Density Or Compression Of Components Patents (Class 428/218)
  • Patent number: 5972487
    Abstract: Absorbent structures comprising a continuous matrix of hydrophilic fibers, having dispersed therein particles of a water-insoluble hydrogel, are disclosed.
    Type: Grant
    Filed: August 31, 1987
    Date of Patent: October 26, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Elisabeth Hendrika Duenk, Walter Jakob Fischer
  • Patent number: 5972444
    Abstract: This invention relates to an improved shrink film having balanced properties. In particular, this invention relates to a biaxially oriented polyolefin shrink film made from a particular polymer mixture which includes a first ethylene polymer component having a single differential scanning calorimetry (DSC) melting peak or a single Analytical Temperature Rising Elution Fractionation (ATREF) peak and a second ethylene polymer component having one or more DSC melting peaks, wherein the density differential between the two component polymers about 0 to about 0.03 g/cc. Improved properties include increased shrink responses, wide orientation windows, higher modulus and high softening temperatures.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: October 26, 1999
    Assignee: The Dow Chemical Company
    Inventors: Rajen M. Patel, Jacquelyn A. deGroot
  • Patent number: 5972474
    Abstract: An aromatic polyamide and/or aromatic polyimide film suitable as a support in a magnetic recording medium excellent in runnability and scratch resistance and good in S/N ratio comprises an aromatic polyamide and/or aromatic polyimide as a main component, with particles present in the film, which film has characteristics which satisfy the following formulae:10 nm.ltoreq.dmax.ltoreq.300 nm (1)3.ltoreq..rho.(dmax)/.rho.(dmin).ltoreq.100 (2)or10 nm.ltoreq.dmax.ltoreq.300 nm (3)3.ltoreq..rho.(dmax)/.rho.(d").ltoreq.100 (4).rho.(dmax)/.rho.(dmin)>100 (5)where dmax is the depth from a first surface of the film at which the particle density shows the first maximal value; dmin is the depth at which the particle density shows the first minimal or minimum value in a range from dmax to 1 .mu.
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: October 26, 1999
    Assignee: Toray Industries, Inc.
    Inventors: Toshihiro Tsuzuki, Masanori Sueoka, Nobuaki Itoh
  • Patent number: 5968629
    Abstract: An acoustic absorbing component comprising a fiber-reinforced thermoplastic resin expanded body having a percentage of void not less than 50 vol %, and a resin molded body. The fiber-reinforced thermoplastic resin expanded body is fused under a pressure to at least a part of a surface of said resin molded body.
    Type: Grant
    Filed: May 16, 1996
    Date of Patent: October 19, 1999
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventors: Syohei Masui, Satoru Funakoshi
  • Patent number: 5962092
    Abstract: A multilayer film comprises: a first layer comprising a first homogeneous ethylene/alpha-olefin copolymer; a second layer comprising a polyolefin; and a third layer comprising a second homogeneous ethylene/aipha-olefin copolymer. The second layer is between the first layer and the third layer, the second layer is chemically different from the first layer and the third layer, and the multilayer film has an O.sub.2 -transmission rate of from about 500 to 50,000 cc/m.sup.2 /24 hr STP. One outer layer of the film comprises an antifog agent on the outer surface thereof. Also disclosed is a package made from the film. The film is especially suitable for the packaging of oxygen-sensitive products, such as lettuce, and resists fogging up on the inside surface of the film forming the package. Preferably, the package has printing on the outside surface of the film, with the print having good adhesion to the film.
    Type: Grant
    Filed: October 13, 1995
    Date of Patent: October 5, 1999
    Assignee: Cryovac, Inc.
    Inventors: Betsy P. Kuo, Mendy J. Walden
  • Patent number: 5955205
    Abstract: Multilayer thermoplastic stretch wrap film having substantial one-sided cling properties is made without the use of polymers with high levels of n-hexane extractables, dissimilar polymer chemistries, or low molecular weight tackifiers. The reverse or cling layer comprises at least one homogeneously branched ethylene polymer composition having a density of about 0.90 g/cc or less and the obverse or non-cling layer comprises an propylene or ethylene polymer composition having a density greater than 0.90 g/cc. The multilayer film is particularly useful for load palletization end-use applications.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 21, 1999
    Assignee: The Dow Chemical Company
    Inventors: David B. Ramsey, Kenneth B. Stewart
  • Patent number: 5948520
    Abstract: A support device for a computer mouse (mouse pad) comprises, extending over the lower foil made of foam material, at least one thin, colored liquid layer which is enclosed between two foils welded together along the edge in a liquid-tight manner and is visible through the transparent foil or foils. The liquid occupies the available cavity only incompletely and it spreads out in puddle-like patterns to define void spaces which change continuously due to the actuation of the mouse, thereby providing the mouse pad with an optically interesting appearance.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: September 7, 1999
    Assignee: Hirsch & Partner GmbH
    Inventor: Karl Hirsch
  • Patent number: 5942316
    Abstract: The invention concerns a multi-layer refractory wear body having a wear layer being exposed to a direct thermal, mechanical and/or metallurgical attack, and at least another layer of a ceramic material having different physical properties.
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: August 24, 1999
    Assignee: Didier-Werke AG
    Inventors: Ernst Luhrsen, Andreas Schuler, Robert Sheriff, Martin Wiesel
  • Patent number: 5938878
    Abstract: Polymer structures having a laminated surface and enhanced physical properties that can be used for packaging, athletic gear (e.g., padding, water sport equipment), gaskets, and protective garments are described. The structures include a core of a relatively high density material and one or more layers laminated to the surfaces of the core material of relatively low density polymer foam. The structures can be stiff or flexible. The foam layers improve the softness of the surfaces of the core material.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: August 17, 1999
    Assignee: Sentinel Products Corp.
    Inventors: Robert F. Hurley, Matthew L. Kozma, John D. Bambara, Scott C. Smith, Richard Bambara
  • Patent number: 5935695
    Abstract: A joint filler for use in joints between structural elements comprising: at least one layer of a substantially non-compressible, moisture blocking material; at least two layers of a compressible and resilient, moisture blocking material, each layer being in surface to surface contact with a layer of non-compressible material; the layers of material are combined to form a strip of interleaved compressible and non-compressible layers, and in an uncompressed state thicker than a joint.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: August 10, 1999
    Assignee: Emseal Corporation
    Inventor: Konrad Baerveldt
  • Patent number: 5932331
    Abstract: A trim panel for use in automotive trim applications is made from a laminate of a thermoformable support layer and an A-side layer made of vinyl or cloth or similar material. The laminate is thermoformed to impart permanently the contour of a rigid substrate to which the panel will be attached. The support layer retains the desired contour without the use of other materials. The support layer is made of an intermediate layer and a bottom layer of thermoformable foam. The foam layers have different densities to allow selection of the hand or touch of the A-side layer.
    Type: Grant
    Filed: October 8, 1998
    Date of Patent: August 3, 1999
    Assignee: Simco Automotive Trim, Inc.
    Inventors: Vincent H-H Jones, David L. Simon
  • Patent number: 5932320
    Abstract: The present invention relates to a polyester film for decorative plate or decorative sheet, which comprises a base polyester film and a coating layer formed on at least one surface of said base film, and which has an optical density of 0.1 to 5.0 and longitudinal and transverse heat shrinkage percentages of not less than -10.0% and not more than +10.0% after said film is heat-treated at 180.degree. C. for 5 minutes.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: August 3, 1999
    Assignee: Mitsubishi Polyester Film Corporation
    Inventors: Nariaki Okajima, Takatoshi Miki, Kenji Yoshihara
  • Patent number: 5919556
    Abstract: A multiple ply tissue paper structure is disclosed. The multiple ply tissue paper has plies having different texture values. In one embodiment, the multiple ply tissue paper has two plies having different calipers and macrodensities. In another embodiment, the multiple ply tissue paper has three plies, including a relatively untextured ply disposed between two relatively highly textured plies.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: July 6, 1999
    Assignee: The Procter & Gamble Company
    Inventor: Steven Lee Barnholtz
  • Patent number: 5916681
    Abstract: A particulate insulating material is disclosed which includes a sound absorptive central core having a density of at least 1.0 grams/cm.sup.3, and an outer less dense thermally insulating coating provided at least partially about the core. The outer coating is selected to provide thermally insulating properties and may have either an open or closed foamed or expanded cellular structure and a density of less than 0.75 grams/cm.sup.3, with the core comprising between about 5 to 80% of the granule by volume. The high density core is chosen from a material which absorbs, reflects and/or diffracts sound waves, such as metals as well as natural and synthetic solid compositions and compounds.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: June 29, 1999
    Inventor: Jozef Cipin
  • Patent number: 5904971
    Abstract: The improved creped non-laminar singular web structure comprising long fibers and short fibers demonstrated by high TWA and Z peeling. Creping causes a certain portion of long synthetic fibers and short fibers to substantially be oriented in a predetermined vertical or Z direction across the thickness of the web structure. In particular, when a stratified preparation containing wet stiff CTMP fibers is used, the vertically oriented CTMP fibers increase the total water absorption (TWA) of the web structure without collapsing. The high TWA print/double-creped paper products manufactured from the above web structure are suitable for heavy wipe and dry uses.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: May 18, 1999
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Ralph L. Anderson, Kenneth C. Larson
  • Patent number: 5897941
    Abstract: A film includes at least one layer comprising a blend of an ethylene polymer having a density of at least 0.925 grams per cubic centimeter, and an ethylene copolymer selected from the group consisting of ethylene/ester copolymer, and ethylene/alpha-olefin copolymer. The film is preferably substantially free from linear low density polyethylene. The film can be a monolayer or multilayer film, and can comprises a core layer comprising an ethylene polymer having a density of at least 0.925 grams per cubic centimeter; and one or more outer layers with the above described blend. At least one intermediate layer comprising an ethylene copolymer having a density of less than 0.925 grams per cubic centimeter can also be included. The film preferably has a thickness of less than 0.60 mils; a shrink force of less than 0.35 pounds in the longitudinal direction, and less than 0.
    Type: Grant
    Filed: April 12, 1996
    Date of Patent: April 27, 1999
    Assignee: Cryovac, Inc.
    Inventor: Gautam P. Shah
  • Patent number: 5891558
    Abstract: Single and double density biopolymer foams, composite biopolymer foams including both single and double density foams, and methods of preparing these foams and composite foams are described. Also described are biocompatible constructs which include single or double density biopolymer foams and extracellular matrix particulates and methods of preparing these constructs. The foams, composite foams, and biocompatible constructs of the invention can be used in tissue repair and reconstruction.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: April 6, 1999
    Assignee: Tissue Engineering, Inc.
    Inventors: Eugene Bell, Tracy M. Sioussat, Timothy W. Fofonoff
  • Patent number: 5885693
    Abstract: A three-dimensional shaped part comprises at least one first portion having an equal density throughout the volume thereof and comprising a plastic foam of a primary material having a cellular structure and plastic foam granules interconnected by the cellular structure of the plastic foam, and at least one second portion having an equal density throughout the volume thereof, the second portion being adjacent the first portion and comprising a plastic foam of a primary material having a cellular structure and elastically precompressed plastic foam granules interconnected by the cellular structure of the plastic foam. 70% to 90% of the volume of the shaped part is formed by the plastic foam granules, and the density of the second portion is greater than the density of the first portion.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: March 23, 1999
    Assignee: C.A. Greiner & Sohne Gesellschaft m.b.H.
    Inventors: Bernhard Eder, Franz Reitinger, Hans-Michael Sulzbach, Horst Klahre
  • Patent number: 5882776
    Abstract: The invention relates to foam structures with enhanced physical properties which can be used in the areas of packaging, athletics, water sports, and construction. In general, the structures are laminated polymer foams that include a core of a low density foam and one or more skins of relatively high density foam covering the core. The skins provide improved physical properties to the foam structures by improving the flexural strength, resistance to bending, and resulting damage from bending in the laminated foam structure while modestly increasing the weight of the laminated structure, for example. Uses of the foam structures include, but are not limited to, packaging materials, gym mats, body boards, or eaves fillers.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: March 16, 1999
    Assignee: Sentinel Products Corp.
    Inventors: John D. Bambara, Scott C. Smith, William B. Strzelewicz, Richard Bambara, Robert F. Hurley
  • Patent number: 5879780
    Abstract: The present invention presents an improved self-sustaining, lightweight honeycomb material made from non-elastomeric, imperforate, air permeable, nonwoven polypropylene or polypropylene/polyethylene blend. The thermoplastic honeycomb material of this invention exhibits anisotropic flexing characteristics providing conformability in three dimensions when flexed. In addition, the honeycomb has improved cushioning, resiliency, squeezability and shape recovery following crush, impact or squeezing. It is energy absorptive, thermally insulative, soft, breathable, compressible, shock absorbent and has low water absorbency making it compatible with moist environments, such as perspiration.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: March 9, 1999
    Assignee: Hexcel Corporation
    Inventors: James Lee Kindinger, Lori Ann Nusser
  • Patent number: 5879343
    Abstract: There is provided a surge material for personal care products which is a wettable web of fibers of 30 microns in diameter or less where the web has a permeability between about 250 and 1500 Darcys, a capillary tension between about 1.5 and 5 cm, and which maintains that permeability and capillary tension over the life of the web. Its preferred that the web have a density between about 0.02 g/cc to about 0.07 g/cc.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: March 9, 1999
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Richard Norris Dodge, II, Clifford Jackson Ellis, Connie Lynn Hetzler, Sylvia Bandy Little, Tamara Lee Mace, Lawrence Howell Sawyer, Hoa La Wilhelm
  • Patent number: 5874139
    Abstract: The subject invention generally provides a multilayer structure that includes a polymer mixture made from at least two polymer component materials. The invention particularly pertains to a multilayer structure containing an improved sealant layer and a polypropylene layer, wherein the sealant layer is made from a homogeneously branched ethylene polymer having particular molecular weight characteristics and a second ethylene polymer. The sealant layer has balanced properties such low heat seal and hot tack initiation temperature, a high hot tack strength and a broad hot tack seal window. The multilayer structure is particularly useful as a biaxially oriented polypropylene (BOPP) packaging film structure.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: February 23, 1999
    Assignee: The Dow Chemical Company
    Inventors: Luc Bosiers, Jacquelyn A. deGroot, Lawrence T. Kale, Pak-Wing S. Chum
  • Patent number: 5874373
    Abstract: An enhanced filtering media composite formed of a first electret media layer attached uniformly onto a second non-woven fibrous media layer by a special needling construction and procedure, so as to provide a needled media composite having increased mechanical strength and particle retention capacity. The first media electret layer is composed of about 50 wt. % mixture of polypropylene and modacrylic fibers, and the second media layer is composed of 80% 3 denier.times.3 inch polyester staple and 1.4 denier.times.1.5 inch polyester staple fibers, the fibers of one layer being selectively needled into the other layer using controlled needling density penetration, depth and repetitions to provide a composite having improved mechanical strength and filtration performance.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: February 23, 1999
    Assignee: American Felt & Filter Company
    Inventors: Scott H. Pryne, Ross D. West
  • Patent number: 5871849
    Abstract: A wood substitute turning blank and method of making the same is described. The turning blank includes a body having an outer shell of relatively low tensile strength material positioned about a rotational axis of the body. An inner core of relatively high tensile strength material is positioned along the rotational axis of the body. The high tensile strength of the inner core allows this turning blank to be turned at high speed on a lathe or the like. The high tensile strength of the core enhances the overall tensile strength of the finished product.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: February 16, 1999
    Inventor: Guy Joseph Lepine
  • Patent number: 5871644
    Abstract: The invention relates to a filter for brewed beverages, especially a coffee filter, and a process for producing such a filter, in which a fibrous material has pores with an average pore width (d) of at least about 0.1 mm measured at a fiber density of about 50% of the original fiber density of the material. The average pore width (d) is preferably in a range from 0.1 mm to 0.7 mm approximately and more preferably in a range from 0.1 mm to 0.4 mm approximately. The material is preferably paper. The pores are also preferably made by piercing with needles or by subjecting the fibrous material to water jets, providing an irregular pore edge.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: February 16, 1999
    Assignee: Melitta Haushaltsprodukte GmbH & Co. KG
    Inventors: Werner Simon, Lutz Wittenschlaeger, Fred Bergmann
  • Patent number: 5863639
    Abstract: This invention relates to improved sheet products and specifically to improved nonwoven sheet products made from highly oriented plexifilamentary film-fibril webs. The improved sheet products have high opacity and strength with a much wider range of porosity or Gurley Hill Porosity Values. In particular, sheet products made in accordance with the present invention have considerably higher Gurley Hill Porosity Values than similar weight sheet products subject to the same finishing treatments in accordance with prior known sheet materials. Similarly, sheet products made in accordance with the present invention can be made which have much lower Gurley Hill Porosity Values than prior sheet materials. The invention includes numerous methods and data characterizing the webs and sheets that form the improved sheet materials.
    Type: Grant
    Filed: July 23, 1996
    Date of Patent: January 26, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ralph A. Franke, Hyun S. Lim, Larry Ray Marshall, Michael P. Milone, R. Gail Raty, Akhileswar G. Vaidyanathan
  • Patent number: 5863642
    Abstract: A water resistant and vapour phase corrosion inhibitor composite material for wrapping around metallic items for protection and to reduce corrosion during storage and transportation. The composite material comprises a high strength, tear resistant, flexible scrim, a low density layer impregnated with a solid form vapour phase corrosion inhibitor, and a barrier layer to reduce the transmission of water, water vapour, oxygen and other environmental gases through the composite material. The barrier layer also reduces the atmospheric loss of gaseous vapour phase corrosion inhibitor from around the wrapped item. Each layer is formed from a polyolefin material to create a multi-layered polyolefin composite material that is easily recyclable.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: January 26, 1999
    Assignee: Fabrene, Inc.
    Inventors: Eric Henderson, Lorence J. Reed, Kevin D. Jagielski
  • Patent number: 5851632
    Abstract: A grip tape 11 for applying to a handle 94 generally comprises an elongate tape having a top portion 60 comprised of shock absorbing and compressible material, such as polyurethane, bonded to a shock absorbing bottom portion 90, such as of open-pored textile material, such as of felt. The top includes a central portion 62, a right densified portion 70 adjacent the right side 50 and a left densified portion 80 adjacent the left side 40. Preferably, the tops 75, 85 of densified portions 70, 80 are below the top 65 of the central portion 62 by at least 10% of the thickness of the tape. Preferably, bottom bevels 77, 87 underlie densified portions 70, 80. Tape 11 is spiral wrapped around handle 94 such that right side 50 overlies top 85 of left densified portion 80 of the previous turn, preferably such that top 75 of right densified portion 70 is disposed below top 65 of central portion 62 of the succeeding wrap.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: December 22, 1998
    Inventors: Sam Hsin-Shun Chen, C. F. Chang
  • Patent number: 5845929
    Abstract: A covering device for air-bag-collision-safety systems, including a cap formed of a frame and a cover. The cover is provided with predetermined tear lines forming cover sections, whereby the cover sections are connected in a hinge manner with the frame. The covering device is injection molded of a foamed thermoplastic material, especially an elastomer. Areas of various layer thicknesses lying in the gripping area of the user, such that the surface layers lying in the gripping area of the user, as well as the areas of the covering device used for attachment have a lower pore volume and correspondingly a higher density and hardness between 50 Shore A and 75 Shore D. A layer having a characteristic foamed structure is formed under the surface layers lying in the gripping area of the user, whereby the thickness ratio between the thicker surface layer and the foamed structure is 1 at the most.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: December 8, 1998
    Assignee: Petri AG
    Inventors: Egon Schlett, Rudolf Helfrich, Norbert Vath
  • Patent number: 5846662
    Abstract: A mold release liner for a heated pressure mold for making products such as printed circuit boards is made utilizing two or more wet-laid fiber layers of cellulose or cellulose derivative fibers (such as wood, cotton, cellulose acetate, or rayon fibers, or mixtures of these). The first layer has a sufficiently low density so that it acts as a cushion and absorbs deformation when used as a release liner in the mold (typically it has a thickness of between 8-250 mils, most desirably 40-90 mils, and a basis weight of about 25-350 pounds per ream, most desirably 130-160 pounds per ream). A second layer is of much higher density than the first layer and readily releases from the molds, for example comprising condenser tissue or a similar product, having a thickness of between 0.5-10 mils and a basis weight of 4-50 pounds per ream of 500 sheets. The first and second layers are in face-to-face engagement with each other, and may be adhesively laminated together with sheet, spray, liquid, or powder adhesive.
    Type: Grant
    Filed: May 15, 1997
    Date of Patent: December 8, 1998
    Assignee: Ahlstrom Filtration, Inc.
    Inventors: John S. Baumgardner, deceased, Merle W. Barclay
  • Patent number: 5843559
    Abstract: An insulating fiber mat is comprised of a plurality of fibers bound together by a binder means and distributed throughout the mat. At least some of the fibers throughout the mat are inclined. The inclined fibers on opposed sides of a central horizontal plane of the mat have opposed angles of inclination. This permits the fiber mat to be easily separated substantially along the central horizontal plane by applying a pulling force on one side of the mat in the direction of the inclined fibers.
    Type: Grant
    Filed: November 25, 1997
    Date of Patent: December 1, 1998
    Assignees: Group Laperrier et Verreault, Inc., Cascades Inc.
    Inventors: Serge Cadieux, Yvon L'Heureux, Stephane St-Cyr, Marcel Dube, Daniel Frenette, Berthier Roy
  • Patent number: 5843279
    Abstract: Disclosed is a cellulosic fibrous structure, such as paper. The fibrous structure has at least three intensively distinct regions. The regions are distinguished from one another by intensive properties such as basis weight, density and projected average pore size, or thickness. In one embodiment, the fibrous structure has regions of two basis weights, a high basis weight region and a low basis weight region. The high basis weight region is further subdivided into low and high density regions so that a fibrous structure having three regions is produced. A second embodiment is a four region fibrous structure. Two of the regions have generally equivalent relatively high basis weights and two of the regions having generally equivalent relatively low basis weights.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: December 1, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Dean Van Phan, Paul Dennis Trokhan
  • Patent number: 5843549
    Abstract: The release liner of a paper label laminate is made with a porous, inexpensive, low weight paper substrate. The paper substrate is selected to substantially match the label facestock in terms of hysterisis curves. In addition, chemical techniques rather than supercalendering or heavy clay coating are relied on for achieving the desired silicone holdout and silicone cure properties of the paper substrate.
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: December 1, 1998
    Assignee: Avery Dennison Corporation
    Inventor: Scott Mingus
  • Patent number: 5843063
    Abstract: A multifunctional material is provided for use in personal care products. The multifunctional material has a permeability between 100 and 10000 Darcys and a capillary tension between about 2 and 15 cm. Structures containing this multifunctional material can have a runoff rate of less than 25 ml per 100 ml insult, over its life. The multifunctional material should have between about 30 and 75 weight percent of a slow rate superabsorbent, between 25 and 70 weight percent of pulp and from a positive amount up to about 10 percent of a binder component. The material preferably has a density between about 0.05 and 0.5 g/cc. The material has a liquid pass through function which desorbs a surge material across time frames consistent with user conditions and releases the liquid for distribution to remote storage locations. The material, when combined with the intake and distribution materials, defines a composite structure for use in personal care products.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: December 1, 1998
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Richard Allen Anderson, Andrew Scott Burnes, Kuo-Shu Edward Chang, Stanley Michael Gryskiewicz, Connie Lynn Hetzler, Margaret Gwyn Latimer, Yong Li, Sylvia Bandy Little, Tamara Lee Mace, Billie Jean Matthews, James Brian Riddle, Lawrence Howell Sawyer, Hoa La Wilhelm
  • Patent number: 5837363
    Abstract: A roofing product is described which includes a substantially rigid foam core backed with a moisture resistant coating, a mineral aggregate layer overlying said foam core, a membrane layer thereon, a plurality of glass fibers embedded within said membrane layer or present as a separate layer between said aggregate and membrane layers, and a topcoat polymer shell on said membrane layer and overlying the edges of the product.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: November 17, 1998
    Assignee: Building Materials Corporation of America
    Inventor: Ralph Colafati
  • Patent number: 5837351
    Abstract: A multi-purpose imageable sheet is provided that is useful for multiple applications including manual drafting, ink jet recording and electrophotographic printing and copying. The sheet comprises a base support and a surface coating on at least one side thereof, with the surface coating being formed from an aqueous-based coating formulation that comprises an aqueous dispersion of (i) a crosslinkable polymer and a crosslinking agent therefor, and (ii) a pigment. The surface coating is a pencil, ink and toner receptive crosslinked surface layer that embodies properties that make its surface suitable as a receptor for a variety of imaging means.
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: November 17, 1998
    Assignee: OCE USA, Inc.
    Inventors: John J. Chernovitz, David Habib
  • Patent number: 5834104
    Abstract: The present invention is an inexpensive and disposable mat constructed from non-flammable material for placement beneath fluid leaking machinery. The mat is manufactured from at least one layer of non-woven fluid absorbing polypropylene that is bonded to at least one fluid impervious backing sheet such a polyester or polyethylene by use of heat sensitive adhesive. The assembled mat forms a high strength bonded mat that resists tearing and will retain fluids. The backing sheet prevents fluids from penetrating so as to confine all fluids to the non-woven portion of the mat where they disperse and, depending on the type of fluid absorbed, may evaporate.
    Type: Grant
    Filed: April 8, 1996
    Date of Patent: November 10, 1998
    Inventor: Peter J. Cordani
  • Patent number: 5824400
    Abstract: The present invention relates to a plastic article formed from several foamed thermoplastic elastomers, such as a thermoplastic polyolefin elastomer based on polypropylene and a vulcanized elastomer at least one of an elastomeric styrene/ethylene/butylene/styrene block copolymer, an elastomeric styrene/butadiene/styrene block copolymer, a thermoplastic elastomer based on polypropylene and an elastomeric styrene/ethylene/butylene/styrene block copolymer and a thermoplastic elastomer based on polypropylene and an elastomeric styrene/butadiene/styrene block copolymer. The present invention further provides plastic articles based on a blend of thermoplastic elastomers and thermoplastic elastomer olefins. The invention further provides a process for making these articles.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: October 20, 1998
    Assignee: DSM N.V.
    Inventors: Jordanis Petrakis, Wolfgang Hoge, Torsten Leenaerts, Marinus Alfenaar, Johannes G. M. Nieuwkamp
  • Patent number: 5824462
    Abstract: Disclosed are resin-coated paper having on one side of its base paper a first resin layer made of a resin composition obtained by melt-blending 90 to 65 parts by weight of a high-density polyethylene resin having a melt flow rate of 10.0 g/10 min to 40.0 g/10 min and a density of 0.960 g/cm.sup.3 or more and 10 to 35 parts by weight of a low-density polyethylene resin or a medium-density polyethylene resin, which has a melt flow rate of 0.2 g/10 min to 2 g/10 min, a density of 0.935 g/cm.sup.3 or less, a percentage of molecules with a molecular weight of 500,000 or more of 10% by weight or more and a critical shear rate of 0.5 (l/sec) or less, said resin composition obtained by the melt-blending having a critical shear rate of 10 (l/sec) or less; and a process for producing the resin-coated paper. The resin-coated paper is good in the molding processability of the resin layer, is excellent in the adhesion between the resin layer and the base paper, and contains only a small amount of a gel formed.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: October 20, 1998
    Assignees: Mitsubishi Paper Mills Limited, Mitsubishi Chemical Corporation
    Inventors: Tetsuya Ashida, Touru Noda, Osamu Kojima, Tomoichi Morita, Nobushige Ikeya, Takuya Seri, Kohhei Nitta
  • Patent number: 5817408
    Abstract: The invention relates to a sound insulating structure including low-density and high-density layers. The low-density layer has first and second fibrous layers and ranges from 0.5 to 1.5 kg/m.sup.2 in surface density. The first and second fibrous layers are respectively made of first and second thermoplastic synthetic fibers. The first and second fibers respectively have first and second single fiber diameters, each of which diameters is in a range of from 3 to 40 .mu.m, and first and second fiber lengths, each of which lengths is in a range of from 10 to 100 mm. The high-density layer is formed on the low-density layer and is made of an air-impermeable polymer material and has a surface density that is higher than that of the low-density layer and ranges from 1 to 10 kg/m.sup.2. The low-density layer is high in sound-absorption coefficient and at the same time low in spring constant. Therefore, the sound insulating structure becomes substantially improved in sound insulating capability.
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: October 6, 1998
    Assignees: Nissan Motor Co., Ltd., Kasai Kogyo Co., Ltd.
    Inventors: Motohiro Orimo, Kyoichi Watanabe, Kouichi Nemoto, Hiroshi Sugawara, Shousuke Oku
  • Patent number: 5817409
    Abstract: Woven or non-woven fabric, in particular for the manufacture of prepregs especially for the manufacture of structural components in the aviation industry, manufactured of fibers, preferably carbon fibers having an elasticity modulus in excess of 80 000 N/mm.sup.2, preferably of 200 000 N/mm.sup.2 and a specific gravity of preferably 1,5 g/cm.sup.3, and not more than 2,1 g/cm.sup.3, wherein the fibers are composed of mono-filaments, and the fibers and therefore also the fabrics have been pressed flat, preferably calendered. In order to produce a woven or non-woven fabric which is mechanically particularly strong and yet can be manufactured economically, each fiber is composed of at least 2000, preferably 3000 individual mono-filaments (3K=200 tex=200 g/1000 m). The woven or non-woven fabric is preferably used for the manufacture of prepregs and henceforth for lightweight structural components especially for the aviation industry and in particular for overhead luggage compartments.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: October 6, 1998
    Assignee: Fischer Advanced Composite Components Gesellschaft m.b.H.
    Inventors: Walter Anton Stephan, Richard Reinhold Lechner
  • Patent number: 5814399
    Abstract: The present invention provides for improved thermoplastic stretch wrap films having superior cling force, load retention, elongation, tear resistance and puncture resistance properties and for the methods of using those stretch wrap films. The stretch wrap films generally have a thickness of from about 0.4 to about 3 mils. The stretch wrap films are preferably constructed in a multilayer fashion having outside cling layers, and at least one inside puncture resistant layer comprising a metallocene-catalyzed polyethylene resin and at least one inside transverse direction tear resistant layer comprising a polyethylene copolymer.
    Type: Grant
    Filed: March 12, 1996
    Date of Patent: September 29, 1998
    Assignee: Tenneco Packaging
    Inventor: George Eichbauer
  • Patent number: 5814409
    Abstract: The present invention relates to an expanded product comprising a thermoplastic fluroine type resin which does not have a cross-linking structure and has an expansion ratio of between 4-fold and 30-fold and a closed cell percentage of 40% or more. The expanded product contains at least one interface comprising layers having different cell densities and has a distribution index (Sc) and a coefficient of variation (Cv) of the maximum diameter of an open cell present at an optional cross section of each layer of 0<Sc.ltoreq.6 and 0<Cv.ltoreq.1, respectively, which are represented by the following equations:Sc=(L.sub.Max. -L.sub.Min.)/Lav. (1)Cv=SD/L.sub.av. (2)wherein L.sub.Max., L.sub.Min. and L.sub.av. represent maximum, minimum and average values of maximum diameters of open cells, respectively; and SD represents a standard deviation.
    Type: Grant
    Filed: September 2, 1997
    Date of Patent: September 29, 1998
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Toshioki Hane, Hisao Koike
  • Patent number: 5811178
    Abstract: Disclosed is an improved high sorbency nonwoven fabric and its use particularly as an oilsorb material. The high sorbency nonwoven is preferably made by multi-bank meltblowing and different perturbing thermoplastic fibers of, for example, propylene polymers in separate banks to provide a fiber density gradient through the thickness of the fabric. The sorbent nonwovens have high bulk and strength, oil capacity and oil absorption rates making them particularly suited to such applications. Treatments and additives for such materials are also disclosed.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: September 22, 1998
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Gabriel Haman Adam, Bryan David Haynes, Jark Chong Lau, Jeffrey Lawrence McManus
  • Patent number: 5800909
    Abstract: A sheet for an illuminated signboard is described which has as a base a composite sheet which is a plain weave fabric (I) having laminated on one or both sides thereof a microporous film (II) which is a stretched thermoplastic resin film containing fine white inorganic particles, where the sheet for an illuminated signboard satisfies the following requirements (1) to (4):(1) it has an opacity of from 80 to 100%;(2) it has a whiteness of from 85 to 100%;(3) it has a total light beam average reflectance of from 12 to 40%; and(4) it has a total light beam average transmittance of from 70 to 95%.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: September 1, 1998
    Assignee: Oji-Yuka Synthetic Paper Co., Ltd.
    Inventors: Katsukuni Nitta, Kazuyo Senga
  • Patent number: 5792526
    Abstract: A multilayer film of the invention is a five-layer resin film comprising one or more ethylene-.alpha.-olefin copolymers in each resin layer, wherein the density of the resin comprising each layer is as follows, in order from the outer layer:First layer: 0.935 to 0.950 g/cm.sup.3Second layer: 0.920 g/cm.sup.3 or lessThird layer: 0.925 to 0.950 g/Cm.sup.3Fourth layer: 0.920 g/cm.sup.3 or lessFifth layer: 0.925 to 0.940 g/cm.sup.3The container of the invention is formed by using this multilayer film, and is excellent in heat resistance, blocking resistance, tensile strength, flexibility, and transparency. The multilayer film and container of the invention are suited for medical applications, and others.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: August 11, 1998
    Assignee: Otsuka Pharmaceutical Factory, Inc.
    Inventors: Katsushi Watanabe, Hideshi Okamoto, Hirohisa Taniguchi
  • Patent number: 5773124
    Abstract: This invention relates to the magnetic recording medium, its manufacturing method and the magnetic disk apparatus, in which the ferromagnetic thin film is formed on the substrate board, and the protective layer is provided on that. A Magnetic recording medium of the has at least one layer of the protective layer on the magnetic surface, which is characterized in that the surface of the protective layer is provided with the high noncontinuous large resistance layer, and the density of the surface of the protective layer is higher than other regions other than the said surface.The magnetic recording medium has the surface of the protective layer which contains at least one kind or more of the element of the inert gas element, the halogen element and hydrogen.Therefore, when making a lower flying height of the magnetic head is achieved, the slide durability over the long term is improved, particularly, the slide durability of the magnetic disk apparatus using the MR head can be improved.
    Type: Grant
    Filed: February 18, 1994
    Date of Patent: June 30, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Fuminori Ishikawa, Hideaki Tanaka, Toshinori Hirano, Hiroko Saito, Kenichi Gomi, Hiroshi Yashiki, Youichi Inomata, Yoshihiro Moriguchi
  • Patent number: 5766745
    Abstract: The present invention teaches a textile structure and method of making thereof which is useful for fire blocking a structure and insulating it from sound and heat. The textile structure includes at least one composite having three layers which are placed upon one another to form top, middle and bottom layers. The middle layer is a densified matt or batting having at least 10% by weight of carbonaceous fibers. The top and bottom layers are less densified matts or battings which have at least 10% by weight of carbonaceous fibers. Multiple composites may be secured together for increased protection against fire, sound and heat.
    Type: Grant
    Filed: February 9, 1996
    Date of Patent: June 16, 1998
    Inventors: W. Novis Smith, Toby Burnham
  • Patent number: 5759672
    Abstract: A transfer sheet for electrophotography is disclosed. The transfer sheet comprises a sheet substrate and a porous resin-containing coated layer formed on at least one surface of the substrate. The coated layer has a surface average pore diameter of 0.5 to 50 .mu.m, having a surface pore opening area ratio of at 10 to 70%, and having a density of 0.1 to 0.8 g/cm.sup.3. The transfer sheet eliminates disturbance of mottles and dots in the image portion and provides a high quality picture image small in gloss contrast between the blank portion and the image portion.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: June 2, 1998
    Assignee: Oji Paper Co., Ltd.
    Inventors: Hiroyuki Fujii, Akira Nakamura
  • Patent number: 5759660
    Abstract: A plastic covered article for a railing which includes an elongate core encased in a seamless, plastic casing. The casing is heat shrunk to conform with the exterior surface of the core. The core is thereby covered along its length with a weather-resistant casing which requires no periodic field maintenance.The railing articles of the present invention are fabricated by heating a tube of plastic material and causing the tube to expand. The elongate core is inserted into the expanded tube to encapsulate the core. The tube encapsulating the core is again heated to shrink the tube tightly against the core such that the tube conforms to the exterior surface of the core.
    Type: Grant
    Filed: October 11, 1995
    Date of Patent: June 2, 1998
    Assignee: Associated Materials, Inc.
    Inventor: Mark L. Coulis