Buckles – buttons – clasps – etc. – Zipper or required component thereof – Having coiled or bent continuous wire interlocking surface
Reexamination Certificate
2000-12-26
2003-02-11
Sakran, Victor (Department: 3677)
Buckles, buttons, clasps, etc.
Zipper or required component thereof
Having coiled or bent continuous wire interlocking surface
C024S389000, C024S397000, C024S398000
Reexamination Certificate
active
06516499
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an abrasion resistant linear slide fastener and a manufacturing method thereof, wherein coil-like fastener element row formed by winding thermoplastic resin mono-filament or zigzag-like fastener element row formed by bending mono-filament in zigzag shape is attached to a side edge of fastener tape with multi-filament attachment yarn and thermoplastic resin or thermo-setting resin is applied to this attachment yarn and made to permeate into the yarn and harden.
2. Description of the Related Art
According to a conventional linear slide fastener disclosed in Japanese Utility Model Publication No. 51-4825, as shown in
FIG. 26
, a coil-like fastener element row
1
′ is formed by winding thermoplastic resin mono-filament in the shape of a coil on a side edge of a fastener tape
10
′, and belt-like thermoplastic resin material
23
′ having a melting point lower than that of the coil-like fastener element is overlaid on a top of the coil-like fastener element row
1
′. Then, this thermoplastic resin material
23
′ and the coil- like fastener element row
1
′ are sewed with a sewing yarn
12
′ or the coil-like fastener element is sewed with the thermoplastic resin filament applied to the sewing yarn. Then, the thermoplastic resin material
23
′ or sewing yarn
12
′ is heated under pressure, so that the thermoplastic resin is melted and then permeates into the sewing yarn
12
′ and hardens. Consequently, the linear slide fastener, in which a convex sewing yarn swollen portion
28
′ is formed continuously with a thickness serving as a guide of the slider, is produced.
In the linear slide fastener shown In
FIG. 26
described above, the belt-like thermoplastic resin material is overlaid on the top of the coil-like fastener element and sewed with a sewing yarn. Alternatively, thermoplastic resin filament is applied to the sewing yarn and then the coil-like fastener element is sewed. After that, the belt-like thermoplastic resin material or thermoplastic resin filament is heated under pressure so as to be melted, so that a convex swollen portion, in which the sewing yarn is sealed, is formed. Therefore, the swollen portion is rigid, so that flexibility becomes short. Thus, this fastener stringer has such a problem that a sliding resistance of its slider is so high that the slider cannot be operated smoothly.
SUMMARY OF THE INVENTION
The present invention has been achieved in views of the above described problems. It is an object of an aspect of the present invention to provide a linear slide fastener capable of maintaining a stabilized condition in which an attachment yarn for fixing a linear fastener element row to a side edge of a fastener tape is never cut out by abrasion due to a contact with other thing or a sliding of a slider having appropriate rigidity and flexibility and exerting excellent resistances against lateral pulling and bending of the fastener chain.
It Is an object of the invention to provide a linear slide fastener capable of preventing a cut-out of the attachment yarn, deviation of the linear fastener element row and the like by specifying a configuration and structure of the attachment yarn for fixing the linear fastener element row to the fastener tape.
It is also an object of the invention to provide a linear slide fastener in which the synthetic resin material is used appropriately and effectively, and the synthetic resin material is applied to the attachment yarn, core thread blade and fastener tape to permeate and harden, so as to fix the linear fastener element row firmly in a stabilized condition, thereby achieving an excellent fastener function.
It is also an object of the invention to provide a linear slide fastener in which various types of the synthetic resin material are used appropriately and effectively by specifying the type of the synthetic resin material for fixing the attachment yarn and the linear fastener element row is fixed to the fastener tape firmly in a stabilized condition.
It is also an object of the invention to provide a linear slide fastener in which a melting point of the synthetic resin material is specified so as to use various types of the synthetic resin materials for fixing the attachment yarn appropriately and effectively, thereby making it possible to fix the linear fastener element row to the fastener tape easily.
It is an object of another aspect of the invention to provide a manufacturing method of a linear slide fastener capable of maintaining a stabilized condition in which an attachment yarn for fixing the linear fastener element row to a side edge of the fastener tape is never cut out by abrasion due to a contact with other thing or a sliding of a slider, having appropriate rigidity and flexibility and exerting excellent resistances against lateral pulling and banding of the fastener chain.
It is an object of the invention to provide a manufacturing method of a linear slide fastener in which the synthetic resin is applied to the attachment yarn exposed on a rear side of the fastener tape to permeate the attachment yarn and harden so that the attachment yarn is fixed to the fastener tape.
It is also an object of the invention to provide a production method of a linear slide fastener in which solution of thermoplastic resin or thermo-setting resin adhesive agent, resin film, resin mono-filament or resin powder is used as the synthetic resin material, and the synthetic resin material is attached or applied to the attachment yarn on the fastener tape and melted by heating so that the fastener tape is coated with the synthetic resin.
To achieve the above described object, according to an aspect of the invention, there is provided a linear slide fastener, wherein a linear fastener element row is attached to a side edge of a fastener tape with a multi-fiber attachment yarn, and synthetic resin material having adhesive property is applied to the attachment yarn fixed on the linear fastener element row so that the synthetic resin material permeates the attachment yarn and hardens to coat the surface of the attachment yarn.
Preferably, the linear fastener element row is sewed to the side edge of the fastener tape using a sewing yarn as the attachment yarn for attaching the linear fastener element row.
Alternatively, the linear fastener element row is woven into the side edge of the fastener tape, using a weaving yarn of warp and weft for weaving the fastener tape, as the attachment yarn for attaching the linear fastener element row.
Alternatively, the linear fastener element row is knitted into the side edge of the fastener tape using a warp knitting yarn for knitting the fastener tape as the attachment yarn for attaching the linear fastener element row.
Preferably, the synthetic resin material is applied to an entangled portion or intersecting portion of the attachment yarn of the sewing yarn, weaving yarn or warp knitting yarn for attaching the linear fastener element row to the fastener tape, so as to permeate, and the respective attachment yarns are bonded with each other integratedly by the synthetic resin material so that the surface of the attachment yarns are coated with the synthetic resin material.
Preferably, the synthetic resin material is applied to the attachment yarn for attaching the linear fastener element row to the fastener tape, and a core thread incorporated by the linear fastener element row or a blade attached to the linear fastener element row so as to permeate, so that the attachment yarn and core thread or blade is hardened integratedly with the synthetic resin material so as to coat the surface of the attachment yarn with the synthetic resin material.
Also preferably, the synthetic resin material is applied to the attachment yarn for attaching the linear fastener element row to the fastener tape and the fastener tape to permeate them so that the attachment yarn and fastener tape are hardened integratedly with the synthetic resin material, so as to coat the
Aoshima Hiromi
Hirota Mutsuo
Yamaguchi Yoshiharu
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Sakran Victor
YKK Corporation
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