US3511740A - Tufted fabrics and methods of making them - Google Patents

Tufted fabrics and methods of making them Download PDF

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US3511740A
US3511740A US481963A US3511740DA US3511740A US 3511740 A US3511740 A US 3511740A US 481963 A US481963 A US 481963A US 3511740D A US3511740D A US 3511740DA US 3511740 A US3511740 A US 3511740A
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fibres
layer
fibrous
layers
needle
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Arthur Joseph Sanders
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British Nylon Spinners Ltd
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British Nylon Spinners Ltd
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    • 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
    • D04H11/00—Non-woven pile fabrics
    • D04H11/08—Non-woven pile fabrics formed by creation of a pile on at least one surface of a non-woven fabric without addition of pile-forming material, e.g. by needling, by differential shrinking
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51104—Topsheet, i.e. the permeable cover or layer facing the skin the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections
    • 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
    • D04H1/48—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 in combination with at least one other method of consolidation
    • 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
    • D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
    • 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
    • D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
    • 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
    • Y10T428/23907—Pile or nap type surface or component
    • Y10T428/23957—Particular shape or structure of pile
    • 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
    • Y10T428/23907—Pile or nap type surface or component
    • Y10T428/23979—Particular backing structure or composition
    • 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
    • Y10T428/23907—Pile or nap type surface or component
    • Y10T428/23986—With coating, impregnation, or bond
    • 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.]
    • 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

  • Multi-layer non-woven fabrics are made by sandwiching a mass of intermediate fibres between two layers of different fibres which contain a major proportion of crimpable fibres, needle-punching the assembly to carry fibres-from one outer layer through the opposite outer layer in the form of tufts, and subsequently causing the crimpable fibres to crimp.
  • the crimped fibre tufts form rivet-like protuberances which press the surface of the structure.
  • This invention relates to a nonwoven fabric and a method by which it can be -made by needle-punching an assembly of .relatively loosely associated fibres and to articles derived therefrom.
  • nonwoven fabrics by the needle-punching in a conventional needle-loom, which may be a single A or double bed construction, of an assembly of relatively sembly retractable fibres which, following needling and their orientation into planes normal to the faces of the brous assembly, are retracted, thereby compacting the fibrousl assembly, the retraction reinforcing the needling action in imparting strength to the resulting fabrics.
  • the appearance of the fabric resulting from needling to this depth is quite different to the fabric which is obtained when the depth of needling is such that fibres do not protrude beyond the surface thereof.
  • the latter fabric resembles a felt, having a flat drab surface of poor aesthetic appeal and is limited in its applications to these situations where conventional felts are suitable.
  • the needled fibres in securing the central layer to the outer layers with a corresponding improvement in dimensional stability, tensile strength and resistance to delamination, behave functionally in a manner similar to rivets.
  • Needling to the depth, and -in the manner described produces articles with novel surface effects, since the face of one or both of the outer layers carries tufts derived from the opposite outer layer.
  • the extent to which the face of each of the outer layers is covered by tufts depends to Ia large extent on the effective number of fibres 'which are oriented per square inch of surface and it Imay vary from almost total coverage, when the tufts form a new outermost surface hiding the existence of the face of the outer layer from visual discernment, to less than twenty percent of the total surface.
  • the invention in one of its aspects provides a nonwoven fabric which comprises three superimposed fibrous layers, the fibres constituting the central layer being different from the crimped fibres of which the two outer layers consist of, or comprise to a major extent, said central layer being keyed in posititon by needled fibres which extend in the thickness direction of the fabric from a fibrous outer layer to the opposite outer layer and which project beyond the face of the opposite outer layer as crimped fibre tufts.
  • nonwoven fabric which results from this tufting and crimping has good dimensional stability, tensile strength and resistance to delamination we find that for certain end uses in which the nonwoven article is, for example, subjected to prolonged hard wear, it is advantageous to bond together fibres in the outer fibrous layers and also the needled fibres extending therethrough.
  • the nonwoven fabric is modified by bonding together some or all of the fibres in the outer layers and the needled fibres extending therethrough.
  • Bonding in this manner ensures that the needled fibres are secured in position and thereby provides a more effective anchoring of the central layer to the two outer layers. It also provides reinforcement for the needled fibres in their role of retaining fibres of the outer layers in position.
  • This invention also provides a method for making a nonwoven fabric in sheet for-m from three superimposed layers with both of the outer layers comprising an assembly of relatively loosely arranged fibres of which the major proportion at least are crimpable fibres, and the central layer being in the form of an assembly of relatively loosely arranged bres which are different to the fibres constituting the major proportion of the fibrous assemblies of the outer layers, the method comprising needle-punching fibres in either or both of the outer layers through the central layer and the opposite outer layer so that they extend beyond the face of one or both outer layers as fibre tufts, and thereafter subjecting said I needle-punched structure to a treatment to crimp the delamination ⁇ is required, fibres inthe outer layers and the needled fibres extending therethrough, may be bonded together by subjecting either or both of the fibrous layers or the entire article to a bonding operation.
  • Needling of the fibres of?V the outer layers in the manner described is most effectively achieved by passage of the layered structure through a conventional single or doublebed needle loom.
  • the layers arranged in superimposed fashion may be passed through a single-bed needle i .l loom twice, the fabric being turned over between passes l through :the machine.
  • needling of the two outer fibrous Webs may ⁇ be carried out in a single passage through the loom.
  • the loom is adjusted, and'this can readily be effected, so as to give a depth of needling adequate to cause the needled fibres to project, as fibre tufts through the outer layer opposite to the layer which the needles initially r entered.
  • Heterofilaments are unitary filaments consisting of one or more polymeric components contiguous and adherent to one another continuously along the length of the filament, and they possess potential crimp as a result of the difference in the physical properties of the two components. If the two components of the heterofilament possess, for example, substantially different residual shrinkage'properties, a crimp is caused by the differential shrinkage of the two components developed by a suitable treatment.
  • the fibres from which the fibrous assembly constituting the central layer is formed must be inert (or at least substantially so) to the particular treatment by which fibres -in the outer layers are crimped and bonded.
  • viscose rayon, ceramic, glass or cellulose triacetate fibres may be used.
  • fibres in the central layer may be fully crimped either before the assembly which constitutes that layer is sandwiched between the other two layers, or subsequently to sandwiching, but prior to needling.
  • Each fibrous assembly may be derived from a single fibrous web of relatively loosely associated fibres or a plurality of such webs.
  • the thickness of the various layers may vary quite considerably and the factors which may enter into their determination include the desired lend use for the fabric and the penetration density at which it is intended to needle punch the assembly.
  • the fibrous webs may be made by the air deposition of fibres, by garnetting processes, lby carding fibres followed by the cross-laying of the carded webs, by fiuid paper-making techniques and indeed -by any method whereby a web of loosely associated fibres may be formed.
  • Continuous filament webs in which the filaments may be quite independent of one another or intermingled in the form of a yarn may conveniently be prepared by drawing off the filaments directly from a spinning unit using, for instance, an aspirator jet, or they may be formed from a package or other storage device for yarn already spun.
  • the treatment by which fibres in the outer layers are crimped may involve, for example, the application of heat or a swelling agent to the relevant fibrous assemblies orto the entire structure.
  • the fibre constituting the fibrous assemblies and then applying heat, and normally pressure also, to thestructures.
  • the fibrous assemblies which form the outer layers of the fabric consist of, or comprise amajor proportion of heterofilaments which contain a potentially adhesive com- ⁇ ponent, that is to say, a component which may be rendered adhesive (activated) under conditions which leave the other component or components substantially unaffected, and thereby serve to bond together the fibres.
  • a potentially adhesive com- ⁇ ponent that is to say, a component which may be rendered adhesive (activated) under conditions which leave the other component or components substantially unaffected, and thereby serve to bond together the fibres.
  • Heterofilaments as constituents of the outer fibrous webs possess a number of advantageous properties. For instance, the ability of the heterofilaments to crimp is inherent and is not attributable to, and dependent upon, a special method of making them, as in the case with crirnpable homofilaments. Furthermore, the heterofilaments may possess a built-in-binding action on account of the presence of the potentially adhesive component therein so that fibre bonding may be accomplished readily and conveniently in what is, in effect, an in situ development of the bonding agent through activation.
  • Activation is normally accomplished without destruction of the heterofilament fibres for the activated component is maintained in association with the other component or components of the fibre and does not migrate throughout the fibrous web.
  • heterofilaments containing such a potentially adhesive component are polyhexamethylene adipamide-polyepsilon caprolactam (nylon 66/6) fibres in which polyepsilon caprolactam is the potentially adhesive component, polyhexamethylene adipamde polyomegaaminoundecanoic acid (nylon 66/11) fibres in which the polyomegaaminoundecanoc acid is the potentially adhesive component, and polyhexamethylene adipamide/ polyhexamethylene adipamde-polyepsilon caprolactam copolymer fibres in which the copolymer component is the potentially adhesive component.
  • the potentially adhesive component may be activated by aheat treatment.
  • Heterofilaments other than those based on different polyamides may also be used.
  • heterofiiaments formed, for example, from polymers -based on polyesteramides, polyesters, polyhydrocarbons and polyurethanes may be suitable.
  • FIG. 1 is a schematic elevational view of apparatus suitable for carrying out the present invention
  • FIG. 2 is an enlarged fragmentary view of the threelayer assembly being fed to the needle bed of the apparatus of FIG. l;
  • FIGS. 3 and 4 are enlarged fragmentary views of the three-layer assembly showing a fibre tuft after needling and after crimping, respectively.
  • fibrous assemblies 10, 12, 14 formed in each case from a plurality of fibrous webs were superimposed one on the other.
  • the individual webs were produced by any technique suitable for fabricating a fibrous web, for example, by air deposition, cards or garnetts (for fibres of staple length).
  • the fibrous assemblies of the outer layers 10 and 14 consist of crimpable fibres, in this pass therethrough and project beyond tufts are crimped and Ibonded (dome-like) protuberances particular instance, heteroiilaments, while the fibrous assembly of the central layer 12 consists of fibres inert -to the treatment by which crimping of the heterofilaments reciprocate in the vertical plane and provided with the usual barb needles which pass in and out of the sandwich structure.
  • the needles pass initially through the top fibrous layer 10, some of the fibres of which are engaged by the barbs, after which the needles penetrate the central fibrous layer 12 and pass into the bottom fibrous layer 14.
  • the barbs of the needles are generally completely filled by fibres from the top fibrous layer and few,- if any fibres, are picked up from the fibrous central layer.
  • the fibres carried by the barbs of the needles from the top layer can pass entirely across the bottom fibrous layer and protrude a variable distance beyond its outer surface as fibre tufts 22 (FIG. 3).
  • the disposition of the needled fibres in this way is ensured by the depth of the needlepunching which is readily adjusted to punch to the necessary depth in a known manner.
  • the fibre tufts 22, may, provided there is a sufficient density thereof, this being directly related to the penetration density, form a pile surface.
  • the needled fibres which pass from one fibrous layer through the fibrous central layer and through the opposite fibrous layer, serve to key together the three layers.
  • the keying together of the layers and the fibre entanglement resulting from the needle punching gives the needlepunched assembly a useful tensile strength, dimensional stability and resistance to delamination.
  • These properties may be improved by subjecting the assembly to a further needle-punching operation in the opposite direction, relative to the arrangement of the layers, to the firstneedle-punching operation. This may be achieved by everting the needled assembly, for instance, by passage around a series of rollers, and then taking it through the same, or another, but similar, needle loom.
  • the needles encounter initially the fibrous outer layer which, during the first needle-punching operation, was on the bottom of the sandwich, and, consequently, fibres are carried by the needles, from the top fibrous layer through the fibrous central layer and through the opposite fibrous outer layer which is now the bottom layer of the structure.
  • the two needlepunching operation can be accomplished in one stage by passing the sandwich through -a double-bed needle loom.
  • the extent to which the surface of the outer layer is covered by fibre t ⁇ ufts 22 depends, to a large extent, on the number of needle penetrations for a given area. This coverage may be almost complete, when the tufts effectively form a new outermost surface hiding the exostemce of faces from visual discernment. -Needling in this manner provides the fabric with novel and interesting surface effects and an appearance resembling a conventional pile fabric.
  • lFibres in the outer layers and the needled fibres which their base as fibre in the same treatment which may, for example, involve exposing the tufted structure to the action of heat from an oven 24, or a chemical medium.
  • the needled fibres like rivets in another, but analogous context, secure the three layers of the structure to one another and provide the resulting fabric with good dimensional stability, tensile strength and resistance to delamination. Crumpling of the tufts of the needled fibres into mushroom-shaped protuberances which press against the faces of the outer layers provides for a more effective keying action. The crumpling of the tufts in the manner described results in a greater spread of the tufts over the faces of the outer layers so that a greater area thereof is covered and a more attractive appearance conferred upon the fabric.
  • the needle-punched fabric comprises five layers arranged in the following sequence:
  • a -fibrous layer 10 which contains vertically disposed fibres and fibres arranged in the plane of the layer.
  • Another fibrous layer 14 which contains vertically disposed libres and fibres arranged in the plane of the layer.
  • the dimensional stability, tensile strength and resistance to delamination are all enhanced by the bonding together of the fibres, this being achieved (in the same treatment by which crimp was effected) by the activation of the potentially adhesive component of the heterofilament fibres.
  • the effect of bonding is to anchor them more firmly in position, while in relation to the outer fibrous layers generally it reinforces the effect of crimp in imparting to the layers dimensional stability and a reduced susceptibility to pickiness.
  • This invention provides fabrics wherein properties such as handle, wear resistance and abrasion resistance are largely attributable to the nature of the fibres 4in the fibrous web outer layers.
  • Such outer layers need constitute only a small proportion of thel total volume and/or weight of the final fabric and the central layer may be formed of fibres which, although deficient in wear and abrasive resistance properties and possessing a poorly developed textile-like handle i.e. harsh, are more readily available and/or less expensive.
  • fibres in the central layer may be chosen for a particular property they possess, and which commands fabrics containing such fibre in the central layer to particular end uses.
  • the fibres, or the fibrous web formed therefrom and which constitutes the central layer of the fabric may be highly absorbent, and hence particularly adapted for use in surgical dressings, sanitary napkins and diapers, in towelling, wiping cloth and filter materials.
  • Cotton fibres provide an example of suitable absorbent fibres.
  • the central layer in the form of an absorbent fibrous (for example, cotton) web, is covered by a thin envelope or casing of crimpable fibres, to which it is secured by tufting a proportion of the crimpable fibres through the structure and then developing crimp and optionally bonding the fibres.
  • the fabrics are also useful in a host of other applications which do not necessarily demand an absorbent central layer. They include for example, their use as blanket materials, as laundry or paper-maker felts, or as wedding materials.
  • the layered, sandwich structure after being passed' between the nip of a pair of co-operating rollers was passed twice through a needleloom using regular barbed needles (32 gauge) supplied by the Textile. Machine Works, Leicester, England as Type N5/2350/1.
  • the needle loom was set so that the structure, which was turned over be-v tween passes through the loom, received 300 penetrations -per square inch of surface and depth of needling was half an inch.
  • the depth of needling represents the distance which the point of the needle projects beyond the surface of the structure, opposite the surface it entered, and it is an approximate indication of the actual bre tuft height.
  • the tufted product was then heated in an air oven at a temperature of 250 C. for a period of three minutes. Under these conditions, the heterofila-ment fibres in the webs of the outer layers crimped, as did the re-oriented 'l tufted fibres, and bonded together as a result of activation of the copolymer component of the heterofilaments.
  • each fabric determined on an Instron Tensile Tester by clamping a 5 cm. length of sample betewen the jaws of -the tester and elongating the sample at a rate of 51cm/min. -.e. 10U percent/min., at a temperature of 21 C. and a relative humidity of 60%.
  • the tufted fabric had a tensile strength of 72 kg./gm./cm. and Iwas approximately 100 percent stronger than the needled fabric which had a strength of 37 kg./gm./cm.
  • EXAMQLE 2 A quantity of l5 denier two inch staple fibres formed from heterofilaments consisting of equal proportions by weight of poly(hexar'nethylene adipamide) as one component and an 80:20 random copolymer of poly(hexa methylene adipamide) and poly(epsilon caprolactam) as the other, the two components being arranged in a -side-by-side relationship was carded on a cotton card.
  • a fibrous assembly having a weight of approximately 4 ounces per square yard was then formed from the carded layers using a cross-lapping machine which laidgthe laps on top of one another with successive laps disposed at an angle of with respect to the previous lap.
  • the assembly which consisted of loosely associated fibres is hereinafter in this example referred to as Assemz bly C) identical to Assembly A was prepared by the method described for making that assembly. ⁇ l
  • the layered sandwich structure after being passed between the nip of a pair of co-operating rollers was passed twice through a needle loom using regular barbed needles (32 gauge) of the type used in Example 1.
  • the structure was turned over between passes through the loom, which was set so that the depth of needling was half an inch and the structure received 300 penetrations per square inch of surface.
  • the structure so produced was a coherent, nonwoven pliable product, beyond the faces of which there projected fibre tufts derived from the needle punching.
  • the needle-punched product was then heated in an air oven at a temperature of 230-240 C. for a period of 3 minutes. The effect of this heating was two-fold. 1n the first place, the heterolament fibres of Assemblies A and C, and the needled fibres re-oriented therethrough, crimped. This crimping was accompanied by a shrinkage of approximately 6 percent in the area ofA the needledproduct. As a result of crimping, the tufts of the fibre tufts crumpled-up to form mushroom-shaped protuberance which pressed against the face o-f each outer Assemblies A and C. The needled fibres in shape and function resembled ordinary single head rivets and served to hold the inner Assembly B securely in position.
  • the mushneedled lfibres securely in position and give the resulting fabric superior dimensional stability and tensile strength.
  • the surface layers and tufts were dyed with Solway Blue B.N. It had a final Weight of 12 ounces per square yard, a tensile strength of kg./gm./cm. and a good resistance to delamination. It was very suitable as a hard wearing blanket material.
  • EXAMPLE 3 The procedure of Example 2 was repeated except that the fibrous assembly of the central layer was formed from 11/2 inch cotton fibres and it had a weight of 19.2 ounces per square yard. The rate of needling was set to give 600 penetrations per square inch of surface and the depth of needling was half an inch.
  • TheV final product had la weight of 21.4 ounces per square yard and on account of the highly absorbent nature of the central layer was eminently suited for use in the -making of sanitary napkins.
  • the resulting napkins were not only highly absorbent but also air-permeable, conformable and non-irritant to the wearer.
  • Needle-punching in the above manner had the effect of re-orienting fibre in the assemblies which formed the top and bottom layers. In their re-oriented position the fibres extended from one outer layer, through the central layer and the opposite outer layer and projected as tufts beyond the face of that outer layer.
  • the needle-punched product was thereafter heated in an air oven at a temperature of 200 C. for a' period of 'three minutes.
  • the heterofilament fibres in the outer layers crimped, as did the needled fibres, and bonded together as a result of activation of the poly(omegaamnoundecanoic acid) component of the heterofilaments.
  • rl ⁇ he resulting fabric was a coherent, dimensionally stable, nonwoven fabric which possessed a tensile strength of 90 kg./gm./cm. and had the appearance due to the presence of two layers of fibre tufts of certain convention pile-surface fabrics.
  • EXAMPLE 6 A layered structure identical to that 5 was needle-punched by the procedure set forth in that example.
  • the needle-punched structure was immersed in boiling the outer layers crimped and the fibre tufts crumpled-up into mushroomshaped protuberances.
  • the area shrinkage was 7.9 percent.
  • the final fabric had a weight of 18.4 ounces per f square yard, and a softer texture than the fabric of Example 5, although it was less strong, and it made an excellent laundry felt.
  • EXAMPLE 7 A layered structure which consisted of used in Example 10 (l) Top layer A fibrous assembly weighing 4 ounces per square yard and made by carding and cross-lapping 6 denier, six inch staple fibres formed from heterofilaments consisting of equal proportions by weight of poly(hexamethylene adipamide) as one component and an 80:2() random copolymer of poly(hexamethylene adipamide) and poly- (epsilon caprolactam) as the other, the two components being arranged in a sidebyside relationship.
  • This heat treatment crimped the heterofilaments fibres so that there was a 4.4 percent reduction in the area of the structure and the tufts of the needled fibres crumpled up into mushroom-shaped protuberances which -pressed against the face of each of the ⁇ outer layers, and also activated the copolymer component of the heterofilaments thereby bonding together fibres in the outer layers and securing the needled fibres in position.
  • the resulting fabric had a final weight of 21.4 ounces per square yard and made a useful resilient wadding.
  • This layered structure was tufted 4 times using a conventional needle loom having regular 32 gauge
  • the crimped and fused fabric had a final weight of 14.4 ounces per square yard and was eminently suitable for use in the making of blankets since it had good abrasion resistance and Wear properties.
  • said structure comprising two opposite surface fibrous layers containing a major proportion of crimped fibres and an intermediate mass of fibres which differ in their crimpforming characteristics from the fibres in said surface layers, said intermediate fibres being keyed in position by needled fibres extending in the thickness direction of the structure from at least one of the surface layers through the intermediate layer and through and beyond 'the opposite surface layer, a major proportion of said needled fibres being crimped and producing rivet-like protuberances having shank portions within said opposite surface layer and head portions which press against said outer surfacev and impart a pile-like appearance thereto, said protuberances being the inherent result of crimping the needled fibres after needling.
  • a method for making a non-woven fabric in sheet form from at least three superimposed fibrous layers with both outer layers comprising an assembly of relatively loosely arranged fibres of which the major proportion of fibres are crimpable by a crimp-activating treatment, and the fibres which are intermediate the two outer layers being inert to the activation treatment which causes said first-mentioned fibres to crimp, said method comprising 5 needle-punching fibres in at least one of said outer layers through the intermediate fibres and through the opposite outer layer so that they extend beyond the outer face of 12 said opposite outer layer as fibre tufts; and thereafter crimping said first-mentioned fibres by subjecting the needle-punched structure to a crimp-activating treatment which leaving the intermediate fibres unaffected by vsaid treatment to thereby collapse the fibres in said tufts into dome-like protuberances which press against the,

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Epidemiology (AREA)
  • Biomedical Technology (AREA)
  • Mechanical Engineering (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Laminated Bodies (AREA)
  • Nonwoven Fabrics (AREA)
US481963A 1964-09-08 1965-08-23 Tufted fabrics and methods of making them Expired - Lifetime US3511740A (en)

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Cited By (35)

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US3836422A (en) * 1971-01-16 1974-09-17 Freudenberg C Antistatic fabrics
EP1348790A1 (en) * 2002-03-29 2003-10-01 T.N.T. Tessuti Non Tessuti S.r.l. Method and machine for producing a textile article decorated with an embroidery effect and article produced thereby
US20040131820A1 (en) * 2002-12-20 2004-07-08 The Procter & Gamble Company Tufted fibrous web
WO2004059061A1 (en) * 2002-12-20 2004-07-15 The Procter & Gamble Company Tufted laminate web
WO2004058497A1 (en) * 2002-12-20 2004-07-15 The Procter & Gamble Company Inverse textured web
US20050064136A1 (en) * 2003-08-07 2005-03-24 Turner Robert Haines Apertured film
US20050123726A1 (en) * 2002-12-20 2005-06-09 Broering Shaun T. Laminated structurally elastic-like film web substrate
US20050273073A1 (en) * 2004-06-03 2005-12-08 Uni-Charm Corporation Disposable diaper
US20050279470A1 (en) * 2004-06-21 2005-12-22 Redd Charles A Fibrous structures comprising a tuft
US20050283129A1 (en) * 2002-12-20 2005-12-22 Hammons John L Absorbent article with lotion-containing topsheet
US20050281978A1 (en) * 2004-06-21 2005-12-22 Cabell David W Hydroxyl polymer web structures comprising a tuft
US20060087053A1 (en) * 2003-08-07 2006-04-27 O'donnell Hugh J Method and apparatus for making an apertured web
US20060182971A1 (en) * 2005-02-16 2006-08-17 Siemens Westinghouse Power Corp. Tabbed ceramic article for improved interlaminar strength
CN100384621C (zh) * 2002-12-20 2008-04-30 宝洁公司 反向纹理的纤维网
US20080221539A1 (en) * 2007-03-05 2008-09-11 Jean Jianqun Zhao Absorbent core for disposable absorbent article
US20080217809A1 (en) * 2007-03-05 2008-09-11 Jean Jianqun Zhao Absorbent core for disposable absorbent article
US20080274658A1 (en) * 2007-05-02 2008-11-06 Simmonds Glen E Needlepunched nanoweb structures
US7507459B2 (en) 2002-12-20 2009-03-24 The Procter & Gamble Company Compression resistant nonwovens
US20090215193A1 (en) * 2005-05-20 2009-08-27 Orion Diagnostica Oy Application of a reagent to a matrix material
US7682686B2 (en) 2002-12-20 2010-03-23 The Procter & Gamble Company Tufted fibrous web
US20100222759A1 (en) * 2003-12-16 2010-09-02 John Lee Hammons Absorbent article with lotion-containing topsheet
US7838099B2 (en) 2002-12-20 2010-11-23 The Procter & Gamble Company Looped nonwoven web
US8158043B2 (en) 2009-02-06 2012-04-17 The Procter & Gamble Company Method for making an apertured web
US20130067706A1 (en) * 2011-09-20 2013-03-21 Paul Y. Fung Method for making a fibrous absorbent material
US8440286B2 (en) 2009-03-31 2013-05-14 The Procter & Gamble Company Capped tufted laminate web
US8502013B2 (en) 2007-03-05 2013-08-06 The Procter And Gamble Company Disposable absorbent article
US8657596B2 (en) 2011-04-26 2014-02-25 The Procter & Gamble Company Method and apparatus for deforming a web
US8708687B2 (en) 2011-04-26 2014-04-29 The Procter & Gamble Company Apparatus for making a micro-textured web
AT514063A4 (de) * 2013-03-26 2014-10-15 Bca Vertriebsgesellschaft M B H Absorptionsmaterial
US9044353B2 (en) 2011-04-26 2015-06-02 The Procter & Gamble Company Process for making a micro-textured web
US9242406B2 (en) 2011-04-26 2016-01-26 The Procter & Gamble Company Apparatus and process for aperturing and stretching a web
US9724245B2 (en) 2011-04-26 2017-08-08 The Procter & Gamble Company Formed web comprising chads
US9925731B2 (en) 2011-04-26 2018-03-27 The Procter & Gamble Company Corrugated and apertured web
US20210321701A1 (en) * 2020-04-21 2021-10-21 Nike, Inc. Textile having insulation zones and pile zones
US11925539B2 (en) 2018-08-22 2024-03-12 The Procter & Gamble Company Disposable absorbent article

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DE3226041A1 (de) * 1982-07-12 1984-01-12 Didier-Werke Ag, 6200 Wiesbaden Verfahren zur herstellung von genadelten fasernblankets aus mineralischen, insbesondere feuerfesten, fasern und nach dem verfahren hergestellte faserblankets
GB2259476A (en) * 1991-09-11 1993-03-17 Hong Kong Non Woven Fabric Ind Wadding
GB2302669B (en) * 1995-06-27 1997-07-23 Marilyn Olga Jeffcoat Fabrication process for nonwoven fabric and products thus fabricated for use as non-adherent absorbent medical and veterinary dressings

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US3347736A (en) * 1963-11-29 1967-10-17 British Nylon Spinners Ltd Reinforced needleed pile fabric of potentially adhesive multi-component fibers and method of making the same

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AU1732234A (en) * 1934-04-27 1934-09-13 Felt And Textiles Of Australia Limited Manufacture of patterned felt fabrics
US2964039A (en) * 1955-01-18 1960-12-13 Personal Products Corp Preformed, arcuate sanitary napkins
US2840881A (en) * 1955-05-13 1958-07-01 Du Pont Article of manufacture and process of making same
US3122140A (en) * 1962-03-29 1964-02-25 Johnson & Johnson Flexible absorbent sheet
BE643420A (xx) * 1963-02-05 1964-08-05
US3347736A (en) * 1963-11-29 1967-10-17 British Nylon Spinners Ltd Reinforced needleed pile fabric of potentially adhesive multi-component fibers and method of making the same

Cited By (89)

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Publication number Priority date Publication date Assignee Title
US3836422A (en) * 1971-01-16 1974-09-17 Freudenberg C Antistatic fabrics
EP1348790A1 (en) * 2002-03-29 2003-10-01 T.N.T. Tessuti Non Tessuti S.r.l. Method and machine for producing a textile article decorated with an embroidery effect and article produced thereby
US7829173B2 (en) 2002-12-20 2010-11-09 The Procter & Gamble Company Tufted fibrous web
US20080154226A9 (en) * 2002-12-20 2008-06-26 Hammons John L Absorbent article with lotion-containing topsheet
WO2004058497A1 (en) * 2002-12-20 2004-07-15 The Procter & Gamble Company Inverse textured web
WO2004058118A1 (en) * 2002-12-20 2004-07-15 The Procter & Gamble Company Tufted laminate web
US20040229008A1 (en) * 2002-12-20 2004-11-18 The Procter & Gamble Company Inverse textured web
US20040265534A1 (en) * 2002-12-20 2004-12-30 The Procter & Gamble Company Tufted laminate web
US20040265533A1 (en) * 2002-12-20 2004-12-30 The Procter & Gamble Company Tufted laminate web
US20070116926A1 (en) * 2002-12-20 2007-05-24 Hoying Jody L Tufted laminate web
US20050123726A1 (en) * 2002-12-20 2005-06-09 Broering Shaun T. Laminated structurally elastic-like film web substrate
US8075977B2 (en) 2002-12-20 2011-12-13 The Procter & Gamble Company Tufted laminate web
WO2004059061A1 (en) * 2002-12-20 2004-07-15 The Procter & Gamble Company Tufted laminate web
US20050283129A1 (en) * 2002-12-20 2005-12-22 Hammons John L Absorbent article with lotion-containing topsheet
US9694556B2 (en) 2002-12-20 2017-07-04 The Procter & Gamble Company Tufted fibrous web
US7785690B2 (en) 2002-12-20 2010-08-31 The Procter & Gamble Company Compression resistant nonwovens
US20100196653A1 (en) * 2002-12-20 2010-08-05 John Joseph Curro Tufted laminate web
AU2003301010B2 (en) * 2002-12-20 2007-01-18 The Procter & Gamble Company Inverse textured web
US7172801B2 (en) 2002-12-20 2007-02-06 The Procter & Gamble Company Tufted laminate web
US7838099B2 (en) 2002-12-20 2010-11-23 The Procter & Gamble Company Looped nonwoven web
US7270861B2 (en) 2002-12-20 2007-09-18 The Procter & Gamble Company Laminated structurally elastic-like film web substrate
AU2003301007B2 (en) * 2002-12-20 2008-01-31 The Procter & Gamble Company Tufted laminate web
CN100384621C (zh) * 2002-12-20 2008-04-30 宝洁公司 反向纹理的纤维网
US20080119807A1 (en) * 2002-12-20 2008-05-22 Curro John J Tufted laminate web
US8153225B2 (en) 2002-12-20 2012-04-10 The Procter & Gamble Company Tufted fibrous web
EP2332504A1 (en) * 2002-12-20 2011-06-15 The Procter & Gamble Company Tufted fibrous web
US7410683B2 (en) 2002-12-20 2008-08-12 The Procter & Gamble Company Tufted laminate web
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US20040131820A1 (en) * 2002-12-20 2004-07-08 The Procter & Gamble Company Tufted fibrous web
US7732657B2 (en) 2002-12-20 2010-06-08 The Procter & Gamble Company Absorbent article with lotion-containing topsheet
US7507459B2 (en) 2002-12-20 2009-03-24 The Procter & Gamble Company Compression resistant nonwovens
US20090157030A1 (en) * 2002-12-20 2009-06-18 Robert Haines Turner Compression resistant nonwovens
US7553532B2 (en) 2002-12-20 2009-06-30 The Procter & Gamble Company Tufted fibrous web
US7718243B2 (en) 2002-12-20 2010-05-18 The Procter & Gamble Company Tufted laminate web
US7682686B2 (en) 2002-12-20 2010-03-23 The Procter & Gamble Company Tufted fibrous web
US20090233039A1 (en) * 2002-12-20 2009-09-17 Robert Haines Turner Tufted fibrous web
US20100003449A1 (en) * 2002-12-20 2010-01-07 Robert Haines Turner Compression resistant nonwovens
US7648752B2 (en) 2002-12-20 2010-01-19 The Procter & Gamble Company Inverse textured web
US8241543B2 (en) 2003-08-07 2012-08-14 The Procter & Gamble Company Method and apparatus for making an apertured web
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US20060087053A1 (en) * 2003-08-07 2006-04-27 O'donnell Hugh J Method and apparatus for making an apertured web
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US20050064136A1 (en) * 2003-08-07 2005-03-24 Turner Robert Haines Apertured film
US20100222759A1 (en) * 2003-12-16 2010-09-02 John Lee Hammons Absorbent article with lotion-containing topsheet
US7910195B2 (en) 2003-12-16 2011-03-22 The Procter & Gamble Company Absorbent article with lotion-containing topsheet
US8231592B2 (en) * 2004-06-03 2012-07-31 Unicharm Corporation Disposable diaper
US20050273073A1 (en) * 2004-06-03 2005-12-08 Uni-Charm Corporation Disposable diaper
US20050281978A1 (en) * 2004-06-21 2005-12-22 Cabell David W Hydroxyl polymer web structures comprising a tuft
US7754050B2 (en) 2004-06-21 2010-07-13 The Procter + Gamble Company Fibrous structures comprising a tuft
US20050279470A1 (en) * 2004-06-21 2005-12-22 Redd Charles A Fibrous structures comprising a tuft
US7579062B2 (en) 2004-06-21 2009-08-25 The Procter & Gamble Company Hydroxyl polymer web structures comprising a tuft
US7387758B2 (en) * 2005-02-16 2008-06-17 Siemens Power Generation, Inc. Tabbed ceramic article for improved interlaminar strength
US20060182971A1 (en) * 2005-02-16 2006-08-17 Siemens Westinghouse Power Corp. Tabbed ceramic article for improved interlaminar strength
US20090215193A1 (en) * 2005-05-20 2009-08-27 Orion Diagnostica Oy Application of a reagent to a matrix material
US8697006B2 (en) 2005-05-20 2014-04-15 Orion Diagnostica Oy Application of a reagent to a matrix material
US20080217809A1 (en) * 2007-03-05 2008-09-11 Jean Jianqun Zhao Absorbent core for disposable absorbent article
US8502013B2 (en) 2007-03-05 2013-08-06 The Procter And Gamble Company Disposable absorbent article
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US20080221539A1 (en) * 2007-03-05 2008-09-11 Jean Jianqun Zhao Absorbent core for disposable absorbent article
US11364156B2 (en) 2007-03-05 2022-06-21 The Procter & Gamble Company Disposable absorbent article
US20110174430A1 (en) * 2007-03-05 2011-07-21 Jean Jianqun Zhao Absorbent core for disposable absorbent article
US20080274658A1 (en) * 2007-05-02 2008-11-06 Simmonds Glen E Needlepunched nanoweb structures
US10307942B2 (en) 2009-02-06 2019-06-04 The Procter & Gamble Company Method for making an apertured web
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US8440286B2 (en) 2009-03-31 2013-05-14 The Procter & Gamble Company Capped tufted laminate web
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US8708687B2 (en) 2011-04-26 2014-04-29 The Procter & Gamble Company Apparatus for making a micro-textured web
US9242406B2 (en) 2011-04-26 2016-01-26 The Procter & Gamble Company Apparatus and process for aperturing and stretching a web
US9120268B2 (en) 2011-04-26 2015-09-01 The Procter & Gamble Company Method and apparatus for deforming a web
US9724245B2 (en) 2011-04-26 2017-08-08 The Procter & Gamble Company Formed web comprising chads
US9925731B2 (en) 2011-04-26 2018-03-27 The Procter & Gamble Company Corrugated and apertured web
US9044353B2 (en) 2011-04-26 2015-06-02 The Procter & Gamble Company Process for making a micro-textured web
US9981418B2 (en) 2011-04-26 2018-05-29 The Procter & Gamble Company Process for making a micro-textured web
US9150988B2 (en) 2011-09-20 2015-10-06 Johnson & Johnson Consumer Inc. Method for making a fibrous absorbent material
AU2012216711B2 (en) * 2011-09-20 2015-10-22 Johnson & Johnson Consumer Inc. Method for making a fibrous absorbent material
US8695185B2 (en) * 2011-09-20 2014-04-15 Mcneil-Ppc, Inc. Method for making a fibrous absorbent material
US20130067706A1 (en) * 2011-09-20 2013-03-21 Paul Y. Fung Method for making a fibrous absorbent material
AT514063B1 (de) * 2013-03-26 2014-10-15 Bca Vertriebsgesellschaft M B H Absorptionsmaterial
AT514063A4 (de) * 2013-03-26 2014-10-15 Bca Vertriebsgesellschaft M B H Absorptionsmaterial
US11925539B2 (en) 2018-08-22 2024-03-12 The Procter & Gamble Company Disposable absorbent article
US20210321701A1 (en) * 2020-04-21 2021-10-21 Nike, Inc. Textile having insulation zones and pile zones

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LU49452A1 (xx) 1965-11-08
BE669375A (xx) 1966-06-08
NL6511660A (xx) 1966-03-09
GB1095656A (en) 1967-12-20

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