US3574908A - Production of a nonwoven fleece of continuous filaments - Google Patents

Production of a nonwoven fleece of continuous filaments Download PDF

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Publication number
US3574908A
US3574908A US3574908DA US3574908A US 3574908 A US3574908 A US 3574908A US 3574908D A US3574908D A US 3574908DA US 3574908 A US3574908 A US 3574908A
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United States
Prior art keywords
filaments
yarn
percent
elongation
denier
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Expired - Lifetime
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English (en)
Inventor
Helmut Werner
Hans Stapp
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Glanzstoff AG
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Glanzstoff AG
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Publication date
Priority claimed from DEG38682U external-priority patent/DE1982562U/de
Priority claimed from DEG38686U external-priority patent/DE1982430U/de
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Publication of US3574908A publication Critical patent/US3574908A/en
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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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • 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
    • B32B5/12—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 the relative arrangement of fibres or filaments of different layers, e.g. the fibres or filaments being parallel or perpendicular to each other
    • 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
    • B32B2262/0276—Polyester fibres
    • B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2922—Nonlinear [e.g., crimped, coiled, etc.]
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2922—Nonlinear [e.g., crimped, coiled, etc.]
    • Y10T428/2925—Helical or coiled
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/2964—Artificial fiber or filament
    • Y10T428/2967—Synthetic resin or polymer
    • Y10T428/2969—Polyamide, polyimide or polyester
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2973—Particular cross section
    • Y10T428/2975—Tubular or cellular
    • 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]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/627—Strand or fiber material is specified as non-linear [e.g., crimped, coiled, etc.]

Definitions

  • Shurtleff ABSTRACT Process for the production of a nonwoven fleece from continuous filaments of a spun and stretched polymer yarn, especially a yarn composed of continuous hollow tubular.
  • polyethylene terephthalate filaments wherein the yarn having permanently crimped filaments with an individual denier of about 0.5 to 20 denier is subjected to a temporary elongation within the range or region of the stress-strain curve which produces an elastic strain but under a load of at least 0.1 grams/denier, the permanent extension or set of the filaments being less than 4 percent, and then releasing the tension on the yarn whereby the crimped structure of the filaments is reformed and the yarn spreads out laterally.
  • the resulting product is useful as a filler material in pillows, quilts, jackets and the like.
  • Such fleeces of continuous filaments are preferably manufactured by spinning a synthetic fiber-forming polymer from multiapertured spinning heads so that the filaments, preferably after being drawn or stretched, are accumulated on a suitable base or support means. Texturizing or bulking of the filaments is usually carried out either by subjecting the filaments to a turbulent blowing or by applying an electrical field before collecting the filaments into a fleecelike web.
  • One object of the present invention is to provide a voluminous fleece or filler which can be used for filling cushions, pillows, or the like and which are nonwoven fibrous webs or planar structures, preferably made up in layers or in the form of a coil or roll..ln particular, it is an object of the invention to provide a process for the production of a nonwoven fleece composed of continuous fiber-forming thermoplastic filaments by using an initially spun and stretched yarn in which the filaments have already been given a permanent crimp, preferably by mechanical means'such as a conventional stuffing box.
  • Yet another object of the invention is to provide a process for producing such a fleece which is easily carried out and which produce a novel effect in laterally spreading out the crimped filaments into a more useful nonwoven sheet or web of crimped continuous filaments.
  • the load producing the required elongation should amount to about 0.1 to l g./den., depending upon the particular synthetic filaments, i.e., after relaxation of the tension, should be less than 4 percent and preferably'less than 3 percent.
  • an extremely advantageous initial yarn is one composed of polyethylene terephthalate hollow tubular filaments which have a hollow volume of 10-30 percent, preferably 12-25 percent, with reference to the total volume of each individual filament, i.e., each filament preferably has a uniform annular cross section with the hollow central portion being not more than about 30 percent of the total cross-sectional area of the filament.
  • the expression range of elastic strain should be understood throughout this specification and claims to mean that region of the stress-strain curve which extends up to a specific load value of the individual crimped filaments, this load value being that at which an identical but uncrimped yarn exhibits a permanent extension below 4 percent.
  • This elastic elongation i.e., that increment or region of elongation where the filament remains almost completely elastic except for a small amount of permanent extension.
  • the optimum loading and with it the degree of elongation varies for different types of polymer filaments, but may be readily determined by a few preliminary tests.
  • the maximum specific loading may be considered to be the load value at which the crimp of the yarn, after removal of load, still just reforms or springs back along the yarn. However, it is generally advisable to keep the load below this maximum loading value.
  • the temporary elongation is preferably carried out using such a load that the permanent extension or set produced in the yarn is less than 3 percent and most preferably less than 1.5 percent.
  • the load must be at least Oil g./den.
  • Continuous linear polyester filaments and particularly polyethylene filaments which have been spun in a conventional manner to provide a hollow tubular structure may have a relatively wide range of crimping arc number, depending on the end use of the fleece.
  • a fleece for filling cushions or pillows in the form of a coiled or layered web or the like it is sufficient to provide a permanent crimping of these hollow tubular filaments of about 50 to l20 arcs per 10 cm., preferably about 65l00 arcs per 10 cm.
  • the process and products of the invention are not limited, however, to these initial polyester materials. If the nonwoven fibrous webs or fleeces are to be further processed in order to produce a lining material or insert of minimum thickness or a nonwoven textile fabric where the bulk or voluminosity of the web is less important, then yarns or tows made from polyamides, polypropylene or other synthetic fiber-forming polymers may also be used to great advantage.
  • the chemical structure of the polymers being used, including stereoregulation, and any pretreatments to which the filaments have been subjected during their manufacture naturally have an effect on the process.
  • the spinning conditions, the nature and degree of the drawing for molecule orientation and the crimping to which the filaments have been subjected affect the final product. These factors must be considered whenselecting the process conditions and when trying toproduce certain properties in the final product.
  • One important influence on the process according to the invention is the degree of crimping, i.e., the number of crimping arcs per unit of length. It does not matter what kind of crimping is used or how the crimping has been obtained. For example, yarns crimped in a stuffing box, which exhibit a so-called two-dimensional crimp, are especially useful, but the process may also be applied very successfully to filaments which have a three-dimensional crimp. Such filaments or yarns are obtained, for example, by spinning two chemically or physically different polymers using special nozzles, to produce so-called-composite threads or filaments.
  • the individual filament titer or denier may vary within relatively wide limits and must ordinarily be chosen to suit the intended application or area of utility of the fleece. Likewise,
  • the spreading out or lateral separating effect is most strongly influenced by the degree of elongation which, according to the process of the invention, must take place in the region of elastic strain but under a load of at least 0.1 g./den.
  • the spreading apart of the crimped filaments is usually only slight but a temporary elongation within such limits is still reasonably within the scope of the invention in terms of a distinguishing effect.
  • the crimp When the loading force tension of the elongation acts on a yarn of crimped filaments, the crimp first disappears" by becoming latent and the yarn as well as the individual filaments appear to be almost smooth before the filaments are subjected to the elongation or elastic strain. It is desirable, prior to the device which elongates the yarn within the region of elastic strain, to arrange an apparatus in which elongation may take place predominantly within the region of crimping elongation, i.e., simply to straighten out" the crimp. For example, conventional braking devices are suitable for this purpose.
  • the width of the nonwoven web or fleece which is produced depends, naturally, on the number of individual filaments of the yarn or two being used. This number of individual filaments, depending on the purpose for which the product is intended, may be for example between 3,000 and 30,000 or more.
  • the process is not limited to the use of any specific apparatus, although devices in which the elongation of the yarn is accomplished between triple or quadruple rollers, i.e., a series of draw rolls, have been found to be particularly suitable. Such devices must allow for the accurate adjustment and maintenance of the low degrees of tension which are necessary to provide a relatively low load.
  • the yarn maybe completely released of tension and taken off or accumulated in a tensionless condition.
  • it is usually more convenient to guide the treated yarn after the second set of draw rolls, over an additional takeoff device behind which a traversing device can be arranged.
  • the handling of the yarn between the second set of draw rolls and the takeofi' device may be varied within wide limits.
  • the spreading out effect is produced in the yarn in this relaxing zone, the extent of this effect depending on the lessening of the tension.
  • the elongation of the yarn according to the invention may also be accomplished in two stages, e.g., if the peripheral velocities of three roller units are in sequence v v and v then one maintains relative speeds in which v v v applies.
  • FIG. 1 is a partially schematic side elevational view of apparatus which is suitable for carrying out the process of the invention
  • FIG. 2 is a perspective view of a coiled fleece web as one preferred type of nonwoven product obtained by the process of the invention.
  • FIG. 3 is an enlarged perspective view of a small section of another type of nonwoven product obtained by the process of the invention.
  • EXAMPLE Polyethylene terephthalate having a solution viscosity (1 of I .60, measured as a l percent solution of the polymer in mcresol at 25 C., is spun through a l-aperture nozzle or spinning head to produce a hollow tubular filament yarn.
  • the yarn is drawn, i.e., stretched, in a conventional manner under an atmosphere of steam maintained at C. (draw ratio l:4. l and the stretched filaments are subsequently crimped in a stuffing box.
  • the resulting yarn exhibits the following properties:
  • the crimping are number is counted on a large number of filament lengths which have been loaded with a weight of 3 mg., the observed arcs being those variations considered to be any marked change in direction; i.e., a sine curve would correspond to two crimping arcs).
  • this initial polyester crimped yarn is fed from a supply container 1, via a torsion bar brake 2 and the deflecting rods 3 and 4 to a set of three rollers 6.
  • a yarn guide 5 which is particularly advantageous for the purpose of initially spreading out or positioning a large number of individual filaments into a web or band of minimum width.
  • the peripheral velocity of the rollers of the set of three rollers 6 is 60 m/min.
  • the yarn is elongated between the triple roller arrangement 6 and a second more rapidly rotating triple roller arrangement 7, by between 8 percent and I0 percent.
  • the tension applied by this drawing operation corresponds to a loading of 0.75 g./den.
  • the yarn After leaving the triple rollers 7, the yarn is then guided over two rods 8 to a pair of rollers 9, the peripheral velocity of which corresponds to that of the triple roller arrangement 7. Behind or after the pair of rollers 9, the yarn quickly spreads out with a complete release of tension to form a nonwoven fibrous web or fleece having a width of approximately 55 cm. and is deposited, by means of a simple traversing device 10 in a collecting carton-or box 11.
  • the nonwoven fibrous web is wound loosely, e.g., on a reel or spindle either from the supply container shown or directly after leaving the takeoff rolls 9 as described.
  • the nonwoven web or fleece may also be deposited in a number of relatively flat layers one above the other.
  • FIG. 2 merely shows a cushion filling in the form of a wound or coiled web of the fleece.
  • FIG. 3 shows a sector of a filler for a quilted article, in a highly enlarged perspective view, which has been formed by cross-laying of individual fleece bands or webs.
  • the procedure of the invention is also applicable to a wide variety of nonwoven fibrous webs or fleeces produced from other fiber-forming polymer or from mixtures of continuous thermoplastic crimped filaments.
  • the nonwoven fleeces of the invention are especially distinguished by a substantially complete absence of broken or otherwise severely distorted filaments aside from the intentional permanent crimping which retains practically its original capacity for crimp contraction. At the same time, one achieves a much more voluminous fleece or web than could have been expected from the relatively mild processing conditions of the invention.
  • the fleece webs of the invention are also distinguished by a good coherence, and if desired they can be further impregnated with a bonding agent or otherwise bonded together to form a more rigid but highly flexible and porous fibrous structure.
  • Process for the production of a nonwoven fleece from continuous filaments of a synthetic fiber-forming polymer which comprises: subjecting a spun and stretched yam made of permanently crimped individual filaments having an individual titer of 0.5 to denier and a crimping arc number of from 50 to 150 arcs per l0 cm. to a temporary elongation sufficient to bring the individual filaments within the range of their elastic strain under a load of at least 0.l grams/denier; and then releasing the tension on the yarn sufficiently to refonn the crimped structure of the individual filaments and to permit said yarn to spread out laterally.
  • a process as claimed in claim 1 wherein the crimping are number is between about 65 and arcs per 10 cm.
  • a process as claimed in claim 1 wherein said yarn is made from hollow tubular filaments in which the hollow volume amounts to about 10 to 30 percent of the total volume of each individual filament.
  • hollow tubular filaments are polyethylene terephthalate filaments.
  • a process as claimed in claim 9 wherein the hollow volume is between about 12 and 25 percent of the total volume of each individual filament.
  • a process as claimed in claim 9 wherein said elongation of the yarn is carried out under a load of between about 0.5 and 0.8 g./den.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Artificial Filaments (AREA)
US3574908D 1968-01-02 1968-12-26 Production of a nonwoven fleece of continuous filaments Expired - Lifetime US3574908A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DEG38682U DE1982562U (de) 1968-01-02 1968-01-02 Fuellkoerper fuer kissen.
DEG38686U DE1982430U (de) 1968-01-04 1968-01-04 Vliesstoffbahn fuer steppartikel.
DE19681760471 DE1760471A1 (de) 1968-01-02 1968-05-22 Verfahren zur Herstellung von Vliesen aus endlosen Faeden
US78701368A 1968-12-26 1968-12-26
US7534870A 1970-09-25 1970-09-25

Publications (1)

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US3574908A true US3574908A (en) 1971-04-13

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US3574908D Expired - Lifetime US3574908A (en) 1968-01-02 1968-12-26 Production of a nonwoven fleece of continuous filaments
US3723238D Expired - Lifetime US3723238A (en) 1968-01-02 1970-09-25 Non-woven fleece of continuous filaments

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Application Number Title Priority Date Filing Date
US3723238D Expired - Lifetime US3723238A (en) 1968-01-02 1970-09-25 Non-woven fleece of continuous filaments

Country Status (8)

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US (2) US3574908A (zh)
BE (1) BE724768A (zh)
CH (1) CH487284A (zh)
DE (1) DE1760471A1 (zh)
FR (1) FR1600672A (zh)
GB (1) GB1245437A (zh)
LU (1) LU57476A1 (zh)
NL (2) NL6818773A (zh)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN1074796C (zh) * 1999-03-11 2001-11-14 昌邑市无纺布厂 束状超细纤维聚氨酯服装面料及制造方法
EP3085824A4 (en) * 2013-12-16 2017-10-04 Xiamen Hejie Non-woven Products Co., Ltd. Non-woven fabric coil

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DE2449408C3 (de) * 1974-10-17 1978-08-31 Hoechst Ag, 6000 Frankfurt Fallfaserkabel aus Polyesterfäden und Verfahren zu dessen Herstellung
EP0088191A3 (en) * 1982-03-08 1986-02-19 Imperial Chemical Industries Plc Polyester fibrefill blend
DE3301268A1 (de) * 1983-01-17 1984-07-26 Akzo Gmbh, 5600 Wuppertal Verfahren und vorrichtung zum herstellen von hohlfadenbuendeln
US4486485A (en) * 1983-08-24 1984-12-04 Burlington Industries, Inc. Nonwoven textile structures with reversible stretch
GB8823704D0 (en) * 1988-10-10 1988-11-16 Albany Research Uk Continuous filament insulator
DE4015502A1 (de) * 1990-05-15 1991-11-21 Hoechst Ag Textile verstaerkungseinlage und faserverstaerkter verbundwerkstoff
DE4015504A1 (de) * 1990-05-15 1991-11-21 Hoechst Ag Einlage fuer asphaltschichten
DE4214811C2 (de) * 1992-05-04 1995-11-30 Daimler Benz Ag Prüfkörper zur Simulation der Verformung eines biologischen Muskelgewebes unter Stoß- bzw. Quetschbelastung
US6120873A (en) * 1994-08-15 2000-09-19 Owens Corning Fiberglas Technology, Inc. Conformable insulation assembly
US5508079A (en) * 1994-08-15 1996-04-16 Owens-Corning Fiberglas Technology, Inc. Conformable insulation assembly
US5545453A (en) * 1994-08-15 1996-08-13 Owens Corning Fiberglas Technology, Inc. Conformable insulation assembly
US6370747B1 (en) * 2000-09-13 2002-04-16 Owens Corning Fiberglas Technology, Inc. Method and apparatus for the bulk collection of texturized strand
BR112012007926B1 (pt) * 2009-10-09 2020-12-08 Volm Companies, Inc pano não tecido de malha aberta e material de malha aberta

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US3325874A (en) * 1964-09-10 1967-06-20 Dunlop Rubber Co Tow-forming apparatus

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US665979A (en) * 1900-10-09 1901-01-15 Clement Restein Packing.
US2880056A (en) * 1956-04-09 1959-03-31 Dow Chemical Co Synthetic fibers having a natural crimp and method for preparing the same
US2999296A (en) * 1957-03-25 1961-09-12 Du Pont Novel filaments and fabrics
NL292414A (zh) * 1962-05-07 1900-01-01

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3325874A (en) * 1964-09-10 1967-06-20 Dunlop Rubber Co Tow-forming apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1074796C (zh) * 1999-03-11 2001-11-14 昌邑市无纺布厂 束状超细纤维聚氨酯服装面料及制造方法
EP3085824A4 (en) * 2013-12-16 2017-10-04 Xiamen Hejie Non-woven Products Co., Ltd. Non-woven fabric coil

Also Published As

Publication number Publication date
GB1245437A (en) 1971-09-08
US3723238A (en) 1973-03-27
CH487284A (de) 1970-03-15
NL57476C (zh) 1900-01-01
NL6818773A (zh) 1969-07-04
LU57476A1 (zh) 1969-03-13
BE724768A (zh) 1969-06-02
DE1760471A1 (de) 1971-12-30
FR1600672A (zh) 1970-07-27

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