Continuous Longitudinal Slitting Patents (Class 156/271)
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Patent number: 4740256Abstract: 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.Type: GrantFiled: August 14, 1986Date of Patent: April 26, 1988Assignee: Minnesota Mining and Manufacturing CompanyInventor: Daryl E. Vosberg
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Patent number: 4687532Abstract: A method and apparatus for slit sealing thermoplastic materials, primarily linear low density polyethylene, either alone or with coextrusions of other materials. The material is passed over a presealing roll, and the area to be slit is presealed using heated air. Very quickly after the presealing, the material is slit with a heated knife blade, the slit edges being sealed by dragging along the sides of the heated blade. The cutting edge of the blade is angled to roll a bead upwardly on the material, and the slit edges are held taut and separated by an edge holding device.Type: GrantFiled: January 9, 1986Date of Patent: August 18, 1987Inventor: James R. Johnson
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Patent number: 4684433Abstract: An apparatus for applying tape to a moving press board web including a base for carrying a press board web, a slitter mounted on the base for cutting the web into three strips, a tape applicator for applying a strip of tape to the center strip, the tape being wide enough to overlap the edges of the adjacent strips, a second slitter for cutting the center strip in half and a die for cutting the strips into predetermined lengths.Type: GrantFiled: April 3, 1985Date of Patent: August 4, 1987Assignee: Kempsmith Machine CompanyInventor: Robert A. Gohr
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Patent number: 4680073Abstract: A method and apparatus for heat sealing are disclosed. A fin seal is formed along the edge of the film, with the seal being trimmed immediately after being formed, and while still warm and in registry.Type: GrantFiled: March 17, 1986Date of Patent: July 14, 1987Assignee: Reynolds Metals CompanyInventors: Hans A. Brunner, Donald E. Vaughan
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Patent number: 4650704Abstract: A self-adhesive wall covering or the like that is easily removable from a wall. The wall convering consists essentially of a laminate structure formed of a layer of fabric having a visible pattern on one side and an acrylic-saturated paper adhesively fixed to the other side. A layer of PVA adhesive is coated onto the acrylic-saturated paper and a layer of release paper is secured to the PVA adhesive as protection and to prevent inadvertent adhesion of the laminate wall covering to a surface. When the release paper is removed, the PVA adhesive is exposed and serves as the medium by which the wall covering adheres to the wall.Type: GrantFiled: November 1, 1985Date of Patent: March 17, 1987Assignee: Stik-Trim Industries, Inc.Inventor: Irwin P. Rothenberg
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Patent number: 4623579Abstract: A decorative composite article which may be longitudinally slit to form a yarn product is disclosed which has a combined a phosphorescent and fluorescent decorative appearance. The composite article includes paired outer layers of a thermoplastic resin between which is disposed a decorative layer comprising a composition including a colorant component having a phosphorescent colorant and a fluorescent colorant, and a resin binder material. The fluorescent colorant is present in an amount by weight that is up to an amount equal to that of the phosphorescent colorant. The present binder material may be selected from polyester, polyurethane and acrylic polymers and copolymers, with a mixture of a butadiene-acrylonitrile rubber and polyurethane composition being preferred.Type: GrantFiled: October 4, 1985Date of Patent: November 18, 1986Assignee: Multi-Tex Products Corp.Inventor: Joe S. Quon
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Patent number: 4555441Abstract: A self-adhesive wall covering or the like that is easily removable from a wall. The wall covering consists essentially of a laminate structure formed of a layer of fabric having a visible pattern on one side and an acrylic-saturated paper adhesively fixed to the other side. A layer of PVA adhesive is coated onto the acrylic-saturated paper and a layer of release paper is secured to the PVA adhesive as protection and to prevent inadvertent adhesion of the laminate wall covering to a surface. When the release paper is removed, the PVA adhesive is exposed and serves as the medium by which the wall covering adheres to the wall.Type: GrantFiled: March 6, 1985Date of Patent: November 26, 1985Assignee: Stik-Trim Industries, IncorporatedInventor: Irwin P. Rothenberg
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Patent number: 4546042Abstract: A decorative composite article which may be longitudinally slit to form a yarn product is disclosed which has a combined a phosphorescent and retroreflective decorative appearance. The composite article includes a phosphorescent film component prepared from a thermoplastic resin base having a phosphorescent colorant disposed on the outer directed surface. The phosphorescent film component is laminated to a retroreflective film component comprising a thermoplastic resin base containing a quantity of reflective glass beads or lenses bonded thereto. The retroreflective film component bears a layer of an adhesive composition on its free surface, which is oriented during lamination to enter adhesive engagement with the uncoated surface of the phosphorescent film component.The composite article prepared in accordance with the present invention offers improved flexural strength in combination with a unique decorative appearance that combines the benefits of phosphorescent activity with direct reflective capability.Type: GrantFiled: January 27, 1984Date of Patent: October 8, 1985Assignee: Multi-Tex Products Corp.Inventor: Joe S. Quon
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Patent number: 4504348Abstract: A method of continuously producing a series of tubular labelling sleeves, which method comprises (a) printing on each of the upper and lower outer faces of a flat tube or resilient material a sequence of desired images, the image on the upper face of the flat tube being printed in register with the image on the lower face of the flat tube; (b) removing the longitudinal edge portions of the flat tube from each of the two sides of the tube; (c) forming at regular intervals a seal across the width of the resilient material so as to seal together the upper and lower sides of the tube, steps (b) and (c) being performed in either order; and (d) severing the tube across its width along the resultant seal thereby to form a tubular sleeve.Type: GrantFiled: December 13, 1983Date of Patent: March 12, 1985Inventor: David J. Instance
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Patent number: 4478661Abstract: A method of making a reinforced collapsible hose construction and is provided wherein such hose construction comprises a tubular plastic inner component and a reinforcing tubular fabric cover component wherein the inner component comprises at least one substantially rectangular thermoplastic layer and the cover component comprises at least one substantially rectangular fabric layer with the layers being arranged to comprise the tubular components and being fixed together by bonded portions of the thermoplastic layer to define the hose construction.Type: GrantFiled: January 24, 1983Date of Patent: October 23, 1984Assignee: Dayco CorporationInventor: Charles M. Lewis
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Patent number: 4477299Abstract: Method of bonding a floor-covering web consisting of a pile material coated on its back at least partially with a thermoplastic substance, with a backing web, the upper side of said backing web being formed at least partially by a thermoplastic substance and wherein the pile material and the backing web are moved synchronously and guided such that they run towards each other before being bonded, the underside of the floor-covering web and the upper side of the backing web thereby facing at least one heat source, that the coating on the back of the floor-covering web and the other side of the backing web are at least partially plastified by heating and wherein the heated sides of the pile material and the backing web are placed against each other and the webs bonded together.Type: GrantFiled: March 8, 1982Date of Patent: October 16, 1984Assignee: J. F. Adolff AGInventor: Hans-Joachim Friedrich
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Patent number: 4448625Abstract: An improved floor mat which may be readily folded 180.degree. upon itself. The mat includes a semi-rigid plastic surface with a transversely extending plastic strip laminated into its undersurface. The plastic strip is formed of material relatively more flexible than the overlying mat material. The mat is provided with a transverse slit overlying the laminated plastic strip which preferably extends downwardly to the upper surface of the plastic strip whereby the floor mat may be readily folded along the flexible plastic strip.Type: GrantFiled: October 2, 1981Date of Patent: May 15, 1984Assignee: Tenex CorporationInventor: Armando Carrera
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Patent number: 4430139Abstract: Apparatus is disclosed for bonding a plurality of cores of a multi-core ribbon electric cable in side-by-side relationship by heating the insulation of the cores to bond together the insulation of adjacent cores. Instead of continuously bonding the cores together along their entire length, the apparatus is designed to interrupt the bonding at predetermined intervals so that when the cable is cut at a sectional interval it is not necessary to separate the insulation of one core from the next.Type: GrantFiled: September 30, 1982Date of Patent: February 7, 1984Assignee: Lucas Industries LimitedInventor: John R. Baverstock
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Patent number: 4411722Abstract: A process for producing a non-woven fabric of cross-laminated warp web and weft webs is provided, which comprises first preparing the weft webs by ejecting a molten polymer of specified properties through orifices provided on the peripheral surface of a rotating vessel, in the lateral direction of the vessel and toward elongated stocks arranged in parallel and in cylindrical form and running around the vessel vertically in the direction of the polymer ejection; causing the ejected polymer to form adhesive filaments adhered onto the stocks to thereby fix the arrangement of the stocks; cutting open the resulting web and cutting the cut-open web by a length corresponding to a width of the above cross-laminated product; successively placing the cut webs onto the above warp web without gaps; and melting the adhesive filaments constituting the weft webs by heating the laminate to thereby bond the cross-points of the weft webs and the warp web to obtain the above product.Type: GrantFiled: July 2, 1981Date of Patent: October 25, 1983Assignee: Polymer Processing Research Institute Ltd.Inventors: Masahide Yazawa, deceased, by Hiroshi Yazawa, executor, Kazuhiko Kurihara, Hiroshi Yazawa, Yuki Kuroiwa, Shuichi Murakami
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Patent number: 4397703Abstract: A method is described for making a fiber-reinforced composite film sheet (fiber/film laminate) by continuously forming a first planar lap from a plurality of machine-direction (MD) fibers, continuously forming a second planar lap from a single fiber as transverse-direction (TD) reaches which are connected by 180.degree. loops by stretching the fiber between a horizontally diverging pair of chain assemblies, continuously straddling both laps with a pair of co-extruded films which extend sidewardly beyond the loops, vertically converging the films and fibers to form a sandwich, edge sealing the sandwich within strips close to its side edges but inwardly of the loops, lifting the loops from the chain assemblies, sidewardly smoothing and tautening the sandwich, and laminating the sandwich with heat and pressure to form the composite film sheet.Type: GrantFiled: October 1, 1981Date of Patent: August 9, 1983Assignee: Mobil Oil CorporationInventor: Paul V. Osborn
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Patent number: 4381208Abstract: In multi-core electric cable in which the cores extend in side-by-side spaced and parallel relationship, instead of producing the cable with the cores continuously interconnected by surrounding insulation so that when cut into lengths the insulation has to be pulled or cut apart in order to separate the cores for connecting, the cable is made at the outset at intervals along its length with the cores separate, never having been interconnected. This is applicable to most known methods of manufacturing flat multi-core electric cable including those in which each core has an individual insulating sheath interconnected to form the multi-core cable by the bonding of the sheaths together or to backing strip material or to both.Type: GrantFiled: August 13, 1979Date of Patent: April 26, 1983Assignee: Lucas Industries LimitedInventor: John R. Baverstock
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Patent number: 4380485Abstract: Disposable receptacles for storing articles in sterile condition and having breather means integral with the walls thereof, as well as apparatus and methods for making such receptacles and the materials therefor, are disclosed. The receptacles are fabricated of a laminate comprising a layer of breathable barrier material such as paper and a layer of thermoplastic, polymeric material such as polyethylene.The breather means may be made by heat sealing the thermoplastic layers of a pair of laminated sheets together at small, selected areas and then separating the sheets causing localized delamination of the layers and the formation of ruptured, blister-like projections in the thermoplastic layers at the heat seal positions.Type: GrantFiled: October 14, 1980Date of Patent: April 19, 1983Inventor: Samuel J. Schuster
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Patent number: 4366927Abstract: An insulation suitable for application to building spaces by pneumatic devices comprising a multitude of small pieces of low density fibrous material, the fibrous pieces being uniformly sized and having a hexahedral configuration.Type: GrantFiled: October 15, 1979Date of Patent: January 4, 1983Assignee: Manville Service CorporationInventor: William H. Kielmeyer
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Patent number: 4336092Abstract: A thread-like continuous retroreflective fiber and method of making same, comprising the steps of laminating a thin film of retroreflective material to a supporting polyester film, and then slitting the laminate to form narrow strips of retroreflective material having sufficient strength to be combined with other fibers to form a composite yarn having retroreflective characteristics, which composite yarn may then be woven, knitted, or spun to provide a fabric having retroreflective characteristics.Type: GrantFiled: March 24, 1980Date of Patent: June 22, 1982Inventor: Allan Wasserman
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Patent number: 4308087Abstract: A method for dividing an extruded tube into a plurality of smaller tubes is disclosed. The method includes the steps of flattening the tube into a web, sealing one or more longitudinal strips, or paths, along the web, and cutting generally the middle of the paths to separate the different smaller pieces. The apparatus includes a roll having a raised platen circumferentially thereof, and an air distributor to direct heated air against the web on the platen to effect a seal in the area of the platen. The web, with the sealed strips, is moved past a knife that severs the strip, and the knife is heated to prevent the accumulation of material thereon.Type: GrantFiled: February 4, 1980Date of Patent: December 29, 1981Inventor: James R. Johnson
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Patent number: 4306923Abstract: A conductive cable having a conductive core and a protective jacket of plastic material moulded around the core, also contains a guide member, in particular a guide tube, below the jacket and into which a jacket slitting tool can be inserted.By pushing the slitting tool along the tube, the jacket can easily be slit, the tool cutting through the side of the tube adjacent the jacket whereas the side of the tube adjacent the core guides the tool along the cable and protects the core from damage by the tool.If the cable contains metal screening, the guide tube is located between the screening and the jacket.Type: GrantFiled: April 23, 1980Date of Patent: December 22, 1981Assignee: W. L. Gore & Associates, Inc.Inventor: Hugh H. J. Macpherson
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Patent number: 4292108Abstract: An apparatus for severing and laying composite tape to form structural members with a shearing and compacting mechanism capable of a large variety of angular or circular severances. The severances are formed incrementally or digitally with a number of lengthwise slits of selected length. A plurality of transverse cuts are formed in the tape to intersect the slits to form a stairstepped severance. A curved chute at the discharge end of the apparatus has an endless belt to maintain the tape in alignment as it is pressed onto the work surface. The tape is compacted onto the work surface by a segmented roller system composed of several individual rollers. As the severance is reached, the rollers are selectively and individually disengaged from the work surface to correlate compaction termination with the shape of the severance.Type: GrantFiled: December 10, 1979Date of Patent: September 29, 1981Assignee: General Dynamics CorporationInventors: Olin E. Weiss, Grant L. Davis, James L. Hudson, Harlan T. Dowell
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Patent number: 4260444Abstract: One of the most effective methods of marketing a new product is to sample it, get it into the hands of millions of prospective customers so they can test it, feel it, taste it or smell it. Product sampling is practiced, however, only when it can be done economically. The present invention relates to the economical sampling of thin absorbent tissues such as toilet tissue, paper toweling, facial tissue and similar thin, lightweight products. The present invention reduces the cost of hand tipping samples of absorbent paper tissues from approximately $60.00 per 1,000 to below $9.00 per 1,000. This 85% reduction in costs will enable tissue producers to sample their products to more consumers so they can test them prior to buying. In the present invention, a printed front cover, the tissue sample or samples, and a printed back cover are delivered to a collator in continuous ribbons.Type: GrantFiled: May 14, 1979Date of Patent: April 7, 1981Assignee: Gene Fowler and Friends, Inc.Inventor: Eugene W. Fowler
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Patent number: 4257833Abstract: The longitudinal cables of a belt whose longitudinal centerline differs from that of the equipment on which it is produced and whose cable-to-cable spacing differs from that of the cable tensioner, are tensioned in a generally symmetrical pattern about the longitudinal centerline of the belt. An effective number of cables are directed from the proper edge at the comb into the center of the belt. One half of the remaining cables are moved over the same number of spaces, at the comb, toward the proper edge of the belt.Type: GrantFiled: November 19, 1979Date of Patent: March 24, 1981Assignee: The Goodyear Tire & Rubber CompanyInventor: Larry W. Jensen
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Patent number: 4256791Abstract: A web-like laminated material with a projecting edge strip is disclosed. The laminated material comprises at least one carrier layer and at least one intermediate metal foil layer and at least one thermoplastic covering layer. The edge strip projects from at least one longitudinal edge of the carrier layer such that a portion of the layer of metal foil extends from the carrier layer and a wider portion of the covering thermoplastic layer extends from the metal foil layer. A method of manufacturing the web-like laminated material having such an edge strip is also disclosed.Type: GrantFiled: November 15, 1979Date of Patent: March 17, 1981Assignee: Tetra Pak International ABInventors: Sven N. H. Holmstrom, Knut A. Rosenberg
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Patent number: 4222809Abstract: An apparatus and method are provided for removing scrap ribbons defined by cutting away opposite side edge portions of a carpeting strip.Type: GrantFiled: April 10, 1979Date of Patent: September 16, 1980Assignee: Dayco CorporationInventors: Michael E. McLean, Rufus N. Ensley, Anthony J. Alcaraz, Paul E. Caldwell
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Patent number: 4212694Abstract: The tape splicing device includes a plurality of elongated tab members extending from a flexible marginal portion and an adhesive splicing strip adjoining each tab with the marginal portion. The tab members and the marginal portion are wound about themselves in roll form such that the marginal portion is in substantial surface contact with itself, and an underlying tab member is capable of at least some surface contact with an immediate overlaying tab member.The tape splicing device is made from a laminate of adhesive tape and flexible sheet that is scored, severed, rolled and trimmed to form individual independently removable elongated tab members and adhesive splicing strips.A dispenser for the tape splicing device includes a frame that holds a roll of the tape splicing device and permits its unwinding along a bearing surface. A resilient clip on the dispenser clamps the unwound portion against the bearing surface to permit detachment of individual tabs and splicing strips.Type: GrantFiled: August 11, 1978Date of Patent: July 15, 1980Inventor: Arthur Brandwein
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Patent number: 4163684Abstract: A strip laminating method in which a first web is moved into contact with an anvil surface, severed into a plurality of strips and maintained in contact with said anvil surface. A second web having a selected striped adhesive pattern is moved into contact with said anvil surface and selected strip of said first web adheres to the adhesive stripes on said second web.Type: GrantFiled: January 27, 1978Date of Patent: August 7, 1979Assignee: RJR Archer, Inc.Inventor: John M. Kartanson
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Patent number: 4113906Abstract: The tape splicing device includes a plurality of elongated tab members extending from a flexible marginal portion and an adhesive splicing strip adjoining each tab with the marginal portion. The tab members and the marginal portion are wound about themselves in roll form such that the marginal portion is in substantial surface contact with itself, and an underlying tab member is capable of at least some surface contact with an immediate overlaying tab member.The tape splicing device is made from a laminate of adhesive tape and flexible sheet that is scored, severed, rolled and trimmed to form individual independently removable elongated tab members and adhesive splicing strips.A dispenser for the tape splicing device includes a frame that holds a roll of the tape splicing device and permits its unwinding along a bearing surface. A resilient clip on the dispenser clamps the unwound portion against the bearing surface to permit detachment of individual tabs and splicing strips.Type: GrantFiled: August 9, 1976Date of Patent: September 12, 1978Inventor: Arthur Brandwein
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Patent number: 4100004Abstract: A multifilament sheet, tow or web of acrylonitrile precursor fibres are passed through a pre-heat zone at a temperature at least 100.degree. C below the critical temperature. The material is then passed through a two-stage oxygenation zone comprising a first stage at 220.degree. to 250.degree. C and a second stage at 260.degree. to 300.degree. C. The material passes straight through the oxygenation zone and is held in sufficient uniform tension to stretch the fibres during heating and oxygenation. The oxygenated material is then passed through a carbonizing zone comprising at least one stage at 1050.degree. to 1600.degree. C under non-oxidizing conditions. The resulting carbon fibre has a mean Young's modulus of at least 25 .times. 10.sup.6 p.s.i. and a mean tensile strength of at least 250,000 p.s.i.Type: GrantFiled: February 24, 1977Date of Patent: July 11, 1978Assignee: Securicum S.A.Inventors: Maurice Moss, Colin Barry Hill, Michael Roger Rowland
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Patent number: 4096010Abstract: A method and apparatus for manufacturing optical fiber ribbons featuring an optical fiber payout arrangement for directing a plurality of optical fibers into parallel paths in a predetermined plane of travel; a vacuum assisted fiber guide for accurately positioning the fibers into a precise, coplanar parallel array; means for bringing together the arrayed fibers and a ribbon-like supporting medium to form an optical fiber ribbon with outer segments of the supporting medium extending beyond the outermost fibers; cutting means for separating the outer segments of the supporting medium for the optical fiber ribbon; and means for advancing the outer segments to thereby advance both the ribbon-like supporting medium and optical fibers in unison through the manufacturing apparatus.Type: GrantFiled: February 7, 1977Date of Patent: June 20, 1978Assignee: Bell Telephone Laboratories, IncorporatedInventors: William Lamar Parham, Morton Jefferson Saunders
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Patent number: 4093486Abstract: Disclosed is a method and an apparatus for manufacturing an even laminated product by extruding a molten thermoplastic coating material track onto a basic-material track. The edge strips of the coating material track are cooled by means of jets of heat absorbing material to keep the said edge strips of coating material from adhering to the basic-material track. The edge strips of each track are then cut off said tracks, chopped separately, and directed separately for recovery.Type: GrantFiled: August 25, 1976Date of Patent: June 6, 1978Assignee: Pekema OYInventors: Arto Honkanen, Erkki Laiho
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Patent number: 4062712Abstract: A packing laminate for use in the manufacture of disposable packages consists of a relatively thin central layer made from high-density polyethylene, two intermediate foam layers of polystyrene applied respectively to opposite faces of the central layer by means of a thermoplastic glue and two outer layers of a compact high-impact polystyrene applied respectively to the intermediate layers. The laminate is manufactured by joint extrusion of a flexible tube consisting of an inner layer of the foamed polystyrene and an outer layer of the compact high-impact polystyrene, this tube being thereafter split longitudinally into two halves to form two webs which are then joined respectively to opposite sides of the central layer of high density polyethylene following its extrusion.Type: GrantFiled: October 5, 1976Date of Patent: December 13, 1977Assignee: AB ZiristorInventor: Olof Sven Soren Stark
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Patent number: 4032385Abstract: An address master card set wherein a modified hectographic carbon paper strip is attached to the address card with readily removable drafting tape.Type: GrantFiled: April 26, 1976Date of Patent: June 28, 1977Assignee: Speedaddress, Inc.Inventors: Eduard C. Petry, John R. Stielow
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Patent number: 4017345Abstract: To produce a pile fabric, particularly a pile carpet, a fibrous batt, in which the fibres are transversely oriented, is cut into longitudinal strips which are then turned through an angle of 90.degree. about their longitudinal axes by means of pairs of conveying wires, which run in paths from oppositely located guiding grooves of a pair of input rollers to guiding grooves located side by side in the surface of a depositing roller by means of which the fibres, which are now standing on end, are applied to an adhesive backing.Type: GrantFiled: October 31, 1975Date of Patent: April 12, 1977Assignee: A/S Weston ToeppefabrikInventors: Esben Bruhn, Finn Hansen Jensen
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Patent number: 3997387Abstract: Apparatus for applying leading tips to a continuous sheet material and then cutting the same comprises a rotatable cut drum, a cutting knife contained in the cut drum and adapted to be caused to project outwardly through the surface of said cut drum at a fixed position while said knife is rotating together with the cut drum, a cam mechanism secured to a stationary member outside the cut drum for actuating said cutting knife, a single position clutch adapted to be rotated in synchronism with the cut drum, a mechanism adapted to be driven through said single position clutch for applying leading tips to the continuous sheet material, the arrangement being such that the continuous sheet material is fed along said leading tip applying mechanism and the outer periphery of the cut drum as the cut drum is rotated and that said single position clutch is energized into its connectible condition at predetermined time during the operation, while said cam mechanism is switched to a cammable condition in which it is able tType: GrantFiled: June 5, 1974Date of Patent: December 14, 1976Assignee: Nishimura Seisakusho Co., Ltd.Inventors: Toshiaki Yamaguchi, Katsunori Fujita, Keizo Narita, Takashi Sunda
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Patent number: 3989572Abstract: A method for making irrigation conduits comprises the steps of perforating a first sheet of plastic film by repetitively forming rows of holes in the cross-machine direction, positioning a fabric strip over the holes, positioning a second sheet of plastic film under the first, sealing the fabric strips and the sheets of plastic film together by forming a plurality of fused seals running in the machine direction, and slitting the seals lengthwise to separate the resulting conduits.Type: GrantFiled: December 15, 1975Date of Patent: November 2, 1976Assignee: Standard Oil Company (Indiana)Inventor: Henry D. Swartz
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Patent number: 3985599Abstract: A slit film and method of making same, the slits forming apertures defined by a plurality of axially oriented spaced apart ribbons, the film is pre-slit to define a plurality of substantially parallel interconnected ribbons and stretched axially of said ribbons to orient the ribbons and neck same down to define the open areas therebetween. Preferably, the ribbons will be interconnected at spaced apart nodes.Type: GrantFiled: March 5, 1974Date of Patent: October 12, 1976Inventors: Pierre Lepoutre, Heinz Alfred Pieniak
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Patent number: 3984271Abstract: Large volume tubular structures, particularly such structures made of reinforced plastic, are slit longitudinally and convolutely coiled to effectively reduce their volume for shipping, handling, or storing. For further volume reducing advantage a plurality of such tubular structures are coiled together in a shippable package. The slit tubes are subsequently reunited or joined together with other tubes for a variety of end uses.Type: GrantFiled: March 28, 1975Date of Patent: October 5, 1976Assignee: Owens-Corning Fiberglas CorporationInventor: Agnar Gilbu
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Patent number: 3974013Abstract: A method of insulating tubing comprising the steps of providing the tubing with a jacket of insulating material in web form, fixing the jacket with regard to its described diametrical dimensions, e.g. with a fixing casing, enclosing the jacketed tubing in a continuous tubular outer casing, e.g. by applying relative movement in the longitudinal direction thereof, and subsequently breaking the fixed state of the jacket, thereby to enable the latter to conform in shape to the inner wall of the outer casing.Type: GrantFiled: February 21, 1975Date of Patent: August 10, 1976Assignee: Granges Essen AktiebolagInventor: Erling Roos
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Patent number: 3966534Abstract: Apparatus used, inter alia, for the production of printed labels employing self-adhesive stock mounted on a backing sheet. The labels are chosen as regards content or layout and as regards width by the user, the apparatus being capable of producing labels of any kind. The blank stock is fed through a printing device and thereafter through a rotary die-cutter. The printed and die-cut stock is then fed to a location at which the backing sheet supporting the printed labels are separated from the waste paper. At said location, an abrupt change of direction in the path of travel is imparted to the backing sheet.Type: GrantFiled: January 30, 1974Date of Patent: June 29, 1976Inventor: Keith Mason Oddy
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Patent number: 3957568Abstract: 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.Type: GrantFiled: December 18, 1973Date of Patent: May 18, 1976Assignee: Permalock Company, Inc.Inventor: Martin L. Abel
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Patent number: 3945873Abstract: A process for bonding a first sheet of non-woven plexifilamentary polymeric material to a second sheet of compatible, thermoplastic, polymeric material by applying at least one stream of hot polymeric material to the second sheet of polymeric material to form a narrow continuous bead and after a time sufficient to allow the hot polymeric material of the bead to begin to fuse the first sheet of plexifilamentary polymeric material, simultaneously cooling and deforming the bead so that it permeates the first sheet of plexifilamentary polymeric material and so that its edges extend beyond the region where the polymer has permeated the first sheet of plexifilamentary polymeric material. The hot-melt polymer bonds the two sheets together in the region where it permeates the plexifilamentary material, and forms a continuous bond between the superposed layers. The structure may then be slit through the bead to form a porous tube which is particularly useful as an irrigation tubing.Type: GrantFiled: May 3, 1974Date of Patent: March 23, 1976Assignee: E. I. Du Pont de Nemours & CompanyInventor: Robert O. Osborn
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Patent number: 3939022Abstract: A method for the continuous formation of articles, e.g. one piece pipe insulator sections, from a strip-shaped felt of fibrous material, e.g. glass fibre, containing a hardenable bonding material employs stationary forming surfaces between which the strip is pulled, from beyond the forming surfaces, to deform the strip, which is then cured. The forming surfaces are readily and inexpensively replaceable for forming articles of various shapes and/or sizes.Type: GrantFiled: May 22, 1974Date of Patent: February 17, 1976Assignee: Fiberglas Canada LimitedInventor: John W. Lacon