US3836422A - Antistatic fabrics - Google Patents

Antistatic fabrics Download PDF

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Publication number
US3836422A
US3836422A US00215356A US21535672A US3836422A US 3836422 A US3836422 A US 3836422A US 00215356 A US00215356 A US 00215356A US 21535672 A US21535672 A US 21535672A US 3836422 A US3836422 A US 3836422A
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United States
Prior art keywords
fiber
fibers
copper
fabrics
fabric
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Expired - Lifetime
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US00215356A
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English (en)
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D Bischoff
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Carl Freudenberg KG
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4234—Metal fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/4291—Olefin series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/4334—Polyamides
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/498—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/103—Metal fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/202—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2471/00—Floor coverings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/659—Including an additional nonwoven fabric
    • Y10T442/666—Mechanically interengaged by needling or impingement of fluid [e.g., gas or liquid stream, etc.]
    • Y10T442/667—Needled

Definitions

  • FIG. 3 -i-Ai-EP 3:;
  • the invention relates to the manufacture of a nonwoven fabric made from synthetic fibers, in which the electrostatic self-charging of these fibers is prevented.
  • the copper fibers can easily be processed with the others in a carding machine, so that the fiber mat that comes from the card contains the copper fibers uniformly distributed therethrough. This mat containing the copper fibers is then superimposed on the other layer which consists of the same thermoplastic fibers without the addition of copper. Then the two layers of matting are needled together, whereupon the copper fibers in the upper, first layer, which initially lie generally parallel to the plane of the table, are caught by the barbs of the needles and turned athwart their original direction. In this manner it is sought to pull a large number of copper fibers from the upper or tread surface of the needled structure to the lower surface or base.
  • FIG. 1 is a schematic sectional view through the individual fabrics
  • FIG. 2 is a schematic sectional view of the superposed fabrics prior to needling; and I FIG. 3 is a schematic sectional view showing the composite needled carpet.
  • FIG. 1 there are shown synthetic fiber mats l and 2, fiber mat 1 including copper fibers 3.
  • the two mats are superposed as shown in FIG. 2 and then needled.
  • many of the synthetic fibers, including most of the copper fibers, are projected downwardly at approximately 90 to the plane of the fabric in bunches 4 which impart mechanical stability to the structure.
  • a material such as shown in FIG. 3 is used as a carpet and comes in contact with a grounded floor, dissipation of the electricity is well assured. Since the copper fibers also provide a conductive path between the soles of the shoes of a person walking on the carpet and the grounded underlayment, the person himself is prevented from becoming electrically charged and getting an electric shock upon contacting windowframes, doorknobs etc. The effect is improved further by the use of conductive soles.
  • the needled, copper fibercontaining, non-woven fabrics in accordance with FIG. 3 can be impregnated with binding agents to further improve mechanical strength and resistance to wear. Copper fibers have a toughness and elasticity similar to synthetic fibers, and therefore it is possible to card and needle them without causing breakage of the fibers.
  • the invention is especially suited for carpets made up of synthetic thermoplastic fibers such as polyolefins, polyester and nylon.
  • the content of copper fiber may vary but generally ranges from about 0.5 to 5 percent by weight of the total fiber content of the carpet.
  • the concentration of the copper fibers adjacent the tread surface of the carpet is higher than at the base, e.g. preferably at least double, and this is desirable since it means there will be more contact between copper fibers and the soles of the shoes of a person walking thereon. Then the flow path of electricity will spread throughout the fabric to be leaked to the ground through many copper fibers, even though much further spaced from one another, due to the network of copper fiber through the whole structure.
  • the synthetic fibers may be of any standard length e.g. about 40 up to mm or more, and they are generally crimped or otherwise textured. In denier they generally range from about 6 or less up to 70 or more, preferably from about 12 to 40.
  • the copper fibers may vary similarly in length and denier.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Carpets (AREA)
US00215356A 1971-01-16 1972-01-04 Antistatic fabrics Expired - Lifetime US3836422A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712102087 DE2102087B2 (de) 1971-01-16 1971-01-16 Nadelvliesteppichbodenmaterial mit antistatischen eigenschaften

Publications (1)

Publication Number Publication Date
US3836422A true US3836422A (en) 1974-09-17

Family

ID=5796151

Family Applications (1)

Application Number Title Priority Date Filing Date
US00215356A Expired - Lifetime US3836422A (en) 1971-01-16 1972-01-04 Antistatic fabrics

Country Status (4)

Country Link
US (1) US3836422A (enrdf_load_stackoverflow)
DE (1) DE2102087B2 (enrdf_load_stackoverflow)
GB (1) GB1328601A (enrdf_load_stackoverflow)
NL (1) NL7200148A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900624A (en) * 1971-10-06 1975-08-19 Walter G Schare Static charge resistant synthetic yarns
DE2838881A1 (de) * 1977-09-06 1979-03-22 Standard Oil Co Leitendes sekundaergrundgewebe und damit hergestellte tufted-teppiche
US4197100A (en) * 1976-06-14 1980-04-08 Hausheer Hans P Filtering member for filters
US4689098A (en) * 1985-10-11 1987-08-25 Phillips Petroleum Company Molding composition
DE3724327A1 (de) * 1987-07-22 1989-02-09 Lohmann Gmbh & Co Kg Schuhinnensohle, insbesondere zwischen- oder brandsohle
US6502289B1 (en) * 1999-08-04 2003-01-07 Global Material Technologies, Inc. Composite nonwoven fabric and method for making same
US20200069250A1 (en) * 2017-03-10 2020-03-05 Myant Inc. Method of forming a three-dimensional conductive knit patch

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566437B1 (fr) * 1984-06-26 1986-12-26 Lnt Tissu composite deformable et extensible dans toutes les directions, incluant des elements metalliques
DE3625473A1 (de) * 1986-07-28 1988-02-11 Lentia Gmbh Bodenformteil fuer kraftfahrzeuge
DE9115657U1 (de) * 1991-12-18 1992-02-20 Amoco Fabrics Zweigniederlassung Der Amoco Deutschland Gmbh, 48599 Gronau Textiler Fußbodenbelag
EP0561064A1 (en) * 1992-03-20 1993-09-22 Lantor B.V. Conducting reinforced plastics
DE19956320A1 (de) * 1999-11-23 2001-06-13 Wolfgang Sannwald Textiles Flächengebilde mit einem elektrisch leitfähigen Vlies sowie Verwendung eines derartigen textilen Flächengebildes

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2373033A (en) * 1940-04-25 1945-04-03 Burkart Mfg Company F Smooth surface fibrous article
US3415713A (en) * 1965-04-19 1968-12-10 Fiberwoven Corp Non-woven fabric structure and method of making same
US3511740A (en) * 1964-09-08 1970-05-12 British Nylon Spinners Ltd Tufted fabrics and methods of making them
US3582445A (en) * 1967-11-18 1971-06-01 Teijin Ltd Carpet having durable antistatic properties
US3582448A (en) * 1968-04-23 1971-06-01 Teijin Ltd Garments having durable antistatic properties
US3669819A (en) * 1969-05-07 1972-06-13 Freudenberg Carl Carpet material
US3690057A (en) * 1970-01-22 1972-09-12 Bigelow Sanford Inc Anti-static yarn and fabrics
US3713960A (en) * 1968-10-04 1973-01-30 W Cochran Antistatic tufted product

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2373033A (en) * 1940-04-25 1945-04-03 Burkart Mfg Company F Smooth surface fibrous article
US3511740A (en) * 1964-09-08 1970-05-12 British Nylon Spinners Ltd Tufted fabrics and methods of making them
US3415713A (en) * 1965-04-19 1968-12-10 Fiberwoven Corp Non-woven fabric structure and method of making same
US3582445A (en) * 1967-11-18 1971-06-01 Teijin Ltd Carpet having durable antistatic properties
US3582448A (en) * 1968-04-23 1971-06-01 Teijin Ltd Garments having durable antistatic properties
US3713960A (en) * 1968-10-04 1973-01-30 W Cochran Antistatic tufted product
US3669819A (en) * 1969-05-07 1972-06-13 Freudenberg Carl Carpet material
US3690057A (en) * 1970-01-22 1972-09-12 Bigelow Sanford Inc Anti-static yarn and fabrics

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900624A (en) * 1971-10-06 1975-08-19 Walter G Schare Static charge resistant synthetic yarns
US4197100A (en) * 1976-06-14 1980-04-08 Hausheer Hans P Filtering member for filters
DE2838881A1 (de) * 1977-09-06 1979-03-22 Standard Oil Co Leitendes sekundaergrundgewebe und damit hergestellte tufted-teppiche
US4689098A (en) * 1985-10-11 1987-08-25 Phillips Petroleum Company Molding composition
DE3724327A1 (de) * 1987-07-22 1989-02-09 Lohmann Gmbh & Co Kg Schuhinnensohle, insbesondere zwischen- oder brandsohle
US6502289B1 (en) * 1999-08-04 2003-01-07 Global Material Technologies, Inc. Composite nonwoven fabric and method for making same
US20200069250A1 (en) * 2017-03-10 2020-03-05 Myant Inc. Method of forming a three-dimensional conductive knit patch

Also Published As

Publication number Publication date
GB1328601A (en) 1973-08-30
NL7200148A (enrdf_load_stackoverflow) 1972-07-18
DE2102087B2 (de) 1977-03-17
DE2102087A1 (de) 1972-07-27

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