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Publication numberUS3859150 A
Publication typeGrant
Publication dateJan 7, 1975
Filing dateMar 20, 1973
Priority dateMar 20, 1973
Also published asCA1022737A1, DE2412845A1
Publication numberUS 3859150 A, US 3859150A, US-A-3859150, US3859150 A, US3859150A
InventorsAmburg William F Van
Original AssigneeTextron Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method for installing slide fasteners
US 3859150 A
Abstract
An article having a slide fastener closure and formed of sheet material secured to a slide fastener to define flaps extending over the slide fastener and meeting at a center line aligned with interengaging elements of the slide fastener, the sheet material either being separated along the center line or having a scored tear line therealong to facilitate separating. A method of installing the slide fastener includes moving a deforming member to engage the sheet material, which is positioned over the slide fastener, and force the sheet material and the slide fastener against an anvil, the deforming member carrying spaced sealing protrusions securing the sheet material to the tape of the slide fastener and a centrally disposed scoring protrusion forming the scored tear line. Apparatus for installing the slide fastener includes the anvil, which has an elongate recess therein for positioning the slide fastener, and the deforming member.
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Description  (OCR text may contain errors)

Van Amburg Jan. 7, 1975 METHOD FOR INSTALLING SLIDE FASTENERS Inventor: William F. Van Amburg, Meadville,

Assignee: Textron Inc., Providence, R.1.

Filed: Mar. 20, 1973 Appl. No.: 343,059

US. Cl. 156/66, 24/205 R, 24/205.l5 R, 24/205.16 R, 36/50, 156/73, l56/93,

156/251, 156/268, 256/274, 161/48, 161/50 Int. Cl A41h 37/06 Field of Search 24/205 R, 205.16 R; 156/66, 73, 274, 93, 251, 268; 36/50;

References Cited UNITED STATES PATENTS Winterhalter 24/205.16 R Zobel 156/66 Wahl 156/66 X Primary ExaminerEdward G. Whitby [57] ABSTRACT An article having a slide fastener closure and formed of sheet material secured to a slide fastener to define flaps extending over the slide fastener and meeting at a center line aligned with interengaging elements of the slide fastener, the sheet material either being separated along the center line or having a scored tear line therealong to facilitate separating. A method of installing the slide fastener includes moving a deforming member to engage the sheet material, which is positioned over the slide fastener, and force the sheet material and the slide fastener against an anvil, the de forming member carrying spaced sealing protrusions securing the sheet material to the tape of the slide fastener and a centrally disposed scoring protrusion forming the scored tear line. Apparatus for installing the slide fastener includes the anvil, which has an elongate recess therein for positioning the slide fastener, and the deforming member.

9 Claims, 4 Drawing Figures PATENIED 3,859,150

sum 10F 2 METHOD FOR INSTALLING SLIDE FASTENERS BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention pertains to slide fasteners and, more particularly, to an article formed of sheet mate rial having a slide fastener closure and method and apparatus for installing the slide fastener.

2. Discussion of the Prior Art Articles formed of sheet material and having slide fastener closures have, in the past, been cut or severed prior to the installation of the slide fasteners therein and, therefore, have required precise alignment of the slide fastener with the opening formed by the cut. Articles formed of heat bondable sheet material, such as boots and the like, are desirably produced with a minimum of manual labor and in as simple a manner as possible in that the bonding characteristics of the sheet material permit portions ofthe article to be secured together by heat sealing to facilitate automatic manufacture. Thus, the cutting or severing of the sheet material prior to installation of the slide fastener is particularly undesirable in the manufacture of articles of heat bondable material not only due to the precision required for alignment of the slide fastener with the opening formed by the cut but further due to the additional'cutting operation required, which cutting operation is normally performed by hand and adds undesirable cost and time to the manufacture of such articles.

In the manufacture of boots and the like, the sheet material is normally cut to installation of the slide fas tener, as exemplified by US. Pat. Nos. 1,739,612, 1,834,551, 1,834,582 and 2,287,878; and, since boots are conventionally formed of heat bondable sheet material, particularly slush molded boots, prior art methods of manufacturing boots .have suffered from the above-mentioned disadvantages attendant to cutting of the sheet material prior to installation of the slide fasteners. Furthermore, conventionally manufactured boots have the disadvantage that the slide fasteners are exposed to mud, moisture and abrasion from the rough conditions to which boots are subjected and, therefore, suffer from reduced operational reliability. Attempts to install the slide fasteners before cutting of the sheet material have not provided acceptable results in that, in the past, such prior installation of slide fasteners has left the slide fasteners exposed; and therefore, the slide fasteners have suffered from increased wear and decreased operational reliability.

SUMMARY OF THE INVENTION The present invention is generally summarized in a method of installing a slide fastener on sheet material including the steps of positioning the slide fastener and the sheet material between an anvil and a deforming member carrying spaced sealing protrusions and a scoring protrusion centrally disposed between the spaced sealing protrusions; and moving the deforming member relative to the anvil to engage the sheet material and compress the sheet material and the slide fastener between the anvil and the deforming member such that the sealing protrusions secure the slide fastener to the sheet material and the scoring protrusion forms a tear line in the sheet material along the slide fastener. The present invention is further generally summarized in apparatus for installing a slide fastener on sheet material comprising support means for supporting the slide fastener and the sheet material in superposed relation; and deforming means aligned with the support means and movable relative to the support means to compress the slide fastener and the sheet material, the deforming means carrying sealing protrusion means for securing the slide fastener to the sheet material and scoring protrusion means for forming a weakened tear line in the sheet material over the slide fastener. The article having a slide fastener closure according to the present invention is generally summarized as including a slide fastener having interengaging means centrally disposed therealong; and a sheet material secured to the slide fastener to define flaps extending over the slide fastener and meeting at a center line aligned with the interengaging means, the sheet material being weakened along the center line to form a frangible tear line.

A primary object of the present invention is to overcome the above-mentioned disadvantages of the prior art by installing a slide fastener on sheet material without requiring a preliminary cutting step to form an article of sheet material having a slide fastener closure with the sheet material defining flaps extending over the slide fastener and meeting at a frangible center tear line aligned with the interengaging elements of the slide fastener.

Another object of the present invention is to install a slide fastener on sheet material without first cutting the sheet material to form an opening to be closed by the slide fastener.

A further object of the present invention is to provide apparatus for installing a slide fastener on sheet material and simultaneously forming a line for separating the sheet material.

The present invention has an additional object in forming an article having a slide fastener closure with a tear line in sheet material covering the slide fastener, the tear line being weakened to facilitate separating the sheet material by breaking the sheet material open along the tear line.

Yet another object of the present invention is to eliminate a separate cutting operation in the production of an article having a slide fastener closure.

A further object of the present invention is to construct apparatus for producing an article having a slide fastener closure with a tear line in sheet material covering the slide fastener.

Some of the advantages of the present invention over the prior art are that no separate cutting operation is required, precise alignment of the slide fastener for installation on the sheet material is obviated, production time and cost are reduced, and the sheet material need not be opened along the tear line until ultimate use of the article.

Other objects and advantages of the present invention will become apparent from the following description of the preferred embodiment taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. I is a broken perspective of an article having a slide fastener closure according to the present invention.

FIG. 2 is an exploded section of apparatus according to the present invention prior to installation of the slide fastener.

FIG. 3 is a section of the apparatus of FIG. 2 as the slide fastener is installed.

FIG. 4 is a section of the article of FIG. 1 taken along line 4-4.

DESCRIPTION OF THE PREFERRED EMBODIMENT An article 10 having a slide fastener closure according to the present invention is illustrated in FIG. 1 and is formed basically of a sheet of heat bondable material 12, such as vinyl and the like utilized to form boots and similar articles, and a slide fastener 14 sandwiched between the sheet material 12 and a strip of heat bondable material 16 acting as a shield orliner for the slide fastener. The slide fastener 14 may be of any suitable construction and, as shown in FIGS. 2, 3 and 4, conventionally is formed of a pair of tapes l8 and 20, each of which carries interengaging elements 22 along its inner edge, and a slider 24 movable along the interengaging elements to control interlocking thereof.

The sheet material 12 has an aperture 26 therein of a size to accommodate the slider 24 and positioned adjacent top stops, not shown, of the slide fastener to receive the slider when the slide fastener 14 is closed. The sheet material 12, slide fastener 14 and liner strip 16 are secured together along a pair of spaced bonding tracks 28 and 30 which can be joined at a rounded end 31 adjacent the closed end of the slide fastener to have a U-shaped configuration. The bonding tracks 28 and 30 are each formed of a pair of elongate recesses in the sheet material 12 as best shown in FIG. 4. The liner strip 16 can be vinyl or the like; so, if desired, the liner strip 16 can be a fabric such as felt stitched to the article 10.

The sheet material 12 covering the slide fastener 14 forms a pair of flaps 32 and 34 extending from bonding tracks 28 and 30, respectively, and meeting at a center line 36 aligned with the interengaging elements 22 of the slide fastener. Center line 36 is a weakened elongate indentation in sheet material 12 forming a frangible tear line from the top of the article 10 through the aperture 26 and along the interengaging elements 22 to the closed end of the slide fastener 14. The sheet material can be easily separated along the tear line 36 to form an opening for the article 10 as illustrated at 38 in FIG. 1.

Apparatus for installing the slide fastener 14 on the sheet material 12 is illustrated in FIGS. 2 and 3 and includes a support member or anvil 40 having an elongate positioning or locating recess 42 formed therein, recess 42 having upright side walls 44 and downwardly sloping surfaces 46 connecting the side walls 44 with a central channel 48. The width of recess 42 between side walls 44 corresponds substantially to the width of slide fastener 12 and liner strip 16, and channel 48 is ofa size to receive the interengaging elements 22 of the slide fastener. An elongate deforming member 50 is disposed above anvil 40 centrally aligned with recess 42 and carries spaced sealing protrusions 52 and 54, each of which is formed of a pair of flat teeth having surfaces inclined to correspond with the incline of sloping surfaces 46 of recess 42 to form the double-recess bonding tracks 28 and'30. The sealing protrusions 52 and 54 can be joined to formed rounded end 31 for the bonding tracks. A notch 56 is centrally disposed between sealing protrusions 52 and 54 to receive and adjustably position a scoring protrusion 58 having a downwardly depending acute angled edge. The edge of scoring protrusion 58 can define a continuous straight line or a series of alternately extended and relieved portions, not shown, to form a tear line having a series of alternating relatively weaker and stronger portions. Suitable apparatus for controlling relative movement between the anvil 40 and the deforming member and for positioning the sheet material 12, slide fastener 14 and liner strip 16 between the anvil and the deforming member is well known and is not shown in the drawings or described herein for the sake of brevity.

In accordance with the method of the present invention, the slide fastener 14 and the sheet material 12, and the liner strip 16 ifdesired, are positioned in superposed relation between the anvil 40 and the deforming member 50, and the deforming member 50 is moved relative to the anvil 40 to engage the sheet material 12 and compress the sheet material and the slide fastener between the anvil and the deforming member to form bonding tracks 28 and 30 and central tear line 36. While the sheet material 12, slide fastener 14 and liner strip 16 are illustrated in spaced relation in FIG. 2, in practice the liner strip 16 will be supported in recess 42 of the anvil 40 with the slide fastener protrusion overlying the same while the sheet material 12 is placed flat on the anvil 40 covering the recess 42. The sealing protrusions 52 and 54 are spaced so as to be received in recess 42, and scoring protrusion 58 extends below the sealing protrusions such that when the deforming member 50 is moved to compress the sheet material, the slide fastener and the liner strip, as shown in FIG. 3, the sealing protrusions 52 and 54 cooperate with sloping surfaces 46 to form bonding tracks 28 and 30, respectively. Interengaging elements 22 are received in channel 48, and scoring protrustion 58 substantially weakens the sheet material 12 along center line 36 directly above the interengaging elements to form the tear line. As best shown in FIG. 4, the tear line 36 is weakened not only from scoring along its outer surface by protrusion 58 but also along its inner surface due to contact with the interengaging elements 22.

The bonding process uses heat to secure the tapes l8 and 20 of the slide fastener and the liner strip 16 to the sheet material 12; however, any suitable bonding energy can be utilized, such as ultrasonic vibrations.

The heat generating system may be of the dielectric type wherein heat is generated in a high resistance dielectric having low resistance metal electrodes at either end, with the dielectric formed of the components of the article 10 and the electrodes formed by the deforming member 50 and the anvil 40 such that heat is generated by the deforming member and applied to the sheet material.

Simultaneous with the depressing of the sheet material 12 into the recess 42 and the compression of the sheet material between the sealing protrusions 52 and 54 and the sloping surfaces 46 a compressive force is applied to the sheet material by the scoring protrusion 58 which has been pre-set in a fixed position in the notch 56 in accordance with the thicknesses, sizes and shapes of the liner strip 16, the slide fastener 14 and the sheet material 12. The compressive force is applied in a straight line which is well defineddue to the sharp angle forming the edge of scoring protrusion 58 applying the force. During application of force from the scoring protrusion 58, the interengaging elements 22 of the slide fastener and the liner strip 16 are depressed downward against the bottom of the channel 48 in the locating recess 42. The interengaging elements 22 are thus firmly supported and act as an anvil for the scoring protrusion 58 during the formation of the tear line 36.

After heat has been applied for a suitable time to effect a good bond, the deforming member 50 is moved away from the anvil 40, and sheet material 12 will resume its former flat shape due to the presence of locat ing recess 42 which is shaped to compensate for the thicknesses of the components placed therein.

In the event that a heat bondable liner strip is not used in the article 10, a fabric liner may be fastened around the slide fastener after the slide fastener has been secured to the sheet material. The fabric liner may be fastened by stitching, using single needle or double needle sewing machines having blades mounted on the throat plate of the sewing machine and trailing the sewing needles for slitting the fabric liner as it is being stitch fastened.

After the installation of the slide fastener has been completed, the tear line 36 may be readily severed or broken open by merely inserting a finger on any suitable implement in the aperture 26 in the sheet material 12 and applying a slight lifting force to the underside of the tear line 36 while moving the finger or implement along the tear line. However, when the installed slide fastener has a slider 24, the slight upward force required to break open the tear line may be applied by the first use of the slider after the bonding process has been completed. The tear line 36 may remain intact until all remaining fabrication processes have been completed on the sheet material 12 to form it into a garment, such as a boot or the like; and, thereafter, such as during an inspection operation of the finished product, the tear line may finally be opened as discussed above.

The present invention has a number of distinct advantages, the most obvious advantage being the elimination of the time-consuming step of cutting sheet material which is to have a slide fastener installed thereon. The elimination of this cutting operation results in still additional time saved during fabrication by eliminating alignment ofthe slide fastener to coincide with the preliminary cut in the sheet material before effecting the bonding operation. In addition, the use of the locating recess 42 with channel 48 at the bottom thereof enables the sheet material to retain a flat and even appearance after the slide fastener has been installed thereon as shown in FIG. 4 thereby resulting in a more commercially desirable product.

Inasmuch as the present invention is subject to many variations, modifications and changes in detail, it is intended that all matter contained in the foregoing description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

What is claimed is:

1. A method ofinstalling a slide fastener on sheet material comprising the steps of positioning the slide fastener and the sheet material between an anvil and a deforming member carrying spaced sealing protrusions and a scoring protrusion centrally disposed between the spaced sealing protrusions,

moving the deforming member relative to the anvil to engage the sheet material and compress the sheet material and the slide fastener between the anvil and the deforming member, and

securing the slide fastener to the sheet material between the anvil and the sealing protrusions of the deforming member as the sealing protrusions engage the sheet material during the moving of the deforming member relative to the anvil while at the same time forming a tear line along the sheet material between the sealing protrusions of the deforming member as the scoring protrusion of the deforming member engages the sheet material during the moving of the deforming member relative to the anvil.

2. A method of installing a slide fastener as claimed in claim 1 wherein the sheet material is a heat bondable type and said step of moving the deforming member includes applying heat to the sheet material from the deforming member to heat bond the slide fastener to the sheet material.

3. A method of installing a slide fastener as claimed in claim 1 wherein said positioning step includes positioning a liner strip of heat bondable material on a side of the slide fastener opposite the sheet material, and wherein siad step of moving the deforming member includes heat bonding the liner strip and the slide fastener to the sheet material.

4. A method of installing a slide fastener as claimed in claim 1 and further comprising the step of applying a force to move the sheet material away from the slide fastener and break the-sheet material open along the tear line.

5. A method of installing a slide fastener as claimed in claim 3 and further comprising the steps of stitching the liner strip around the slide fastener and slitting the liner strip during stitching.

6. A method of installing a slide fastener as claimed in claim 1 and furhter comprising the step of separating the sheet material along the tear line.

7. A method of installing a slide fastener as claimed in claim 6 wherein said separating step includes applying a force to move the sheet material away from the slide fastener and break the sheet material open along the tear line.

8. A method of installing a slide fastener as claimed in claim 6 wherein the slide fastener includes a slider and wherein said separating step includes moving the slider to open the slide fastener and apply a force to move the sheet material away from the slide fastener and break open the sheet material along the tear line.

9. A method of installing a slide fastener as claimed in claim 6 wherein said positioning step includes positioning a liner strip of heat bondable material on a side of the slide fastener opposite the sheet material, and wherein said step of moving the deforming member includes heat bonding the liner strip and the slide fastener to the sheet material.

l= =l =l

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2203694 *Feb 15, 1937Jun 11, 1940Whitehall Patents CorpSeparable fastener element and the method of making the same
US2583035 *Jan 11, 1949Jan 22, 1952Winterhalter MartinSliding clasp fastener
US2674559 *May 4, 1949Apr 6, 1954Zobel JosephMethod of attaching textile tapes of slide fastener elements to plastic sheets
US3103728 *Nov 25, 1957Sep 17, 1963Wahl BrothersTechnique for assembling slide fasteners
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4025374 *Jan 17, 1975May 24, 1977Ries Gmbh BekleidungsverschlussfabrikMethod for producing closing members for supporting hooks or eyes
US4153489 *Aug 26, 1977May 8, 1979Textron Inc.Slide fastener chain with wide gap and method and apparatus for manufacture
US4161420 *Jun 14, 1977Jul 17, 1979Cavitron CorporationWelding
US4256529 *Jan 5, 1979Mar 17, 1981Cavitron CorporationUltrasonic apparatus for manufacturing brassiere tapes
US4304615 *Feb 8, 1980Dec 8, 1981Minigrip, Inc.Method of and means for producing plastic bags having separable plastic fasteners
US4308644 *Dec 14, 1978Jan 5, 1982Brown Alexander MSealing zipper
US4327470 *Jul 17, 1980May 4, 1982Talon, Inc.Method of making a slide fastener installation
US4579022 *Oct 7, 1983Apr 1, 1986Fujikura Cable Works, Ltd.Making process of a die for stamping out patterns
US5024537 *Jan 8, 1990Jun 18, 1991Zip-Pak IncorporatedTape carried pre-cut zipper
US6694704 *Aug 8, 2000Feb 24, 2004Illinois Tool Works Inc.Process and apparatus for forming packaging bags with a fastener
US6936121 *Apr 9, 2003Aug 30, 2005Riri S.A.Method of sealing the join between a zip and a garment with a lining
US6983574 *Aug 22, 2003Jan 10, 2006Illinois Tool Works IncProcess and apparatus for forming packaging bags with a fastener
US7191497Jun 21, 2005Mar 20, 2007Crelux Holding SaAssembly of waterproof zip and tapes
US7200900 *Jun 18, 2004Apr 10, 2007Salomon S.A.Article having a closure system
EP2550881A1 *Jul 27, 2012Jan 30, 2013Ventura SRL Con Unico SocioEquipment to apply a zipper to an article and method to apply a zipper to an article
Classifications
U.S. Classification156/66, 156/73.1, 156/274.6, 156/73.3, 36/50.1, 156/268, 156/93, 156/251
International ClassificationA44B19/34, A41H37/06, A43D21/00, A44B19/40, B29C65/74, A44B19/42, A44B19/32, B29C65/04, B29C65/00, A44B19/00
Cooperative ClassificationB29C65/745, B29C66/4722, B29C65/04, B29C66/80, A44B19/42, A41H37/06, B29L2031/505, B29L2005/00
European ClassificationB29C66/4722, B29C66/80, B29C65/04, B29C65/745, A44B19/42, A41H37/06
Legal Events
DateCodeEventDescription
Aug 28, 1986ASAssignment
Owner name: CONTINENTAL ILLINOIS NATIONAL BANK AND TRUST COMPA
Free format text: SECURITY INTEREST;ASSIGNOR:TALON, INC., A CORP OF DE.;REEL/FRAME:004604/0467
Effective date: 19860827
Jul 14, 1981ASAssignment
Owner name: TALON, INC., 626 ARCH ST. MEADVILLE, PA. A CORP. O
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:TEXTRON, INC.;REEL/FRAME:003933/0130
Effective date: 19810710