1. Field of the Invention
The present invention relates to a slide fastener for use in a case, bag and the like, whose small size one being used in, for example, a business case, shoulder bag and large size one being used in an opening of a suite case, and a manufacturing method thereof.
2. Description of the Related Art
Conventionally, when the slide fastener is attached to an opening of a case, a bag or the like, an end portion of a cloth of an attachment object such as the case and bag is folded back and a fastener tape is sewed thereto or the fastener tape is sewed with beading lying between the cloth and the fastener tape. However, the sewing operation is troublesome.
Then, as shown in
In the slide fastener for use in the opening of the bag shown in
The invention has been achieved in views of the above-described problem and therefore, an object of a main aspect of the invention is to provide a slide fastener in which both sides of a fastener chain are reinforced, an attachment object may be mounted to a fastener tape in a stable condition. Therefore, more specifically, the object of the invention is to provide a good-appearance, and strongly-built slide fastener in which the reinforcement member made of thermoplastic resin is bonded to the fastener tape easily and firmly.
Another object of the invention is to provide a slide fastener which is equipped with various kinds of reinforcement members depending on an attachment style to the attachment object and can be attached to the attachment object in a stable condition.
Still another object of the invention is to provide a slide fastener in which by specifying an adhesive agent for fixing the reinforcement member to the fastener tape, attachment of a high fixing strength can be obtained.
Further object of the invention is to provide a manufacturing method of a slide fastener which enables a reinforcement member and a fastener tape to be bonded with each other firmly and simply using a thermal welding resin film.
To achieve the above-described objects, according to the invention, a reinforcement member is bonded to a fastener tape along both outer sides of a fastener chain. Consequently, both the outer sides of the fastener chain are reinforced and the attachment object can be mounted to the fastener tape in a stabilized condition. Further, this fastener tape can bear a long-term use and the reinforcement member and the fastener tape can be bonded with each other easily and firmly, so that they are not separated easily.
Preferably, the reinforcement member to be bonded to the fastener tape contains a concave mounting groove, in which an attachment object is to be inserted, the concave mounting groove being provided in a side face thereof. Consequently, an end portion of an attachment object such as a bag or a case is protected and the attachment can be mounted to the reinforcement member easily.
Alternately, there is provided the slide fastener according to the first aspect, wherein the rear face of the reinforcement member to be bonded to the fastener tape is a flat bonding face. Consequently, the attachment object such as the bag and or the case can be mounted to the fastener chain provided with the reinforcement member in a stabilized condition.
Preferably, the reinforcement member and the fastener tape are bonded with each other with a thermal welding resin film as a bonding member. Consequently, the reinforcement member can be bonded to the fastener tape equally without any unevenness along the longitudinal direction of the fastener chain and further, a high bonding strength can be obtained.
Further preferably, a manufacturing method of a slide fastener comprises the steps of: molding a reinforcement member continuously; and disposing a thermal welding resin film between the reinforcement member maintained at a high temperature and a fastener tape, the thermal welding resin film having a lower melting point, and bonding the reinforcement member with the fastener tape. Consequently, the reinforcement member can be bonded to the fastener chain equally at a high bonding strength along the longitudinal direction of the fastener chain through a simple process.
And further, the manufacturing method of the slide fastener further comprising a step of attaching the thermal welding resin film to a surface of the fastener tape by welding or sticking. Consequently, the thermal welding resin film, which is to be disposed between the reinforcement member and the fastener tape, does not have to be positioned specially and the reinforcement member can be bonded to the fastener tape securely.
Still further, the thermal welding resin film has a separation film provided on the surface thereof, the manufacturing method further comprises a step of peeling off the separation film after water-repellent treatment is performed to the fastener tape before bonding the reinforcement member and the fastener tape. Consequently, when the fastener tape is subjected to water repellent finish processing, no water-repellent material adheres to the thermal welding resin film, thereby preventing adhesion of the thermal welding resin film from dropping. As described above, the effects which the present invention achieves are very conspicuous.
Hereinafter, the preferred embodiments of a slide fastener of the invention will be described in detail with reference to the accompanying drawings.
According to the slide fastener of the invention, as shown in
The reinforcement member 5 is molded of ordinary thermoplastic resin or thermoplastic elastomer, or rubber material and has an appropriate plasticity and flexibility. The reinforcement member 5 contains a concave mounting groove 8 whose side face is open so that an end portion of an attachment object 16 such as a bag or a case can be inserted between opposing upper piece 6 and lower piece 7. To insert and fix the attachment object 16 in this mounting groove 8, a concave groove 9 for guiding a sewing thread is provided in the surface of the upper piece 6. A rear face of the lower piece 7 forms a flat bonding face.
According to the use condition of the slide fastener with this reinforcement member 5, as shown in
The fastener chain 1 on which the reinforcement member 5 is bonded is sewed to the attachment object 16 such as the bag or the case with sewing thread 17 along the concave groove 9 for guiding the sewing thread formed in the surface of the reinforcement member 5 such that the surface of the attachment object 16 is brought into contact with the rear face of the reinforcement member 5.
Alternately, a rear face of the reinforcement member 5 is formed entirely in the form of a flat bonding face without providing the reinforcement member 5 with any special structure for accommodating the attachment object or the fastener tape, unlike the above described embodiment and then, the fastener tape 2 is bonded to this flat surface by heating the thermal welding resin film 13 with a pressure. An end portion of the attachment object 16 such as the bag, case or the like is brought into contact with the fastener tape 2 on the rear face of the reinforcement member 5 and the attachment object 16 may be sewed along the concave groove 9 formed in the surface of the reinforcement member 5 with the sewing thread 17.
The slide fastener bonded to the reinforcement member 5 needs to be performed with water-repellent treatment with water-repellent material such as silicone if it is used in, for example, a water-proof case or the like. In this case, before the reinforcement member 5 is bonded to the fastener tape 2 as shown in
The bonding member for bonding the fastener tape 2 to the reinforcement member 5 is not restricted to the thermal welding resin film. A thermal welding synthetic fiber yarn may be woven in the side edge of the fastener tape as a warp or knitted in as a warp knitted yarn or the thermal welding resin film may be woven or knitted into the side edge of the fastener tape so as to form the fastener tape. When bonding the reinforcement member, it may be bonded by heating with a pressure. Further, it is permissible to spray emulsion type adhesive agent as an adhesive bond with a spray nozzle just before bonding the reinforcement member.
“Next, the manufacturing method of the slide fastener of the invention will be described. As shown in
Number | Date | Country | Kind |
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2001-023927 | Jan 2001 | JP | national |
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Number | Date | Country | |
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20020100148 A1 | Aug 2002 | US |