fioravanti
  • Patent number: 4978055
    Abstract: A reinforcing weld structure for thermo-adhesive sheets joined by high frequency welding methods. The invention is particularly concerned with a photo finisher wallet fabricated of flexible thermoplastic sheet material and including the reinforcing weld of the present invention at each corner of each of the wallet's pockets. The photo finisher wallet includes a first flexible thermoplastic sheet foldable to form front and rear covers, one of which is substantially rectangular and has a welded seam along three of its edges. A second substantially rectangular thermoplastic sheet is sealed along its three edges to the rectangular cover by the seam, the second sheet having an unsealed edge to form a pocket.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: December 18, 1990
    Assignee: Rembrandt Photo Services
    Inventor: William R. Miller
  • Patent number: 4975140
    Abstract: Apparatus for cutting a tape of folded textile fabric containing a continuous strip of fusible material into segments suitable for sewing to a garment as belt loops.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: December 4, 1990
    Inventor: Myung Y. Kang
  • Patent number: 4964944
    Abstract: An apparatus for sealing and severing a web of film. The apparatus includes a first jaw located on one side of the web of film and a second jaw located on a second side of the web of film. The first and second jaws cooperate to grip the web of film. Located within the first jaw is a heater member for sealing and severing the web of film. The heater member is secured so that the time and/or pressure at which the heater member engages the web of film may be varied independent of the first jaw.
    Type: Grant
    Filed: July 28, 1986
    Date of Patent: October 23, 1990
    Assignee: Baxter International Inc.
    Inventors: William C. Christine, Steffen Lyons, John Posey, Schmidt, Josef, George J. Herschman
  • Patent number: 4961805
    Abstract: A preheater assembly for softening a selected portion of plastic stock material prior to severing and edge sealing is disclosed. The preheater assembly includes a pair of opposed preheaters, each having a heater tip connected to a source of heated air. The air flows through the tip to maintain it at a preselected temperature. The preheaters are mounted on opposite sides of the stock material for motion toward the material to engage it on opposite sides to heat and soften it, and away from the material to release it. Clamp elements engage the stock material during the heating and softening process.
    Type: Grant
    Filed: May 17, 1989
    Date of Patent: October 9, 1990
    Assignee: Com-Pac International, Inc.
    Inventor: Lester D. Siebert
  • Patent number: 4960479
    Abstract: The present invention provides a method for manufacturing an automobile sunvisor, wherein a pair of overcoatings for the sunvisor, the rear surface of which is respectively covered with a layer of thermoplastic resin, is pressure-welded between an upper electrode member and a lower electrode member and cut at the same position without displacement, thus forming no protruding welded portion in the periphery of the sunvisor. Moreover, the pair of the overcoatings can be securely welded to each other without any particular portion for welding prepared in the overcoatings because the thermoplastic resin is melted inside the sealed portion of the pair of overcoatings during the pressure-welding.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: October 2, 1990
    Assignee: Delta Kogyo Co., Ltd.
    Inventors: Yoshikazu Yasuda, Kazuaki Tsubota, Shiro Tanimoto
  • Patent number: 4954383
    Abstract: Metallized plastic sheet film products improved by being perforated through their surfaces are disclosed. These sheet products can be incorporated into improved strength composites since their perforations permit glue through and prevent delamination and shear previously observed with metallized plastic sheet film products. In addition, the perforations can be used to adjust the conductivity/resistance of the electrically conductive sheet films.
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: September 4, 1990
    Assignee: Southwall Technologies, Inc.
    Inventors: Robert N. King, Gerald R. Behling
  • Patent number: 4949846
    Abstract: The continuously formed wrapping material tube traversing a horizontal wrapping machine, and containing articles to be wrapped therein, is sequentially passed between a first pair of opposed, counter-rotating heat sealing bar sets, and then between a second pair of opposed, counter-rotating combination heat sealing and cutting bar sets, to heat seal and cut spaced apart longitudinal sections of the tube, each positioned between an adjacent pair of articles, to form individual, article-containing packages. As each of these longitudinal tube sections passes through the first bar set, corrugated outer ends of two bars therein mesh to compress and heat seal the tube section along a corrugated heat seal area whose ridges and valleys extend transversely to the tube length.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: August 21, 1990
    Inventor: Lawrence D. Lakey
  • Patent number: 4943329
    Abstract: A method for manufacturing ties consisting of interwoven tapes (101, 201). The single tie portions (C1, C2, C3) are cut out from a piece (7) of fabric (1) of interwoven warp and weft tapes (101, 201). This piece of fabric (1) may be bonded by means of a hot-melt adhesive to a base web (4) made of fabric or plastic material foil. Before or after the tie portions (C1, C2, C3) have been cut out, they are peripherally provided with selvedge seams (9) at least along the tie portion cutting lines (8).
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: July 24, 1990
    Assignee: A. Testoni S.p.A.
    Inventor: Carlo Fini
  • Patent number: 4938821
    Abstract: The present invention is a method and apparatus for making a diaper having one or more elastic margins. The diaper uses for the entire moisture permeable backing sheet an elastomeric material of the type that is heat unstable and relatively inelastic in its unshrunk form and stable and relatively elastic in its heat shrunk form. Diapers made using one of these materials as a backing sheet can be conventionally assembled. After assembly, the marginal areas, which may be either or both of the transverse and longitudinal margins, may be heated to a sufficient temperature for shrinkage to occur in the backing sheet. This shrinkage will only occur when the backing sheet is unrestrained. The method provides for the maintenance of longitudinal tension in the central portion of an end-to-end assembly of diaper units while relaxing the edge tension on the units.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: July 3, 1990
    Assignee: Weyerhaeuser Company
    Inventors: J. Donald Soderlund, Richard H. Young, E. Peter Lancaster
  • Patent number: 4935087
    Abstract: An absorbent dressing comprising, a transparent backing sheet having a relatively high water vapor permeability, a front sheet having a pressure sensitive adhesive on a front surface thereof for facing a wound with the front sheet and adhesive having a plurality of apertures extending therethrough, and an absorbent layer intermediate the front sheet and backing sheet having a plurality of openings in register with the apertures of the front sheet, with the openings of the layer being at least as large as the apertures of the front sheet.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: June 19, 1990
    Assignee: The Kendall Company
    Inventor: Thomas Gilman
  • Patent number: 4913761
    Abstract: A process and apparatus for severing and simultaneously sealing a plurality of plies of thermoplastic material to form bags for storing foods therein is provided. A severing and sealing element fabricated from a long range ordered alloy is used. The use of that alloy provides increased element life at higher operating temperatures while significantly reducing odor and off-flavor problems in the bags.
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: April 3, 1990
    Assignee: The Dow Chemical Company
    Inventors: Patrick M. Russell, Roger K. Pihlaja, Timothy R. Woods
  • Patent number: 4911983
    Abstract: An adhesive made from a thermosetting resin composition consisting of (a) a condensed polycyclic aromatic compound, (b) an aromatic crosslinking agent and (c) an acid catalyst is applied to each surface of adherends treated with a particular surface treating agent and heated at a temperature of 100.degree.-400.degree. C. in an oxidizing or non-oxidizing atmosphere to produce an adhesion structure. In order to provide a conductive adhesion structure, a conductive promotion catalyst is included in the adhesive. Further, a carbonaceous or graphitic adhesion structure is obtained by carbonization or graphitization of the adhesion structure.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: March 27, 1990
    Assignee: Ibiden Company, Ltd.
    Inventors: Sugio Otani, Hiroya Kakegawa
  • Patent number: 4902374
    Abstract: A bag making machine and method for the continuous production of bags from a folded web of thermoplastic material is provided. The apparatus includes a capability for making bags of differing widths. The apparatus includes a rotatable drum having a plurality of sever and seal stations for forming individual positioned about the outer periphery of the drum. A source of a continuous folded web of thermoplastic material is also provided, and continuously fed onto the surface of the drum. Means positioned between adjacent sever and seal stations tuck the web of material inwardly from the periphery of the drum.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: February 20, 1990
    Assignee: The Dow Chemical Company
    Inventors: David A. Smith, Herbert B. Geiger, R. Douglas Behr
  • Patent number: 4900377
    Abstract: Articles are formed of materials which have at least one layer comprising a mixture of thermoplastic and other fibers. This latter layer may be thermobonded together and then densified along at least a section of the eventual peripheral edge margin of an article to be formed from the material. Thermoplastic material containing cover sheets may also be secured to the core and densified in this manner. The entire eventual peripheral edge margin of the article is typically densified. The material is cut within the densified region or slightly outside the densified region to provide a soft peripheral edge. Absorbent materials may be thermobonded within the layer and surrounded by a densified edge to fix them within the article. The composite materials are used in manufacturing infant car seat liners and other articles. In addition, sections of the material may be densified and provided with weakened areas, such as perforations, to enable users to selectively separate the articles along the perforations.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: February 13, 1990
    Assignee: Weyerhaeuser Company
    Inventors: Douglas E. Redford, Lee E. Perdelwitz, Jr., Ron H. Iff, Paul G. Gaddis, David G. Halley, Michael E. Cotie, David E. Hanke, Amar N. Neogi
  • Patent number: 4893837
    Abstract: A protective book covering including a relatively long piece of sheet material and a relatively short piece of sheet material overlaying the long piece, the longitudinal edges of the two sheets being sealed together. A seal and tear line extending transverse to their longitudinal edges joins the two pieces and forms a line of severance along which the pieces can be torn to produce two units, each unit having a pocket adjacent to the seal and tear line for accommodating one of the covers of a book. One of the units has a section, extending from the pocket of that unit, long enough to wrap around the spine of the book, and be secured to the other unit. The sheet material is preferably transparent plastic. The book covering can be made in a continuous manner by providing independent lengths of relatively wide and relatively narrow plastic sheet material, and placing the lengths in face-to-face contact so that their longitudinal axes extend in the same direction.
    Type: Grant
    Filed: March 29, 1989
    Date of Patent: January 16, 1990
    Assignee: Brodart Co.
    Inventors: Joseph S. Pugliese, Charles L. Garman
  • Patent number: 4886299
    Abstract: A protective book cover of transparent plastic is formed with a strengthened spine section provided by a combination of a spine reinforcing strip and decreased height of the spine section of the protective cover. The book cover receiving pockets of the protective cover are formed with inwardly convex slant-cut edges to facilitate insertion of the book covers, and a card pocket is formed in one of the pockets by a slant-cut slit that is convex upwardly to provide an easily accessible opening. A heat weld seam forming the front and back cover pockets is provided with sharp rectangular inside corners for a closer fit of the protective cover to the book. The protective cover is adjustable for book width by forming it of a primary or outside panel that is scored for separation of a back cover portion which may be adjustably positioned and adhesively secured to a front cover portion.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: December 12, 1989
    Inventor: Gerard M. Ducorday
  • Patent number: 4877205
    Abstract: A high-altitude balloon having prestrained gores made from an asymmetrical gore pattern. The invention includes the balloon, the method of assembling the balloon, and a table specially designed to implement the method. The method can be used to assemble balloons of varying shapes and sizes, within a determinable range of ratios of gore width to gore length. The method involves cutting and sealing edges of a pair of flexible plastic sheets along a straight edge of a table, then inverting the seam so formed until it is aligned with a curved index line on the surface of the table. The curved index line is longer than the seam created along the straight edge so stretching is required during inverting. Successsively cutting, joining and inverting pairs of sheets in this manner produces a balloon with a plurality of symmetrical gores that give the balloon a predetermined shape when inflated.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: October 31, 1989
    Assignee: Winzen International, Inc.
    Inventor: James L. Rand
  • Patent number: 4867829
    Abstract: A process for producing interior vehicular trim, comprising covering the surface of a substrate to which a nap-raised ornamental member, and removing the synthetic resin surface material at the part thereof covering the nap-raised ornamental member and along the weld line. The synthetic resin surface material is welded and melt-cut on the peripheral edge of the ornamental member by carrying out the welding while the synthetic resin surface material is lifted up by force from the surface of the nap-raised ornamental member over the part thereof covering the ornmental member. An apparatus for producing interior vehicular trim, comprises an upper platen disposed to oppose matchably to a lower platen for supporting the substrate to which the nap-raised ornamental member has been partly applied, to effect welding of the synthetic resin surface material which was applied over the surface of the substrate, the welding being carried out along the peripheral edge of the ornamental member.
    Type: Grant
    Filed: August 31, 1987
    Date of Patent: September 19, 1989
    Assignee: Takashimaya Nippatsu Kogyo Co., Ltd.
    Inventors: Shigeru Moriya, Sadao Hijikata, Yasuyuki Izuhara, Akihiro Harada, Kunimasa Tsuzuki, Shigeki Nimura, Hirosi Watanabe
  • Patent number: 4863544
    Abstract: Apparatus for thermally welding two layers together including; a first and second bar, wherein one of the bars presents a larger welding surface than the other bar; structure for reciprocally moving at least one of the bars relative to the other bar, in a first direction between an open position wherein the bars are disposed in spaced apart relationship so as to permit the insertion and withdrawal of said layers between the bars, and a closed position wherein at least one of said bars is adapted to apply heat and pressure to said layers for welding said layers together; and structure which reciprocally moves at least one of said bars relative the other bar in a second direction between two limit positions so as to present different portions of said bar having the larger welding surface for each successive weld of said layers to evenly utilize the entire welding surface of the larger welding surface over successive welds.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: September 5, 1989
    Assignee: ATR Equipment Industries Limited
    Inventors: Gary Plate, Nicolaas V. Hattem
  • Patent number: 4861413
    Abstract: An apparatus for welding and cutting a film of single-layer or multi-layer synthetic material includes two jaws which are movable relative to one another. One of the jaws has a welding contact zone which includes a strip which has a groove of substantially v-shaped cross-section separating a pair of wings parallel to the edge of the corresponding jaw. The other of the jaws is equipped with a means for cutting the film which includes a wire of circular cross-section projecting relative to the edge of the jaw which supports it, so that the wire and the groove can interact with one another to make the cut as the weld is performed by the wings of welding strip.
    Type: Grant
    Filed: March 2, 1988
    Date of Patent: August 29, 1989
    Assignee: Societe Generale Des Eaux Minerales de Vittel
    Inventor: Roger Schmitz
  • Patent number: 4859260
    Abstract: An apparatus and method for cutting and sealing belt loop ends includes sealing and cutting members disposed on opposite sides of a length of fabric belt loop material formed wholly or partly of a heat sealable material. The sealing and cutting members are urged together in a scissor-like fashion to cut the strip across its width. The members are also configured to compress regions of the strip adjacent the cut ends. At least one of the sealing and cutting members is heated and the heat is transferred from the members to the compressed region adjacent the ends to melt or soften at least a portion of the meltable material. The melted or softened material merges or intermingles with the threads of the fabric in the compressed regions and upon cooling hardens to effect a seal of the belt loop at the cut ends. The seal substantially prevents the fabric from unraveling during subsequent laundering and wear.
    Type: Grant
    Filed: November 10, 1987
    Date of Patent: August 22, 1989
    Assignee: Tice Engineering & Sales Inc.
    Inventor: William A. Tice
  • Patent number: 4845851
    Abstract: A device is provided for severing the tails of a knot formed in sutures of a wide variety of cross-sectional dimensions which includes a housing, an electrical heating element forming at least a portion of a notch, guide means operably associated with the heating element and the housing, the guide means functioning to bring the tails of the knot into contact with the heating element and meams for electrically supplying power to the heating element.
    Type: Grant
    Filed: December 9, 1987
    Date of Patent: July 11, 1989
    Assignee: Milliken Research Corporation
    Inventor: William P. Warthen
  • Patent number: 4838977
    Abstract: To make plastic carrying bags or sacks, sections are cut or are severed by hot wire welding from a gusseted tubular film by a formation of transverse seam welds and transverse severing cuts or by hot wire-welded transverse seam welds. At least in their bottom portion the sections are provided with corner seam welds, which are separately formed in the two folds and which diverge obliquely from the outer fold lines toward the top and/or bottom seam weld and terminate short of the inner fold line and merge into the latter. To prevent in the making of the carrying bags an elongation of the intermediate portion of the tubular film, the latter is initially formed with corner seam welds only in one fold of each of the two gussets before the transverse seam welds and transverse severing cuts or hot wire-welded transverse seam welds are formed. When said corner seam welds have cooled, congruent corner seam welds are formed in the respective other folds.
    Type: Grant
    Filed: August 22, 1986
    Date of Patent: June 13, 1989
    Assignee: Windmoeller & Holscher
    Inventors: Wilfried Ebmeyer, Fritz Achelpohl, Friedhelm Mundus
  • Patent number: 4838981
    Abstract: The device comprises two paddles (1), each one of the paddles being fixed to a bar (3), the ends of which are located within a cam path (8) formed on the surface turned towards the working zone of support (18) located corresponding to both the lateral heads of the device. The motion of the bars (3) and obviously also of the paddles (1) along the cam path (8) which presents a rectilinear working section (8') and a portion of a circular section (8"), is determined for each bar by a pair of rods (7), each rod having a slot (7'). Two sections of the bars close to their extremities are placed within the slot (7') and all four rods rotate synchronously, the bars placed corresponding to the same paddle rotating in the same direction while the rods corresponding to the same head of the device rotating in the opposite direction.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: June 13, 1989
    Assignee: P.F.M. S.p.a.
    Inventor: Pietro Fioravanti
  • Patent number: 4826548
    Abstract: A roll of composite tape comprising an adhesive tape and a strippable backing tape is paid out and the adhesive tape and the strippable tape are separated. A hole of predetermined diameter is punched through the strippable tape and the strippable tape and the adhesive tape are brought back together again such that a circular portion of the adhesive face of the adhesive tape remains exposed through the hole punched in the strippable tape. The exposed portion of the adhesive face of the adhesive tape is applied against a face of a lens placed on a support by displacing at least one of the support and a buffer towards each other. A cutting device is used to cut the adhesive tape around the peripheral edges of the lens and the lens is removed together with its cut-out portion of adhesive tape. The remaining portion of the adhesive tape and the punched strippable tape is also removed, and the above operations are repeated for each lens in a series of lenses.
    Type: Grant
    Filed: March 25, 1988
    Date of Patent: May 2, 1989
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Patrick Herbin, Jean-Claude Lacroix
  • Patent number: 4820570
    Abstract: A laminated insulation paper of the type having two cellulose layers separated by a plastic layer is formed with through holes in the plastic layer such that the respective cellulose layers may contact one another through the through holes. The insulation paper is formed by pressing heated, rounded pins into one of the cellulose layers while backing the other layer until the two cellulose layers are contacted through the hole thus formed in the plastic layer.
    Type: Grant
    Filed: April 21, 1986
    Date of Patent: April 11, 1989
    Assignee: Fujikura Ltd.
    Inventors: Masakazu Hasegawa, Michio Takaoka, Syotaroh Yoshida, Kazuya Akashi
  • Patent number: 4820468
    Abstract: A process for the assembly of welded plastic hollow plate heat exchangers in which hollow plastic plates with channels running in one direction are welded at the open edge of the sheets to hollow plastic spacing strips which have at least one closed channel running along the open edge of the hollow plastic plate parallel to the open face of the hollow plastic plate by using a taut hot wire, hot knife, or similar cut off and seal techniques and the heat exchangers made by this process. Further improved ruggedness and strength are achieved by melting together the ends of the spacers and the adjacent closed top of the hollow plates.
    Type: Grant
    Filed: March 22, 1985
    Date of Patent: April 11, 1989
    Inventor: Martval J. Hartig
  • Patent number: 4816104
    Abstract: A method and system for preparing flat bottom thermoplastic sacks comprising process steps and means for forming a tube of thermoplastic film, collapsing said tube while forming two oppositely disposed gussets therein, forming two pairs of diagonal sealed seams in the gussets, forming a transverse sealed seam across the tube along a line which includes the inboard ends of the diagonal seams and forming preweakened transverse lines closely adjacent to said transverse sealed seam or forming a severing line along this line, removing the four double triangular regions bounded by the diagonal seams, the transverse seams and the side edges of the tube and collecting the resulting structures either while still interconnected or by stacking the severed sacks. The final structure can have handles or it can be handleless.
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: March 28, 1989
    Assignee: Mobil Oil Corporation
    Inventor: Gordon L. Benoit
  • Patent number: 4812192
    Abstract: A process and apparatus is provided for cutting multiple plies of thermoplastic material having thickened sections, such as defined by cross-sections of matable parts of a zipper closure formed in the material, and for concurrently sealing the severed margins of the material which includes sealing the severed zipper closure portions thereof. The process and apparatus perform the operative steps of: first, preblocking the thickened material adjacent to the zipper closure portions of the material in areas thereof to be severed and sealed; then, applying heat and pressure to the thickened material and remaining sections of the material in those areas to render the material tacky and temporarily stick the multiple plies together in those areas; and, thereafter, contacting those areas of the material with a heated cutting and sealing element in order to sever all of the multiple plies and seal the severed margins thereof.
    Type: Grant
    Filed: April 11, 1988
    Date of Patent: March 14, 1989
    Assignee: The Dow Chemical Company
    Inventors: Timothy R. Woods, R. Douglas Behr
  • Patent number: 4804432
    Abstract: Gloves and other articles are manufactured from a pair of thermoplastic sheets which are drawn along a process line in adjacent, facing relation. A portion of one of the sheets is pushed outwardly to form an outwardly projecting loop, and a thumb-shaped line is formed between adjacent sides of the loop. The loop and adjacent portions of the thermoplastic sheets are then advanced to a finger and hand-forming station, where a thermobonded line of the shape of fingers and hand is formed between the thermoplastic sheets in registry with the thumb-shaped line, while retaining an open wrist portion. One may then cut away the resulting glove at the wrist portion.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: February 14, 1989
    Assignee: Bodiguard Technologies, Inc.
    Inventors: Eran J. P. Jurrius, Geri A. Russ, Travis A. Russ
  • Patent number: 4793393
    Abstract: Process for producing a veneer workpiece in the form of a flat plate or the like with a preferably, at least partly wooden base layer, optionally in the form of a base veneer constituted by several individual layers, a face veneer having at least one wooden face veneer layer and a cutout passing through the base layer and the face veneer, in which the base layer and the face veneer are preferably glued together by means of a synthetic resin adhesive, which produces the cutout passing through the base layer and the face veneer and finally the circumferential wall or walls thereof are covered with face veneer material, characterized in that the gluing of the base layer and the face veneer to form a solid workpiece, the formation of the cutout or cutouts and the covering of the circumferential wall thereof with the face veneer in a single pressure punching process, the face veneer layer being pressed through from the surface of the veneer workpiece into the cutout or cutouts, while covering the circumferential w
    Type: Grant
    Filed: October 14, 1987
    Date of Patent: December 27, 1988
    Inventor: Peter Pelz
  • Patent number: 4786346
    Abstract: This invention is generally accomplished by providing continuous self-adhesive strands of elastic to a substrate having retractable supports extending therefrom. The retractable supports in a convex pattern are contracted with the self-adhering elastic and the substrate bearing the elastic and supports is brought into contact with the web to which the elastic is to be transferred. The series of supports around which the elastic contacts are forced to retract as the self-adhering elastic is pressed against the web causing the elastic to transfer to the substrate thereby creating an elastic band on the substrate. In a preferred form the substrate is fed two strips of self-adhering elastic that are applied on each side of a series of a convex pattern of pins and then pressed together around opposing sides of the convex pattern of pins to seal the elastic to itself and sever the elastic, creating a contoured closed loop around the pins.
    Type: Grant
    Filed: October 22, 1987
    Date of Patent: November 22, 1988
    Assignee: Kimberly-Clark Corporation
    Inventors: Thomas M. Ales, Jeffrey J. Samida, Donald F. Arthur, Ronald H. Wideman
  • Patent number: 4786543
    Abstract: There is disclosed a drop-in ceiling tile or the like together with method of making the same wherein expanded polystyrene in a large block is cut into substrate sheets approximately two feet by four feet by three-quarters to one inch thick using a hot-wire cutter, which substrate sheet thereafter is provided with a thin facing of vinyl plastic stretch resistant sheet, e.g. rigid PVC, about 0.001 to about 0.005 inches in thickness having nearly invisible perforations therein to facilitate the escape of moisture from water base adhesive utilized to laminate the vinyl sheet onto the expanded polystyrene substrate. The vinyl sheet will previously have been textured in a conventional manner or otherwise decorated, in a preferred embodiment.
    Type: Grant
    Filed: October 6, 1987
    Date of Patent: November 22, 1988
    Inventor: Don Ferm