US3765193A - Method and apparatus for the circular knitting of hook and loop fastener elements - Google Patents

Method and apparatus for the circular knitting of hook and loop fastener elements Download PDF

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Publication number
US3765193A
US3765193A US3765193DA US3765193A US 3765193 A US3765193 A US 3765193A US 3765193D A US3765193D A US 3765193DA US 3765193 A US3765193 A US 3765193A
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US
United States
Prior art keywords
loops
lancette
base fabric
upstanding
loop
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
Application number
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English (en)
Inventor
J Conroux
C Jonville
E Zurcher
D Pilet
C Guignard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RECH DEV TECHNOLOGIQUES SOC
RECHERCHE DEV TECHNOLOGIQUES SOC FR
Velcro Industries BV
Original Assignee
RECH DEV TECHNOLOGIQUES SOC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by RECH DEV TECHNOLOGIQUES SOC filed Critical RECH DEV TECHNOLOGIQUES SOC
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Publication of US3765193A publication Critical patent/US3765193A/en
Assigned to VELCRO INDUSTRIES B.V. reassignment VELCRO INDUSTRIES B.V. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: SOCIETE POUR LA RECHERCHE ET LE DEVELOPPEMENT TECHNOLOGIQUE S.A.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B25/00—Warp knitting machines not otherwise provided for
    • D04B25/02—Tubular machines
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/22—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B23/00—Flat warp knitting machines
    • D04B23/08—Flat warp knitting machines with provision for incorporating pile threads
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/12—Circular knitting machines with independently-movable needles with provision for incorporating pile threads
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2501/00—Wearing apparel
    • D10B2501/06—Details of garments
    • D10B2501/063—Fasteners
    • D10B2501/0632—Fasteners of the touch-and-close type
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S83/00—Cutting
    • Y10S83/909—Cutting strand extending from or lying on strand or package support
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S83/00—Cutting
    • Y10S83/956—Ultrasonic
    • 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
    • Y10T83/00—Cutting
    • Y10T83/97—Miscellaneous

Definitions

  • ABSTRACT In combination with a circular knitting machine means are disclosed for knitting upstanding loops attached to a base fabric to produce a looped pile and means incorporating the use of an ultrasonic transducer for converting loops into hooks and for thermosetting the loops.
  • Hook and loop fasteners are well known and have generally been produced by weaving techniques using special apparatus and methods necessary to affect the production of interconnecting hook and loop fastener elements. Such fasteners have found many applications and operate by having a miltiplicity of hooks of one fastener element interengage with loops in a complementary fastener element. Separation is normally obtained by peeling the respective fastener elements one from the other.
  • the present invention contemplates novel means for knitting a looped pile fabricusing circular knitting techniques. Because of the construction and design of circular knitting machines generally, a serious problem is thus presented when pile forming lancettes are to be employed since how to fix such lancettes relative to the rotary portions of the machinery is not readily done.
  • a further problem for which the present invention provides a solution involves the cutting of pile loops in order to form hooks when it is desired to produce the hooked fastener portion of a hookand loop fastener.
  • the means provided may be readily usedin conjunction with circular knitting apparatus or in conjunction with other pile knitting or pile weaving apparatus.
  • a modified circular knitting machine having reciprocating needles and yarn bobbins which rotate circumferentially relative to these needles. Adjacent to one or more needles is located a lancette and various embodiments of the invention provide means for holding the lancettes in position.
  • One such means comprises a bearing mounted support interconnecting the lancette and the bobbin rotating portions of the machine. Such support fixes each lancette, relative to each other and prior to the knitting operation fixes the lancettes relative to the needles.
  • a major support for the lancettes will also be the interengagement of each lancette with the fabric as it is knitted.
  • ultrasonic transducer means are provided in conjunction with the aforementioned lancettes to produce when de-- sired a hooked pile suitable for interengagement with the looped pile otherwise produced by a circular knitting apparatus.
  • one upstanding leg of each loop is cut by ultrasonic knife means and simultaneously, the loops are subjected to ultrasonic vibration in order to thermally set the loops.
  • the material forming the loop and base fabric will be of nylon, polyester or other thermally setting yarns.
  • FIG. 1 is a vertical cross-section of portions of a circular knitting machine, loop forming apparatus and ultrasonic transducer cutting and setting means;
  • FIG. 2 is a fragmentary, enlarged cross-section of portions of the loop forming lancette of FIG. land of base portions of the transducer of FIG. 1;
  • FIG. 3 is a section taken in the direction of arrows 33 of FIG. 2.
  • FIGS. 4a-4f illustrate the knitting sequence of the knitting machine shown in FIG. 1;
  • FIGS. 5 and 6 illustrate knitting machine embodiments incorporating different lancette securing means.
  • FIG. 1 portions of a circular knitting machine 10 have been illustrated.
  • the machine 10 comprises a frame 11 which journals a drive shaft 12 connected to a driving pinion 13.
  • the pinion 13 drives a circular cogwheel 14 which mounts a bobbin shaft 16.
  • Bobbins l7 and 18 are secured to the shaft 16 upon plate 19.
  • the cogwheel 14 rotates in a horizontal plane, the shaft 16 and bobbins 17, 18 are carried about the circumference of the inner frame structure 11b.
  • a plurality of latch type needles 20 held within and reciprocably movable with respect to the inner frame 11b are a plurality of latch type needles 20.
  • the needles 20 are caused to reciprocate by means of cams 21 within cam support 21b as cogwheel 14 moves around inner frame element 11b.
  • Yarns 22 and 23 are fed respectively about yarn guides 24, 25 and 26 from bobbins 17 and 18 to yarn guides 25a and 26a respectively.
  • the yarn 22 forms the base fabric while the yarn 23 forms loops as will be seen.
  • the bobbin shaft 16 mounts a circular member 27 having a series of ball bearings 28.
  • another circular element 30 whose purpose is to provide support for a plurality of lancettes 31 secured thereto.
  • the lancettes 31 cooperate with the knitting cycle of individual needles 20 and with the movement of the yarns 22 and 23 to effect the knitting of a base fabric 32 and a series of loops 33 formed about the lancette 31. It will be seen that as the loops are formed, they engage about the lancette 31 providing additional support for the lancette whose main support is the bearing 28.
  • a lancette may be provided for each pair of needles but that there are other possible needle and lancette combinations, a lancette being used with one or several needles to form loops integral with a base fabric.
  • FIGS. 4a-4f illustrate the formation of base fabric and loops using the apparatus of FIG. 1.
  • the needle is at its starting position having just risen and during the course of such motion the latch 20a will be opened by the last stitch.
  • the needle has completed its rise and the stitches have fallen from the latch 20a to a stem 20b of the needle.
  • the needle has begun to descend and new yarns 23, 22 are introduced above and below the lancette 31 by the rotating bobbins.
  • FIG. 4d the needle continues to descend, both yarns are taken from the needle and the preceding stitch has closed the latch 20a.
  • the needle continues to descend and both new loops comprising yarns 23, 22 have formed stitches by passing through the preceding stitches.
  • the upper yarn 23 forms a loop 33 by passing around the lancette 31.
  • the needle has completed its descent and the new stitch is pulled through to its full length.
  • the yarn 23 will comprise a multifilament nylon and after the loops have been formed about the lancette 31, further treatment'may consist of a brushing or napping step to provide maximum disorientation and to facilitate engagement of hooks therein.
  • the present invention further provides for cutting the loops 33 when formed of a monofilament such as ny- Ion, polyester and other thermosetting yarns.
  • a monofilament such as ny- Ion, polyester and other thermosetting yarns.
  • the ultrasonic transducer 34 will be mounted by any convenient means in the position shown in FIG. 1.
  • the transducer may be a unitary ring shaped transducer as shown in the drawings, or it may be a transducer formed to have a ring-like configuration by placing a series of transducers end to end.
  • the base 34a of the transducer is formed as a series of extensions 340 which surround lancettes 31 on both sides thereof.
  • Loops 33 will be pressed into contact with upper sides of lancettes 31 by extensions 34c and will bow out of contact somewhat with the sides of the lancettes.
  • Knives 36 are bolted to the transducer 34, the ends 3611 of which extend slightly within a recess 31a of each lancette. As the loops 33 pass overa lancette 31, one side 3311 of each loop is cut by a knife end 36a which will leave a small space or gap 33b where the knife edge passes through the portion of the loop. By this means a series of hooks 38 will be formed.
  • the close proximity of the lancette 31 to the ends 34c of the transducer 34 and to the knife ends 36 cause the lancettes 31 to heat set the monofilament material of the loops 33 and hooks 38.
  • the hooks 38 though still flexible will become quite resilient and able to perform their function without permanent deformation. Due to the Proximity of the material ofthe base fabric layer 32 to the loops and the lancettes 31, some heat will be transferred to the base fabric.
  • FIGS. and 6 there have been shown schematically alternate arrangements of knitting apparatus including particular means for fixing the pile forming lancettes relative to the frame 61.
  • the pile yarn bobbins 40 and base fabric bobbins 41 are interconnected by suitable gearing 43, 44 with a drive shaft 45.
  • the latter is driven by pinion 46 interconnecting with pinion 47 powered by suitable drive means.
  • the bobbins 40 and 41 are mounted on cogwheels 48, 49 supported by plates 50, 51.
  • the latter are attached to a shaft 52 and are in bearing engagement with the cogwheels 48, 49 so as to permit relative rotation of these and the bobbins 40, 41 about the shaft 52.
  • a plurality of L-shaped lancettes 54 are attached at their upper ends 54a with a rigid cylindrical housing 56.
  • the housing and thus the lancettes 54 are rigidly attached by a collar 57 to the hollow shaft 52.
  • Needles 58 are opositioned each adjacent to a lancette 54 and vertically reciprocate relative thereto.
  • a camming and cam actuating means 59 causes reciprocation of the needles.
  • the needles 58 are held during the vertical movement within a stationary ring 60 which is rigidly secured to base 61. Ring 60 is connected to the shaft 52 to impart fixed rigidity thereto.
  • the apparatus of FIG. 6 also illustrates an alternate arrangement whereby loop pile fabric may be produced in accordance with circular knitting techniques.
  • a central stationary platform 65 is secured to a shaft 66 which journals a drive shaft 67.
  • the input power to the shaft 67 is indicated by reference numeral 68.
  • Attached to shaft 67 and rotatable therewith are a plurality of base and loop yarn bobbins 69 and 70.
  • Lancettes 71 are rigidly secured at their ends 71a to a housing 72 which is secured to the shaft 66 at 73.
  • the support for bobbin 69 is a housing 74 which further mounts needle actuating cam 75. Needles 76 are horizontally disposed and reciprocable with respect to platform 65 upon rotating movement of cam 75.
  • lancettes are embodied to provide the formation of a looped pile and base fabric.
  • the lancettes are stationary while the bobbins rotate relative thereto; however, the invention contemplates the possibility that the lancettes may be movable and the bobbins stationary.
  • a particular feature of the invention is the discovery that the lancettes will be held firmly in place once the knitting process has begun by engagement with the looped pile. This engagement for example prevents (in the embodiment of FIG. 1) rotating movement of the lancettes 31 which might tend to occur due to the frictional forces within bearing element 27. It is the discovery that the lancettes will be held quite securely by the fabric which permits the relatively simple design adaptation of FIG. 1.
  • the invention is further directed in a separate broad aspect to the processing of looped pile fabric to convert same into hooked pile.
  • the means and method employed are the use of ultrasonic vibrations simultaneously to set the yarn thermally and to cut loops to form hooks.
  • Apparatus for setting and cutting loops of a thermoplastic material upstanding from a base fabric of the same material comprising a lancette, means for passing said loops in a series over said lancette, transducer means surrounding said lancette in close juxtaposition thereto, knife means connected to said transducer means, said knife means being positioned to contact an upstanding leg portion of each loop as said loop passes over the lancette thereby causing said upstanding leg to be cut and said loop to be converted into a hook, said transducer means also simmultaneously causing said loops to be thermoset.
  • transducer means surrounds several lancettes and is placed close to said base fabric.
  • a method of cutting and heat setting a series of upstanding loops to form a hooked fastener element comprising passing said loops in a row over a lancette, and subjecting one upstanding leg of each loop to the cutting action of (a) an ultrasonic transducer element while simultaneously causing said transducer element (to agitate said lancette at ultrasonic frequencies in order) to set the material of said loops.
  • loops project from a base fabric of the same material as said loops.
  • a method of producing a fabric having a plurality of hook-like elements upstanding therefrom suitable for use as part of a hook and loop-type fastener comprising knitting by circular knitting techniques a base fabric layer and simultaneously knitting a sequential series of loops upstanding from said base fabric layer about a lancette, setting said loops by an ultrasonic transducer while the loops are around said lancette, and cutting at least some of said loops to form hooks.
  • thermoplastic material such as nylon upstanding from a base fabric of the same material comprising a lancette, means for passing said loops in a series over said lancette, and ultra-sonic transducer means surrounding said lancette in close relation thereto to cause said loops to be thermoset.
  • numeral 25a should have a lead line directed to the yarn guide as shown in the attached drawing.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Treatment Of Fiber Materials (AREA)
US3765193D 1970-06-12 1970-06-12 Method and apparatus for the circular knitting of hook and loop fastener elements Expired - Lifetime US3765193A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4566470A 1970-06-12 1970-06-12

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US3765193A true US3765193A (en) 1973-10-16

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US3765193D Expired - Lifetime US3765193A (en) 1970-06-12 1970-06-12 Method and apparatus for the circular knitting of hook and loop fastener elements

Country Status (9)

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US (1) US3765193A (enrdf_load_stackoverflow)
JP (1) JPS5032857B1 (enrdf_load_stackoverflow)
BE (1) BE768392A (enrdf_load_stackoverflow)
CA (1) CA949344A (enrdf_load_stackoverflow)
DE (1) DE2128923A1 (enrdf_load_stackoverflow)
FR (1) FR2096244A5 (enrdf_load_stackoverflow)
LU (1) LU63323A1 (enrdf_load_stackoverflow)
NL (1) NL7107798A (enrdf_load_stackoverflow)
ZA (1) ZA713480B (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3895489A (en) * 1971-07-01 1975-07-22 Norbert Waller Apparatus for producing a knitted fabric with projecting barbs
DE2852469A1 (de) * 1977-12-05 1979-06-07 Velcro Usa Maschenware fuer die bildung von flaechenreissverschlusshaelften sowie vorrichtung und verfahren zur herstellung dieser maschenware
US4548116A (en) * 1982-07-13 1985-10-22 Yoshida Kogyo K. K. Apparatus for producing hooks on loop-and-hook fasteners
US5079810A (en) * 1990-12-28 1992-01-14 E. I. Du Pont De Nemours And Company Ultrasonic cutting of fabric tufts to provide improved retention of tuft indentity during use
EP0689348A2 (en) 1994-05-28 1995-12-27 Kodak Limited Method and apparatus for enhancing an image data signal
US6298687B1 (en) * 1999-02-01 2001-10-09 Behr Gmbh & Co. Integrated collector and heat transfer structure unit
US20100116001A1 (en) * 2005-11-21 2010-05-13 Michael Starbuck Sueded knitted fabrics
US7757515B1 (en) * 2009-03-11 2010-07-20 Hbi Branded Apparel Enterprises, Llc Cut pile fabric and method of making same
WO2020012333A3 (en) * 2018-07-11 2020-03-05 3M Innovative Properties Company Knitted fabric for hook and loop fastener and method for manufacturing
US20210362398A1 (en) * 2015-03-16 2021-11-25 Gerald ROCHA Touch fasteners and methods of formation

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50141148A (enrdf_load_stackoverflow) * 1974-04-30 1975-11-13
JPS50137858U (enrdf_load_stackoverflow) * 1974-04-30 1975-11-13
JPS50147214U (enrdf_load_stackoverflow) * 1974-05-21 1975-12-06
JPS52147917U (enrdf_load_stackoverflow) * 1976-05-06 1977-11-09
JPS538756U (enrdf_load_stackoverflow) * 1976-07-08 1978-01-25
EP1013811A1 (en) * 1998-12-23 2000-06-28 Luigi Omodeo Zorini Process for manufacturing in crochet galloon machines ribbons for tear type quick-closing devices, and a crochet galloon machine for manufacturing said ribbons

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Publication number Priority date Publication date Assignee Title
US537748A (en) * 1895-04-16 Looping attachment for knitting-machines
US2485230A (en) * 1946-06-14 1949-10-18 Wolsey Ltd Treatment of nylon and other yarns
US2717437A (en) * 1951-10-22 1955-09-13 Velcro Sa Soulie Velvet type fabric and method of producing same
US2933908A (en) * 1957-04-17 1960-04-26 Fidelity Machine Company Inc Selvage clipper
US3015223A (en) * 1959-05-05 1962-01-02 Moore David Pelton Apparatus for and method of the heat treatment of thermoplastic high pile fabrics
US3083737A (en) * 1957-10-02 1963-04-02 Internat Velcro Company Apparatus for manufacturing separable fasteners
US3241337A (en) * 1961-10-30 1966-03-22 Ames Textile Corp Apparatus and method for knitting pile fabric
US3331220A (en) * 1965-04-26 1967-07-18 Singer Co Yarn trimming mechanisms
FR1539997A (fr) * 1966-08-29 1968-09-20 Continental Metal Trust Procédé et dispositif pour la fabrication de tissus à mailles à aspect duveteux
US3525653A (en) * 1969-08-13 1970-08-25 Ici Ltd Reduction of pilling of fabrics with ultrasonic energy
US3530687A (en) * 1966-08-29 1970-09-29 Int Knitlock Corp Method and apparatus for manufacturing knitted cloth having pile configuration
US3576690A (en) * 1969-08-01 1971-04-27 Gen Binding Corp Method and apparatus for sealing binding using ultrasonic or radio frequencies
US3586555A (en) * 1969-08-01 1971-06-22 Ultrasonic Systems Apparatus and method of continuously joining thermoplastic coated wires
US3586060A (en) * 1969-06-20 1971-06-22 American Velcro Inc Method and apparatus for making flexible strips of material having a pile of hook-shaped elements
US3640786A (en) * 1968-05-22 1972-02-08 Hercules Inc Pile fabric and method of making the same
US3654054A (en) * 1969-08-22 1972-04-04 Gottlieb Binder Holzgerlingen Knitted fabric with projecting barbs
US3673301A (en) * 1968-12-03 1972-06-27 Patrick Billarant Flexible bands fitted with hooks for the fabrication of separable fastening devices
US3674602A (en) * 1969-10-09 1972-07-04 Photocircuits Corp Apparatus for making wire scribed circuit boards

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US537748A (en) * 1895-04-16 Looping attachment for knitting-machines
US2485230A (en) * 1946-06-14 1949-10-18 Wolsey Ltd Treatment of nylon and other yarns
US2717437A (en) * 1951-10-22 1955-09-13 Velcro Sa Soulie Velvet type fabric and method of producing same
US2933908A (en) * 1957-04-17 1960-04-26 Fidelity Machine Company Inc Selvage clipper
US3083737A (en) * 1957-10-02 1963-04-02 Internat Velcro Company Apparatus for manufacturing separable fasteners
US3015223A (en) * 1959-05-05 1962-01-02 Moore David Pelton Apparatus for and method of the heat treatment of thermoplastic high pile fabrics
US3241337A (en) * 1961-10-30 1966-03-22 Ames Textile Corp Apparatus and method for knitting pile fabric
US3331220A (en) * 1965-04-26 1967-07-18 Singer Co Yarn trimming mechanisms
FR1539997A (fr) * 1966-08-29 1968-09-20 Continental Metal Trust Procédé et dispositif pour la fabrication de tissus à mailles à aspect duveteux
US3530687A (en) * 1966-08-29 1970-09-29 Int Knitlock Corp Method and apparatus for manufacturing knitted cloth having pile configuration
US3539436A (en) * 1966-08-29 1970-11-10 Int Knitlock Corp Knitted product having a material-engaging surface
US3640786A (en) * 1968-05-22 1972-02-08 Hercules Inc Pile fabric and method of making the same
US3673301A (en) * 1968-12-03 1972-06-27 Patrick Billarant Flexible bands fitted with hooks for the fabrication of separable fastening devices
US3586060A (en) * 1969-06-20 1971-06-22 American Velcro Inc Method and apparatus for making flexible strips of material having a pile of hook-shaped elements
US3576690A (en) * 1969-08-01 1971-04-27 Gen Binding Corp Method and apparatus for sealing binding using ultrasonic or radio frequencies
US3586555A (en) * 1969-08-01 1971-06-22 Ultrasonic Systems Apparatus and method of continuously joining thermoplastic coated wires
US3525653A (en) * 1969-08-13 1970-08-25 Ici Ltd Reduction of pilling of fabrics with ultrasonic energy
US3654054A (en) * 1969-08-22 1972-04-04 Gottlieb Binder Holzgerlingen Knitted fabric with projecting barbs
US3674602A (en) * 1969-10-09 1972-07-04 Photocircuits Corp Apparatus for making wire scribed circuit boards

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3895489A (en) * 1971-07-01 1975-07-22 Norbert Waller Apparatus for producing a knitted fabric with projecting barbs
DE2852469A1 (de) * 1977-12-05 1979-06-07 Velcro Usa Maschenware fuer die bildung von flaechenreissverschlusshaelften sowie vorrichtung und verfahren zur herstellung dieser maschenware
US4628709A (en) * 1977-12-05 1986-12-16 Actief N.V. Apparatus and method for producing knitted hook-type fastener material
US4548116A (en) * 1982-07-13 1985-10-22 Yoshida Kogyo K. K. Apparatus for producing hooks on loop-and-hook fasteners
US5079810A (en) * 1990-12-28 1992-01-14 E. I. Du Pont De Nemours And Company Ultrasonic cutting of fabric tufts to provide improved retention of tuft indentity during use
EP0689348A2 (en) 1994-05-28 1995-12-27 Kodak Limited Method and apparatus for enhancing an image data signal
US6298687B1 (en) * 1999-02-01 2001-10-09 Behr Gmbh & Co. Integrated collector and heat transfer structure unit
US20100116001A1 (en) * 2005-11-21 2010-05-13 Michael Starbuck Sueded knitted fabrics
US20100116000A1 (en) * 2005-11-21 2010-05-13 Michael Starbuck Needle for knitting sueded fabrics
US7854151B2 (en) 2005-11-21 2010-12-21 Hbi Branded Apparel Enterprises, Llc Needle for knitting sueded fabrics
US8006520B2 (en) 2005-11-21 2011-08-30 Hbi Branded Apparel Enterprises, Llc Sueded knitted fabrics
US7757515B1 (en) * 2009-03-11 2010-07-20 Hbi Branded Apparel Enterprises, Llc Cut pile fabric and method of making same
US20210362398A1 (en) * 2015-03-16 2021-11-25 Gerald ROCHA Touch fasteners and methods of formation
US11701812B2 (en) * 2015-03-16 2023-07-18 Soni-Form, Llc. Touch fasteners and methods of formation
WO2020012333A3 (en) * 2018-07-11 2020-03-05 3M Innovative Properties Company Knitted fabric for hook and loop fastener and method for manufacturing

Also Published As

Publication number Publication date
FR2096244A5 (enrdf_load_stackoverflow) 1972-02-11
BE768392A (fr) 1971-12-13
CA949344A (en) 1974-06-18
JPS5032857B1 (enrdf_load_stackoverflow) 1975-10-24
DE2128923A1 (de) 1971-12-16
LU63323A1 (enrdf_load_stackoverflow) 1972-03-20
ZA713480B (en) 1972-01-26
NL7107798A (enrdf_load_stackoverflow) 1971-12-14

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