US3373073A - Elastically extensible band - Google Patents

Elastically extensible band Download PDF

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Publication number
US3373073A
US3373073A US352874A US35287464A US3373073A US 3373073 A US3373073 A US 3373073A US 352874 A US352874 A US 352874A US 35287464 A US35287464 A US 35287464A US 3373073 A US3373073 A US 3373073A
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United States
Prior art keywords
threads
band
longitudinal
elastically extensible
longitudinal threads
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US352874A
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English (en)
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Turcksin Christian Heinrich
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Individual
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Individual
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Publication of US3373073A publication Critical patent/US3373073A/en
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Classifications

    • 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
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/04—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
    • B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
    • B29B15/10—Coating or impregnating independently of the moulding or shaping step
    • B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
    • B29B15/122—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length with a matrix in liquid form, e.g. as melt, solution or latex
    • B29B15/125—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length with a matrix in liquid form, e.g. as melt, solution or latex by dipping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/504—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC] using rollers or pressure bands
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0058—Liquid or visquous
    • B29K2105/0064—Latex, emulsion or dispersion
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24058—Structurally defined web or sheet [e.g., overall dimension, etc.] including grain, strips, or filamentary elements in respective layers or components in angular relation
    • Y10T428/24074—Strand or strand-portions
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24132—Structurally defined web or sheet [e.g., overall dimension, etc.] including grain, strips, or filamentary elements in different layers or components parallel
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24521—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness with component conforming to contour of nonplanar surface
    • Y10T428/24537—Parallel ribs and/or grooves
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/2457—Parallel ribs and/or grooves

Definitions

  • This invention relates to an elastic band, a belt or the like, which is extensible both in longitudinal and in transverse direction, and to a method of producing same.
  • Bands of rubber which are extensible in longitudinal and transverse direction are known. Such bands are only of small elasticity when they have a sufiicient loading strength, specially tensile strength. Moreover, such bands easily tear at their fastening or connecting edges. By incorporating fabric inserts by vulcanizing such bands can be strengthened; but their elasticity becomes still smaller thereby.
  • a band elastically extensible in longitudinal and transverse direction comprises longitudinal threads of a number corresponding to the width of the band and arranged in flat juxtaposed relation and each comprising at least one elastically extensible core thread and textile threads wrapped around said core thread, and an elastically extensible film connecting said longitudinal threads.
  • the core threads may consist of raw caoutchouc, rubber or the like, and the elastically extensible film may consist of latex, rubber or the like.
  • the wrapped core threads which expediently consist of raw caoutchouc, they are tensioned to their greatest extensibility, for example 1:6, and then wrapped by several textile threads, such as cotton threads. It may be advantageous to wrap e.g. four textile threads in one direction and e.g. two textile threads in the opposite direction. Through this wrapping the greatest extensibility of the longitudinal threads is indeed reduced, but these longitudinal threads show a surprisingly high elasticity and thus impart a high elasticity in longitudinal direction to the band which is produced by immersing these threads in adhesive liquid, for example, on the basis of latex.
  • the vulcanized adhesive liquid on the one hand, holds together the juxtaposed longitudinal threads, but on the other hand, provides an advantageous elasticity in transverse direction of the band.
  • FIG. 1 is a top plan view of a portion of a band according to the invention.
  • FIG. 2 is a cross section through the band of FIG. 1, and
  • FIG. 3 is a diagrammatic representation of an arrangement for producing the bands from longitudinal threads.
  • a band as proposed by the invention consists of a plurality of juxtaposed longitudinal threads 10 each having a core of one or more round or angular raw caoutchouc threads 11 made of latex.
  • These raw caoutchouc threads 11 have, for example, an extensibility of 1:4 to 1:7, preferably 1:5 to 1:6, and are covered under tension (up to the utmost elongation) by textile threads, such as cotton threads, wrapped in opposite directions, e.g. four threads 12 wrapped in one direction and two threads 13 wrapped in the other direction.
  • each individual longitudinal thread 10 is adjusted to about the half, for example, to about 1:3.
  • a plurality of longitudinal threads 10 are arranged side by side in accordance with the desired width of the band.
  • the longitudinal threads 10 are uniformly pre-tensioned, for example, to double their length before being immersed for their connection in a liquid adhesive having a high elasticity in the finished state.
  • bobbins 15 Fixedly mounted on a driven shaft or running freely on an axle are a plurality of narrow spools or bobbins 15 around each of which an aforedescribed longitudinal thread 10 with a raw caoutchouc core is wound without pre-tension.
  • the number of these bobbins 15 corresponding to the cross section of the longitudinal thread is determined by the number of closely juxtaposed longitudinal threads 10 necessary for the desired Width of the band.
  • the longitudinal threads 11 with raw caoutchouc core are pulled off from the bobbins 15 under a certain tension, e.g. 1:2, and subsequently pass through a so-called comb 16 into which passage holes or grooves are worked at a spacing corresponding to the desired spacing of the longitudinal threads 10 located side by side in the finished hand. These passage holes or grooves are thus located at such a small distance from one another as is to be provided forthe longitudinal threads in the finished band.
  • the longitudinal threads pulled off from the bobbins under like pre-tension and aligned by the comb 16 pass through a preliminary bath 17 in which they are treated witha wetting liquid and an adhesive liquid.
  • the longitudinal threads are coated with a film of the adhesive liquid and, after leaving this bath, the thinly coated longitudinal threads having their wrapping threads at least considerably wetted, if not even penetrated or impregnated with the adhesive liquid, are dried so that the film of adhesive liquid formed around the longitudinal threads and in their intermediate spaces becomes viscous and thereby already holds the longitudinal threads together.
  • the band so formed is guided over a roll 18 provided with grooves or the like and passes through a main bath 19 in which takes place-a further final coating with an adhesive liquid, e.g. on the basis of latex which is especially advantageous.
  • the band coated with a film of adhesive liquid 14 (FIG. 2) is guided over a further roll 20 and then dried in a drying channel 21 following the roll, for which purpose a hot air current of 80 to 120 may be provided.
  • a hot air current of 80 to 120 may be provided.
  • the bands produced according to the aforedescribed method may have a width of up to 600 mm. and more. Also several widths may be produced, which together have a final width of 600 mm. or more. For this purpose.
  • Bands provided with such longitudinal threads show a high elasticity reserve in that by the pre-tension before the wrapping and the further pre-tension of the longitudinal threads before the introduction into the baths, the limit of elasticity is not exceeded, but rather not reached so that the longitudinal threads and thus the bands show an elasticity which does not substantially change during use.
  • Such bands have special significance as covering belts for the furniture industry. They show a surprisingly long service life and can be cut to length in a simple manner and fastened without tearing out at their fastenings.
  • liquids preferably consisting of latex in a manner known per se by additions to accelerate the vulcanization or to improve the aging properties of the vulcanized rubber, for example.
  • the method of producing .such bands may also be modified.
  • the bobbins can be optionally adapted to different cross sections of the longitudinal threads.
  • the spacing of the grooves in the so-called comb may likewise correspond to different cross sections of the threads.
  • the drying may be carried out in drying chambers which are separate from vulcanization chambers following them. Before drying, it is often advantageous to strip off surplus amounts of the e.g. pasty adhesiveliquid from the coated longitudinal threads which owing to the coating join in a band, and to equalize penetrated adhesive liquid.
  • transit time of the longitudinal threads in the preliminary bath and the main bath is determined by the thickness of the desired coating which not only adheres to the surface of the wrapping threads, but also cross-links in an advantageous manner with the wrapping threads so that an intimate connection is formed.
  • a band elastically extensible in longitudinal and transverse direction composed of longitudinal threads of a number corresponding to the width of the band and arranged in fiat juxtaposed relation and each comprising at least one elastically extensible core thread and textile threads wrapped around said core thread, each of said longitudinal threads having a high elasticity thereby imparting a high elasticity to the band in the longitudinal direction across the entire transverse cross section, and an elastically extensible film connecting said longitudinal threads to thereby provide transverse elasticity.
  • a band as claimed in claim 1 wherein the elastically extensible film is composed of material from the group consisting of latex and rubber.
  • a band as claimed in claim 4 wherein a plurality of textile threads are wrapped in opposite directions with respect to each other around each of the core threads.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Laminated Bodies (AREA)
  • Package Frames And Binding Bands (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Springs (AREA)
US352874A 1963-05-31 1964-03-18 Elastically extensible band Expired - Lifetime US3373073A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT443863A AT245755B (de) 1963-05-31 1963-05-31 In Längs- und Querrichtung elastisch dehnbares Band und Verfahren zu seiner Herstellung

Publications (1)

Publication Number Publication Date
US3373073A true US3373073A (en) 1968-03-12

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ID=3564017

Family Applications (1)

Application Number Title Priority Date Filing Date
US352874A Expired - Lifetime US3373073A (en) 1963-05-31 1964-03-18 Elastically extensible band

Country Status (4)

Country Link
US (1) US3373073A (de)
AT (1) AT245755B (de)
DE (1) DE1435246A1 (de)
GB (1) GB1043931A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4724024A (en) * 1984-05-23 1988-02-09 U.S. Philips Corporation Method of bonding optical fibers to form a flat cable

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4740409A (en) * 1987-03-31 1988-04-26 Lefkowitz Leonard R Nonwoven fabric and method of manufacture
ES2062770T3 (es) * 1990-03-30 1994-12-16 Minnesota Mining & Mfg Materiales compuestos y procedimiento.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2013211A (en) * 1932-10-08 1935-09-03 Herkenberg Karl Process for the production of extensible electric conductors
US2380373A (en) * 1944-02-09 1945-07-31 Edward D Andrews Method of handling elastic thread and product thereof
US2593284A (en) * 1945-12-19 1952-04-15 Don P Gavan Belting
US3032963A (en) * 1959-08-11 1962-05-08 United States Steel Corp Cord and article containing the same
US3042569A (en) * 1958-11-19 1962-07-03 Theodore R Paul Method of making an unwoven fibrous tape
US3126312A (en) * 1960-05-12 1964-03-24 nickerson

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2013211A (en) * 1932-10-08 1935-09-03 Herkenberg Karl Process for the production of extensible electric conductors
US2380373A (en) * 1944-02-09 1945-07-31 Edward D Andrews Method of handling elastic thread and product thereof
US2593284A (en) * 1945-12-19 1952-04-15 Don P Gavan Belting
US3042569A (en) * 1958-11-19 1962-07-03 Theodore R Paul Method of making an unwoven fibrous tape
US3032963A (en) * 1959-08-11 1962-05-08 United States Steel Corp Cord and article containing the same
US3126312A (en) * 1960-05-12 1964-03-24 nickerson

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4724024A (en) * 1984-05-23 1988-02-09 U.S. Philips Corporation Method of bonding optical fibers to form a flat cable

Also Published As

Publication number Publication date
GB1043931A (en) 1966-09-28
DE1435246A1 (de) 1969-02-06
AT245755B (de) 1966-03-10

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