Impregnation Of Batt, Sheet, Or Filament Patents (Class 264/136)
-
Patent number: 4359437Abstract: A method of manufacturing a thin-walled article of synthetic resin, in particular a large-sized article, while using an inner and an outer template, the synthetic resin being supplied via one or more apertures in one of the two template portions and whereby a partial vacuum is maintained via one or more air discharge apertures downstream of the synthetic resin front.Type: GrantFiled: March 10, 1981Date of Patent: November 16, 1982Assignee: Le Comte-Holland B.V.Inventor: Adolf le Comte
-
Patent number: 4347287Abstract: A system and method for forming a segmented pultruded shape is provided in which a continuous length of fiber reinforcements are impregnated with a matrix material and then formed into a continuous series of alternating rigid segments and flexible segments by curing the matrix material impregnating the rigid sections and removing the matrix material impregnating the flexible sections.Type: GrantFiled: August 14, 1980Date of Patent: August 31, 1982Assignee: Lord CorporationInventors: Armand F. Lewis, Chen-Chi M. Ma, Hoa Quach, Edward J. Krasnicki
-
Patent number: 4342718Abstract: A material web impregnated with a settable synthetic resin travels in vertical direction, from the bottom towards the top, through a first heat treatment zone where the solvent of the synthetic resin or plastic is evaporated and there occurs a chemical reaction. The tacky material web departing from the first heat or thermal treatment zone then passes through a cooling zone where it is cooled by means of a cooling medium to such a degree that it does not stick to the deflection or diverting rolls over which the material web subsequently is guided. After deflection of the material web the latter is moved in vertical direction downwardly through a second heat treatment zone where the chemical reaction proceeds. Prior to winding-up of the material web the latter is further cooled.Type: GrantFiled: July 25, 1980Date of Patent: August 3, 1982Assignee: Sinter LimitedInventor: Hans-Peter Caratsch
-
Patent number: 4328108Abstract: A method for the elimination of circumferential stress cracks that occur during production of spun polyesters is provided. The cracks are eliminated by the use of an organic solvent miscible with the lubricating emulsion applied during the finish operation before draw twisting of the spun polyester. The organic solvent may be kerosene or mineral oil or solutions containing the same.Type: GrantFiled: September 20, 1979Date of Patent: May 4, 1982Assignee: The Goodyear Tire & Rubber CompanyInventor: William O. Deeken
-
Patent number: 4297409Abstract: A material primarily for replacing asbestos-cement products includes a reinforcing network of continuous, fibrillated organic film and a water-hardened mass such as Portland cement and sand or alternatively gypsum. The organic film may be a polyolefin such as polypropylene or high modulus polyethylene. The reinforcement may be incorporated as a woven or non-woven network.A process for making such a material is also described.The material has, in some respects, superior properties in relation to those of asbestos-cement.Type: GrantFiled: November 6, 1979Date of Patent: October 27, 1981Assignee: University of SurreyInventor: David J. Hannaht
-
Patent number: 4294709Abstract: A spin finish composition for textile fibre or yarn including a lubricant and antistatic agent, optionally an additional emulsifier and an antioxidant, in which the antistatic agent is an N,N'-dialkylamino alcohol alkoxylate. The finish is less prone to coking of heater plates in yarn texturing machines.Type: GrantFiled: January 10, 1980Date of Patent: October 13, 1981Assignee: Imperial Chemical Industries LimitedInventors: Norman Anderson, Richard Peak, James A. Moyse
-
Patent number: 4287146Abstract: A nib-type writing pen is formed by compressing a plurality of fibers into a bundle, extruding a plastic sheath around the fiber bundle, cutting the sheathed fiber bundle to a suitable length and injecting a urethane prepolymer into one or both ends of the cut and sheathed fiber bundle.Type: GrantFiled: October 6, 1978Date of Patent: September 1, 1981Inventor: Yoshio Midorikawa
-
Patent number: 4263187Abstract: A method of preparing shaped polypyrrolidone articles having a high degree of tensile strength comprising forming said articles from solutions of polypyrrolidone in hydrous formic acid and drawing said articles while impregnated with said hydrous formic acid. The invention also includes the step of enhancing the tenacity of shaped polypyrrolidone articles by impregnation thereof with hydrous formic acid and drawing said impregnated articles.Type: GrantFiled: June 6, 1978Date of Patent: April 21, 1981Inventor: Challoner R. Chute
-
Patent number: 4261943Abstract: This invention relates to a process for treating the surface of cellulosic shaped products such as fibers, films filaments, yarns and the like, formed from a spinning dope of a solution of cellulose in amine oxide, by applying to the surface of the product a nonsolvent liquid that will reduce the solvent action of the amine oxide for cellulose at the surface of the product.Type: GrantFiled: July 2, 1979Date of Patent: April 14, 1981Assignee: Akzona IncorporatedInventor: Clarence C. McCorsley, III
-
Patent number: 4251581Abstract: A structured, permanently moldable textile sheet is impregnated on the backside only with an aqueous synthetic resin dispersion, comprising a synthetic resin which comprises 75-95% by weight of a thermoplastic component and 5-25% by weight of a plasticizing component. The resultant impregnated sheet is thereby reinforced and can be permanently molded and glued to an underlying surface without additional preprocessing.Type: GrantFiled: October 21, 1977Date of Patent: February 17, 1981Assignee: Chemische Werke Huels A.G.Inventors: Claus Schoppa, Wilhelm Fortmann, Armin Stei
-
Patent number: 4247505Abstract: Polymers are melt spun by extruding threadlines of filaments from a spinneret; quenching the filaments through a quench zone; reducing the tension on the threadlines of filaments to a value substantially equal to the tension at the hereinafter-mentioned winding point, by converging each threadline of filaments to form a strand while applying a lubricant; and winding each strand on a spool at a take-up speed of at least about 1800 meters per minute, and without further reducing the tension by means, such as godets. Apparatus for carrying out the method is described. The convergence means may be adjustable to change the position thereof relative to the bottom of the quench zone.Type: GrantFiled: May 5, 1978Date of Patent: January 27, 1981Assignee: Phillips Petroleum CompanyInventor: Henry G. Jackson
-
Patent number: 4242407Abstract: An improved process for the manufacture of shaped articles from water-hardening materials reinforced with multiple layers of a fibrillated organic film. A plurality of networks are formed from fibrillated organic films and are simultaneously advanced into contact with a water-hardening material to form a composite layer of the networks impregnated with the water-hardening material. This layer is thereafter formed into the desired configuration for the shaped article, and allowed to set. The average number of meshes within the networks with a minimum of two per square centimeter and the number of networks within the layer are such that the average number of meshes per cubic centimeter of the final shaped article is at least 100.Type: GrantFiled: December 19, 1978Date of Patent: December 30, 1980Assignee: Stamicarbon, B.V.Inventor: Jan M. J. M. Bijen
-
Patent number: 4237591Abstract: A sanitary napkin is provided containing a perfume composition and means for inhibiting migration of components of the perfume composition. Means comprise providing within the napkin at least one elongated narrow strip element. The strip element carries the perfume composition and extends generally longitudinally within the napkin. Preferably, the strip element is a cellulosic string.Type: GrantFiled: February 5, 1979Date of Patent: December 9, 1980Assignee: Personal Products CompanyInventor: James A. Ginocchio
-
Patent number: 4205032Abstract: The present invention provides a method of rigidizing articles of refractory fibres. This is achieved by impregnating the fibre article with a zirconium salt, a gellation-inducing agent and a gellation-delaying agent.Type: GrantFiled: February 12, 1979Date of Patent: May 27, 1980Assignee: Zirconal Processes LimitedInventors: Ian R. Walters, Harold G. Emblem
-
Patent number: 4201823Abstract: This invention is directed to an improved process for making fiber reinforced articles comprising the steps of (a) applying a preformed plastic shell having the configuration of the desired article to a holding fixture therefore having sealing means at the peripheral edges thereof; (b) applying to the surface of the shell fibrous reinforcement material; (c) introducing to the reinforcement material a liquid plastic resin mixture; (d) applying to the surface of the resin mixture-containing reinforcement material a preformed plastic membrane having the configuration of the desired article; (e) sealing the peripheral edges of the membrane to the peripheral edges of the holding fixture to provide a molding system; (f) applying a vacuum to the molding system to compact the molding system and to draw said resin mixture throughout the reinforcement material; (g) hardening the resin mixture; and (h) separating the resulting article from said plastic membrane and said holding fixture.Type: GrantFiled: October 16, 1978Date of Patent: May 6, 1980Assignee: Rohm and Haas CompanyInventor: Larry M. Russell
-
Patent number: 4199367Abstract: Alloy rayon staple fibers containing about 15 to 35% sodium carboxymethylcellulose based on the weight of cellulose ("b.o.c.") and having high fluid holding capacity at least 5.5 cc per gram (such as in the range of up to about 7 cc/g) measured by the Syngyna test.Type: GrantFiled: April 22, 1977Date of Patent: April 22, 1980Assignee: Avtex Fibers Inc.Inventor: Frederick R. Smith
-
Patent number: 4176447Abstract: In a sodium sulphur cell, a cathode electrode of annular form comprising a plurality of segments, each of trapezoidal form in cross-section is made by compressing a blanket or sheet of carbon or graphite felt or fibres in a heated mould, which is shaped to produce the segments joined by thin webs, the material being impregnated with sulphur or sodium polysulphide before or after insertion in the mould, and the material being cooled before removal from the mould. Alternatively, the segments may be formed from the blanket or sheet by using shaped rolls, the mateial being cooled, e.g., by water or air, as it leaves the rolls.Type: GrantFiled: December 19, 1977Date of Patent: December 4, 1979Assignee: Chloride Silent Power LimitedInventor: Michael P. J. Brennan
-
Patent number: 4164535Abstract: Textile materials are made with a binder to which is added an alkylene-urethane thermosensitive copolymer of the formula:(O.dbd.C.dbd.N).sub.x --R--[--NH--CO--O--(C.sub.n H.sub.2n --O).sub.p --R'].sub.ywhereinR is an aliphatic or aromatic moiety which contains a biuret, urethane or isocyanate group;R' is hydrogen, C.sub.1 to C.sub.8 straight or branched chain alkyl, aryl or alkylaryl;X ranges from 0 to 1 inclusive;Y is greater than 2;N has a value of 1 to 4 inclusive; andP is greater than 5 and the binder is controlled to have a pH of less than 5,5 at activation so that the textile material is antistatic.Type: GrantFiled: October 18, 1977Date of Patent: August 14, 1979Assignee: Manufacture de Produits Chimiques Protex S.A.Inventor: Georges Veaute
-
Patent number: 4161503Abstract: A method of making a multitubular sheath comprising providing a porous multitubular fabric impregnated with thermoplastic or deformable polymer, continuously feeding the fabric onto an array of parallel metal rods, one tube to each rod, the rods having straight sizing portions, while holding the rods in a fixed position, the rods having substantially the same cross sectional area over the whole of their length, the fabric at least immediately prior to the sizing portions being substantially at ambient temperature, heating the fabric on the sizing portions so as to permit the fabric to conform to the rod, thereafter cooling the fabric on the rods to solidify or the deformable composite material to set to shape and the tubes to become self supporting, feeding the fabric off the ends of the rods and cutting it to the required length.Type: GrantFiled: March 3, 1977Date of Patent: July 17, 1979Assignee: Chloride Group LimitedInventors: Stanley C. Foulkes, Robert Moore, James Ratcliffe, James M. Stephenson
-
Patent number: 4157752Abstract: The disclosure is of impression surface conveyor belting and a method for its manufacture. The belting comprises a plurality of substantially parallel textile yarns of a specific character, integrated (in a unitary structure) with a layer of consolidated staple fibers and encapsulated in a matrix of flexible elastomer or resin. Included in the integral structure is an impression wear surface of partially isolated matrix material containing a portion of the consolidated staple fibers (a fiber bundle) which are continuously anchored in a portion of the non-isolated belting matrix. The belting of the invention is useful to manufacture non-laminated, impression surface, conveyor belts which exhibit advantageous properties of wear resistance, stability in running and structural integrity.Type: GrantFiled: April 6, 1978Date of Patent: June 12, 1979Assignee: Albany International Corp.Inventors: Paul J. Sick, James W. Hazel
-
Patent number: 4153660Abstract: The disclosure relates to cospinning and drawing polyester filaments to produce a composite yarn which develops bulk due to differential shrinkage of the filaments when heated. Filaments of ethylene terephthalate synthetic linear condensation polymer are melt spun to form two separate filament bundles, a water-based spring finish is applied to the filaments of one bundle and a substantially non-volatile spin finish is applied to filaments of the other filament bundle, the filament bundles are drawn under identical treatment conditions during passage along separate paths and the filaments are then combined and intermingled during passage around draw rolls. The product is a mixed-shrinkage yarn wherein the filaments treated with aqueous-based finish have a higher heat-shrinkage than the filaments treated with non-volatile finish, even though both are otherwise processed in the same manner.Type: GrantFiled: October 28, 1977Date of Patent: May 8, 1979Assignee: E. I. Du Pont de Nemours and CompanyInventor: Cecil E. Reese
-
Patent number: 4137618Abstract: Spherical friction or sliding bearings are produced by first making a laminate from a layer of a thermosetting resin and a layer of material having a low friction coefficient. The thermosetting resin is used to impregnate a first web or fabric. The low friction coefficient material may be provided in the form of a further webbing or fabric, for instance, made of polytetrafluoroethylene. The thermosetting material may, for example, be a phenolic resin which is at this point of manufacture in its A-state and hence tacky. In order to permit the immediate further processing of the laminate with the thermosetting resin still in its tacky A-state, a dry adhesive film which neutralizes the tackiness, is applied to the laminate in sandwich formation which is then cut into pieces or strips of suitable size. The sandwich strips are then placed into a mold and pre-shaped and precision cut at room temperatures while the resin is still in its A-state.Type: GrantFiled: May 2, 1977Date of Patent: February 6, 1979Assignee: Erma-Werke Waffen- und Maschinenfabrik GmbHInventor: Dieter Krauss
-
Patent number: 4133287Abstract: A master cylinder reservoir molded of glass fiber filled nylon. An integrally molded window in a side wall is thinner than the reservoir walls and has a lower concentration of fibers so that it is sufficiently translucent to permit visual determination of the level of hydraulic brake fluid in the reservoir by observation through the window. The method of making the reservoir by molding, in which the flow of fibers into the window section is restricted to reduce the fiber concentration in the window and make it more translucent, is also disclosed.Type: GrantFiled: February 13, 1978Date of Patent: January 9, 1979Assignee: General Motors CorporationInventor: Thomas C. Downs
-
Patent number: 4121002Abstract: An integral antenna window is fabricated in a fiber-reinforced, resin matrix composite by the controlled localized removal of resin to provide a window area after which the area containing reinforcing fibers is impregnated with a second resin.Type: GrantFiled: July 6, 1977Date of Patent: October 17, 1978Assignee: The United States of America as represented by the Secretary of the Air ForceInventor: R. Bruce Baldwin
-
Patent number: 4112037Abstract: The disclosure is of a method of making air filter fabrics from non-woven, thermoplastic, synthetic polymeric resin, staple textile fibers and of the fabrics so made. The method comprises providing a non-woven web of the fibers, coating the fibers with a fiber stabilizing agent, pressing the fibers together so as to rupture the film at cross-over points and fusing the fibers together at the sites of the ruptured film. The product filter fabrics are characterized by controlled high permeability, strength, wear resistance, dimensional stability, lint free surfaces and advantageous particle release properties.Type: GrantFiled: January 31, 1977Date of Patent: September 5, 1978Assignee: Albany International Corp.Inventors: Roy B. Parker, Richard R. Saindon
-
Patent number: 4104781Abstract: A fibre bundle is first formed from loosely entangled fibres. A sheath is formed over the fibre bundle and one end is dipped into an urethane prepolymer to fill the spaces among fibres with the urethane prepolymer. After removal from the prepolymer it is left to stand for a period of time during which the constituents in the urethane prepolymer react to form polyurethane and generate carbon dioxide gas which forms many capillary passages for the transudation of ink. By grinding the dipped end a marking pen is obtained having a nib and an ink reservoir integral therewith.Type: GrantFiled: June 10, 1976Date of Patent: August 8, 1978Assignee: Glasrock Products, Inc.Inventor: Yoshio Midorikawa
-
Patent number: 4102965Abstract: The invention is related to a process for the production of continuous polyamide-6-filaments present in the .gamma.-modification both before and after stretching at room temperature by spinning polyamide-6 with a relative solution viscosity of from 2.3 to 3.1, preferably from 2.6 to 2.85, as measured on a 1% solution in m-cresol, wherein the filaments (a) after leaving the spinneret, are cooled by air-blowing and preoriented up to an elongation at break of from 50 to 80%, preferably from 55 to 75%, by being run off, preferably in the absence of godets, at a speed of 3700 to 4500 m/min; (b) before winding into package form and during take-off, are prepared with an aqueous preparation oil in such a way that they contain less than 3.0% by weight of water, and (c) before winding into package form are subjected to interlacing.Type: GrantFiled: March 10, 1976Date of Patent: July 25, 1978Assignee: Bayer AktiengesellschaftInventors: Harry Kubitzek, Karlheinz Feltgen, Friedrich-Karl Rosendahl
-
Patent number: 4102975Abstract: A method of forming a flexible sheetlike structure such as an automotive headliner by treating a sheet of fiberboard or other similar material with water at an elevated temperature to make the sheet sufficiently ductile to permit forming without tearing or blowing, and placing the water-treated sheet between heated dies to form the sheet to a compound curvature by the application of heat and pressure. The sheet may or may not be perforated. The method also includes finishing one side of the die-formed sheet by securing a decorative or sound-absorbing layer thereto. The sheet is placed on a support and the layer is applied over the adhesive coated upper surface of the sheet. A cover is draped over the support to provide an air seal over the layer and sheet and is drawn against the support by differential pressure, either pressure or vacuum to press the layer against the sheet and adhere the two together.Type: GrantFiled: March 1, 1976Date of Patent: July 25, 1978Assignee: Van Dresser CorporationInventor: Richard P. Doerer
-
Patent number: 4065534Abstract: Disclosed is a method of preparing an asbestos diaphragm containing a thermoplastic resin. According to the method disclosed herein, an asbestos mat is prepared by drawing the asbestos mat from a salt free, aqueous, asbestos slurry, providing the resin, and thereafter heating the mat to form the resin reinforced mat.Type: GrantFiled: April 20, 1976Date of Patent: December 27, 1977Assignee: PPG Industries, Inc.Inventors: Thomas A. Rechlicz, Bernard A. Maloney
-
Patent number: 4058581Abstract: A unidirectional fiber reinforced thermoplastic stock material is prepared by passing fibers through a resin solution to coat the fibers. The coated fibers are treated to remove the solvent and thereafter are consolidated into the desired shape.Type: GrantFiled: October 28, 1976Date of Patent: November 15, 1977Assignee: Exxon Research & Engineering Co.Inventor: Im K. Park
-
Patent number: 4054713Abstract: Glass fiber mats are prepared by binding glass fibers with a resinous component, wherein the resinous component is an unsaturated polyester resin powder having a melting point of 80.degree. to 130.degree. C and a molecular weight of 2,500 to 7,000 obtained by reacting (A) one mole of a dicarboxylic acid component comprising an .alpha.,.beta.-unsaturated dicarboxylic acid or anhydride thereof, alone or in admixture thereof with a saturated dicarboxylic acid, with (B) 0.9 to 1.1 moles of a polyol component containing at least 50 molar percent of bis(.beta.Type: GrantFiled: May 28, 1976Date of Patent: October 18, 1977Assignee: Kao Soap Co., Ltd.Inventors: Kahei Sakaguchi, Massaaki Minakata, Shigeru Takamori, Jun-ichi Furukawa, Yoshinao Kono
-
Patent number: 4053546Abstract: Method of making a leather-like sheet material having a low bounce impact elasticity, which comprises: (a) mixing (i) a solvent solution of a polymer (A) consisting mainly of an elastomer and (ii) a dispersion in a liquid of a polymer (B) consisting mainly of an elastomer, thereby obtaining a composite solution containing fine particles of (B) dispersed in a solution of polymer (A); (b) coating a sheet or impregnating a fibrous mat substrate with the composite solution; (c) immersing the substrate in a coagulation bath to deposit and coagulate both polymers; and (d) drying said sheet or mat.Type: GrantFiled: December 24, 1975Date of Patent: October 11, 1977Assignee: Kuraray Co., Ltd.Inventors: Tsuyoshi Yamasaki, Kunio Kogame
-
Patent number: 4051215Abstract: The present invention relates to a process for treating woven textile fabrics. In one aspect, the present invention relates to a process for imparting elasticity to a woven textile fabric in its warp direction in which a cellulose reactive resin solution is applied to a woven textile fabric, the fabric compressed in its warp direction by means of a rubber roller and an elastic flexible belt, and then fixed in its altered state.Type: GrantFiled: December 31, 1975Date of Patent: September 27, 1977Assignee: Unitika Kabushiki KaishaInventors: Motohiro Tsuruta, Hiroshiro Kimura, Akio Koshimo, Hirohisa Nara, Tokuju Goto, Kunio Amemiya
-
Patent number: 4051214Abstract: An improved method of controlling monomer loss during the production of a fiber-thermoplastic matrix by in situ bulk polymerization is described, the improvement allowing polymerization to greater than 25% polymer content by weight of the matrix within less than eight minutes. A fibrous web of less than 0.25-inch thickness, saturated with a liquid phase polymerizable composition containing a vinyl monomer and a thermally activated free radical initiator at 1/2-10% by weight of the composition is polymerized under controlled conditions in which the matrix is: (a) confined between heat transfer surfaces at 0.Type: GrantFiled: January 14, 1977Date of Patent: September 27, 1977Assignee: Weyerhaeuser CompanyInventors: Richard R. Casper, Myron P. Marander
-
Patent number: 4048278Abstract: A method for making a dimensionally-stable shaped article (comprising at least one one layer of asbestos paper treated with a mineral acid selected from sulfuric acid, hydrochloric acid and phosphoric acid), including placing the treated asbestos paper sheet on a mould in a substantially pressureless manner and then allowing it to dry at normal room temperature.Type: GrantFiled: April 19, 1976Date of Patent: September 13, 1977Assignee: Intalite International N.V.Inventor: George D. Mosky
-
Patent number: 4031181Abstract: A composite game racket having improved stiffness and uniformity and method of making same. Rackets are light bats consisting of a netting stretched in an open frame attached to a handle and which are used for striking the ball in tennis and similar games. The racket comprises a shell with a high strength fiber reinforced plastic facing laminated to each face of the shell. A preferred fiber orientation in the novel facing is disclosed. The facing is made by a method including steps of arranging a resin impregnated fiber tow in a mold, placing resin impregnated fiber cloth sheets over the tow in a specific selected arrangement and curing the resin under pressure in the mold. The shell may be internally recessed in a truss-like pattern to provide lightness with strength. The handle of the racket includes a pair of plastic pallets secured to the handle portion of the shell and covered with a covering material, such as a thin leather strip winding.Type: GrantFiled: May 10, 1976Date of Patent: June 21, 1977Assignee: General Dynamics CorporationInventors: William H. Schaefer, Richard E. Bender
-
Patent number: 4030880Abstract: Synthetic polycarbonamide filaments having more uniform acid dyeability are prepared in a melt-spinning and drawing process by applying a dye leveling agent to the filaments in a spin finish prior to drawing. Dye uniformity is improved with washfast, rate-sensitive acid dyes. The filaments may be processed conventionally prior to dyeing. Effective agents include sodium dodecyldiphenylether disulfonate and sulfated butyl oleate.Type: GrantFiled: October 9, 1975Date of Patent: June 21, 1977Assignee: E. I. Du Pont de Nemours and CompanyInventors: Winfried Thomas Holfeld, Alfred John Strohmaier
-
Patent number: 4015039Abstract: The addition to filled thermoplastic resin systems of small amounts of fibrous material, of aspect ratio at least about 10 times the aspect ratio of the filler, facilitates dispersion and processing of these filled compositions into shaped articles and gives a product exhibiting superior surface properties.Type: GrantFiled: September 2, 1975Date of Patent: March 29, 1977Assignee: Allied Chemical CorporationInventors: Leon Segal, Albert H. Steinberg
-
Patent number: 4013750Abstract: A method for fabricating a conical seamless bra pad preform for subsequent molding into a finished pad. The material used is fiberfill or the like and a blank, cut from such a sheet, or from a sandwich of two sheets, and is indented by a conical member which has pins spaced over the surface of the cone for engaging the material. Variable thinning of the material is achieved by the action of the pins in engaging the material successively. A second embodiment involves a series of coaxial rings to grasp the blank. Non-uniform displacement of the ringsets causes the desired uneven stretching of the blank.Type: GrantFiled: June 9, 1975Date of Patent: March 22, 1977Assignee: Moldex/Metric, Inc.Inventors: Herbert Magidson, Otto L. Huber, Helmut Hennrich
-
Patent number: 4003773Abstract: A process for cutting a multi-filament tow into fibers of ultra-short length and narrow size distribution is provided. Initially, a multi-filament tow is passed through a bath of liquid impregnating material at elevated temperature. The impregnated tow is then passed through a die which is sized to control the quantity of material impregnating the tow and to compact the filaments of the tow into a closely packed bundle. The resulting tow is then cooled to solidify the impregnating material and to convert the tow to a rigid form. The rigid tow is then cut, yielding wafer-thin disks. The impregnating material is then stripped from the wafer-thin disks with a solvent followed by removal of the solvent, thereby yielding fibers of ultra-short length and narrow size distribution.Type: GrantFiled: March 2, 1976Date of Patent: January 18, 1977Assignee: Hercules IncorporatedInventor: Michael Anthony Grable
-
Patent number: 4000238Abstract: An apparatus and a method is disclosed for the production of synthetic filament yarns containing substantial portions of additives which retain or develop a stickiness under certain yarn spinning conditions. Such additives cause the individual filaments in the yarn to adhere to each other under hot, humid spinning conditions such as are countered more particularly in nylon spinning-steam conditioning. The apparatus disclosed is a convergence guide which brings the filaments together in the spinning column just prior to the steam conditioner, but in so converging the filaments, maintains the individual filaments in a spaced relationship to each other such that they remain separate from each other as they pass through a steam conditioner.Type: GrantFiled: November 1, 1973Date of Patent: December 28, 1976Assignee: Fiber Industries, Inc.Inventor: Charles Jay Maurer
-
Patent number: 4000237Abstract: The method of the invention consists of forming a web of substantially planar-aligned fibers, applying a surface disposition of bonding material to one side of the web to penetrate only part way through the web in order to form a first surface region having the surface bonding material and a central core region free from the surface bonding material and bounded on the side opposite the first surface region by a second surface region, applying a penetrating disposition of bonding material to one side of the web in a fine, spaced-apart pattern which occupies less area in the plane of the web than the surface bonding material in the first surface region and penetrates through the central core region to connect the first and second surface regions together, and creping the web to decrease the fiber concentration in the central core region to less than that in the first surface region.Type: GrantFiled: June 4, 1975Date of Patent: December 28, 1976Assignee: Scott Paper CompanyInventor: Clifford J. Roberts, Jr.
-
Patent number: 3997965Abstract: Apparatus is provided for shaping a generally elongate strip of lubricant wicking material and placing it into a component for a dynamoelectric machine. In this apparatus, means is provided for receiving the strip when it is introduced thereinto, and means associated with the receiving means is operable generally for moving the strip therefrom and converting the shape of the strip into a predetermined configuration. Means is provided for predeterminately locating the dynamoelectric machine component on the apparatus with respect to the moving and converting means, and means is operable for displacing the strip generally in its predetermined configuration from the moving and converting means into place within the dynamoelectric machine component.Type: GrantFiled: July 8, 1975Date of Patent: December 21, 1976Assignee: General Electric CompanyInventors: Paul R. Smoltich, James W. Wilson
-
Patent number: 3989789Abstract: A woven cloth of flexible material is masked to expose only longitudinal spaced stripes. A plastic polymer is applied to the exposed material. The striped cloth is draped over spaced supports that are transverse to the stripes. Depressors are applied to the cloth between the supports so that the cloth is substantially sinusoidal in crosssection. The cloth is cured to harden the stripes so that the cloth is still flexible in one direction but only slightly flexible in the other. The cloth is warped, bent or otherwise shaped as desired for application to it of laminar sheets of cloth, metal or wood, then the core and the laminates are joined, impregnated and cured to a rigid structure of desired configuration and high strength to weight ratio.Type: GrantFiled: March 3, 1975Date of Patent: November 2, 1976Assignee: DE Lorme Marketing CorporationInventor: Rex D. Brookhart
-
Patent number: 3975482Abstract: An improved process for drawing a continuous length of an acrylic multifilament fibrous material is provided. Prior to drawing at an elevated temperature by continuous passage through a suitable drawing zone the surface of the fibrous material is coated with powdered graphite (e.g. colloidal graphite) via contact with a dipersion containing the graphite paticles which serve to improve the drawing properties of the same. The process is suited for the hot drawing of a continuous length of an acrylic multifilament fibrous material (e.g. a substantially untwisted tow) which is intended for subsequent thermal stabilization, and cabonization to form a carbonaceous fibrous material.Type: GrantFiled: June 10, 1974Date of Patent: August 17, 1976Assignee: Celanese CorporationInventor: Richard N. Rulison
-
Patent number: 3966864Abstract: Filament-wound reinforced plastic articles and parts thereof are obtained by wetting and impregnating filaments, rovings, webs, and the like fibrous materials consisting of glass, carbon, graphite, boron, steel, asbestos, temperature resistant organic fibers, and the like with a liquid or liquefied polymerizable organic compound of a high melting point which can be polymerized by addition polymerization, and converting the wetted fibrous material into the desired wound plastic article or part thereof by winding around a mandrel and then subjecting the wound article to addition polymerization. Wetting and winding with the polymerizable organic compound are effected under conditions under which substantially no polymerization takes place. Especially suitable polymerizable organic compounds are bisimides such as the bismaleimides of a melting point which is at least 20.degree. C. below the temperature required for polymerization.Type: GrantFiled: April 8, 1975Date of Patent: June 29, 1976Assignee: Technochemie GmbH Verfahrenstechnik of HeidelbergInventor: Horst Stenzenberger
-
Patent number: 3956555Abstract: An elongated structural member formed of bonded directionally-oriented wood strands. The member is rectangular in cross section, having a width between longitudinal side edges and thickness between parallel longitudinal faces joining the side edges. Oriented wood strands are utilized to form the member, with flange sections extending inwardly from the side edges and a web section extending between the flanges. Strands within the flange sections are longitudinally oriented parallel to one another and to the face and edges of the member. Strands within the web section are skewed relative to the strands within the flanges. At the interfaces between the flange sections and web sections, strands are disposed with angular components complementary to strands found in both the flanges and web section. The rectangular configuration of the member facilitates its construction by conventional pressing equipment and techniques.Type: GrantFiled: September 23, 1974Date of Patent: May 11, 1976Assignee: Potlatch CorporationInventor: Herbert B. McKean
-
Patent number: 3947537Abstract: Battery separators are produced from nonwoven mats of thermoplastic fibers by wetting the fibers with a surfactant-water mixture to modify the surface properties of the fibers in the nonwoven mat, vaporizing the water while depositing the surfactant on the fibers, heating the nonwoven mat prior to compressing and then compressing to increase the fiber-to-fiber bonding as well as to form the desired structure. During compressing, ribs may be formed by using appropriate embossed rolls or press plate patterns. After the compressing step, slitting, cooling and cutting steps are carried out to produce a battery separator of the desired dimensions.Type: GrantFiled: July 20, 1973Date of Patent: March 30, 1976Assignee: Exxon Research & Engineering Co.Inventors: Robert R. Buntin, Walter A. Morgan
-
Patent number: 3940464Abstract: A method of producing fibre-reinforced thermoplastic materials in which a plurality of rovings are impregnated with a powdered thermoplastic, the thermoplastic is melted and each impregnated roving is consolidated by passing it through a die which includes the step of contacting all the rovings with a common pool of molten polymer.Type: GrantFiled: September 27, 1974Date of Patent: February 24, 1976Assignee: Imperial Chemical Industries LimitedInventors: John Howard Davis, deceased, Richard C. Harwood, executor, Barbara Davis, executrix