Regenerated Or Modified Patents (Class 428/536)
  • Patent number: 6638612
    Abstract: A composite material comprises a first wood component of substantially axially aligned wood chips having a first size range and being distributed throughout the composite material in a first discontinuous phase, a second wood component of wood particles having a second size range and being distributed between the wood chips in a second discontinuous phase, the second size range being distinct from the first size range and having substantially smaller values than the first size range, and a thermoplastic polymer component encapsulating the wood chips and the wood particles and forming a continuous phase extending throughout the composite material. The wood chips constitute from about 100 to about 0 weight percent of a total weight of the first and second wood components and the wood particles constitute from about 0 to about 100 weight percent of the total weight of the first and second wood components.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: October 28, 2003
    Inventor: James D. Jones
  • Patent number: 6605367
    Abstract: Improved compositions for coating paper stock, methods of forming such compositions, and methods of coating paper stock with those compositions are provided. The compositions comprise an aqueous dispersion including therein from about 20-45% by weight filler (e.g., a starch such as wheat starch) and from about 6-18% by weight wheat gluten. Preferably, the gluten is initially modified with a reducing agent so that the average molecular weight of the gluten is less than about 1,000 kDa. The compositions have a viscosity of up to about 2000 cP and a solids content of from about 25-57% by weight, thus making them suitable for high speed coating of paper stock. The finished, coated stock may be conventionally printed to achieve high gloss end products. The compositions are preferably water soluble, thereby greatly facilitating repulping of the coated stock.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: August 12, 2003
    Assignees: Midwest Grain Products, Lawrence Paper Company
    Inventors: Sukh Bassi, Michael D. Cain, Alan M. Hill, Clodualdo C. Maningat, Li Nie
  • Patent number: 6596408
    Abstract: A phenol resin-impregnated sheet formed by impregnating a porous resin sheet with a phenol resin having a degree of cure of from 70% to 95% is arranged on and lamininated to the surface of a carbon fiber-reinforced thermosetting resin sheet. The thickness of the phenol resin impregnated sheet is between 0.01 mm and 1.0 mm. A very even, strong and water-proof wood reinforcing material is obtained. The wood reinforcing material is intergrated and cured on the surface of the wood material by the phenol resin-impregnated sheet to reinforce wood material (single board or bonded board) to form a reinforced wood material. The wood reinforcing material adheres suitably with the wood material and does not cause environmental contamination.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: July 22, 2003
    Assignee: Toho Tenax Co., Ltd.
    Inventors: Yoshihiro Endoh, Kazunori Taniguchi, Hiroyasu Ogawa, Shigehisa Ishihara, Isamu Ide, Hideo Getto, Satoshi Saito
  • Patent number: 6593006
    Abstract: A method of fabricating a decorative wood article includes the steps of applying a decorative overlay onto at least one surface of a wood article, applying a radiation curable powder coating onto the outer surface of the overlay, heating the applied radiation curable powder coating at a temperature sufficient to melt and flow the powder coating, and exposing the applied powder coating to radiation energy to cure the powder coating and form a film on the outer surface of the decorative overlay.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: July 15, 2003
    Assignee: O'Sullivan Industries, Inc.
    Inventor: David Russell Worsley
  • Patent number: 6589655
    Abstract: A veneer-based product is made of a plurality of veneer layers, a resin binding the layers, and a filler having a high thermal conductivity.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: July 8, 2003
    Assignee: Board of Control of Michigan Technological University
    Inventors: Laurent Malanda Matuana, Julia A. King
  • Patent number: 6586109
    Abstract: A method for not only preserving cellulose material from deterioration and from fire, but also for producing plywood, chip and particle aborad with an inexpensive and environmentally acceptable adhesive is described. The cellulose material is processed by spraying, immersing or being subjected to vacuum and pressure application in two steps. One step processes the cellulose material with a sodium silicate preservative solution. Another step processes the cellulose material with a gaseous carbon dioxide. Pressure application, moreover, can be varied in a range not to exceed 250 psi to improve product quality. Moistened cellulose material, treated in the foregoing manner, is coated with a comminuted protein, e.g. soybean meal, and pressed into a cellulose product, typically plywood and chip board.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: July 1, 2003
    Assignee: Premier Wood Treating, LLC
    Inventor: James N. Ray
  • Patent number: 6579622
    Abstract: A wood preservative composition which comprises water soluble acidic copper salts plus water soluble fatty amine salts in a weight ratio of from 0.1 to 10 parts water soluble fatty amine salt for each part of water soluble acidic copper salt. Methods for protecting wood from termites, decay, and mildew, and for reducing the ferrous metal corrosion properties of water soluble copper salts by using the disclosed composition are provided.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: June 17, 2003
    Inventor: Michael Howard West
  • Patent number: 6573203
    Abstract: The present invention may provide a towel desirably including first and second layers having cellulosic fibers and a repellant agent. The first and second layers may substantially sandwich a third layer having cellulosic fibers with higher absorbency than the first and second layers. All three layers may form a single ply.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: June 3, 2003
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Wesley James McConnell, Jay Chiehlung Hsu, Joseph Mitchell
  • Patent number: 6562479
    Abstract: A release agent for use in formation of a lignocellulosic composite product is provided. The release agent comprising at least one fatty acid. The release agent is capable of substantially preventing a mat comprising a lignocellulosic material and an adhesive bonding agent, formed within the confines of a formation area, from adhering to said formation area, when said release agent is introduced into said formation area. The release agent is also capable of substantially reducing deposits of either adhesive bonding agent or release agent which can accumulate in the formation area.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: May 13, 2003
    Assignee: Associated Chemists, Inc.
    Inventors: Douglas S. Smalley, Deanna L. Eckelman
  • Patent number: 6558795
    Abstract: A radiation curable coating contains an agent that imparts greater strippability to the cured coating. The agent can be included in the coating or in one or more subsequently applied maintenance coats.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: May 6, 2003
    Assignee: Ecolab Inc.
    Inventors: Keith E. Olson, Victoria Jeanne Jackson
  • Patent number: 6544649
    Abstract: A hog fuel board is made by placing a hog fuel mat including an ammonium chloride catalyst with flexible non-sticking layers on outside surfaces between screens in a preheated platen press and pressing the mat to preset stops and for a predetermined time and pressure to cause adhesives naturally present in the hog fuel to disperse throughout the board. The presence of ammonium chloride as a catalyst uniformly distributed through the hog fuel mat significantly lowers the temperature required at the heating press platens to form a board which also has improved properties. There is also described a hog fuel veneer board with a hog fuel mat sandwiched between veneer sheets and a lumber product with a hog fuel coating thereon. These additional products are both formed using the ammonium chloride catalyst to reduce press temperatures and create a product with improved properties, particularly, internal bond strength.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: April 8, 2003
    Assignee: Forintek Canada Corporation
    Inventor: Gary Ellis Troughton
  • Patent number: 6537680
    Abstract: Paper or paperboard laminate composed of at least one bulk-promoting layer, here termed the bulk layer, and on at least one side at the bulk layer at least one secondary layer, secondary layer and bulk layer being joined to one another directly or indirectly over basically the whole of their surfaces facing one another, 40-95% of the bulk layer consists of cellulose fibers with a freeness of 550-950 ml CSF, the secondary layer/layers has/have a greater density than the bulk layer, and the laminate has a bending stiffness index higher than 2.5 Nm7/kg3, but less than 14 Nm7/kg3, calculated as a geometric mean value for machine and transverse direction.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: March 25, 2003
    Assignee: Stora Kopparbergs Bergslags Aktiebolag (publ)
    Inventors: Leif Norlander, Annika Karlsson, Mats Fredlund
  • Patent number: 6534138
    Abstract: The invention pertains to a method for the manufacture of a packaging material (1; 21) for the production of packaging blanks and packages and comprising the steps of providing at least on surface layer (2, 2′; 22, 22′) in the form of a continuous material web and substantially consisting of cellulosic fibres and applying a distance layer (3; 23) comprising a matrix material and reinforcement fibres thereto so that said surface layer (2, 2′; 22, 22′) is bonded to said distance layer (3; 23). The matrix material in the distance layer (3; 23) is in an expandable state when it is applied to the surface layer (2, 2′; 22, 22′) and is expanded in a separate process step, subsequent to the application step. The invention also concerns expandable packaging materials.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: March 18, 2003
    Assignee: SCA Packaging Marketing NV
    Inventors: Alf Jonasson, Jeff Thornton
  • Publication number: 20030027010
    Abstract: A radiation curable coating contains an agent that imparts greater strippability to the cured coating. The agent can be included in the coating or in one or more subsequently applied maintenance coats.
    Type: Application
    Filed: April 20, 2001
    Publication date: February 6, 2003
    Applicant: Ecolab
    Inventors: Keith E. Olson, Victoria Jeanne Jackson
  • Patent number: 6511757
    Abstract: A system of compression molding a synthetic wood formulation into a commercially useable synthetic wood component is described. Surprising results are achieved when the dry formulation is placed under heat and pressure. Many different components may be made using the present invention, such as by example, wood-like trim components for the housing construction industry.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: January 28, 2003
    Assignee: Crane Plastics Company LLC
    Inventors: Jeffrey R. Brandt, Burch E. Zehner
  • Patent number: 6506501
    Abstract: The permanent shaping method avoids overcurling of hair tips. Prior to performing the permanent shaping of the hair, the hair tips are protected by wrapping the hair tips with an impregnated foil and then performing the permanent shaping of the hair. The foil is an impregnated hair-tip paper that has been treated with an aqueous preparation that provides superior permanent shaping results. This aqueous preparation contains water, from 20 to 70 percent by weight of at least one lipophilic substance; from 1 to 25 percent by weight of at least one emulsifier and from 0.5 to 15 percent by weight of at least one organic acid. An impregnated foil made from silk or rice paper is also described.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: January 14, 2003
    Assignee: Wella AG
    Inventors: Dieter Schonert, Gerhard Maresch, Gernot Mecks
  • Patent number: 6489040
    Abstract: A gypsum wall board is disclosed in which at least one of the paper cover sheets is made with neutral size and a small amount of a cationic polyamide resin is added to the stock used to make the cover sheet. The paper cover sheets provide improved resistance to post-manufacturing problems that involve delamination, such as “Roll-up”.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: December 3, 2002
    Assignee: United States Gypsium Company
    Inventors: Evan V. Rohlf, Charles W. Cochran
  • Patent number: 6428902
    Abstract: Pressure impregnation methods for preserving wood. The impregnant combines a wood preservative with a wax-surfactant-water emulsion. A cationic surfactant component made up of two different surfactants is preferred.
    Type: Grant
    Filed: August 14, 1995
    Date of Patent: August 6, 2002
    Assignee: Chemco Development LLC
    Inventors: Fred J. Amundson, Frank S. Tracino
  • Patent number: 6410158
    Abstract: A coated paper product having high gloss and brightness is prepared by a process wherein a paper substrate is coated on at least one side with an aqueous coating formulation comprising an effective amount of a plastic pigment, and finished in a supercalender device containing heated rolls to produce a surface which is comparable to a cast coated surface.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: June 25, 2002
    Assignee: Westvaco Corporation
    Inventors: Dean R. Johnson, Eric D. Johnson, James E. Shultz
  • Patent number: 6352786
    Abstract: A process for preparing a fire-resistant cellulosic material which comprises contacting cellulosic material with an aqueous solution of aluminum phosphate wherein the molar ratio of aluminum to phosphorous is less than 1:1, optionally containing a metal oxide, to form an initially treated cellulosic material containing aluminum phosphate and an increased amount of water, removing water from and curing said initially treated cellulosic material to form a fire-resistant cellulosic material. The cellulosic material is preferably wood and the wood is preferably a shingle or plywood.
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: March 5, 2002
    Assignee: Astaris LLC
    Inventors: Rose P. Arshinova, Edward J. Griffith
  • Patent number: 6328850
    Abstract: A multi-layered paper product. The paper product has individual layers for providing a soft tactile sensation to the user, for providing strength, and for providing bulk. Suitable fibers for increasing bulk may be synthetic fibers, debonded fibers, weakly bonded fibers, curled fibers, and fibers combined with particulate fillers. An exemplary embodiment having five layers is disclosed.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: December 11, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Dean Van Phan, Paul Dennis Trokhan
  • Patent number: 6296923
    Abstract: The invention provides polymeric films for the storage or packing of plant material, the film being perforate and having a water vapor permeability of not more than 800 g m−2 day−1 and an oxygen permeability of not more than 200000 cm3 m−2 day−1 atmosphere−1, both permeabilities being measured at 25° C. with a relative humidity of 75 percent. Examples of polymers which can be used to make the film are regenerated cellulose, homo and copolymers of polyolefins, e.g. with vinyl acetate or methyl acrylate, polyesters and polyamides. Various plant materials, for example carrots, tomatoes, calabrese and mushrooms heat sealed in packs of films of the invention have shown improved shelf lives compared with similar plant materials packaged for example in polyethylene cling film or polyvinyl chloride stretch wrap.
    Type: Grant
    Filed: June 8, 1994
    Date of Patent: October 2, 2001
    Assignee: Sidlaw Flexible Packaging Limited
    Inventor: Michael George Reinhardt Zobel
  • Patent number: 6180257
    Abstract: A system of compression molding a synthetic wood formulation into a commercially useable synthetic wood component is described. Surprising results are achieved when the dry formulation is placed under heat and pressure. Many different components may be made using the present invention, such as by example, wood-like trim components for the housing construction industry.
    Type: Grant
    Filed: October 29, 1996
    Date of Patent: January 30, 2001
    Assignee: Crane Plastics Company Limited Partnership
    Inventors: Jeffrey R. Brandt, Burch E. Zehner
  • Patent number: 6168870
    Abstract: A method of impregnating a polymer plastic plug with wood preservative. A first step involves dehydrating a polymer plastic plug to reduce its naturally occurring moisture content. A second step involves introducing liquid wood preservative into the polymer plastic plug while the polymer plastic plug is in a dehydrated state by immersing it in the liquid wood preservative and boiling the liquid wood preservative at temperatures that are less than that required to turn the polymer plastic plug into a molten state. In accordance with the teachings of this method liquid wood preservative is absorbed into the dehydrated polymer plastic plug in place of the naturally occurring moisture content.
    Type: Grant
    Filed: August 24, 1998
    Date of Patent: January 2, 2001
    Assignee: Genics Inc.
    Inventor: Wesley James Wall
  • Patent number: 6063883
    Abstract: A wood article is submitted to a vacuum in an autoclave to remove air that it contains. Then, a solution which contains a water-soluble cross-linkable prepolymer, a polymerization initiator and optionally a wood preservative is introduced into the autoclave. Polymerization to form a polymeric network in the wood article is carried out in an atmosphere which may be substantially free of oxygen, while the optionally present preservative is chemically fixed to the wood. The result is a wood article with a permanently reduced hardness and an increased moisture content at equilibrium.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: May 16, 2000
    Assignee: Hydro-Quebec
    Inventors: Andre Besner, Alain Vallee, Jean-Fran.cedilla.ois Labrecque, Roland Gilbert
  • Patent number: 5965485
    Abstract: An image-transfer ink ribbon which is prevented from unsuitable coloring of an image-protective layer thereon is disclosed, which includes a base film, at least one ink layer formed on one surface of the base film, an image-protective layer formed on the one surface of the base film so as to be arranged on the same plane where the at least one ink layer is formed, and a resin layer made of a resin having a low dye affinity and formed on the image-protective layer. In accordance with the present invention, there are also disclosed an image-transferred member prepared by using the image-transfer ink ribbon, and a method for the production of the image-transferred member.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: October 12, 1999
    Assignee: Sony Corporation
    Inventors: Motohiro Mizumachi, Satoru Shinohara, Kenichi Saito
  • Patent number: 5942336
    Abstract: A method for recycling contaminated flush water from a wet electrostatic precipitator emission control system in a wood panel fabrication process. The recycled flush water containing solid byproducts from the emission control system is combined with wood products in a wood panel fabrication mix in a predetermined ratio of flush water to wood products, resulting in a finished wood panel having improved internal bond strengths and formaldehyde scavenging capacity without the need for excess binding resins and formaldehyde scavengers.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: August 24, 1999
    Inventors: Blaine F. Sorenson, Gary A. Raemhild
  • Patent number: 5928777
    Abstract: A high pressure laminate is made of several layers of paper, including from bottom to top core sheets, a decor sheet and an overlay sheet. The core sheets are either composed of cellulose fibers or composed of 30 to 90 weight percent cellulose acetate fibers and 70 to 10 weight percent cellulose fibers. The core sheets are respectively coated with either a lamination polymer or a plasticizer. The decor sheet is composed of a mixture and a conventional amount of paper making dye. The mixture comprises 30 to about 90 weight percent cellulose acetate fibers, 10 to 70 weight percent cellulose fibers and 0 to 20 weight percent fillers. The decor sheet is coated with a plasticizer. The overlay sheet is composed of cellulose fibers and is coated with a lamination polymer. Upon application of heat and pressure to the several layers a laminate is formed having thermoplastic properties, improved postformability and a significant reduction in the release of volatile organics during formation.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: July 27, 1999
    Assignee: Eastman Chemical Company
    Inventors: Stephen Todd Cox, Melvin Glenn Mitchell, Paul Jay Kennedy, Guy Fostine Massie, Jr., Freddie Wayne Williams
  • Patent number: 5906894
    Abstract: A multi-ply paperboard comprising at least one ply of conventional cellulose fibers and from about 0.1 to about 6 weight percent of a water-borne binding agent; and at least one ply containing up to 20% of chemically intra-fiber crosslinked cellulosic high-bulk fibers and from about 0.1 to about 6 weight percent of a water-borne binding agent. The water-borne binding agent may be a starch, a modified starch, a polyvinyl alcohol, a polyvinyl acetate, a polyethylene/acrylic acid copolymer, an acrylic acid polymer, a polyacrylate, a polyacrylamide, a polyamine, guar gum, an oxidized polyethylene, a polyvinyl chloride, a polyvinyl chloride/acrylic acid copolymer, an acrylonitrile/butadiene/styrene copolymer or polyacrylonitrile. A method for making the paperboard is disclosed.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: May 25, 1999
    Assignee: Weyerhaeuser Company
    Inventors: Hugh West, Amar N. Neogi, Dwight A. Dudley, II, Dwayne M. Shearer
  • Patent number: 5786074
    Abstract: A magnetic recording medium having excellent reliability with minimum drop-out including a support film and a magnetic layer containing magnetic powder particles dispersed in a binder resin and a lubricant having a total extract content of from 10 to 100 mg/m.sup.2 and a content at the surface of the magnetic layer not larger than 1.0 mg/m.sup.2.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: July 28, 1998
    Assignee: Hitachi Maxell, Ltd.
    Inventor: Tadashi Soui
  • Patent number: 5766752
    Abstract: A high pressure laminate is made of several layers of paper, including from bottom to top core sheets, a decor sheet and an overlay sheet. The core sheets are either composed of cellulose fibers or composed of 30 to 90 weight percent cellulose acetate fibers and 70 to 10 weight percent cellulose fibers. The core sheets are respectively coated with either a lamination polymer or a plasticizer. The decor sheet is composed of a mixture and a conventional amount of paper making dye. The mixture comprises 30 to about 90 weight percent cellulose acetate fibers, 10 to 70 weight percent cellulose fibers and 0 to 20 weight percent fillers. The decor sheet is coated with a plasticizer. The overlay sheet is composed of cellulose fibers and is coated with a lamination polymer. Upon application of heat and pressure to the several layers a laminate is formed having thermoplastic properties, improved postformability and a significant reduction in the release of volatile organics during formation.
    Type: Grant
    Filed: December 7, 1995
    Date of Patent: June 16, 1998
    Assignee: Eastman Chemical Company
    Inventors: Stephen Todd Cox, Melvin Glenn Mitchell, Paul Jay Kennedy, Guy Fostine Massie, Jr., Freddie Wayne Williams
  • Patent number: 5759704
    Abstract: Disclosed is an easily biodegradable composite formulated with cellulosic fibers of wood pulp and recycled pulp and fiber components of fruits and vegetables, and a paper product obtainable from said composite. The purpose is to provide paper products effectively utilized strained lees of juices being wastes of fruits and vegetables and fruits and vegetables of poor commercial value in the market.
    Type: Grant
    Filed: May 22, 1996
    Date of Patent: June 2, 1998
    Assignee: Takasaki Paper Mfg. Co., Ltd.
    Inventors: Hajime Horiuchi, Teruo Simizu, Kazuji Nonaka
  • Patent number: 5744251
    Abstract: The present invention relates to compounded fibrous dope compositions of amine oxide cellulose solutions having a uniformly dispersed second fibrous material, methods of producing the compositions, and shaped articles such as fibers, paper, films, and food casings produced from the compositions.
    Type: Grant
    Filed: April 15, 1996
    Date of Patent: April 28, 1998
    Assignee: Viskase Corporation
    Inventors: Paul Edmund DuCharme, Jr., Norman Abbye Protnoy, John Markulin, Myron Donald Nicholson
  • Patent number: 5731096
    Abstract: A wood article is submitted to a vacuum in an autoclave to remove air that it contains. Then, a solution which contains a wood preservative, a water-soluble cross-linkable prepolymer and a polymerization initiator is introduced into the autoclave. Polymerization to form a polymeric network in the wood article is carried out in an atmosphere substantially free of oxygen, while the preservative is chemically fixed to the wood. The result is a wood article with a permanently reduced hardness and an increased moisture content at equilibrium.
    Type: Grant
    Filed: August 4, 1995
    Date of Patent: March 24, 1998
    Assignee: Hydro-Quebec
    Inventors: Andre Besner, Alain Vallee, Jean-Francois Labrecque, Roland Gilbert
  • Patent number: 5716690
    Abstract: A composite furniture leg includes an elongate molded core body having outer and inner sides, a hard wood reinforcing block embedded in a top part of the core body at the inner side of the core body, an outer laminate shell layer for covering the outer side of the core body, and an inner wood cover layer for covering the inner side of the core body. The core body, the outer shell layer and the inner cover layer are hot pressed to form the furniture leg.
    Type: Grant
    Filed: December 8, 1995
    Date of Patent: February 10, 1998
    Inventor: Don-Fong Yeh
  • Patent number: 5676909
    Abstract: Discussed is a method of preventing the physical degradation of an archival article due to exposure to environmental impurities by applying to a substrate a coating composition containing (i) an alkaline buffer capable of neutralizing acidic components from the environment of the archival article; and (ii) an adsorbent capable of removing chemical components from the environment of the archival article, drying the composition on the substrate to form a coated material; and preventing the physical degradation of the archival object by positioning the coated material in proximity to an archival article.
    Type: Grant
    Filed: August 11, 1995
    Date of Patent: October 14, 1997
    Inventor: William K. Hollinger, Jr.
  • Patent number: 5631078
    Abstract: A thermoplastic film is comprised of an admixture of 20 to 85 weight percent cellulose ester fibers and 80 to 15 weight percent cellulose fibers and a functional amount of a cellulose ester plasticizer. The film has an opacity in the range of 10 to 85 percent, a thickness in the range of 0.002 to 0.010 inch, a porosity in the range of 0.0 to 50 ml/min/cm.sup.2 at a 1.0 centibar pressure drop and a compostability of less than 65 days fragmentation. The film is prepared by making a paper comprised of 20 to 85 weight percent cellulose ester fibers and 80 to 15 weight percent cellulose fibers and saturating the paper with a functional amount of a cellulose ester plasticizer. The saturated paper is subjected to heat and pressure for a period of time to obtain the thermoplastic film. The thermoplastic film is prepared without the use of solvents and is economically attractive since it is compatible with conventional paper printing materials and techniques.
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: May 20, 1997
    Assignee: Eastman Chemical Company
    Inventors: Eric E. Ellery, Melvin G. Mitchell, Charles K. Crosswhite, Donald W. Monk
  • Patent number: 5626969
    Abstract: A method of one sided laminating and a one sided laminated product using nylon laminating film reduces the tendency of one-sided laminations to curl toward the laminating side due to moisture swelling of the paper side of the lamination.
    Type: Grant
    Filed: September 27, 1993
    Date of Patent: May 6, 1997
    Assignee: General Binding Corporation
    Inventor: Luis Joson
  • Patent number: 5560996
    Abstract: Color images with high fixation comparable to that of silver salt photographic images are formed on printing papers, using aqueous ink compositions by ink jet recording. Color images thus formed have high saturation and high resolution. An intercalated compound capable of fixing water-soluble dyes to a printing paper due to the intercalation based on ion-exchanging between them is incorporated into the dye-receiving layer 2 of the paper, on which color images are formed by ink jet recording using an aqueous ink composition containing a water-soluble dye. The content of the intercalated compound in the layer 2 is from 10 to 90% by weight. As the intercalated compound, montmorillonoids are preferred when water-soluble cationic dyes are used while hydrotalcite-group minerals are preferred when water-soluble anionic dyes are used. FIG. 1 is selected.
    Type: Grant
    Filed: July 7, 1994
    Date of Patent: October 1, 1996
    Assignee: Sony Corporation
    Inventors: Kengo Ito, Yoshio Fujiwara
  • Patent number: 5498385
    Abstract: A biodegradable composite laminate for the manufacture of packaging containers is provided. The composite laminate includes a straight-chain, biodegradable 3-hydroxybutyric acid/3-hydroxyvaleric acid copolyester in a thin film which has been laminated on at least one surface of a sheet-like substrate. A polymeric blend of a poly-.epsilon.-caprolactone with the straight-chain copolyester may be employed in the place of the straight-chain copolyester alone. The method for the manufacture thereof is also provided.
    Type: Grant
    Filed: October 26, 1994
    Date of Patent: March 12, 1996
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Kazuya Yabusa, Takeo Kato, Tetsuo Aizawa, Masayuki Taniguchi
  • Patent number: 5451456
    Abstract: A latex comprises a colloidal suspension in water of essentially non-crystalline particles of a polymer or copolymer or .beta.-hydroxyalkanoates, for example .beta.-hydroxybutyrate and .beta.-hydroxyvalerate; the latex may be employed to produce self-supporting filfms or papers which are biodegradable and also readily recyclable.
    Type: Grant
    Filed: August 18, 1992
    Date of Patent: September 19, 1995
    Assignee: Pulp and Paper Research Institute of Canada
    Inventors: Robert H. Marchessault, Pierre F. LePoutre, Peter E. Wrist
  • Patent number: 5434011
    Abstract: A method for manufacturing a peat moss board suitable for use as an absorbent core in structures for absorbing body exudate. The method is characterized by conditioning a wet laid board to a specific water content and calendering the conditioned board at a predetermined pressure. The water content and the calendering pressure determine the density of the peat moss board in final form. The invention also extends to a peat moss board manufactured by the novel method.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: July 18, 1995
    Assignee: Johnson & Johnson Inc.
    Inventor: Martin Roy
  • Patent number: 5409772
    Abstract: A biodegradable composite laminate for the manufacture of packaging containers is provided. The composite laminate comprises a straight-chain, biodegradable 3-hydroxybutyric acid 3-hydroxyvaleric acid copolyester in a thin film which has been laminated on at least one surface of a sheet-like substrate.A polymeric blend of a poly-.epsilon.-caprolactone with the straight-chain copolyester may be employed in the place of the straight-chain copolyester alone.The method for the manufacture thereof is also provided.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: April 25, 1995
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Kazuya Yabusa, Takeo Kato, Tetsuo Aizawa, Masayuki Taniguchi
  • Patent number: 5397634
    Abstract: A novel transfer element for protecting, graphic arts images is disclosed. The transfer element consists essentially of, a temporary carrier layer, a substantially silane-free protective layer, and an adhesive layer permanently adhered to the protective layer. In particular, the temporary carrier layer is a polymeric sheet material, a foraminous sheet material, or composites thereof; and the protective layer comprises a cross-linked cellulose ester. When the transfer element of this invention is used, the temporary carrier layer is removed, as the final step, from the protective layer which remains substantially intact. The transfer element is useful in manufacturing protected images of all sizes and is particularly suited to protecting large format images such as billboards.
    Type: Grant
    Filed: July 22, 1993
    Date of Patent: March 14, 1995
    Assignee: Rexham Graphics Incorporated
    Inventors: Douglas A. Cahill, Richard S. Himmelwright, Francis J. Kearney, Joseph M. Roach
  • Patent number: 5393725
    Abstract: A thermal transfer system comprises, in combination, an ink ribbon which has an ink layer containing a dye and a printing sheet having an image-receiving layer. In the system, when the ink layer is heated in an imagewise pattern, the dye in the ink layer is melted or sublimated and transferred to the image-receiving layer in the imagewise pattern. The dye in the ink layer is selected from the group consisting of disazo dyes, isothiazole azo dyes and mixtures thereof and the image-receiving layer comprises a cellulose ester resin. The printed matter obtained has good light fastness and fading resistance in the dark comparable to silver salt photographs. The ink ribbon and the printing sheet are also provided, respectively.
    Type: Grant
    Filed: November 23, 1992
    Date of Patent: February 28, 1995
    Assignee: Sony Corporation
    Inventors: Tetsuya Abe, Toshio Fukuda, Yoshio Fujiwara
  • Patent number: 5358784
    Abstract: A tubular food casing based on cellulose, which on its inner surface has a coating which comprises lecithin and at least one of alginate, chitosans, and casein, has improved peelability from its contents.
    Type: Grant
    Filed: March 5, 1992
    Date of Patent: October 25, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Klaus-Dieter Hammer, Manfred Siebrecht, Hermann Winter
  • Patent number: 5345738
    Abstract: An insulating sheathing panel has an insulating core, such as foam, sandwiched between PMDI impregnated cover sheets. The resulting panels offer structural reinforcement as well as insulating qualities to a building framework.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: September 13, 1994
    Assignee: Weyerhaeuser Company
    Inventor: Alkiviadis G. Dimakis
  • Patent number: 5320903
    Abstract: The present invention is to provide a modified cellulose regenerated fiber having a practically endurable tenacity, and being excellent in dye-affinity, and having anti-funguses and deodorizing properties. The present invention comprises preliminarily molding chitosan or acetylated chitosan into a fine particle, mixing the fine particle body with cellulose viscose prior to spinning, and spinning the mixture, at the inclusion regenerated fiber.
    Type: Grant
    Filed: February 12, 1992
    Date of Patent: June 14, 1994
    Assignee: Fuji Spinning Co., Ltd.
    Inventors: Tsuguhisa Hirukawa, Hiroaki Tanibe, Tuguo Miyaji
  • Patent number: 5308663
    Abstract: A biodegradable nonwoven fabric and molded vessel suitable to throwaway use such as in domestic, wrapping, agricultural, gardening, and civil engineering field. A web of cellulose-based fibers are combined with chitosan salt and an interfiber binder comprising a combination of chitosan salt and fine cellulose, or by combined use of the interfiber binder and physical combining techniques. They are naturally decomposed by microorganisms in the soil and can dissolve the polution problems.
    Type: Grant
    Filed: October 23, 1991
    Date of Patent: May 3, 1994
    Assignees: Kanai Juyo Kogyo Company Limited, Director, General of Agency of Industrial Science and Technology
    Inventors: Mutuo Nakagawa, Yasuo Nakagawa, Masaaki Nishida, Jun Hosokawa, Masashi Nishiyama, Takamasa Kubo, Kazutoshi Yoshihara
  • Patent number: RE35151
    Abstract: The present invention is to provide a modified cellulose regenerated fiber having a practically endurable tenacity, and being excellent in dye-affinity, and having anti-funguses and deodorizing properties. The present invention comprises preliminarily molding chitosan or acetylated chitosan into a fine particle, mixing the fine particle body with cellulose viscose prior to spinning, and spinning the mixture, at the inclusion regenerated fiber.
    Type: Grant
    Filed: February 1, 1995
    Date of Patent: January 30, 1996
    Assignee: Fuji Spinning Company, Limited
    Inventors: Tsuguhisa Hirukawa, Hiroaki Tanibe, Tuguo Miyaji