With Treatment Patents (Class 28/112)
-
Publication number: 20040116026Abstract: A resin charged media can be a single or layered construction needled together to provide a graded-density structure of fine fibers intermixed with finer fibers. This resulting media possesses a higher particulate loading retention capability, particularly early in the filtration cycle, relative to other cellulose, spun-bonds, or other similar materials commonly applied to filtration applications where filtration is predominantly a surface-loading phenomenon. The filtration media provides for depth filtration with the multi-layered needled layers, thereby enhancing the overall particulate-holding capacity of the charged media. This results in more resistance to fine particulates and improvements in efficiency due to increased sub-micron particle loading. With the filter media consisting of a graded structure, surface loading phenomenon can be reduced and filter life improved. Since the layers in the media are physically combined using needling technology, they will not separate.Type: ApplicationFiled: December 5, 2003Publication date: June 17, 2004Applicant: Filter Materials, Inc.Inventors: Don A. Kubose, Jin Young Choi, James T. Greene
-
Patent number: 6750166Abstract: Disclosed is a method for producing a non-woven fiber fabric comprising a plurality of perforated structures extending along the entire cross-section of said fabric. The inventive method consists of the following steps: in a first step, the matted fibers are placed on a belt screen to form a web of fibers; in a second step, the web of fibers is conveyed to a perforated-structure manufacturing unit, in a third step, the perforated structures are manufactured by mechanically impinging upon the fibers, whereby the mechanical impingement upon said fibers does not affect the mechanical and chemical structure thereof; and in a fourth step, the web of fibers provided with said perforated structures is compacted in a compaction unit for form a non-woven fabric.Type: GrantFiled: December 20, 2000Date of Patent: June 15, 2004Assignee: Corovin GmbHInventors: Stefan Etzold, Joachim Bauer
-
Patent number: 6726976Abstract: A concentrate of binder at the tufts produces a lighter and more flexible carpet, which allows for direct attachment of hook-and-loop means on the carpet backing. Thermoplastic binder yarns are pinned by the pile yarns against the primary backing. Subsequent application of heat melts the binder yarns and fuses the tufts and primary backing together. An alternate embodiment uses highly shrinkable binder sheet placed over the backing before tufting, instead of the binder yarns.Type: GrantFiled: May 29, 2002Date of Patent: April 27, 2004Assignee: E.I. du Pont de Nemours and CompanyInventor: Zafiroglu P. Dimitri
-
Patent number: 6642160Abstract: A loop material of a hook-and-loop fastener, comprised of a nonwoven base and a number of loops which are formed at least on one plane side of the nonwoven base. The nonwoven base is formed by accumulating a number of filaments or fibers. An antislipping agent is deposited at least on the surface of the loops, thereby the surface of the loops become uneven. Or, by deformation on the surface of the loops due to thermal plasticity, the surface of the loops become uneven. Due to this unevenness, projections of the hook material are difficult to get out of the loops and a hook-and-loop fastener having high joining strength is obtained.Type: GrantFiled: March 5, 1998Date of Patent: November 4, 2003Assignee: Unitika Ltd.Inventor: Tohru Takahashi
-
Patent number: 6634069Abstract: In an apparatus for feeding a fiber fleece web to a needling machine, a compacting means is arranged between a pre-compressor and a supply roller pair, said compacting means having rollers provided with teeth at their circumference. These rollers compress the fiber fleece and effect a partial re-orientation of the fibers from the horizontal into the vertical, which contributes to substantially maintaining the compacting of the fiber fleece. The compacting means may together with the supply roller pair form a drawing zone for the fiber fleece web. The compacting means preferably includes at least one roller triple that consists of two lower rollers arranged at a low mutual distance in juxtaposition, and upper rollers bridging over the gusset between the lower rollers. The rollers of the roller triple are provided on their periphery with all-steel armaments, and the supply rollers are preferably also provided with all-steel armaments and have higher speeds of rotation than the rollers of the roller triple.Type: GrantFiled: September 24, 2002Date of Patent: October 21, 2003Assignee: Oskar Dilo Maschinenfabrik KGInventors: Johann Philipp Dilo, Eugen Gutsche
-
Patent number: 6579396Abstract: A durable, low-density, high performance insulating material is suitable for use as a high temperature thermal and acoustic insulation. The insulation includes fiber batting made with non-thermoplastic fibers or blends of fibers such as aramid fibers and ceramic fibers, which are bound within at least some interstices by high temperature non-flammable thermoplastic binder such as polyphenylene sulfide. In addition, a fireblocking layer can be provided on at least one surface of the insulation to further improve fire ablation or flame retardance.Type: GrantFiled: March 8, 2002Date of Patent: June 17, 2003Assignee: Tex Tech Industries, Inc.Inventor: David F. Erb, Jr.
-
Publication number: 20030056348Abstract: In an apparatus for feeding a fiber fleece web to a needling machine, a compacting means is arranged between a pre-compressor and a supply roller pair, said compacting means having rollers provided with teeth at their circumference. These rollers compress the fiber fleece and effect a partial re-orientation of the fibers from the horizontal into the vertical, which contributes to substantially maintaining the compacting of the fiber fleece. The compacting means may together with the supply roller pair form a drawing zone for the fiber fleece web. The compacting means preferably includes at least one roller triple that consists of two lower rollers arranged at a low mutual distance in juxtaposition, and upper rollers bridging over the gusset between the lower rollers. The rollers of the roller triple are provided on their periphery with all-steel armaments, and the supply rollers are preferably also provided with all-steel armaments and have higher speeds of rotation than the rollers of the roller triple.Type: ApplicationFiled: September 24, 2002Publication date: March 27, 2003Inventors: Johann Philipp Dilo, Eugen Gutsche
-
Patent number: 6440341Abstract: A rug underlay comprising a fiber batting needle-punched to a core thickness of 0.25 to 0.5 inch with one side being flame-treated to produce a surface of matted melted fibers with random stiff spikes of fiber projecting upwardly therefrom; and the other side being coated with a rubber material. The process for making same includes passing the core beneath burners about 4-8 inches therebelow and the burners produce about 20,000 BTU's /hour/foot of burn length measured transversely of the core.Type: GrantFiled: October 7, 1999Date of Patent: August 27, 2002Inventor: Charles S. Mussallem, III
-
Structure textile material made of at least two base nonwoven fabrics and method for its manufacture
Publication number: 20020029445Abstract: The invention relates to a structured textile material made of at least two different, needled base nonwoven fabrics. The base nonwoven fabrics have a structure obtained by needling from at least one side. The needles used for the structure needling are fork needles or crown needles, and the depth of the forks and barbs, respectively, is so selected that, when piercing through, they completely fill up with fibers of the base nonwoven fabric facing the needles. The textile material have unmixed, pure fibers in the pattern, in the background and on the reverse side.Type: ApplicationFiled: July 19, 2001Publication date: March 14, 2002Inventors: Karlheinz Stein, Heinrich Laun, Michel Passler -
Publication number: 20010005926Abstract: The invention concerns a method which consists in continuously: producing by carding (1) a web (10 from chemical fibers; subjecting the resulting web (1) to a hydro-entanglement using water jets, treatment which consists in: (a) consolidating the web (10) by the action of a first series of water jets (3), the web (10) being supported by a drum (4) comprising micro-perforations; (b) subjecting the consolidated web (10) to structuring, by the action of one or several series of water jets (12); depositing on the surface of the resulting structured lap (10a) natural fibers (14) by pneumatic layering (6); subjecting the resulting complex (20) to the action of another series of water jets (7) acting on the surface covered with natural fibers.Type: ApplicationFiled: January 9, 2001Publication date: July 5, 2001Inventor: Frederic Noelle
-
Patent number: 6207601Abstract: The disclosure relates to a melt-blown non-woven fabric based on cellulose esters, with fibers of mean diameter less than about 10 microns. The fabric contains 0-10 wt. % extractable softener, has a reflection factor determined according to DIN 53 145 Part I (1992) of more than 60% and the cellulose ester has a degree of substitution DS of about 1.5-3.0. The softener is preferably water-extractable. A melt-blown non-woven fabric is produced with the cellulose ester as follows: a cellulose ester, cellulose acetate, with a DS of about 1.5-3.0, in particular 1.7-2.7, is mixed with softener in a weight ratio of about 2:1 to 1:4 and simultaneously heated and melted. The mixture of softener and cellulose ester has a melting index MFI (210/2.16) according to DIN 53 735 of about 400 to 5 g/10 min., in particular 300 to 50 g/10 min. The melt is worked in a melt-blown spinning device into a melt-blown non-woven fabric and the softener is then extracted with a softener solvent to leave a proportion of 0-10 wt. %.Type: GrantFiled: May 18, 1998Date of Patent: March 27, 2001Assignee: Rhodia Acetow AGInventors: Gunter Maurer, Paul Rustemeyer, Eberhard Teufel
-
Patent number: 6159880Abstract: A felt provides a uniform paper-supporting surface having good water storage and water release properties. These qualities are effected by a bat including one or more layers of fine fibers being needled onto a base containing perforations and cavities. The free surfaces of the bat fibers needled into the cavities are reduced in a special production step following the needling operation.Type: GrantFiled: June 15, 1998Date of Patent: December 12, 2000Inventor: Christian Schiel
-
Patent number: 6151763Abstract: Dual glass fibers can be processed into coherent webs and felts by first blending the dual glass fibers with an equal or greater amount of uncrimped fibers. Optionally, other crimped fibers can be added without significant impact on processibility.Type: GrantFiled: October 7, 1999Date of Patent: November 28, 2000Assignee: E. I. du Pont de Nemours and CompanyInventor: Reginald Thomas Kruszewski
-
Patent number: 6024818Abstract: A method for manufacturing a rigid fiber composite material and the product thereof created by needling a composite of a non-woven blend of first fibers with a initial melting point with one or more other fibers with higher melting points that are interposed between two interentangled non-woven layers of the first fibers and then heating this composite to a level above the melting point of the first fibers forming a plasticized structure.Type: GrantFiled: December 21, 1992Date of Patent: February 15, 2000Inventors: Samuel Eugene Dunson, Stafford Reade Brooke, III
-
Patent number: 5789328Abstract: The object of the present invention is to provide a nonwoven fabric which is excellent in bulkiness and touch feeling as well as strength and dimensional stability and to provide a method for producing the above nonwoven fabric through a simple and convenient manner without employing any particular spinning device. The invention relates to a bulky nonwoven fabric composed of a stretched filament web which is prepared from either at least one layer of a stretched unidirectionally arranged filament web which is composed of almost unidirectionally arranged long fibers being stretched and shrunk or a stretched crosswise laminated filament web made of two or more layers of the stretched unidirectionally arranged filament webs and a short fiber web which is entangled with said stretched filament web and is crimped as a result of shrinkage of the long fibers, and a method for producing the same.Type: GrantFiled: June 18, 1997Date of Patent: August 4, 1998Assignees: Nippon Petrochemicals Company, Limited, Polymer Processing Research Inst., Ltd.Inventors: Kazuhiko Kurihara, Hiroshi Yazawa, Sadayuki Ishiyama, Jun Yamada
-
Patent number: 5780369Abstract: A saturated hydroentangled fibrous web which includes fibers and a saturant. The fibers include from about 20 to 100 percent by weight, based on the total weight of the fibers, of cellulosic fibers, and from 0 to about 70 percent by weight, based on the total weight of the fibers, of mercerized cellulosic fibers. From about 80 to 0 percent by weight of the fibers, based on the total weight of the fibers, are synthetic polymer fibers. Finally, at least 10 percent by weight of the fibers are mercerized cellulosic fibers, synthetic polymer fibers, or a mixture thereof. The saturant is present in the saturated fibrous web at a level of from about 25 to about 100 percent, based on the dry weight of the fibers. When synthetic polymer fibers are present in the web, the saturant may be adapted to wet synthetic polymer fibers. A second layer composed of a bonded nonwoven web may be present. Also provided is a method of preparing the saturated hydroentangled fibrous web.Type: GrantFiled: June 30, 1997Date of Patent: July 14, 1998Assignee: Kimberly-Clark Worldwide, Inc.Inventors: John Patrick Allison, Russell Lynn Dolsey
-
Patent number: 5707906Abstract: Method to produce a nonwoven needled fabric in which the needled fabric includes 15-30% of low melt nylon 6 and nylon 12 fusible fibers to aid in holding the nonwoven fabric together when passed through an oven to melt the fusible fibers and then allow them to cool and bind the fabric together.Type: GrantFiled: February 10, 1992Date of Patent: January 13, 1998Assignee: Milliken Research CompanyInventor: Paul William Eschenbach
-
Patent number: 5671518Abstract: In order to be able to consolidate mineral fibers without binder, such as in particular glass wool into a needle-felt by needle-punching, an agent as a needling aid which comprises a thixotropizing additive having a relatively low flow viscosity during needling and thus allows to effectively support the needling process, is added to the mineral fibers. At rest, this thixotropizing additive however has an extremely high viscosity, whereby the needle-punched felt obtains good strength. In particular, for needling rock wool, suppler textile fibers are moreover added which contribute to improved mutual interlocking of the fibers, in particular in the case of mineral fibers such as basalt fibers, which can only with difficulty be interlocked by needling.Type: GrantFiled: October 15, 1993Date of Patent: September 30, 1997Assignee: Isover Saint-GobainInventors: Hans Kummermehr, Lothar Bihy, Reinhard Stoyke
-
Patent number: 5660911Abstract: A tufted carpet is described in which the tufting yarns (2) are tufted into a tufting backing (1) and firmly joined to it. The back side (1a) of the tufted carpet (1) has a layer (5) comprising pieces of thermoplastic plastic sheet material joined together under the influence of pressure and temperature. Back ends (2a) of the tufting yarns (2) are firmly bound into the layer (5).Type: GrantFiled: July 28, 1995Date of Patent: August 26, 1997Inventor: Gunter Tesch
-
Patent number: 5616395Abstract: A process for the production of a two-layer textile reinforcement for the production of bituminous sealing sheets for roofing consists first, from a first layer based on nonwoven cloth, in consolidating this nonwoven cloth by mechanical or hydraulic bonding and in thermostabilizing it. This first consolidated and thermostabilized layer is then assembled with a second mineral fiber layer, either by counter-gluing, or by needling, or by seam knitting. These two latter assembly methods are used only when the second mineral fiber layer is in the form of a grid or cloth of continuous or discontinuous mineral filaments. The first assembly method by counter-gluing is itself used no matter what the structure of the second mineral filament layer, whether it be in the form of a grid or a cloth of continuous or discontinuous mineral fibers or in the form of a scrim of mineral fibers.Type: GrantFiled: February 9, 1995Date of Patent: April 1, 1997Assignee: Freudenberg Spunweb S.A.Inventors: Jean Baravian, Ulrich Jahn, Robert Groten, Jean-Jacques Beck
-
Patent number: 5573841Abstract: Disclosed is a hydraulically entangled, autogenous-bonding, nonwoven composite fabric composed of a matrix of substantially continuous, thermoplastic polymer filaments and at least one substantially non-thermoplastic fibrous material integrated in the matrix so that the composite fabric is adapted to autogenously bond to itself upon application of heat. The hydraulically entangled, autogenous-bonding, nonwoven composite fabric may be suitable as infusion package material for applications such as, for example, tea bags and coffee filter pouches. Also disclosed is a method of making a hydraulically entangled, autogenous-bonding, nonwoven composite fabric.Type: GrantFiled: April 4, 1994Date of Patent: November 12, 1996Assignee: Kimberly-Clark CorporationInventors: Gabriel H. Adam, James D. Cotton, Donald F. Durocher, Richard M. Peterson
-
Patent number: 5566434Abstract: An air bag of the type utilized in a vehicle occupant restraint system is constructed of a plurality of panels of uncoated fabric. Respective of the panels have been processed to achieve a selected air permeability with greater accuracy on a lot-to-lot basis than had generally been achieved with uncoated fabrics of the prior art. In one presently preferred methodology, the panels are first calendered under selected temperature and pressure conditions such that a low reference permeability is achieved. Next, respective of the panels may be needled such that the permeability is raised from the low reference permeability to a selected permeability level. Alternatively, a plurality of fluid jets, preferably water jets, may be utilized to impact panels of the uncoated fabric under selected operating conditions. Pores created by the fluid jets may be heat set to achieve a selected permeability.Type: GrantFiled: June 15, 1994Date of Patent: October 22, 1996Assignee: JPS Automotive Products CorporationInventor: Alonzo W. Beasley
-
Patent number: 5547731Abstract: A process for producing a needled multilayered carpet is described in which an intermediate layer (6) containing thermoplastic film material is arranged between a layer of backing (5) and a top layer (7). The three layers are bonded together into a carpet by means of a process of needling through fibers (9). The intermediate layer (6) is formed by lumpy, three-dimensional plastic film material (8), and the needled fibers are tightly integrated into the intermediate layer (6) by the influence of temperature.Type: GrantFiled: January 25, 1994Date of Patent: August 20, 1996Inventor: Gunter Tesch
-
Patent number: 5503893Abstract: Method of fabricating a multi-ply carbon fibre fabric, preform or composite material from a layer of unidirectionally aligned carbon fibres of ultra-high modulus and a layer of low modulus carbon fibre comprising the steps of: arranging in superimposed relationship the layer of unidirectionally aligned carbon fibres of ultra-high modulus and the layer of low modulus carbon fibres so that at least a substantial number of the fibres of low modulus are disposed transversely of the fibres of the ultra-high modulus fibre layer, and connecting the two layers by interlacing fibres of the layer of low modulus fibres with those of the layer of ultra-high modulus fibres by needle-punching using felting needles orientated and configured so that their barbs snag only the low modulus fibres during passage through the layers.Type: GrantFiled: May 18, 1994Date of Patent: April 2, 1996Assignee: Dunlop LimitedInventors: Maurice J. Evans, Ronald Fisher, Keith A. Williams
-
Patent number: 5475903Abstract: A composite nonwoven fabric and method for making the same includes subjecting a carded web to the action of a cross lapper (B) and then drafting the cross-lapped web by passing the same through a web drafter (C) utilizing a series of wire wound rolls of progressively increased speed. A web of substantially unbonded polymeric fibers is layed from a roll (D) forming a composite web by hydroentanglement utilizing a series of spun bonding steps resulting in a composite web of substantial strength comparison in the machine direction and in cross direction and possessing the characteristics of fabric suitable for use in hospital applications such as surgical gowns.Type: GrantFiled: September 19, 1994Date of Patent: December 19, 1995Assignee: American Nonwovens CorporationInventor: Loren M. Collins
-
Patent number: 5458944Abstract: Tufted carpets which are conformable and stretchable make use of a stretchable carpet backing formed from a composite fabric. The stretchable carpet backing fabric is formed of a stretchable elastic net and at least one nonwoven fibrous layer overlying the stretchable elastic net. The fibers of the fibrous layer extend through said elastic net to mechanically secure the fibrous layer to the elastic net and form a unitary coherent elastic fabric.Type: GrantFiled: April 15, 1994Date of Patent: October 17, 1995Assignee: Fiberweb North America, Inc.Inventor: Jared A. Austin
-
Patent number: 5458960Abstract: Flexible base web of a construction covering comprises a main layer extending at least over the greatest part of the thickness of the web and is constituted of a non-woven mineral fiber mat containing predominantly discontinuous mineral fibers. Said mat contains further blend fibers. The mat is manufactured using a dry method by means of an air stream whereby said blend fibers have become blended inside the mat during the dry method forming of the mat. The portion of said blend fibers is greater in the proximity of one of the surfaces of the mat than in the middle due to subsequent needling of the mat.Type: GrantFiled: February 9, 1993Date of Patent: October 17, 1995Assignee: Roctex Oy ABInventors: Jorma Nieminen, Jean Le Bell, Ulf Westerlund, Erkki Narhi
-
Patent number: 5454142Abstract: A needlepunch fabric of staple polyester fibers is disclosed that is elastomeric and has foam-like compressibility and resilience. The polyester staple is formed of fibers having a differential birefringence. Mechanically crimped fibers are carded, crosslapped, and needlepunched to from about 150 to 1500 ppsi, and the resultant fabric is heated to from about 120.degree. to 240.degree. C. to induce a latent crimp in the fabric and to develop the elastomeric and foam-like properties of the fabric.Type: GrantFiled: December 31, 1992Date of Patent: October 3, 1995Assignee: Hoechst Celanese CorporationInventors: William G. Neely, Jr., Hung M. Nguyen
-
Patent number: 5428877Abstract: A method is provided for the continuous production of sealing sheeting impervious to water and/or oil, in the case of which between a substrate layer and a non-woven material covering layer a swellable clay is needle punched in position, a swellable clay additionally strewn on the top side of the covering layer being at the same time incorporated in the covering layer. After this the swellable clay present in the covering is moistened and dried again. In accordance with a modified form of the invention use is only made of a substrate consisting of a non-woven material, a woven fabric, a knitted fabric and/or a film, the film being a synthetic resin film, a synthetic resin film reinforced with fabric or paper, and a large pored non-woven material or a non-consolidated intersecting fiber crimped non-woven material or a random fiber non-woven material on which the pulverulent swellable clay is strewn, incorporated by needle punching, moistened and dried.Type: GrantFiled: March 17, 1993Date of Patent: July 4, 1995Assignee: Naue-Fasertechnik GmbH & Co. KGInventor: Georg Heerten
-
Patent number: 5405650Abstract: A method for manufacturing a non-woven fabric printed with a decorative pattern. A fibrous starting material whose individual fibers are capable of movement relatively to one another under the influence of applied fluid forces is subjected to a fluid stream for entangling the fibers to form a unitary fibrous network. The unitary fibrous network is impregnated with liquid binder which solidifies and consolidates the non-woven fabric. Before the binder has cured and is still in a liquid condition, the unitary fibrous network is printed with a decorative pattern. Subsequently, the unitary fibrous network is dried to simultaneously cure the binder and the colorant forming the decorative pattern.Type: GrantFiled: June 22, 1994Date of Patent: April 11, 1995Assignee: Johnson & Johnson Inc.Inventors: Roger Boulanger, Flavio Metta, Real Contant
-
Patent number: 5392500Abstract: A process for the manufacture of a fibrous texture for producing a composite material article. The fibrous texture is formed of a yarn comprising discontinuous fibers which are made of a refractory material or a precursor thereof. The discontinuous fibers are disposed parallel to one another, without twist. A covering yarn made of a fugitive material is disposed over the discontinuous fibers to provide integrity to the yarn. The covering yarn is eliminated after formation of the fibrous texture.Type: GrantFiled: February 4, 1993Date of Patent: February 28, 1995Assignee: Societe Europeenne de PropulsionInventors: Pierre Olry, Dominique Coupe, Philippe DuPont
-
Patent number: 5380582Abstract: A non-woven recyclable polyester fabric suitable for use as a bale covering that is a single layer batt formed of crosslapped fiber having a structure compacted by needlepunching and calendering. A process for producing this non-woven recyclable polyester fabric that includes forming a web of fiber, crosslapping the web to form a batt, needlepunching the batt, and calendering the batt under suitable conditions.Type: GrantFiled: December 28, 1992Date of Patent: January 10, 1995Assignee: Hoechst Celanese CorporationInventors: William G. Neely, Jr., Gordon Oran
-
Patent number: 5371928Abstract: Apparatus for feeding a fiber batt to a needle loom, in which a gusset gap between an upper reversing roller of a pre-compression means and an upper supply roller is filled by an upper slim transmission roller rotatably suspended at its end portions by bracket means. The transmission roller is made from a carbon fiber reinforced resin material. The bracket means are composed each of two parts which may be released from each other. One part of each bracket means is mounted on the axis of the supply roller, whereas the other part is suspended in a stationary frame of the apparatus. By realeasing the parts of each other, an easy disassembly of the supply roller is enabled.Type: GrantFiled: August 24, 1993Date of Patent: December 13, 1994Assignee: Oskar Dilo Maschinenfabrik KGInventor: Johann P. Dilo
-
Patent number: 5346565Abstract: A multi-layer article of manufacture includes an intermediate layer of a water-swellable colloidal clay, such as bentonite, sandwiched between two layers of flexible sheet or fabric material wherein the two flexible layers of sheet or fabric material are structurally interconnected through the intermediate clay layer, such as by needle punching, after lubrication of the clay with a liquid, such as water, to interconnect fibers of one fabric layer to the other fabric layer at spaced locations over essentially the entire inner surface areas of both sheet or fabric material layers.Type: GrantFiled: December 4, 1992Date of Patent: September 13, 1994Assignee: American Colloid CompanyInventor: Alec W. White
-
Patent number: 5325571Abstract: A method for producing a shaped non-woven comprises the steps of feeding fibers on a carding machine over a limited width, superposing on a receiving system the fibrous web leaving the carding machine and needling the superposed layers. The superposition is preferably obtained by winding over a cylindrical drain.The shaped non-woven obtained has a thickness gradually decreasing towards its selvedges. The obtained strip has a cross-section of an asymmetrical shape by longitudinal cutting along the median axis and optionally two longitudinal cuttings on the selvedge side.Type: GrantFiled: July 6, 1992Date of Patent: July 5, 1994Assignee: Centre Technique Industriel dit: Institut Textile de FranceInventor: Robert M. Bolliand
-
Patent number: 5284704Abstract: Fibers comprising 10 to 100% of bicomponent fibers, composed of a core polymer covered by a sheath polymer, are heated to a temperature between the softening point and the melting point of the sheath polymer for 5 seconds to 5 minutes at a pressure of 0 to 2000 psi until the fibers are bonded together. The products are used for drive belts and seals, nib felts for marking pens, filter cloths for plate and frame filters, filtration cartridges, stamp pad ink reservoirs, and battery separators.Type: GrantFiled: January 15, 1992Date of Patent: February 8, 1994Assignee: American Felt & Filter CompanyInventors: Francis F. Kochesky, Bryan F. Paschall
-
Patent number: 5283113Abstract: There is disclosed a process for continuously producing a pitch-based carbon fiber felt which comprises the steps of spinning a pitch by melt blow spinning system; accumulating the spun fibers as a pitch fiber web composed of the aggregate of short fibers; continuously cross lapping the web; subsequently stabilizing the cross lapped web; carbonizing and/or activating the stabilized web; and then felting the resultant web. The above-mentioned process is capable of efficiently producing a pitch-based carbon fiber felt having uniform unit weight and excellent physical properties and well suited for use in high-performance thermal insulator, cushioning thermal insulator, filter media and adsorbent for water purification and solvent recovery, etc.Type: GrantFiled: October 16, 1992Date of Patent: February 1, 1994Assignee: Petoca, Ltd.Inventors: Yoshiyuki Nishimura, Mikio Watanabe, Kazuo Jonouchi
-
Patent number: 5237945Abstract: A method of manufacturing a water barrier fabric, in flexible or rigid form, and article manufactured thereby, formed by dispersing a water-absorbent material, in powdered or granular form, among a mass of fibers during the formation of a loose mat of said fibers, to homogeneously disperse the powdered or granular water-absorbent material above, below and on each side of the fibers forming the mat, and thereafter densifying and structurally consolidating the mat, to secure the fibers in position surrounding and entrapping the water-absorbent material, such as by sewing, quilting, needle punching or otherwise bonding the fibers into a consolidated, structurally secure fabric at least partially filled with the powdered or granular water-absorbent material.Type: GrantFiled: April 2, 1991Date of Patent: August 24, 1993Assignee: American Colloid CompanyInventor: Alec W. White
-
Patent number: 5228175Abstract: A fibrous preform is formed from a yarn composed of long discontinuous fibers made of a refractory material or its precursor. The discontinuous fibers are disposed parallel to one another without twist, and the integrity of the yarn is achieved by a covering yarn made of a fugitive material. The fibrous preform is intended to be densified by a matrix material for the manufacture of a composite material article. The covering yarn is eliminated before the preform is densified by the matrix material.Type: GrantFiled: December 2, 1991Date of Patent: July 20, 1993Assignee: Societe Europeenne De PropulsionInventors: Pierre Olry, Dominique Coupe
-
Patent number: 5229184Abstract: This invention relates to a composition of matter having a fibre structure incorporating a major proportion of heat shrinkable fibres, the structure includes within it discreet fibre groupings which serve to provide structural elements within the composition. The composition of the invention is capable of being formed to provide shaped products. A particular aspect of the invention relates to compositions comprising flame retardant fibres typically polyimide fibres which enables the production of flame retardent compositions. The density of the structures can be controlled as can the rigidity thereof.Type: GrantFiled: February 24, 1989Date of Patent: July 20, 1993Assignee: Albany International CorporationInventors: Frederick S. Campbell, Gordon J. Varney, DeWitt R. Petterson
-
Patent number: 5216790Abstract: Method to produce a non-woven needled fabric in which the needled fabric includes 10-35% of low melt fusible fibers to aid in holding the non-woven fabric together when passed through and over to melt the fusible fibers and then allow to cool and bind the fabric together.Type: GrantFiled: August 12, 1992Date of Patent: June 8, 1993Assignee: Milliken Research CorporationInventor: Paul W. Eschenbach
-
Patent number: 5213735Abstract: Process for manufacturing needled spunbondeds from thermoplastic fibers wherein, prior to the needling, the as-spun web is thermally sealed at the surfaces and provided with a lubricant.Type: GrantFiled: June 24, 1991Date of Patent: May 25, 1993Assignee: Polyfelt Gesellschaft m.b.H.Inventors: Heinrich Schneider, Heinz Bocksrucker, Karl Muhlberghuber
-
Patent number: 5198294Abstract: An air-filtering material exchangeably attached to a home-use or automobile air filter comprises a water jet type nonwoven fabric at an air outlet side and another type nonwoven fabric or fiber assembly at an air inlet side. These nonwoven fabric sheets are laminated on one another by needle punching. The water jet type nonwoven fabric is made from crowded finer fiber staples, and bits formed therein by penetration of needles of a needle punching machine may be stopped up by centripetally moving fiber staples surrounding the bits.Type: GrantFiled: July 18, 1991Date of Patent: March 30, 1993Assignee: Dynic CorporationInventors: Takuichiro Masuda, Norio Umezu, Yutaka Saisho
-
Patent number: 5174231Abstract: A multi-layer article of manufacture includes an intermediate layer of a water-swellable colloidal clay, such as bentonite, sandwiched between two layers of flexible sheet or fabric material wherein the two flexible layers of sheet or fabric material are structurally interconnected through the intermediate clay layer, such as by needle punching, after lubrication of the clay with a liquid, such as water, to interconnect fibers of one fabric layer to the other fabric layer at spaced locations over essentially the entire inner surface areas of both sheet or fabric material layers.Type: GrantFiled: December 17, 1990Date of Patent: December 29, 1992Assignee: American Colloid CompanyInventor: Alec W. White
-
Patent number: 5156899Abstract: A fiber structure electrode plaque for accumulators made from a needle felt web made of synthetic fibers which, after activation, is chemically metallized, and galvanically reinforced by being metal-plated. The needle felt web has a weight per unit area of between 50 and 150 g/m.sup.2 with a porosity of from 60 to 96%, the synthetic fibers having a diameter of from 10 to 30 .mu.m, and the length of the staple fibers amounting to from 20 to 40 mm. Over its whole surface, the needle felt web is needled from both sides and has a nominal thickness of from 0.5 to 1.0 mm.Type: GrantFiled: February 1, 1991Date of Patent: October 20, 1992Assignee: Deutsche Automobilgesellschaft mbHInventors: Holger Kistrup, Otwin Imhof
-
Patent number: 5129131Abstract: In a method of and an apparatus for manufacturing a glass fiber mat, bundles of glass fibers shake down onto a conveyor unit arranged horizontally, to form a non-oriented fiber layer. The non-oriented fiber layer is dried by a drier. Bundles of uni-directional fibers are supplied onto the dried non-oriented fiber layer, by a bundle supply device, to laminate the uni-directional fiber layer onto the dried non-oriented fiber layer. At the laminating, the bundles of uni-directional fibers are guided in parallel relation to each other at regular intervals in a widthwise direction of the conveyor unit. The uni-directional and non-oriented fiber layers, which are laminated one upon the other, are supplied to a needler and are needled thereby, to form the glass fiber mat. The glass fiber mat is carried out by a delivery roller unit.Type: GrantFiled: November 26, 1990Date of Patent: July 14, 1992Assignee: Ube-Nitto Kasei Co., Ltd.Inventors: Hiroshi Kimura, Makoto Maeda, Toshiharu Hirai
-
Patent number: 5128117Abstract: In order to obtain a reinforcement texture made essentially of silicon compound based ceramic fibers in the production of a composite material, the fibers are spun from a ceramic precursor in the molten state, after which they are submitted to a partial cross-linking in view of making the fibers infusible. The cross-linking of the fibers in the precursor in the infusible state is continued and, while they are maintained in the organic state, the cross-linked fibers are submitted to one or several textile-forming operations, such as weaving, layering, needling . . . in order to arrive at the multidirectional texture. Then, the texture is submitted to a heat treatment by pyrolysis to induce the ceramic state of the fibers and so obtain the required texture, which is essentially made of ceramic fibers having a silicon compound base, in particular silicon carbide.Type: GrantFiled: October 3, 1989Date of Patent: July 7, 1992Assignee: Societe Europeenne de PropulsionInventors: Pierre Olry, Jacques Thebault
-
Patent number: 5112421Abstract: A soft and strong composite sheet for an artificial leather is provided by superimposing a fabric or woven or knitted construction and a non-woven fiber web, anchoring fibers of the non-woven fiber web with the fabric by needle punching to form a composite sheet and thereafter coating or impregnating the composite sheet with a binder solution. The fabric is constructed at least partly from high twist multifilament yarn and the non-woven fiber web is constructed from fibers having an average fiber length of at least 20 mm, the number of fibers being at least 10 fibers/cm.sup.2.Type: GrantFiled: April 7, 1989Date of Patent: May 12, 1992Assignee: Toray Industries, Inc.Inventors: Yuzuru Honda, Tateo Fujii, Koji Watanabe
-
Patent number: 5084332Abstract: A nonwoven fabric and a process for making a nonwoven fabric consisting essentially of:(a) forming a carded web of staple fibers selected from the group consisting of polypropylene fibers, cellulose acetate fibers, nylon fibers, acrylic fibers, and combinations of two or more thereof, having a denier in the range of from about 11/2 denier to about 10 denier;(b) crosslapping said carded web to for a suitable batt;(c) needling said batt with a needle punch density of from about 500 to about 2000 needle punches/square inch to form a fabric having a first smooth fabric surface and a second fabric surface opposite to said first surface;(d) fusing said second surface in a manner which provides a light fusion of the staple fibers making up said second surface;thereby providing a nonwoven fabric weighing in the range of from about 6 ounces/square yard to about 10 ounces/square yard with a thickness of from about 65 millimeters to about 90 millimeters.Type: GrantFiled: March 9, 1990Date of Patent: January 28, 1992Assignee: Phillips Petroleum CompanyInventor: Kenneth W. Burgess
-
Patent number: RE36756Abstract: Semifinished material consisting of symmetrically-needled glass-fiber mat impregnated with a thermoplastic polymer. The glass mat can be made by, for instance, needling continuous filament web from above and below at the same time with a double needling machine.Type: GrantFiled: December 29, 1995Date of Patent: June 27, 2000Assignee: BASF AktiengesellschaftInventors: Ludwig Wahl, Helmut Vogel