Combined Processes Patents (Class 162/201)
  • Patent number: 10751724
    Abstract: A crushing device includes a horizontal shaft impact crusher having an impeller rotating around a horizontal shaft and at least one curtain against which material may be crushed. The crushing device further includes a first feeding device for feeding a first type of material to be crushed to a crushing chamber of the horizontal shaft impact crusher. A second feeding device feeds a second type of material, having a smaller average particle size than the first type of material, to the crushing chamber simultaneously with the first feeding device feeding the first type of material to the crushing chamber. A mixing arrangement for at least partially mixes the first and the second types of materials with each other before bringing them into contact with the impeller.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: August 25, 2020
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Rowan Dallimore, Andreas Forsberg, Knut Kjaerran
  • Publication number: 20140000823
    Abstract: A method of splitting hollow cellulosic fibers employs the steps of wetting the fibers, feeding the wet fibers to a gaseous flow, and conducting the gaseous flow carrying the fibers through a venturi tube, the pressure drop in the venturi tube throat bringing a pressure difference between liquid inside the fibers and gas outside of the fibers and causing the fibers to split in their longitudinal direction, to open the lumen inside the fibers.
    Type: Application
    Filed: December 16, 2011
    Publication date: January 2, 2014
    Inventor: Reijo K. Salminen
  • Patent number: 8328986
    Abstract: A disclosed laminated sheet to be wound around an outer surface of an exhaust gas processing unit includes a first mat containing first inorganic fibers and a second mat containing second inorganic fibers, the second mat being laminated on the first mat. The average fiber length of the first inorganic fibers is larger than the average fiber length of the second inorganic fibers and the laminated sheet is to be wound around the exhaust gas processing unit such that the first mat forms an outermost layer. Development of cracks in the outer surface of the laminated sheet can be prevented by winding the laminated sheet around an exhaust gas processing unit such that the first mat faces outward.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: December 11, 2012
    Assignee: Ibiden Co., Ltd.
    Inventor: Satoru Kariya
  • Patent number: 7988823
    Abstract: Textured non-woven webs, papermaking fabrics and tissue sheets made using the textured papermaking fabrics can contain design elements set in highlight areas which make the design elements more visible.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: August 2, 2011
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Mark Alan Burazin, Cristina Asensio Mullally, Andrew Peter Bakken, Robert Eugene Krautkramer
  • Publication number: 20110133442
    Abstract: A method for increasing adhesion between a security element (e.g., a security strip or band) and a fibrous sheet material such as paper is provided. Also provided by way of this invention is a security element laminated to one or more activatable adhesive films, a fibrous sheet material having such a laminated structure contained on or within a surface thereof, or at least partially embedded therein, and a document (e.g., a security document such as a banknote) made from such a fibrous sheet material.
    Type: Application
    Filed: June 11, 2009
    Publication date: June 9, 2011
    Inventors: Douglas A. Crane, Giles D. Prett
  • Publication number: 20110116658
    Abstract: Natural fiber is beaten with a biaxial kneading machine. The beaten natural fiber is processed finely with a bead mill so as to allow the processed natural fiber to have a BET specific surface area not smaller than 1 m2/g. This method provides fine fiber in a short time to form a rigid paper component.
    Type: Application
    Filed: September 4, 2008
    Publication date: May 19, 2011
    Applicant: Panasonic Coporation
    Inventors: Kazuyoshi Mimura, Yukihiro Shimasaki, Hiroshi Shinkoda, Toshiyuki Koike
  • Patent number: 7803248
    Abstract: The invention includes a method and system for generating electricity using a drive for the electrical generator that is powered by an engine that uses high pressure hot gases produced by combustion of a fuel and an oxygen bearing gas, using at least a portion of the electricity generated to power manufacturing plant equipment and using the waste hot exhaust gases from the heat engine, such as a gas turbine, with or without a heat exchanger, in an oven in which the mat is carried through continuously on a belt, drum or with other conventional means to dry the wet fibrous mats. Optionally the fibrous mats can contain a binder and the hot waste gases can be optionally used to cure a binder.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: September 28, 2010
    Assignee: Johns Manville
    Inventors: Daniel Pinkham, Jr., Gerard Joseph Demott, Gary Groner
  • Publication number: 20090188642
    Abstract: An improved method for making compressed structural fiberboard by extruding agricultural fibrous matter into said compressed structural fiberboard. The improved method of the present invention includes providing a preselected volume of agricultural fibrous matter and preconditioning the agricultural fibrous matter to have a predetermined moisture level therein. The agricultural fibrous matter is separated and cleaned, and steam is added to the agricultural fibrous matter until a predetermined level of moisture is reached within the agricultural fibrous matter. A predetermined level of borax is also added to the agricultural fibrous matter to prevent the formation of bacteria within the agricultural fibrous matter.
    Type: Application
    Filed: January 24, 2008
    Publication date: July 30, 2009
    Applicant: AGRIBOARD INDUSTRIES
    Inventors: Paul H. Pittman, David G. Pyles
  • Publication number: 20080251226
    Abstract: A xerographic paper and method of forming includes mechanical fiber and a predetermined curl control defined by a split sheet contraction measurement. The split sheet contraction can be between about 0.8 and about 1.2 and between about 0.9 and about 1.1. Split sheet contraction is defined by a relationship of paper shrinkage in a cross-direction to paper shrinkage in a machine-direction and between the two sides of the sheet when split in the Z-direction.
    Type: Application
    Filed: April 10, 2007
    Publication date: October 16, 2008
    Inventor: Bruce Irwin Katz
  • Publication number: 20080185115
    Abstract: A paper machine includes a clothing carried by a plurality of rolls. At least one of the rolls is movable to exert a selected tension load on the clothing. The clothing includes auxetic fibers. By moving one of the rolls to exert a selected tension and/or press load on the clothing, a thickness of the auxetic fibers is modified to become thinner under a lesser load or thicker under a greater load.
    Type: Application
    Filed: February 7, 2007
    Publication date: August 7, 2008
    Inventors: Antony Morton, Josef Hubert Walkenhaus
  • Publication number: 20080179030
    Abstract: A method of manufacturing an industrial fabric comprising the steps of knitting a first fabric strip portion having two widthwise edges and a width that is narrower than the industrial fabric to the desired length of the industrial fabric, forming the first fabric strip portion into an endless loop by joining the widthwise edges with a CD seam, placing the first fabric strip portion around two rotatably mounted rolls and knitting a second fabric portion to the desired length of the industrial fabric, where knitting of the second fabric portion proceeds along the first edge of the first fabric portion and is a knitted continuation thereof. Alternatively, knitted fabric strips can be joined together in a spiral fashion to create a full width industrial fabric.
    Type: Application
    Filed: January 31, 2007
    Publication date: July 31, 2008
    Inventors: Joseph Gerald O'Connor, Maurice Paquin, Dana Burton Eagles, Francis L. Davenport
  • Publication number: 20070151690
    Abstract: A method for affecting moisture content of a sheet of paper includes providing a moisture measuring device disposed in a papermaking machine to measure the moisture content of a sheet of paper and create a moisture profile of the sheet of paper, determining the moisture profile of the sheet of paper, and providing a water-spraying device to spray water on a press felt that contacts the sheet of paper during manufacturing. The method further includes selecting one or more zones on the press felt on which to spray water based on the moisture profile of the sheet of paper, and acting on the press felt by spraying water in the one or more selected zones on the press felt to affect the moisture content of the sheet of paper that contacts the press felt after the water has been sprayed.
    Type: Application
    Filed: November 22, 2006
    Publication date: July 5, 2007
    Inventors: Ross K. MacHattie, Ron E. Beselt
  • Patent number: 6902770
    Abstract: The invention provides an improved method of transparentizing a paper substrate to produce a translucent area or “window” through which information and data are displayed. The method of the invention applies a transparentizing material to a preselected application site of the paper substrate, and exposes the transparentizing material to heat for a predetermined period of time to help facilitate penetration of the transparentizing material into the paper substrate and prevent migration of the transparentizing material from the application site. The rate of penetration of the transparentizing material into the paper substrate reduces the time and increases the efficiency of the transparentizing process. The invention also provides a paper substrate and a one-piece paper assembly in which a translucent area or “window” is formed according to the method of the invention.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: June 7, 2005
    Assignee: Infoseal L.L.C.
    Inventors: Roger A. Dulin, Robert A. DeMattia, Bryan S. O'Mary, Michael Burris
  • Patent number: 6863774
    Abstract: A polishing pad for use in chemical mechanical polishing of substrates that being made of fibrous matrix such as cellulose with a binder consisting of thermoset resin material, such as phenolic resin. The polishing surface is ground to form asperities. The polishing pad provides a porous structure by which polishing slurry and polishing debris during chemical mechanical polishing of substrates are stored for subsequent rinsing away, and for enhanced flow-distribution of the polishing slurry. Also disclosed is a method of making the polishing pad.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: March 8, 2005
    Assignee: Raytech Innovative Solutions, Inc.
    Inventors: Richard D. Cooper, Paul Fathauer, Angela Mroczek-Petroski, David Perry, James J. Petroski
  • Patent number: 6837452
    Abstract: A process for making singulated pulp flakes is provided. The process includes dewatering liquid pulp stock to a consistency of about 30 to about 50% solids. The process includes initial flaking to break up the dewatered pulp bundles into semi-uniform flakes having a median size of from about 3 to about 5 mm3 and a consistency of from about 33 to about 55% solids. The process includes drying the flaked pulp to a consistency of from about 85 to about 97% solids. The process includes flaking a second time to separate the flakes that may have bonded during drying. The product “singulated” flakes then go to a baler for packaging. In another embodiment, the process includes blending the liquid pulp stock with at least one adjuvant prior to dewatering.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: January 4, 2005
    Assignee: Weyerhaeuser Company
    Inventors: Ramon C. Dezutter, Brian Wester, Robert A. Veleber, Michael R. Hansen
  • Publication number: 20040250975
    Abstract: The present invention concerned with a paper-manufacturing system characterized in that the system is composed of a head box (10) for providing pulp fluid which is located at the upper part between the our wire part and the felt a out wire part (20) which is composed of a wire roll (21), a wire guide roll (22), a water tray (23), a forming roll (24) and a wire belt (25) and plays a role for enabling the wire rolls (about 5˜6 rolls) (21) to rotate the wire belt around the wire loop. The surface of the wire rolls is coated with elastomer such as rubber or any other elastic materials.; a press part (40) which is composed of a suction press roll (41), a second touch roll (42), a felt guide roll (43), a felt roll (44) and a felt (45) and a dryer part. The present paper manufacturing system, the inner wire part present in the conventional system is omitted and the inner wire part is replaced with felt loop and two processes are omitted to one process.
    Type: Application
    Filed: December 31, 2002
    Publication date: December 16, 2004
    Inventor: Jin-hwa Jeon
  • Patent number: 6787574
    Abstract: Alkenyl succinic anhydride (ASA) size emulsions are prepared using a grafted cationic acrylamide starch co-polymer as an emulsification agent. The ASA size emulsions of the present invention exhibit significantly greater stability compared to presently available ASA size emulsions. The grafted starch co-polymer also is a more efficient emulsification agent for ASA size, permitting the use of less emulsification agent, thereby saving cost.
    Type: Grant
    Filed: October 24, 2000
    Date of Patent: September 7, 2004
    Assignee: Georgia-Pacific Resins, Inc.
    Inventors: Charles E. Farley, George Anderson, Karla D. Favors
  • Patent number: 6784126
    Abstract: A high pulp content nonwoven composite fabric is disclosed. The composite fabric contains 1) from more than about 0 to less than about 30 percent, by weight, of a nonwoven layer of conjugate spun filaments, the filaments containing at least one low-softening point component and at least one high-softening point component and having at least some exterior surfaces of the filaments composed of at least one low-softening point component; 2) more than about 70 percent, by weight, of pulp fibers; and 3) regions in which the low-softening point component at the exterior surfaces of the filaments is fused to at least a portion of the fibrous component. This high pulp content composite nonwoven fabric may be used as a heavy duty wiper or as a fluid distribution material, cover material, and/or absorbent material in an absorbent personal care product. Also disclosed is a method of making the high pulp content nonwoven composite fabric.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: August 31, 2004
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Cherie Hartman Everhart, Danial Owen Fischer
  • Patent number: 6602385
    Abstract: A method of improving the brightness of calcium carbonate filled paper. The filled paper is dried and then bleached with an aqueous solution of a bleaching agent. The process may be used on all grades of paper that contain filler and is particularly useful in the bleaching of low brightness grade papers that are produced from mechanical pulp that contain calcium carbonate.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: August 5, 2003
    Assignee: Minerals Technologies Inc.
    Inventor: Donald Kendall Drummond
  • Patent number: 6569287
    Abstract: The present invention relates to a system and method of making paperboard and paperboard corrugation that negates the steps of winding rolls of containerboard on machine reels of separate paper machines, subsequent rewinding and slitting of paperboard and unwinding rolls of containerboard on separate corrugators.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: May 27, 2003
    Assignee: The Hoffman Group, Ltd.
    Inventor: Roger P. Hoffman
  • Patent number: 6372094
    Abstract: A pulp drying line which comprises a pulp press for pre-drying the pulp and a defibrator for shredding the pre-dried pulp into a loose pulp. The drying line further comprises a web forming section and a pulp dryer section. The loose pulp coming from the defibrator is spread in the web forming section in a layer on an air-permeable forming base, from which the air-permeable pulp web thus formed is taken through the dryer section supported by an air-permeable support fabric, such as a wire. The pulp is not formed into a pulp web during pre-drying.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: April 16, 2002
    Assignee: Metso Paper, Inc.
    Inventors: Pertti Heikkilä, Paavo Sairanen
  • Publication number: 20020006760
    Abstract: A nonwoven fabric suitable to be used as a kitchen paper including thermoplastic synthetic fibers being 7˜30 mm long and as fine as of 0.1˜0.8 d, in 90˜10% by weight and pulp fibers being 2˜7 mm long, in 10˜90% by weight, these component fibers being mixed together as homogeneously as possible and mechanically entangled so as to have a basis weight of 10˜80 g/m2 as a whole.
    Type: Application
    Filed: December 23, 1998
    Publication date: January 17, 2002
    Inventors: TOSHIO KOBAYASHI, MIOU SUZUKI, NAOHITO TAKEUCHI
  • Patent number: 6217708
    Abstract: A double-side and full color transfer paper for electrophotography having a paper layer divided into a felt side and a wire side, wherein the difference between the orientation of fiber in the felt side and that in the wire side of the paper layer is 0.1 to −0.1, and both of residual curvature of the transfer paper in a MD (in a movement direction of a paper machine) and that in a CD (in a direction perpendicular to the MD) are included in a range from 7 to −7 m−1 and the expansion ratio of the transfer paper in the CD is 0.55 or lower, if necessary.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: April 17, 2001
    Assignees: Fuji Xerox Co., Ltd., Oji Paper Co., Ltd.
    Inventors: Tsutomu Kurihara, Katsumi Harada, Masaru Kato, Harumi Watanabe
  • Patent number: 6024836
    Abstract: A process and device for producing a pulp web utilizes several independently driven aggregates (i.e., discrete groups) to attain a median web dry content of, e.g., 60%. The number of driven aggregates may depend upon an initial wet strength of the wet pulp web. The relationship is such that when the initial wet strength is relatively high, the number of drier groups is small and when the initial wet strength is relatively low, the number of drier groups is large. However, each drier group includes only a few drier cylinders. The first drier group may include either one or two cylinders, and each subsequent drier group may include at least one drier cylinder more than the adjacent upstream drier group.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: February 15, 2000
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Hans-Peter Sollinger, Markus Oechsle
  • Patent number: 6017419
    Abstract: A metering size press rod assembly specifically for use in a paper-making machine is stored and transported in a container and use in the paper-making machine. A plurality of metering size press rod assemblies are assembled. A storage sand transport container is provided at shipping location. The container includes a plurality of elongate openings therein. Each metering size press rod assembly is loaded into a corresponding one of the elongate openings in the container. The container is then transported to a user location, the metering size press assemblies are then sequentially and individually removed from the container, used in the papermaking machine and reloaded into the elongate openings in the container. The container with the used metering size press rod assemblies is the transported back to the shipping location.
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: January 25, 2000
    Assignee: Voith Sulzer Paper Technology North America, Inc.
    Inventors: Edwin X. Graf, James A. Eng
  • Patent number: 5961784
    Abstract: A method for reducing the consumption of fresh water and energy in a paper mill in which fresh water is passed into the paper mill for various needs, and a cooling tower is utilized for cooling water heated in the papermaking process. All fresh waters or a substantial proportion of the fresh waters of the paper mill are introduced into the process through the water system of the cooling tower. The cooling tower includes at least one inlet for passing the water to be cooled into the cooling tower, nozzles for discharging the water that was passed in and that is to be cooled onto heat transfer faces, filler pieces and/or filler plates, which disperse the water to be cooled so as to increase the contact area between the water and the cooling air, at least one outlet for passing the cooled water out of the cooling tower, and blowers for blowing the cooling air through the cooling tower.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: October 5, 1999
    Assignee: Valmet Corporation
    Inventors: Pertti Heikkila, Henrik Pettersson, Iikka Sipila, Markku Saarinen, Rainer Gartz
  • Patent number: 5958186
    Abstract: Nonwoven material produced by hydroentanglement of a wet-laid or foam-formed fibre web. The material comprises a mixture of short plant fibres, in particular pulp fibres, and long hydrophillic plant fibres, where the major portion of the fibres presents a fibre length which is at least 10 mm, whereby the portion of long fibres is at least 1 weight-% of the fibre weight. The fibres were mixed with each other in the presence of a dispersing agent which allows a uniform fibre formation, in a wet-laid or foam-formed fibre web which has been hydroentangled with sufficient energy to form a compact absorbing material.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: September 28, 1999
    Assignee: SCA Hygiene Products Aktiebolag
    Inventors: Ulf Holm, Ebbe Milding
  • Patent number: 5834095
    Abstract: Disclosed is a process for treating cellulosic fibers using high temperatures that is effective to result in modified cellulosic fibers that exhibit desired properties such as water retention values and wet curl values. The high temperature process is quite efficient and has been found to produce cellulosic fibers that are essentially uniformly treated. Also disclosed is a handsheet prepared from the treated cellulosic fibers for use in disposable absorbent products.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: November 10, 1998
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Jacek Dutkiewicz, Krzysztof Andrzej Szymonski, Gerard Martin Aberson, Tong Sun
  • Patent number: 5672306
    Abstract: Disclosed is an adsorbent fibrous nonwoven structure composed of a matrix of pulp fibers having a first exterior surface and a second exterior surface; and an adsorbent material integrated into the pulp fiber matrix so that the concentration of adsorbent material adjacent the first exterior surface of the nonwoven structure is at least about 60 percent, as determined by optical image analysis, and the concentration of adsorbent material adjacent the second exterior surface is less than about 40 percent, as determined by optical image analysis. This adsorbent nonwoven structure provides useful strength and low-lint characteristics. The fibrous nonwoven structure of the present invention may be laminated together or to surfaces of other materials.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: September 30, 1997
    Assignee: Kimberly-Clark Corporation
    Inventors: Troy Alan Sprang, Annmarie Veronica Douglas, Benji Dawn Morgan
  • Patent number: 5626719
    Abstract: A process for increasing the resistance of the cut edges of liquid packaging board to penetration by hot hydrogen peroxide, comprising adding to an aqueous pulp slurry at a neutral to alkaline pH, either separately or in preblended form an aqueous emulsion of a cellulose-reactive size, a non-cellulose-reactive size selected from the group consisting of waxes, bis-stearamides, and fatty acid derivatives, and a thermosetting resin that is capable of covalent bonding to cellulose fibre and self-cross-linking.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 6, 1997
    Assignee: Hercules Incorporated
    Inventors: Anthony C. Tansley, John D. Ballantine
  • Patent number: 5505820
    Abstract: A paper rawstock web is wet densified on a papermachine at a moisture content greater than about 20% and less than about 50%, and preferably from about 25-35%, in a calender device at nip pressures greater than about 3000 psi, and preferably within the range of from about 3000-6000 psi, to provide fiber springback resistance and irreversibly smooth surfaces which are substantially resistant to loss of smoothness upon rewetting, as for example in a subsequent surface sizing or coating process. Wet densification according to the present invention produces a web having greater density and increased internal bond strength, as compared with webs treated by conventionally known methods, to achieve the irreversibly smooth surfaces.
    Type: Grant
    Filed: January 11, 1995
    Date of Patent: April 9, 1996
    Assignee: Westvaco Corporation
    Inventors: Douglas W. Donigian, Suzanne S. Fenton, Bryan J. Ortman, Hiawatha P. Watkins
  • Patent number: 5393601
    Abstract: A non-woven solidified by means of a melt binder is described, which is based on supporting aramid fibers and on binding fibers made of thermoplastic aramids whose melting point is below the melting or decomposition point of said supporting aramid fibers. In the non-woven, the binding fibers are virtually completely melted. The non-wovens are distinguished by high strength.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: February 28, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Karl Heinrich, Hans-Joachim Bruning, Elke Gebauer
  • Patent number: 5389202
    Abstract: A high pulp content nonwoven composite fabric is disclosed. The composite fabric contains more than about 70 percent, by weight, pulp fibers which are hydraulically entangled into a continuous filament substrate. This high pulp content composite nonwoven fabric may be used as a heavy duty wiper or as a fluid distribution material, cover material, and/or absorbent material in an absorbent personal care product. Also disclosed is a method of making the high pulp content nonwoven composite fabric.
    Type: Grant
    Filed: June 9, 1993
    Date of Patent: February 14, 1995
    Assignee: Kimberly-Clark Corporation
    Inventors: Cherie H. Everhart, Daniel O. Fischer, Fred R. Radwanski, Henry Skoog
  • Patent number: 5324391
    Abstract: A method is disclosed for preparing a quantity of individual treated fibers from one or more fiber mats in a treatment apparatus. The apparatus comprises a fiber treatment zone, a conveyor for conveying each mat through the fiber treatment zone, wherein each mat is impregnated by an applicator with a crosslinking substance, and directly to an attrition device. The attrition device fiberizes the mats to form a fiber output having a low nit level, such as no more than about three, and a dryer for both drying the fiber output and curing the crosslinking substance. The fiberizer is configured to have minimize the accumulation of fiber at locations therein. An optional component of the fiberizer is a novel fluff generator comprised of multiple rotors each having plural longitudinally extended rows of radially extending rotor pins that rotate past groups of shorter pins mounted on the inside surface of the fluff generator housing.
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: June 28, 1994
    Assignee: Weyerhaeuser Company
    Inventors: Allan R. Carney, Peter A. Graef, Mark W. Bowns, Clifford R. Bolstad, Fred E. Olmstead
  • Patent number: 5238648
    Abstract: A hermetic enclosure assembly, having utility for preservational storage and/or display of objects susceptible to degradation by exposure conditions such as ultraviolet radiation, visible light, oxygen, humidity, microbial, fungal, and insect species, internal acidity and external acidic gases, and the like. The enclosure assembly includes a gas-impervious housing, a mounting base, and a back cover plate, with an oxygen indicating means in communication with an interior volume of the enclosure assembly, and a slow vapor-released deacidification medium being arranged for dispersing deacidification medium vapor into the interior volume of the enclosure assembly. Also disclosed is an appertaining method of preservationally and protectively enclosing an object for storage and/or display. The invention has particular utility in the storage and/or display of cellulosic objects, which are especially susceptible to embrittlement and decay at low pH conditions, in exposure to visible light, oxygen, and moisture.
    Type: Grant
    Filed: June 3, 1992
    Date of Patent: August 24, 1993
    Inventor: Irwin Kremen
  • Patent number: 5066363
    Abstract: A method of processing pulp laps and a soluble strap material for holding such laps in a bale are disclosed. In accordance with the method the laps are maintained in the configuration of the bale by soluble straps comprised of PVA and are immersed in a pulping bath while still confined by the straps. The straps rupture and dissolve in the pulping bath releasing the paper laps. The straps are formed to maximize exposure of the PVA increments to the pulping bath to accelerate dissolving and may incorporate fillers of pulpable material to maintain the PVA increments in a separated condition.
    Type: Grant
    Filed: August 3, 1990
    Date of Patent: November 19, 1991
    Assignee: C. M. Offray & Son, Inc.
    Inventors: Richard P. Lee, Joseph F. Ley, John A. Mortensen
  • Patent number: 5061344
    Abstract: Soft paper from cellulose fibres is manufactured by wet-forming a first fibre layer. Thereafter air-borne dry fibres are deposited directly on one or both sides of the wet-formed layer while this is still wet, so that a second and possibly a third fibre layer are formed on the first one. Fibre bindings thereby arise between the layers. The wet-formed fibre layer gives the soft paper its strength, while the dry-formed fibers give a soft surface.
    Type: Grant
    Filed: March 14, 1989
    Date of Patent: October 29, 1991
    Assignee: Sunds Defibrator Aktiebolag
    Inventors: Irene K. Wedin, Bo R. Ek
  • Patent number: 5026456
    Abstract: An aramid paper which has high porosity while exhibiting the usual tensile properties is disclosed. The paper has good saturability and a smooth surface while retaining high break strength.
    Type: Grant
    Filed: June 14, 1990
    Date of Patent: June 25, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Lee J. Hesler, Stanley C. Park
  • Patent number: 5023126
    Abstract: A folded towel and a method for making a folded towel comprised of a composite product including one surface formed by smooth tissue and an opposite surface formed by an absorbent dry formed fabric product.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: June 11, 1991
    Assignee: Fort Howard Corporation
    Inventors: William P. Stevens, Mark E. Dowey
  • Patent number: 4917762
    Abstract: A liquid absorbing pad, in particular for use in hygiene articles and sanitary products, such as diapers, bed pads, sanitary napkins, pads for incontinence, panty shields, nursing pads or the like, is produced in a dry and direct process on the basis of wet-strength and/or coated paper waste, especially originating from the production of food packages, milk carton packages, deep-freeze packages, disposable tableware and the like. The waste is cut and defibrated, and during the defibration or just before it a maximum of 25% by volume, based on the volume of the paper waste, of a mixture of water and a surfactant is added to reestablish the absorption capacity of the fibres. Starting materials otherwise difficult to process can thus be used in a dry and direct process.
    Type: Grant
    Filed: June 23, 1988
    Date of Patent: April 17, 1990
    Inventor: Peter Dalki r
  • Patent number: 4728394
    Abstract: Disclosed is a semipermeable membrane support and a process for making the same. The support is formed of a non-woven fabric of a laminated structure having a low density layer with an air permeability of 5 to 50 cc/cm.sup.2 /sec and a high density layer with an air permeability of 0.1 cc/cm.sup.2 /sec to 5 cc/cm.sup.2 /sec, the non-woven fabric having an overall air permeability of 01 to 4.5 cc/cm.sup.2 /sec. The process for preparing such a support consists of laminating a dry processes web, which comprises entirely polyester fibers containing 20 to 80% of undrawn polyester fiber or conjugate polyester fibers having an average fiber denier of 1 to 3 denier formed through a dry process, and an un-press-treated wet processed web, which comprises entirely polyester fibers containing 30 to 90% of undrawn polyester fibers or conjugate polyester fibers having fiber denier of 0.1 to 1.
    Type: Grant
    Filed: March 19, 1986
    Date of Patent: March 1, 1988
    Assignee: Firma Carl Freudenberg
    Inventors: Ietsugu Shinjou, Rikuo Shoji
  • Patent number: 4504357
    Abstract: A security with a paper substrate which exhibits identifying marks in the form of color patterns. The color patterns are arranged in the substance of the paper substrate in such a manner that the normal structure of the fibres in the substance of the paper layer is not disturbed by the color patterns. In the manufacture of the security, the color pattern is sprayed on to the not yet completely finished non-woven fibre during the formation of the paper sheet, and is preferably sprayed on to a non-woven fibre which is then united to a second non-woven fibre.
    Type: Grant
    Filed: October 26, 1983
    Date of Patent: March 12, 1985
    Assignee: GAO Gesellschaft fuer Automation und Organisation mbH.
    Inventors: Hans-Jurgen Holbein, Paul Leiderer, Walter Schneider
  • Patent number: 4486268
    Abstract: A method and apparatus especially adapted to produce a ply separable web requiring substantially less energy input for drying. The apparatus comprises a headbox having at least three stock flow channels, at least one of which being adapted to convey conventional aqueous stock solutions and at least one other channel adapted to convey airborne fibers. The resulting web, having a significant portion of the fibers in a dry state, requires less energy to dry, and the distinct layers provide shear zones therebetween which permit ply separation upon creping. Different fiber types may be provided in different layers depending upon product attributes desired, and the products may be conventionally dried or may be throughdried. An alternative embodiment requires the mixing of airborne fibers with an aqueous solution adjacent to or within the headbox, producing only surface wetting of the fibers and reduced inter-fiber bonding.
    Type: Grant
    Filed: July 14, 1982
    Date of Patent: December 4, 1984
    Assignee: Kimberly-Clark Corporation
    Inventors: David A. Nuttall, Sung Ho Hong
  • Patent number: 4476323
    Abstract: The invention relates to new surface-active quaternary ammonium compounds having the general formula: ##STR1## wherein: R.sub.1 and R.sub.2 are each hydrocarbon groups having from about twelve to about forty carbon atoms;R.sub.3 and R.sub.4 are selected from the group consisting of methyl, ethyl and hydroxyethyl;A is an oxyalkylene group derived from both ethylene oxide and propylene oxide, having a ratio of oxyethylene units to the total number of oxyalkylene groups within the range from about 1:6 to about 5:6;m is a number corresponding to the valence of X;n.sub.1 and n.sub.2 represent the average number of oxyalkylene units and are within the range from about 6 to about 30; andX is an anion.The compounds impart to the treated textiles and cellulosic materials a reduced tendency to retain an electrostatic charge and/or improved softness and/or reduced mechanical strength due to a reduction in interfiber bonding, and at the same time preserve good hydrophilic properties.
    Type: Grant
    Filed: February 24, 1981
    Date of Patent: October 9, 1984
    Inventors: Karl M. E. Hellsten, Jan G. Emanuelsson, Svante L. Wahlen, Axel I. Thebrin
  • Patent number: 4435248
    Abstract: A process for producing photographic paper comprising bleaching a paper web containing from 0 to 65% by weight water is disclosed.
    Type: Grant
    Filed: December 1, 1980
    Date of Patent: March 6, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Shun Arakawa
  • Patent number: 4432833
    Abstract: The invention provides a cellulosic pulp having reduced interfiber bonding and therefore reduced physical strength while maintaining excellent hydrophilic properties. The pulp is produced by treating the cellulosic fibers with a hydrophilic debonder having the general formula: ##STR1## wherein: R.sub.1 =methyl, ethyl, propyl, hydrogen or hydroxyethyl,R.sub.2 =methyl, ethyl, propyl or [ethylene oxide].sub.n where N=1 to 50,R.sub.3 =aliphatic chain of at least 4 carbon atoms,R.sub.4 =[ethylene oxide].sub.n or [propylene oxide].sub.n with N=1 to 50,X-Cl, I, Br, SO.sub.4.sup.-, PO.sub.4.sup.--, CH.sub.3 CO.sub.2.
    Type: Grant
    Filed: February 25, 1982
    Date of Patent: February 21, 1984
    Assignee: Kimberly-Clark Corporation
    Inventor: John A. Breese
  • Patent number: 4431481
    Abstract: Cellulosic fibers, characterized by a lack of swellability and incapable of natural fiber-to-fiber bonding, are produced by a process which comprises treating an aqueous slurry of the fibers with a formaldehyde-free polymeric compound, heating the treated fibers to cause the polymeric compound to react with the fibers, and refiberizing to separate individual, treated fibers. The fibers are useful in the preparation of improved cellulosic webs characterized primarily by their increased bulk and improved softness.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: February 14, 1984
    Assignee: Scott Paper Co.
    Inventors: John E. Drach, Cleveland O'Neal, Jr.
  • Patent number: 4344818
    Abstract: A method and apparatus especially adapted to produce a ply separable web requiring substantially less energy input for drying. The apparatus comprises a headbox having at least three stock flow channels, the outer channels being adapted to convey conventional aqueous stock solutions, with at least one inner channel adapted to convey airborne fibers. The resulting web, having a significant portion of the fibers in a dry state, requires less energy to dry, and the distinct layers provide shear zones therebetween which permit ply separation upon creping. Different fiber types may be provided in different layers depending upon product attributes desired, and the products may be conventionally dried or may be throughdried. An alternative embodiment requires the mixing of airborne fibers with an aqueous solution adjacent to or within the headbox, producing only surface wetting of the fibers and reduced interfiber bonding.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: August 17, 1982
    Assignee: Kimberly-Clark Corporation
    Inventors: David A. Nuttall, Sung H. Hong
  • Patent number: 4309244
    Abstract: A process is disclosed for producing a non-woven, boron nitride-bonded boron nitride fiber mat, suitable for use as an electric cell separator in a lithium-sulfide battery. Molten boron oxide is centrifugally spun into strands and attenuated by an annular gas stream into fibers which are compacted at a controlled relative humidity into a bundle and heated in an anhydrous ammonia atmosphere to convert boron oxide in the fibers to boron nitride (BN). The BN fibers are blended with a lesser amount of boron oxide fibers and a nonaqueous liquid medium to form a slurry. The slurry is processed through a Fourdrinier machine to form a felt; and, the felt is calendered by passing it through the nip of a pair of calender rolls at an appropriate temperature and pressure to soften the boron oxide binder to fuse the BN fibers together. The interstitial boron oxide then is converted to boron nitride.
    Type: Grant
    Filed: March 28, 1980
    Date of Patent: January 5, 1982
    Assignee: Kennecott Corporation
    Inventors: John L. Tworek, Gordon R. Rignel
  • Patent number: 4309245
    Abstract: A process is disclosed for producing a non-woven boron nitride (BN) fiber felt. Boron nitride fibers are blended with a lesser amount of boron oxide fibers and a nondissolving, anhydrous liquid medium to form a homogeneous slurry. The slurry is deposited on the moving screen of a Fourdrinier machine where the liquid content is gradually reduced until sufficient fiber to fiber contact is made to provide internal cohesiveness, to form a felt. The felt may be further treated by heating it in an anhydrous gas atmosphere at a sufficient temperature to soften the boron oxide binder to fuse the BN fibers together, and then converting the interstitial boron oxide into boron nitride. The resulting boron nitride-bonded boron nitride felt may be used as an electric cell separator in a lithium sulfide battery.
    Type: Grant
    Filed: March 28, 1980
    Date of Patent: January 5, 1982
    Assignee: Kennecott Corporation
    Inventors: John L. Tworek, Gordon R. Rignel