And Subsequent Reshaping Of Corrugated Material Patents (Class 264/287)
  • Patent number: 10272379
    Abstract: A dust removal device includes: an upper cover, a base, a support body, and a dust collector. The support body couples with the upper cover and the base. The dust collector includes: a first connecting member, a second connecting member, and a dust collecting body. The dust collecting body is coupled with the first connecting member and the second connecting member and has a folded structure. When an external force enables a shape of the first dust collecting body to be changed, a distance between the first connecting member and the second connecting member is also changed. In a cleaning mode, the dust collecting body is stretched and compressed in a reciprocating manner by using a structure of the dust collecting body.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: April 30, 2019
    Inventors: Tai-Hsin Hsu, Chih-Hsiung Chiou
  • Patent number: 9067357
    Abstract: Methods for forming discrete deformations in web materials are disclosed. In some embodiments, the method involves feeding a web into an apparatus having nips that are formed between intermeshing rolls. The apparatus may be in the form of nested or other arrangements of multiple rolls, in which the web is maintained in substantial contact with at least one of the rolls throughout the process, and at least two of the rolls define two or more nips thereon with other rolls. In some embodiments, rolls can be used to expose a different side of the web for a subsequent deformation step. In these or other embodiments, the rolls can be used to transfer the web between rolls in such a manner that it may offset the rolls and/or web so that subsequent deformations are formed at a different cross-machine direction location than prior deformations.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: June 30, 2015
    Assignee: The Procter & Gamble Company
    Inventors: Jill Marlene Orr, Kirk Wallace Lake, John Joseph Curro, John Brian Strube, Keith Joseph Stone, Timothy Ian Mullane
  • Publication number: 20140322277
    Abstract: In a process and an apparatus (10) for making a solid form (11), preferably of a therapeutic or pharmaceutical product, an intermediate mass (31) of material is obtained from a respective basic layer (21) in the form of a sheet or band, the intermediate mass of material being composed of a plurality of layers of material and the solid form (11) of material being obtained from the intermediate mass (31).
    Type: Application
    Filed: April 27, 2012
    Publication date: October 30, 2014
    Inventors: Dario Rea, Giorgio Manaresi
  • Patent number: 8557162
    Abstract: A mechanical activation system has a first activation member, a second activation member, an activation zone, and a non-slip zone. The first activation member has a first plurality of teeth, and the second activation member has a second plurality of teeth. The first plurality of teeth is capable of intermeshing with the second plurality of teeth. The activation zone includes a first portion of the first plurality of teeth and a first portion of the second plurality of teeth. The first portion of the first plurality of teeth and the first portion of the second plurality of teeth include teeth having continuous tips. The first non-slip zone includes a second portion of the first plurality of teeth or a second portion of the second plurality of teeth. The second portion includes a tooth having a discontinuous tip.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: October 15, 2013
    Assignee: The Procter & Gamble Company
    Inventor: Uwe Schneider
  • Patent number: 8308885
    Abstract: A process of making a multi-layered product having an interior layer including spaced honeycomb core sections. The interior layer is treated or plastically deformed in selected areas and then folded to create spaced honeycomb sections at desired locations and of desired sizes. A generally flat web of material used to make the interior layer extends between the honeycomb sections. Outer protective skins are applied to exterior surfaces of the interior layer to create a multi-layered material which is then cut to size.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: November 13, 2012
    Assignee: Bradford Company
    Inventor: Judson A. Bradford
  • Patent number: 8075832
    Abstract: A solution casting apparatus includes a drive roller as a conveying means. The drive roller conveys a polymer film peeled from a belt, the polymer film still containing a solvent. The drive roller has corrugation valleys and corrugation peaks formed on a peripheral surface along a circumferential direction of the drive roller. Each of the corrugation valleys and the corrugation peaks has a substantially semicircular cross section. The corrugation valleys and the corrugation peaks are disposed alternately in an axial direction of the drive roller. A pitch Pv between the corrugation valleys and a pitch Pm between the corrugation peaks are in the range of 0.01 to 2 mm, and a height Hv-m from a lowest point of the corrugation valley to a highest point of the corrugation peak is in the range of 0.01 to 1 mm. A curvature radius Rv of the corrugation valley and a curvature radius Rm of the corrugation peak are in the range of 0.1 to 0.5 mm.
    Type: Grant
    Filed: January 2, 2009
    Date of Patent: December 13, 2011
    Assignee: FUJIFILM Corporation
    Inventors: Ryuhei Yoshida, Shinji Hikita, Hiroki Sato
  • Patent number: 7968036
    Abstract: There is disclosed a method for introducing a helical formation (11) into a flexible tubular material (12). The material (12) is supported together with a surrounding helical former (13) so as to deform the material (12) to have a helical indentation (11) corresponding to the shape of the former (13). The material (12) is then set in that configuration and the former (13) is removed.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: June 28, 2011
    Assignee: Tayside Flow Technologies Limited
    Inventors: John Graeme Houston, Peter Arno Stonebridge, John Bruce Cameron Dick, Robert Gordon Hood, Allana Johnstone, Christophe Emmanuel Sarran, Craig McLeod Duff
  • Patent number: 7857609
    Abstract: A mechanical activation system has a first activation member, a second activation member, an activation zone, and a non-slip zone. The first activation member has a first plurality of teeth, and the second activation member has a second plurality of teeth. The first plurality of teeth is capable of intermeshing with the second plurality of teeth. The activation zone includes a first portion of the first plurality of teeth and a first portion of the second plurality of teeth. The first portion of the first plurality of teeth and the first portion of the second plurality of teeth include teeth having continuous tips. The first non-slip zone includes a second portion of the first plurality of teeth or a second portion of the second plurality of teeth. The second portion includes a tooth having a discontinuous tip.
    Type: Grant
    Filed: July 26, 2006
    Date of Patent: December 28, 2010
    Assignee: The Procter & Gamble Company
    Inventor: Uwe Schneider
  • Patent number: 7740786
    Abstract: Necked nonwoven webs having improved cross-directional uniformity are made by a process which includes the step (prior to neck stretching) of corrugating the nonwoven web to reduce its width from an initial width A to a reduced corrugated width B. The cross-directional uniformity is optimized as the corrugated width B approaches the ultimate width C of the necked nonwoven web.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: June 22, 2010
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Robert J. Gerndt, David W. Hall
  • Patent number: 7670528
    Abstract: The present disclosure is directed to systems and methods of manufacturing filter cartridges are disclosed, the system including a tube of laminated and seamed filter media, a media unwind mechanism, a mandrel having a starting point operatively positioned proximate the media unwind mechanism, structure, operatively positioned proximate the mandrel, for feeding the tube of laminated and seamed filter media into the starting point of the mandrel, structure, operatively positioned in the mandrel, for pressurizing the tube of laminated and seamed filter media with a gas, structure, operatively positioned in the mandrel, for expanding the tube of laminated and seamed filter media into a substantially cylindrical shape as the tube of laminated and seamed filter media passes over the mandrel, a pleater mechanism, operatively positioned proximate the mandrel, a blade mechanism, operatively associated with the pleater mechanism, for alternately engaging the tube of laminated and seamed filter media with the blade mec
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: March 2, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Mahesh Z. Patel, Jonathan C. Taylor, Gary W. Schukar
  • Patent number: 7235115
    Abstract: The method of forming pleated filter media includes providing a generally planar web of filter material, folding the web to form a pleated web having a plurality of fold lines, arranging the plurality of pleats in a first spaced configuration defined by a first distance between adjacent pleat tips, applying a continuous strand of adhesive to the web, and adjusting the arrangement of the plurality of pleats into a second spaced configuration defined by a second distance between adjacent pleat tips. The web has a front face and a rear face. Each fold line is intermediate oppositely sloping first and second wall surfaces. The plurality of fold lines form a plurality of pleats having a first plurality of pleat tips and a second plurality of pleat valleys. The second distance is different from the first distance.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: June 26, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Dean R. Duffy, Donald E. Young, Lowell E. Christensen, Douglas C. Sundet
  • Patent number: 7097803
    Abstract: The present invention is to provide a process of making a corrugated net material including the following steps. First prepare a net material with an adequate length, and then heat and soften the net material by means of a heating element. March the soften net material through a gap formed by two press rollers which rotate in relative direction such that the softened net material is pressed by the two press rollers flatly. March the pressed flat net material continuously into a vessel such that the flat net material is cumulated in the vessel and squeezed by itself to form a plurality of non-directional bends. Lastly, release the squeezed net material from the vessel such that the corrugated net material is thus obtained.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: August 29, 2006
    Inventor: Che-Yuan Chang
  • Patent number: 6932850
    Abstract: A filter may comprise a plurality of pleats, at least one pleat including a pair of pleat legs and pleat tip region. In some embodiments, a thickness of pleat tip region at a point spaced about one to four pleat leg thicknesses from the end of the pleat tip region may be less than or equal to about twice the pleat leg thickness or may be less than or equal to a distance between corresponding points on opposing outer surfaces of the pleat legs. A filter may comprise a pleated structure having a plurality of pleats. In some embodiments, the pleated structure may have more than one layer and at least one of the pleats may have a reformed pleat tip region. In other embodiments, the pleated structure may have a pair of pleat legs and at least one of the pleats may have a reformed pleat tip region and contacting pleat legs. A filter may comprise a plurality of pleats, at least one pleat including a pleat tip region having contacting inner surfaces.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: August 23, 2005
    Assignee: Pall Corporation
    Inventors: Thomas C. Welch, Joseph Verschneider, John D. Miller
  • Patent number: 6818167
    Abstract: In a method of manufacturing a rubber crawler through a first vulcanization step and a second vulcanization step using an upper mold, a middle mold and a lower mold, at least the middle mold is heated at each vulcanization step, and a vulcanizing circumferential length at the first vulcanization step is made longer than that at the second vulcanization step, and the second vulcanization step is carried out at a state that each end portion of the crawler part formed at the first vulcanization step is positioned by at least one pitch rate in each mold at the second vulcanization step and the distance between the upper and lower molds is made larger than that in the first vulcanization step.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: November 16, 2004
    Assignee: Bridgestone Corporation
    Inventor: Yasuaki Fujita
  • Patent number: 6767493
    Abstract: It is to provide a method of manufacturing a rubber crawler which enhances a degree of freedom in the handling in a vulcanization-shaping of a crawler part and largely improves vulcanization shapability and operability and facilitates an arrangement of an auxiliary device or the like.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: July 27, 2004
    Assignee: Bridgestone Corporation
    Inventor: Yasuaki Fujita
  • Patent number: 6726870
    Abstract: A method for making a bulky web. A web is fed in a first direction. The web is subjected to incremental stretching in a direction perpendicular to the first direction to provide a bulky web. The bulky web is then stabilized to provide a stabilized bulked web, Optionally, the bulky web may be gathered after it has been subjected to incremental stretching.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: April 27, 2004
    Assignee: The Procter & Gamble Company
    Inventors: Douglas Herrin Benson, John Joseph Curro
  • Patent number: 6623587
    Abstract: The present invention relates to a method of making a fibrous loop member which can be used in disposable absorbent articles such as diapers, adult incontinence devices, sanitary napkins, and the like. The fibrous loop member includes a backing and a sheet of fibers which has arcuate portions projecting from the backing.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: September 23, 2003
    Assignee: The Procter & Gamble Company
    Inventors: Jorg Muller, Gabriele Stiehl
  • Patent number: 6511623
    Abstract: A manufacturing method for a filter element having a filter portion and a flange portion formed along an outer periphery of the filter portion to protrude outwardly. First, a corrugated intermediate product having plural ridges of the filter element is formed by folding. Next, the flange portion is formed integrally with the filter portion by pressing an outer peripheral portion of the intermediate product at a high temperature. While the flange portion is formed, each of sides of the intermediate product extending in parallel with the ridges is restricted to a position corresponding to a shape of the filter element by plural forming jigs. Therefore, sides of the flange portion extending in parallel with the ridges are formed simultaneously when the flange portion is formed and do not need to be trimmed after forming. As a result, a material of the filter element is less wasted.
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: January 28, 2003
    Assignee: Denso Corporation
    Inventors: Noriya Ueda, Ikuo Mochizuki
  • Patent number: 6506329
    Abstract: The present invention provides a stable material having enhanced extensibility and a method for making the same. A neckable material is fed in a first direction. The neckable material is subjected to incremental stretching in a direction perpendicular to the first direction. A tensioning force is applied to the neckable material to neck the material in a direction perpendicular to the first direction. The necked material is then subjected to mechanical stabilization to provide a stabilized extensible necked material. The stabilized extensible necked material is then passed between the peripheral surface of a cylinder which is driven in rotating motion and a device for pressing the stabilized extensible necked material against the peripheral surface of the cylinder. A retarding member retards the passage of the stabilized extensible necked material and directs the material away from the peripheral surface of the cylinder.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: January 14, 2003
    Assignee: The Procter & Gamble Company
    Inventors: John Joseph Curro, Douglas Herrin Benson
  • Patent number: 6497754
    Abstract: A pleated filter is provided with electrically conductive fibrous material that releases ions to improve trapping efficiency. The edges of folded filter media are rendered emitting as by attaching conductive strings to the edges of the folds. The ends of the fibers in the strings are left exposed and, by applying high voltage on these strings, ions may be produced which charge dust particles to improve the filter's efficiency. Alternately, the pleated medium itself provides ion-emitting fiber ends along folded edges that have been rendered conductive.
    Type: Grant
    Filed: April 4, 2001
    Date of Patent: December 24, 2002
    Inventor: Constantinos J. Joannou
  • Patent number: 6461559
    Abstract: A method for the shaping of strip-like films (2) involves the following steps: a) A film strip (2) is continuously forwarded from a film supply to shaping units. b) The film strip (2) is pleated in a first shaping unit (11). In this, edges (21, 22) are produced which form an angle of inclination to the edges (36) of the film strip having a constant value. c) After a forwarding of the pleated strip (2′) to at least one further shaping unit (12) the former is reshaped in one or more steps. In this the edges (21, 22) are eliminated through plastic deformation by means of a roller pair (120) in edge zones (30b) outside of a middle zone (30a) of the strip and are at the same time replaced by curved edges (31, 32). The angles of inclination of the curved edges continuously increase from the middle zone to the strip edges.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: October 8, 2002
    Assignee: Sulzer Chemtech AG
    Inventor: Martin Bär
  • Patent number: 6187381
    Abstract: A process for preparing silica gel is disclosed. The silica gel is produced by immersing a base in silica sol, drying the impregnated base in a mixed solution of an alkali silicate and an alkali hydroxide, removing the impregnated base form the mixed solution, heating the impregnated base, and subsequently treating the impregnated base with an acid. A sufficient amount of silica gel for use as a dehumidifying element can be produced through a single series of treatments.
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: February 13, 2001
    Assignee: Nichias Corporation
    Inventors: Jun Tanabe, Yumiko Furuya
  • Patent number: 5733403
    Abstract: This invention relates to a product packaging material and method, and in particular to a product packaging material (27) formed from a length of rolled corrugated paper (20) and a method of manufacture therefor. There is provided a packaging material comprising corrugated paper (20), the corrugated paper including non-sinusoidal corrugations (16, 18, 72). There is also provided a method of making a packaging material of multi-layer corrugated paper (27) including the steps of forming corrugated paper (20) having a sheet with sinusoidal corrugations (42), and compressing the sheet to destroy the sinusoidal form of at least some of the corrugations.
    Type: Grant
    Filed: November 28, 1995
    Date of Patent: March 31, 1998
    Assignee: Aston Packaging Limited
    Inventor: Timothy Corben Morley
  • Patent number: 5580409
    Abstract: Compositions and methods for manufacturing containers from sheets having a hydraulically settable matrix. Suitable compositions are prepared by mixing together a hydraulic binder, water, and appropriate additives (such as aggregates, fibers, and rheology-modifying agents) which impart predetermined properties so that a sheet formed therefrom has the desired performance criteria. Hydraulically settable sheets are formed from the mixture by extrusion, then calendering the sheets using a set of rollers and then drying the sheets in an accelerated manner to substantially harden the sheets. The resulting hydraulically settable sheets may have properties substantially similar to sheets made from presently used materials like paper, cardboard, polystyrene, or plastic. The sheets can be laminated, corrugated, coated, printed on, scored, perforated, cut, folded, rolled, spiral wound, molded, assembled and seamed to mass produce articles of manufacture from the sheets such as food and beverage containers.
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: December 3, 1996
    Assignee: E. Khashoggi Industries
    Inventors: Per J. Andersen, Simon K. Hodson
  • Patent number: 5577989
    Abstract: A method for forming a corrugated paperboard container and a container made therefrom having a first layer of flat paperboard to which is attached a second layer of contoured paperboard, said contoured layer having a plurality of flutes, each said flute including a first flute tip and a second flute tip, the flute rise being substantially vertical at the midpoint between said flute tips, said forming method comprising, placing the corrugated paperboard into a stamping die, the stamping die having a male die and a female cavity shaped in the shape in which the paperboard is to be formed; pressing the paperboard between the die and the cavity to apply a pressure to the paperboard; applying heat to the paperboard simultaneously with said application of pressure; and removing said die from the cavity.
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: November 26, 1996
    Assignee: Newark Group Industries, Inc.
    Inventor: Robin P. Neary
  • Patent number: 5468033
    Abstract: Impact-absorbing bumper mount with two telescoping tubes, in particular for motor vehicles, to decelerate a vehicle via damping forces when the vehicle strikes an obstacle, whereby a work piston is guided in a sealed manner in one of the tubes, and with which, in addition to a weight reduction, it is also possible to simplify the fabrication process, reduce costs and achieve sufficient corrosion protection. The invention teaches that this problem can be solved by tubes which have recesses on their inside and outside, and which are coated with a polymeric material.
    Type: Grant
    Filed: November 26, 1993
    Date of Patent: November 21, 1995
    Assignee: Fichtel & Sachs AG
    Inventors: Wolfgang Dohrmann, Metin Ayyildiz
  • Patent number: 5296065
    Abstract: A forming assembly comprises two presser members (22,24) each having a corrugated surface for receiving a workpiece made up of generally diamond-shaped pockets (10). Each presser member is made up of sections (22a,22b; 24a, 24b) mounted on slide rods (38) for movement between a spaced-apart position, in which a workpiece can be located therebetween, and a closed position, movement into which, while the workpiece is held between the presser members, is effective to compress the workpiece laterally. For holding the pockets in their diamond shape formers (20) are inserted therein. A flange (18) is formed at one end of the workpiece and integral therewith by pressing outwardly folded material against a lateral end face of the presser members (22,24) using a presser plate (52). This forming method is especially suitable for forming self-supporting filter units.
    Type: Grant
    Filed: September 24, 1992
    Date of Patent: March 22, 1994
    Assignee: British United Shoe Machinery Limited
    Inventor: Anthony T. Greatorex
  • Patent number: 5100496
    Abstract: An improved system for fabricating convolutely wound tubes includes a supply roll support for supporting a large supply of paperboard, an adhesive applicator for receiving paperboard from the supply roll and applying a coating of adhesive to one side thereof, a cutting station for cutting the paperboard across its length to form sheets of paperboard, and a winding station including a mandrel about which cut sheets of adhesive bearing paperboard are wound into a tubular configuration. As the paperboard is drawn from the supply roll, one of its edges passes sequentially through three corrugating nip rolls, which alternately deform the material of the edge to render it more pliable and flexible. This flexible edge, then, becomes the trailing edge of paperboard sheets that are wound into tubes such that the edge can be easily conformed to the contour of and adhered to the outer surface of the finished tube.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: March 31, 1992
    Inventor: Mark Mitchell
  • Patent number: 5064598
    Abstract: A process and apparatus for the manufacture of a pleated filter insert made of a thermoplastic material. The pleat walls are maintained at a distance with the filter pleats open in the direction of outflow of the filter insert by elongated ribs made of the filter material itself. The tape-like filter material is gathered in a first process step. The elongated ribs are produced by means of tension-free, permanent shaping of the gathered filter material, heated to a temperature which is below the shrinking temperature and above the deformation temperature of the filter material, between the jaws of a shaping device. The intermediate areas of the filter material intended for the forming of pleat wall edges are heated by at least one heater jaw to a temperature which is between the deformation temperature and the melting temperature until the irregularities of the filter material in the intermediate area have been smoothed out.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: November 12, 1991
    Inventor: Hanspeter Seiler
  • Patent number: 4980003
    Abstract: U.S. Pat. No. 4,615,084 disclosed and claimed a method for making multiple-hook fasteners and the resulting multiple-hooks. A strand of stiffly flexible bendable settable polymeric plastic material is zig-zagged back and forth cross a centerline, with sharply doubled-back bends at each zig and zag. The present method enables the doubled-back bends in such a plastic monofilament to be shaped sharply by initially causing the strand to be nicked or scooped at predetermined intervals to predetermined depth and length by at least one laser beam. The pre-nicked strand is used by feeding it endwise at a predetermined feed rate into a zigzag station wherein it is confined and guided by side walls diverging in the downstream direction and appropriately configured to shape the pre-nicked strand into the desired zigzag configuration. In the zigzag station, its leading, i.e. downstream, portions are slowed down relative to the predetermined feed rate of its incoming, i.e.
    Type: Grant
    Filed: February 17, 1988
    Date of Patent: December 25, 1990
    Assignee: Erblok Associates
    Inventors: George H. Erb, Susan E. Beard
  • Patent number: 4921643
    Abstract: A machine and process for a web of material employing two side-by-side sets of spaced apart driven disks adapted to rotate respectively in opposite directions about two spaced apart parallel axes, the axes being sufficiently close that peripheral margins of the disks of one set run between the peripheral margins of the disks of the other set in a mated relationship, the sets of disks mutually defining a series of web driving regions spaced apart in a direction parallel with the axes, with successive web driving regions, offset from one another, open channels between said disks providing, with the driving regions, a width-wise continuous, non-linear cross-section corridor through which the web passes, the driving regions adapted to impart to a web led lengthwise into the corridor, crosswise tension in the web, pulling the web about the edges of the disks, the tension enabling the disks to apply forward driving force to the web and retarding means closely disposed to the driving regions located to apply retardi
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: May 1, 1990
    Assignee: Richard R. Walton
    Inventors: Richard R. Walton, George E. Munchbach
  • Patent number: 4604792
    Abstract: The method of making the diaphragm includes pressing on the front face of a film at spaced apart areas to deform it progressively into a series of closely-spaced generally U-shaped projections. A manufacturing device presses the sides of the projections inwardly to rigidify them. The transducer magnet assembly includes a series of elongated magnet pole-piece strips which confine magnets and are arranged in parallel spaced-apart rows with the ends thereof fitted into transverse elongated grooves extending within a pair of elongated cross-piece end members. The driver is fixed together in a precise manner by flowing an adhesive material into the grooves, and then by allowing such material to harden.
    Type: Grant
    Filed: December 20, 1984
    Date of Patent: August 12, 1986
    Assignee: LFF & Associates
    Inventor: David A. Larson
  • Patent number: 4594162
    Abstract: A filter for separating constituent components of fluids includes a plural-layer sheet-like member which is multiply pleated to provide layers of the same or different porosity or to provide structural support layers for pleating a soft or membrane-like filter layer. The multiple layers may be pre-joined or delivered from individual locations to a pneumatic conveyor passage of predetermined cross-section through which the adjacent layers are conveyed by a conveyor gas. The layers are crimped to form pleats by withdrawing the material at a lower linear speed than that at which it is supplied to the passage. Pleating is facilitated by venting the conveyor gas at a passage section of enlarged cross-section. The pleating material is subjected to a hot gas, such as steam, and then cooled by a cooling gas to effect bonding of the layers in the pleated state.
    Type: Grant
    Filed: February 13, 1984
    Date of Patent: June 10, 1986
    Assignee: American Filtrona Corporation
    Inventor: Richard M. Berger
  • Patent number: 4400338
    Abstract: The method of making a deformable sealant strip having a continuous strip of rigid corrugated material embedded longitudinally within mastic material wherein a continuous linear-rigid spacer is first corrugated and then fed in this condition into an extruder cross head wherein such rigid corrugated spacer is encompassed by a mastic. The strip is coiled for subsequent use in retrofitting double pane windows as well as making dual insulated windows. The extruder that receives the rigid corrugated spacer in its crosshead provides a mastic that surrounds and encompasses the spacer without deforming it.
    Type: Grant
    Filed: February 16, 1982
    Date of Patent: August 23, 1983
    Assignee: Tremco, Incorporated
    Inventor: John R. Rundo
  • Patent number: 4289725
    Abstract: The invention relates to a longitudinally creped paper web for use in the manufacture of filter rods. In order to improve the filtering capacity and resistance to flow therethrough without weakening filter plugs formed from the web in respect of resistance to radial crushing the longitudinally creped web is provided wth linear indentations transversely thereof which are sufficiently closely spaced one from the other longitudinally of the web to provide consistency in draw of short length sections cut from filter plugs made from the web. The invention also relates to the process and apparatus for forming such a filter web using co-operating spaced rollers for forming controlled linear compression zones extending transversely of the web, at least one of these two rollers being provided with ribs extending at least approximately axially of the roll.
    Type: Grant
    Filed: June 13, 1980
    Date of Patent: September 15, 1981
    Assignee: Celfil Company Establishment
    Inventors: Paul A. Muller, Hans Muster
  • Patent number: 4279679
    Abstract: An insulating corrugated member is provided by two sheets having identical corrugations, at least one of the sheets being of a thermoplastic material and having its edges deformed, the deformed edges being adhesively secured to the other sheet. The edges of the thermoplastic sheet are deformed on a mold which is prepared by using, as a template, a sheet having identical corrugations by the application of heat and differential gas pressure to opposite sides of the thermoplastic sheet.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: July 21, 1981
    Assignee: Pierdeed Limited
    Inventor: Elvin N. Sheppard
  • Patent number: 4248822
    Abstract: In the manufacture of a moisture-permeable covering film for absorbent material a thermoplastic film is provided with capillary-like protrusions by embossing, after which openings are produced in the ends of said protrusions. Embossing is effected with simultaneous cooling of the film, so that the ends of the protrusions are oriented in the thermo-elastic temperature range. By a renewed heating of the ends of the protrusions the openings are formed by shrinking, which also causes the edges of the openings to be thickened.The apparatus consists of an engraved metal cylinder and a counter-roller for the embossing step and of a heated roller, which is pressed against the ends of the embossed protrusions on the metal cylinder.
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: February 3, 1981
    Assignee: Lever Brothers Company
    Inventor: Theo Schmidt
  • Patent number: 4223059
    Abstract: A non-woven web of synthetic fibers is selectively stretched in incremental portions in a first and second station wherein the first and second station are provided with sets of rolls having grooves parallel and perpendicular, respectively, to the axis of each set of rolls to form a bi-axially stretched web. One groove pattern of the rolls is generally a sinosoidal wave with distances between grooves being less than 1.0 millimeters times the web basis weight in grams per square meter.
    Type: Grant
    Filed: April 27, 1978
    Date of Patent: September 16, 1980
    Assignee: Biax Fiberfilm Corporation
    Inventor: Eckhard C. A. Schwarz
  • Patent number: 4101625
    Abstract: A method in which a band formed of essentially unoriented thermoplastic polymeric material is provided with a transverse cross-section which is of corrugated configuration and is generally uniform in thickness, with at least portions of such band being compressed so as to orient polymer molecules in the transverse direction of the band, afterwhich the band is elongated to orient polymer molecules thereof also and predominantly in the longitudinal direction of the band. The resulting strapping possess a high tensile strength, improved resistance to longitudinal splitting, good longitudinal stiffness, a reduced tendency to shell when wound as a roll, reduced surface abrasion during transit through strapping equipment and provides for high strength heat seals.
    Type: Grant
    Filed: January 10, 1977
    Date of Patent: July 18, 1978
    Assignee: FMC Corporation
    Inventor: Harold A. Haley
  • Patent number: 4012932
    Abstract: A machine for manufacturing herringbone-pleated structures of a type particularly suitable for use in cylindrical or flat filter elements. The machine includes consecutive feeding forming and bunching components by which a continuous band of flat sheet material, which may be pre-pleated longitudinally, is fed between a pair of endless forming assemblies which cooperate to form continuously a roughed-out shape of the final herringbone-pleated structure and which also advance to a bunching means positioned downstream from the forming assemblies. The bunching means operates to tighten up the folds of the roughed-out shape both longitudinally and transversely to provide the final structure.
    Type: Grant
    Filed: June 5, 1975
    Date of Patent: March 22, 1977
    Assignee: Marc Wood S.A.
    Inventor: Lucien Victor Gewiss
  • Patent number: 3966912
    Abstract: A tobacco smoke filter element for use in cigarettes, cigarette holders, cigar holders or pipes is formed from a bonded non-woven fabric composed wholly or partly of wool fibers. It is preferred that the content of wool fibers shall be as high as is economically feasible. It is preferred that in the case of a filter for a cigarette the filter is made by converting a web of bonded non-woven fabric to a filter rod of substantially circular cross-section.
    Type: Grant
    Filed: August 1, 1975
    Date of Patent: June 29, 1976
    Assignees: Rothmans of Pall Mall (Australia) Limited, Lantor of Australia Pty. Ltd.
    Inventors: Graeme David Fair, Derek Lesley Arthur Hasmall, William Patrick Ryan, Edwin John Sellman
  • Patent number: 3966646
    Abstract: A method of manufacturing a body comprising the steps of forming a single strip of material with at least one plain region and at least one region of protrusions, such as corrugations, bumps or ridges. The single strip of material is then laid on itself in a manner so as to provide two or more layers of the material and locate a plain region of one layer alongside a region of protrusions of an adjacent layer. The laying step may be accomplished by winding the strip into a coil.
    Type: Grant
    Filed: October 29, 1974
    Date of Patent: June 29, 1976
    Assignee: United Kingdom Atomic Energy Authority
    Inventors: Michael Lesney Noakes, Wilfred George Caesar, William Henry Holland, Norman Herbert Hancock
  • Patent number: 3966379
    Abstract: Apparatus for making corrugated flexible tubing such as the suction hose used in a vacuum cleaner comprises an extruder which extrudes tubular plastic material with annular corrugations, followed by a higher-speed haul-off device, a heater, a cooler, and a lower speed haul-off device, all placed to act on the corrugated tube as the latter is passing over a mandrel, so that the corrugations become compressed to a close-pitched condition by the speed differential of the haul-off devices, the condition being set by the action of the heater and cooler.
    Type: Grant
    Filed: December 12, 1973
    Date of Patent: June 29, 1976
    Assignee: Compoflex Company Limited
    Inventor: Patrick William O'Brien