US3887675A - Method for making slideless fastener - Google Patents

Method for making slideless fastener Download PDF

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Publication number
US3887675A
US3887675A US378897A US37889773A US3887675A US 3887675 A US3887675 A US 3887675A US 378897 A US378897 A US 378897A US 37889773 A US37889773 A US 37889773A US 3887675 A US3887675 A US 3887675A
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United States
Prior art keywords
tape
cuts
row
tongues
fastening element
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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US378897A
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English (en)
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Toshiaki Takagi
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Individual
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Individual
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    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/10—Slide fasteners with a one-piece interlocking member on each stringer tape
    • A44B19/14—Interlocking member formed by a profiled or castellated edge
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/10—Slide fasteners with a one-piece interlocking member on each stringer tape
    • A44B19/12—Interlocking member in the shape of a continuous helix
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/25—Zipper or required component thereof
    • Y10T24/2518—Zipper or required component thereof having coiled or bent continuous wire interlocking surface
    • Y10T24/253—Zipper or required component thereof having coiled or bent continuous wire interlocking surface with stringer tape having distinctive property [e.g., heat sensitive]
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Definitions

  • ABSTRACT A method for making a slideless or slidefree fastener.
  • the steps include forming first and second rows of cuts in a tape or band made of resilient material, the cuts being preferably arcuate or semicircular in shape, though not limited thereto, the cuts in each row being spaced a predetermined distance apart, the cuts in one row being paired in reverse with respect to those in the other, rows of tongues being formed by bending up the cut-out portion of the band or tape then heat-setting the same, forming a third row of cuts between said first and second rows, the cuts in said third row being a straight line but at such an angle as to join.
  • the openings in the tape or band-like fastening element so produced can be closed by a spiral fastening element made by sewing a resilient monofilament formed into a spiral onto a band or tape.
  • the slideless or slide-free fastener produced by the foregoing method is joinable with sheet material and is also disclosed.
  • the present invention relates to a method for making fastener elements and a fastener coupling these elements, and in particular, to a method for making slideless or slide-free fastener elements by a simple and rapid process and a slideless fastener product to be used without requiring assembling or any of the operations required in using the conventional slider unit.
  • the conventional slide fastener includes a plurality of identical elements along the opposing edges of two strips to be joined and a slider to slidably engage or disengage each of the elements so as to open and close the fastener.
  • Fasteners of this slider or zip type have many disadvantages.
  • the process for making them is complex, the fastener itself is relatively heavy in weight, the fastener often becomes entirely unusable when one or more elements on one strip comes off the fibrous tape, it wears out quickly and grows bulky along the place where the slider unit is mounted.
  • the above mentioned disadvantages of the known types including zip fasteners and tapeless slide fasteners result mainly from the necessity of assembling or incorporating a slider with each fastener.
  • the main purpose of the present invention is therefore to provide a method for making slideless fastener elements and a novel and an economical slideless fastener produced thereby which is free from the above mentioned drawbacks. Said method makes it possible to mass produce very rapidly and accurately slideless fastener elements which are instantly and easily engaged and disengaged, even if part of one element in the opposite fastening element is loose or is damaged or mismeshed.
  • the present invention relates to a method of making a slideless fastener and the product made thereby, including the steps of manufacturing a tape or band-like fastening element to be engaged with each other and a spiral or coiled fastening element.
  • the first step in producing a tape or band-like fastening element includes making rows of at least first and second cuts on a resilient tape or strip material like plastic film. The cuts are substantially semi-circular or arcuate and are spaced longitudinally at predetermined intervals. The cuts in one row are paired and oriented in the reverse direction with respect to those in the other.
  • the second step in making the tape-like fastening element includes forming a series of tongues on one side of the tape material by bending the cut-out portion of the tape up or down and then heat-setting the same.
  • the third step includes cutting or forming a third row of cuts between the first and second rows, the cuts in said third row being a straight line but at such an angle as to join the closest ends of each pair of cuts in said first and second rows to form a row of openings.
  • the openings in the tape-like fastening elements are engageable with a spiral fastening element, which will be described later.
  • the fourth steps includes making a spiral fastening element to be meshed with the tape-like fastening element by sewing a resilient monofilament spirally onto a fibrous tape longitudinally thereof.
  • FIG. 1 is an elevational view, partly fragmented, of the fastener produced according to the present invention secured to a cloth.
  • FIG. 2 is a cross sectional view of the fastener shown in FIG. 1.
  • FIGS. 3 and 4 are respectively front and back views of the slideless fastener elements made by the present invention.
  • FIG. 5 is a partial front view of the spiral fastening element in the process of being made.
  • FIG. 6 is a cross sectional view of the spiral fastening element shown in FIG. 5.
  • FIG. 7 is a sectional view of the spiral fastening element sewn onto a fibrous tape or strip.
  • FIGS. 8 13 illustrate diagrammatically and in perspective and cross-section the steps in the process for making the tape-like fastening element according to the present invention.
  • FIG. 8 is illustrated the punched unbent strip.
  • flaps have been bent out of the plane of the strip.
  • FIGS. 10 and 13 show the strip with bent-up flaps and with slits between adjoining apertures in the strip before the opposite edges of the strip have been shifted.
  • FIG. 11(a) and 11 (b) show the strip after the shift.
  • FIGS. 12 (a) and 12 (b) show the strip after the sift and after the edges have been bent out of the original plane.
  • tape-like fastening element A is made of a resilient, half-rigid plastic or synthetic resin tape designated by the number 1.
  • the elongated resilient tape element is provided, as is best shown in FIG. 8, with pairs of oppositely arranged semi-circular cuts 2 and 3 spaced longitudinally in a predetermined spaced relationship on the tape by cutting with a roller type cutter. It is noted that these cuts may be in shapes other than semi-circular.
  • the rows of tongues 4 and 5 are formed by bending the cut-out portions 2 and 3 of the tape 1 up or down, and the portion between the closest ends of each pair of cuts in said rows of cuts 2 and 3 is provided with another cut 6 to provide a substantially S-shaped cut therein.
  • the cuts in the row of cuts between rows 2 and 3 are each a short straight line but at such an angle as to join the closest ends of each pair of cuts in cuts 2 and 3 to form a series of openings 7 for receiving a companion element, said openings being shaped like an elongated S.
  • the tape-like fastening element made by means of the present invention includes a resilient tape in which engaging openings 7 are spaced in a predetermined relationship therein.
  • the initial step in making fastening element A is to make rows of paired cuts on the tape 1 as shown in FIG. 8 using a roller type cutter with cutting edges mounted on the periphery of the roller.
  • the tongues 4 and extending from each pair of cuts 2 and 3 are formed by bending the semi-circular cut-out portion upward or downward so that the bent out tongues 4 and 5 are at a slight angle to the longitudinal direction of the tape 1.
  • a toothed roller may be used which can be securely contact and press the portion between the tongues 4 and 5, as shown in FIG. 9.
  • the cuts in the third row of cuts, the row between the first and second rows of cuts, are formed in a straight line but at such an angle as to join the closest ends of each pair of cuts on the tape by using a similar roller type cutter, again as seen in FIG. 10.
  • the tongues on the tape 1 are thermally set by passing the tape through a heater the temperature of which is high enough to heat set the tongues to prevent them from returning to their original state, but not so high as to thermally degrade the resin.
  • the short cuts 6 between the closest ends of each pair of the cuts 2 and 3 are formed to interconnect the cuts 2 and 3 with each other.
  • a roller type cutting device on which is mounted a series of cutting edges may be used to form or cut the cuts 6 .
  • the tape 1 having the interconnected rows of cuts has the opposite edges longitudinally pulled in opposite directions, a shown by the arrow, by passing the tongues through the gap between the two rollers g which exert a lateral force on the tongues 4 and 5 to twist the tongues so as to reduce the angle between the tongues 4 and 5 with respect to the longitudinal axis (FIGS. 11a and 11b). This distorts the edges of tape 8 lying along cuts 6 into the openings left by tongues 4 and 5.
  • the remaining flat-side portions of the tape are turned upwardly and pressed inwardly along the rows of tongues 4 and 5 by passing the tape through the gap between two rollers g, which also presses the tongues inwardly, as shown in FIGS. 12a and 12b.
  • the pressure imposed on the tongues 4 and 5 and the remaining flat-side portions urges simultaneously each row of the tongues and the intermediate portion between the tongures 4 and 5 to raise slightly upwardly.
  • the flat-side portions of the tape which is resilient, can shift longitudinally and spread open laterally in opposite directions, as shown by the arrows, to their substantially original state so as to open the cuts 6 between the openings left by the bending up of tongues 4 and 5, due to the resiliency of the tape material.
  • the paired cuts 2 and 3 and transverse cuts 6 thereacross are opened completely to form the openings or holes 7 in a row as shown in FIG. 13 with a longitudinal bending between the tongues 4 and 5 and a slight bend across transversely adjacent tongues of the tape-like fastening element A.
  • the resulting tape-like fastening element is thermally set, with the openings 7 securing or receiving the companion spiral element so as to engage them.
  • a resilient monofilament of half-rigid synthetic resin as the companion fastener element of the tapelike fastening element A, especially in the form of a single spiral element B which can easily be produced employing the process as shown in FIGS. 5 and 6.
  • the device for a similar process has been disclosed in Japanese Pat. Publication No. 40933/1970.
  • the two filaments 9 of circular section are wound on a bar 10 of a larger section, each filament turn by turn and then each of the resulting coiled filaments 9 is subjected to twisting by turning clockwise.
  • the resulting filaments twisted as above are then thermally set to form a coiled element respectively and further the bar 10 will be removed so as to separate the two spiral elements B.
  • the companion element B made by the above process has a less inclined or flat portion along its pitch so as to give the slightly elliptically engaging member 11 having a cross-section deformed for engaging with the associated opening 7 of the tape-like fastening element A.
  • said tape-like fastening element A is sewn onto the tape 12 so as to be secured along both side portions near the engaging openings 7 with appropriately spaced stitches 13 enabling the tape 12 to cover the curved face of tape 1 over the tongues 4 and 5 both of which are assumed to be protruding through the back of the element A.
  • the element B is similarly secured onto the tape 14 having the portion 15 of substantially the same width of weft while it may be unnecessary to integrate warp at all.
  • the portion 11 of the companion element B in use is secured on the portion 15 of cloth and the like without substantial inclination so that as shown in FIG. 7 the tape 14 extends in front of the bend even if the needle 16 is likely to pierce the tape 14 in sewing enabling the width of the weft portion 15 to be narrow such that the spiral element B is fixed on the tape 14 without coming out.
  • the above fastener elements are preferably thermally set with the openings 7 in the element A receiving the engaging portion 11 of the element B in the position occupied when the element A secured on the tape 12 is overlapping the companion element B fixed on the tape 14.
  • the receiving openings 7 and the engaging portion 11 tend to mesh more snugly and orderly than in a conventional fastener.
  • the elements A and B readily engage and disengage without a conventional slider unit.
  • said two elements are easily engaged while by pulling an appropriate part of either of the engaged elements, they are easily disengaged.
  • the elements A and B are engageable with one touch by pressing them against even a soft portion of the human body with the hand or finger (fingers); that is the elements A and B will be bent to open the opening or holes 7 thereby enabling the tongues 4 and 5 to engage with the engaging portion 11 of the spiral element B. If the pressure on the position of engagement of elements A and B is released, tongues 4 and 5, which are slightly deformed while under the pressure, return to their original protruding state and engage with the engaging portions 11 of element B.
  • a slideless fastener which includes a tape-like fastening element adapted to be mounted on one part to be fastened and cooperable with a spiral fastening element adapted to be mounted on the other part to be fastened, the steps of making said tape-like fastening element comprising:
  • first and second rows of cuts longitudinally arranged at predetermined intervals along a resilient tape of thermally settable material, the cuts in each row being substantially semi-circular in shape and the cuts in one row being paired with and oriented in the reverse direction with respect to those in the other;

Landscapes

  • Slide Fasteners (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
US378897A 1972-07-27 1973-07-13 Method for making slideless fastener Expired - Lifetime US3887675A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47076148A JPS5243142B2 (da) 1972-07-27 1972-07-27

Publications (1)

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US3887675A true US3887675A (en) 1975-06-03

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US378897A Expired - Lifetime US3887675A (en) 1972-07-27 1973-07-13 Method for making slideless fastener

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US (1) US3887675A (da)
JP (1) JPS5243142B2 (da)
AT (1) ATA652473A (da)
BE (1) BE802859A (da)
CA (1) CA992730A (da)
CH (1) CH559015A5 (da)
DE (1) DE2338278A1 (da)
DK (1) DK131657C (da)
FR (1) FR2194554B1 (da)
IT (1) IT991895B (da)
NL (1) NL7310458A (da)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2629911A (en) * 1947-09-05 1953-03-03 Ideco Inc Slide fastener
US3462805A (en) * 1966-10-06 1969-08-26 Sverre Quisling Integral fastener

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2629911A (en) * 1947-09-05 1953-03-03 Ideco Inc Slide fastener
US3462805A (en) * 1966-10-06 1969-08-26 Sverre Quisling Integral fastener

Also Published As

Publication number Publication date
CA992730A (en) 1976-07-13
DE2338278A1 (de) 1974-02-14
BE802859A (fr) 1973-11-16
DK131657B (da) 1975-08-18
FR2194554B1 (da) 1976-11-12
FR2194554A1 (da) 1974-03-01
ATA652473A (de) 1976-01-15
DK131657C (da) 1976-01-19
JPS4932743A (da) 1974-03-26
NL7310458A (da) 1974-01-29
CH559015A5 (da) 1975-02-28
JPS5243142B2 (da) 1977-10-28
IT991895B (it) 1975-08-30

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