Olefin Polymer Or Copolymer Sheet Or Film (e.g., Polypropylene, Polyethylene, Ethylene-butylene Copolymer, Etc.) Patents (Class 442/398)
  • Patent number: 5756406
    Abstract: A method for making a soft trim composite, and a resulting improved soft trim composite, used for example as a motor vehicle interior trim component or a seat covering component, comprises laminating a surface covering onto an expanded cellular layer, where a cellular layer is provided, to form a bilaminate, and placing a heat barrier insert, comprising nonwoven fibers coated on one side with thermoplastic resin in a mold between the bilaminate and a substrate created in a molding step. The heat barrier insert dissipates heat from substrate molding, permitting a substantially uniform and complete bonded relation to be achieved between substrate and insert, as well as between insert and bilaminate, virtually simultaneously with creation of the substrate, and without causing substantial damage to the bilaminate. An improved soft trim composite made by the method described, is also provided.
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: May 26, 1998
    Assignee: Blue Water Plastics, Inc.
    Inventors: Jay Rittman, Michael W. Pedrotti
  • Patent number: 5733629
    Abstract: A sorbent article comprises a sorbent layer having first and second major surfaces and a texturized polymeric skin layer secured to the first major surface of the sorbent layer. The article has a stiffness of about 200 N/g.cm.sup.-2 or less. An article of this construction has excellent sorptive and non-slip properties, making it well suited for use on floors and other work surfaces. Wet kinetic coefficients of friction of 0.4 and greater can be demonstrated by the inventive articles. The article improves the safety of persons who need to stand, walk, or otherwise safely function on floors or other surfaces that are susceptible to wet conditions.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: March 31, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Thomas I. Insley
  • Patent number: 5733624
    Abstract: A mineral fiber (e.g. fiberglass) thermal insulation batt is disclosed wherein a base mineral fiber layer is impregnated with a two-layer layering system so as to produce a batt which is substantially vapor impermeable with a perm vapor rating less than about one. The first layer of the layering system is of a low melt material while the second layer is of a high melt material, the first layer being sandwiched between the base insulating layer and the second layer, and functioning to bond the layering system to the base. In certain embodiments, the first layer includes quick blooming ethyl vinyl acetate (e.g. from about 10-25%) and a low density (e.g. 22-26 lbs. per cubic foot) polyethylene, and the second layer includes high density (e.g. 28-38 lbs. per cubic foot) polyethylene. The resulting insulation batt is vapor impermeable, less susceptible to cold-crack, easier to manufacture, a better fire retardant, more durable, and easier to handle.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: March 31, 1998
    Assignee: Guardian Fiberglass, Inc.
    Inventors: Robert W. Syme, Gary E. Romes, Joseph T. Church, Steven Sanford
  • Patent number: 5733825
    Abstract: Undrawn, tough, durably melt-bondable, macrodenier, thermoplastic, multicomponent filaments, such as sheath-core and side-by-side filaments, comprising a first plastic component and a second lower-melting component defining all or at least part of the material-air boundary of the filaments. The filaments can be made by melt-extruding thermoplastics to form hot filaments, cooling and solidifying the hot filaments, and recovering the solidified filaments without any substantial tension being placed thereon. Aggregations of the filaments can be made in the form of floor matting and abrasive articles.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: March 31, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Philip G. Martin, Gary L. Olson, Dennis G. Welygan
  • Patent number: 5733822
    Abstract: The present invention provides composite nonwoven fabric laminates and processes for producing such. The fabric is comprised of a web of thermoplastic filaments laminated to at least one other web. Preferably, the filaments are spunbonded continuous polyolefin filaments which have an oxidatively degraded outer sheath portion to promote better interfilamentary bonding and improved fabric laminate strength. In a preferred embodiment, two outer nonwoven webs comprise oxidatively degraded spunbonded filaments and are positioned around and laminated to a web of meltblown microfibers thus forming an spunbond/meltblown/spunbond fabric. Additionally, a stretch compatible fabric may be formed in which a web of oxidatively degraded filaments is laminated to an elastic web. The fabrics of the invention may be advantageously used in numerous applications such as medical garments and disposable adsorbent products.
    Type: Grant
    Filed: August 11, 1995
    Date of Patent: March 31, 1998
    Assignee: Fiberweb North America, Inc.
    Inventors: Scott L. Gessner, Lloyd E. Trimble
  • Patent number: 5731061
    Abstract: The perforated sheet, in particular for sanitary articles, and made of a substance that is impervious to liquid, includes a multiplicity of craters each having a base in the plane of the outside face, an apex, and a sidewall that slopes between the base and the apex. The peripheral shape of the base includes at least one zone of discontinuity such that on going round the periphery of each crater, its sidewall presents non-uniform inclination with angles of inclination relative to the perpendicular to the plane of the outside face of the sheet that vary between positive values and negative values, said angle being negative at least in the zone of discontinuity. The peripheral shape of the base is preferably the result of partially overlapping a plurality of curved geometrical shapes, in particular circles and ellipses, and the zone of discontinuity corresponds to the junction between superposed shapes.
    Type: Grant
    Filed: March 14, 1996
    Date of Patent: March 24, 1998
    Assignee: Guial S.A.
    Inventor: Bernard Bezier
  • Patent number: 5723222
    Abstract: In a hot melt adhesive comprising a thermoplastic block copolymer containing a block copolymer represented by formula (1) shown below (component A), tackifier (component B), diluent (component C) and stabilizer (component D), the content of component (A) is 10 to 40% by weight, the content of component (B) is 30 to 70% by weight, the content of component (C) is 30% by weight or less, and the content of component (D) is 0.1 to 4% by weight, all based on the total amount of said hot melt adhesive.A.sub.1 -B-A.sub.2 (1)wherein A.sub.1 and A.sub.2 are aromatic vinyl copolymer blocks having different molecular weights, and B is a conjugated diene polymer or hydrogenated derivative thereof;Accordingly, the hot melt adhesive described above not only fulfills the basic requirements such as adhesiveness to a polyolefin film, stability, holding ability and low cost, but also exhibits an excellent low temperature adhesiveness and satisfactory handling during spray coating process.
    Type: Grant
    Filed: April 9, 1996
    Date of Patent: March 3, 1998
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Atsunori Sato, Naohiro Maeda
  • Patent number: 5700531
    Abstract: A pull-activated container adapted to hold a fluid, volatile solid, or absorbent for a fluid wherein at least a portion of the container includes a laminate which, in turn, includes a first layer, a second layer, a third layer, and a grasping means. The first layer is a fibrous sheet, the second layer is a film having a first side and a second side, and the third layer is a porous fibrous sheet. The third layer is inside the container. The first layer is bonded to the first side of the second layer and has a first bonding strength and the third layer is bonded to the second side of the second layer and has a second bonding strength. For example, the first bonding strength may be greater than the second bonding strength to an extent sufficient to permit selectively removing the first and second layers from the third layer without tearing the third layer. The grasping means is affixed to the first layer and has a third bonding strength which is greater than the second bonding strength.
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: December 23, 1997
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Gunilla Elsa Gillberg-LaForce, Kevin George Hetzler, Rob Lee Jacobs
  • Patent number: 5698290
    Abstract: A paper for packaging food is disclosed which prevents vapor generated from the food from condensing on the packaging paper or on the inner wall of a container and prevents condensed water from again adhering to the food and deteriorating the taste and flavor of the food when the food is packaged, transported or preserved. This packaging paper is produced by bonding paper having water absorptivity and a gas-permeable nonwoven fabric made of a synthetic resin by a thermoplastic synthetic resin film having through-holes formed throughout the entire surface thereof. To produce this packaging paper, paper having a plurality of protrusions-recesses on the surface thereof and a nonwoven fabric are bonded by causing a molten thermoplastic synthetic resin to flow between the paper and the nonwoven fabric from a T-die by using an extrusion laminator.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: December 16, 1997
    Assignee: Eiwa Kagaku Kogyo Kabushiki Kaisha
    Inventors: Takashi Fukushima, Mikio Tadokoro
  • Patent number: 5698481
    Abstract: A polyolefin film for use as a sterilization wrap material which includes a film with a thickness of from about 0.005 mm to about 0.2 mm and having a plurality of discontinuous thinned regions. The thinned regions constitute at least about 25 percent of the surface area of the film. The thickness and area of the thinned regions are adapted to permit the passage of steam and water vapor through the film during steam sterilization. The film is made by a method which involves extruding a molten polyolefin film at a first temperature and passing the molten film through a nip. The nip includes an anvil roll and a pattern roll. The anvil roll has a smooth surface and the surface of the pattern roll is maintained at a temperature which is at least about 150.degree. C. lower than the first temperature and is selected to prevent sticking of the film to either roll.
    Type: Grant
    Filed: October 24, 1996
    Date of Patent: December 16, 1997
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Leslie Hope Van Hout, Bernard Cohen, Lee Kirby Jameson
  • Patent number: 5695376
    Abstract: The present invention provides a barrier laminate having a barrier layer and a lofty crimped-fiber nonwoven web layer, which laminate provides a foam-like resiliency, cloth-like texture and liquid barrier property. The barrier layer of the laminate is selected from films, microfiber nonwoven webs and laminates thereof, and the crimped-fiber web layer, which contains a structural fiber component and an heat-activatable adhesive component, has substantially uniformly distributed interfiber bonds. Additionally provided are thermoformed articles from the laminate and a thermoforming process for producing the articles.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: December 9, 1997
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Paul Joseph Datta, Stanley Michael Gryskiewicz, Richard Daniel Pike
  • Patent number: 5692935
    Abstract: A heat sealable, adhesive-free material for plastic fabrics and clothing comprising the combination of a fabric scrim and a heat sealable coextruded film lamination which provides a barrier against solids, liquid and gases. The coextruded lamination comprises a film composition with an outer and inner layer of linear low density polyethylene and an intermediate layer of a polyamide polymer.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: December 2, 1997
    Assignee: Lakeland Industries, Inc.
    Inventor: W. Novis Smith
  • Patent number: 5667864
    Abstract: Absorbent laminates include an oriented, fluid-pervious plastic substrate bonded to a nonwoven absorbent member. The nonwoven absorbent member includes bi-component fibers having a heat-softenable outer skin, said heat-softenable outer skin being heat-softenable at a temperature lower than the melting point and shrinking point of the oriented plastic substrate to provide a binder component for the laminate. A fluid-pervious plastic substrate can be adhered to one or both surfaces of the nonwoven absorbent member through bi-component fibers of the nonwoven absorbent member. In absorbent laminates including opposed fluid-pervious outer plastic substrates marginal edges of the laminate can be compression sealed through the bi-component fibers in the intermediate nonwoven absorbent member to seal the edges against the escape of fibers from the laminate. Methods of forming absorbent laminates of this invention also form a part of the present invention.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 16, 1997
    Inventor: Leo M. Landoll
  • Patent number: 5665452
    Abstract: The present invention provides a three-dimensional, macroscopically expanded, apertured, laminate web suitable for use as a topsheet on an absorbent article and a method for making the same. The web includes a first layer of substantially transparent, polymeric material having an inner surface and an outer surface. A nonwoven web is secured to the inner surface of the substantially transparent polymeric material and is visible through the substantially transparent polymeric material. The presence of the nonwoven web creates the appearance of a fibrous web which is perceived as soft and skin friendly while still maintaining the fluid transport benefits of prior art plastic webs.
    Type: Grant
    Filed: March 3, 1994
    Date of Patent: September 9, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Fred M. Langdon, G. Chris Dobrin
  • Patent number: 5662978
    Abstract: There is provided herein a protective cover made from conjugate fiber nonwoven fabric having a basis weight between about 1 and 8 osy laminated with a film. The conjugate fibers may be in a configuration such as sheath/core, side-by-side and islands in the sea and may be formed from polyolefins and polyamides. The preferred fiber embodiments are a side-by-side polypropylene-polyethylene fiber and a sheath/core polyethylene/nylon 6 fiber. The fabric is preferably extrusion coated with a polyethylene film to form the protective cover. The cover is light weight, waterproof and provides sufficient burst and tensile strength so that the cover may be used during transportation of, for example, a boat.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: September 2, 1997
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: J. Page Brown, Ty J. Stokes
  • Patent number: 5652051
    Abstract: There is disclosed fibers and fabrics formed from a polymer which is a "hand enhancing" polymer. The "hand enhancing" polymer is a copolymer of polypropylene which contains ethylene, 1-butene, or 1-hexene or a terpolymer of propylene, ethylene and butene. If the polymer is an ethylene copolymer, the copolymer may be random or random and block and the ethylene must be present in an amount between greater than 5 and 7.5 weight percent of the copolymer. If the copolymer contains 1-butene, it must be present in an amount between 1 and 15.4 weight percent of the copolymer. If the copolymer contains 1-hexene, it must be present in an amount between 2 and 5 weight percent of the copolymer. If the polymer is a terpolymer of propylene, ethylene and butylene, the polypropylene is present in an amount between 90 and 98 weight percent, the ethylene is present in an amount between 1 and 6 weight percent and the butylene is present in an amount between 1 and 6 weight percent.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: July 29, 1997
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Susan Elaine Shawver, Paul Windsor Estey, Linda Ann Connor
  • Patent number: 5650223
    Abstract: The present invention relates to absorbent articles such as sanitary napkins, panty liners, and incontinence pads. More particularly, the present invention relates to absorbent articles, such as sanitary napkins, that have undergarment covering components (or "side wrapping elements") that automatically wrap the sides of a wearer's panties and provide an alternative to conventional side flaps. The side wrapping elements have at least one zone of extensibility and at a region therein that is stiffer than the zone of extensibility.
    Type: Grant
    Filed: June 11, 1996
    Date of Patent: July 22, 1997
    Inventors: Eric Patton Weinberger, Bruce William Lavash, Robb Eric Olsen, James William Cree
  • Patent number: 5645933
    Abstract: A monoaxially oriented material of a longitudinally monoaxially oriented reticular web (a), a transversely monoaxially oriented reticular web (b) or a monoaxially oriented multi-layer tape (c) which comprises a polypropylene resin layer and an adhesive layer comprising a mixture of polypropylene resin and polyethylene resin and laminated on one surface or both surfaces of the polypropylene resin layer, and a polypropylene woven or non-woven fabric prepared by laminating crosswise or weaving the monoaxially oriented materials with interposing the adhesive layer so that the orientation axes of the materials may intersect; and a method for preparing the polypropylene woven or non-woven fabric and a heat-resistant reinforced laminate material.
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: July 8, 1997
    Assignee: Nippon Petrochemicals Company, Limited
    Inventors: Suehiro Sakazume, Tsutomu Miyamoto, Hiroshi Shimizu
  • Patent number: 5643989
    Abstract: A composite material consisting of continuous random glass mats with a new non-peroxide sizing chemistry, polypropylene and a functionalized polypropylene. This composite gives unexpectedly higher performance in bumper beam applications. The functionalized polypropylene contains anhydride functionalities, which are preferably maleic anhydride.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: July 1, 1997
    Assignee: Azdel, Inc.
    Inventors: Hendrik T. Van De Grampel, Yongsheng Hou, Dennis O. Spencer, Robert G. Swisher, Thomas V. Thimons
  • Patent number: 5633070
    Abstract: An adhesive film for adhesive bandage in which an adhesive is coated on one surface of a nonwoven fabric, characterized in that a film having water vapor permeability and water proofing property is laminated on the opposite surface of the nonwoven fabric. A backing sheet is formed in such a structure that an elastic nonwoven fabric is laminated with a film having water vapor permeability and water proofing property, whereby sufficient flexibility and excellent water vapor permeability are provided and help to keep skin respiration and not only to prevent skin irritation caused by stickiness with perspiration or the like but also to completely prevent permeation of water, a detergent aqueous solution or the like into a pad portion or an affected part and further to prevent infection of a wound with bacteria. The preventions can be more completed by sealing the edge portion of the adhesive bandage via heat-sealing or the like.
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: May 27, 1997
    Assignee: Johnson & Johnson Consumer Products, Inc.
    Inventors: Etsuo Murayama, Toshikazu Saito
  • Patent number: 5609940
    Abstract: The present invention relates to a polymer panel with a sealing membrane for making electrical and mechanical connections through the panel. The invention further relates to a method of processing such panel.
    Type: Grant
    Filed: June 28, 1993
    Date of Patent: March 11, 1997
    Assignee: General Electric Company
    Inventors: Koichi Inaba, Kensuke Uchida, Raymond F. Kolberg
  • Patent number: 5607760
    Abstract: A diaper containing a liquid pervious topsheet coated with a lotion composition is disclosed. The lotion composition reduces the adherence of BM to the skin of the wearer, thereby improving the ease of BM clean up, and improves skin softness. The lotion composition comprises a solid polyol polyester and an emollient to improve the lubricity of the solid polyol polyester. The polyol polyester(s) and emollient remains at or near the skin surface, providing the desired BM cleaning or therapeutic benefits.
    Type: Grant
    Filed: August 3, 1995
    Date of Patent: March 4, 1997
    Assignee: The Procter & Gamble Company
    Inventor: Donald C. Roe
  • Patent number: 5605739
    Abstract: Laminates with improved peel strength are obtained by point bonding thermoplastic layers wherein one of the layers comprises sheath/core bicomponent fibers or filaments wherein the density of the core component exceeds the density of the sheath component and both layers contain compatible components. Peel strengths of at least about 125% of those obtained without such bicomponent fibers or filaments are obtained. Laminates with films and other nonwovens also have a broad bonding window. They are useful for many nonwoven applications including barrier applications such as health care including surgical gowns and drapes, institutional garments, agricultural fabrics, recreational fabrics, and personal care product components.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: February 25, 1997
    Assignee: Kimberly-Clark Corporation
    Inventors: Ty J. Stokes, Karen L. English