EP1384412A1 - Slide fastener including two leather tapes and manufacturing process - Google Patents

Abstract

The zip fastener for the junction of two bands (2,3) comprises two rows of teeth (4,5) able to mutually engage under the action of a cursor (6) and applied respectively on one of the edges (7,8) of each of the bands. Independent claims are included for a method of making the zip fastener and an article using it.

Description

The present invention relates to a slide fastening device for the junction of two leather bands, a method of producing said device and a article using such a zipper.

We already know zipper devices for the junction of two textile bands on which are hooks or teeth suitable for engage each other under the action of a cursor.

In practice, the textile bands are of regular thickness. In addition, they are generally of the same thickness for all the range of closures slide. As a result, such textile tapes are very successful. and have a virtual monopoly on zippers.

The Applicant first raised the problem of replacing the bands textile leather bands and then solve the realization problems that poses this substitution since the leather is not of regular thickness and in besides relatively thick.

Documents US-1,949,889, DE-671,275 and US-1,933,290 suggest this substitution without, however, addressing the problem of the difficulty of achieving it. Indeed, none of these documents offers a solution to overcome the problem of the irregular thickness of the leather band.

Document US-3,885,275 describes, for its part, the maintenance of a heart at inside a fold, the heart being for example a rod. This document does not describe the arrangement of a zipper on one or two strips of leather.

The present invention provides a solution to these problems.

It relates to a zipper for the junction of two bands, comprising two rows of teeth capable of engaging each other under the action of a cursor and applied respectively to one of the edges of each of said two bands.

According to a general definition of the invention, the material of at least one of the two bands is of the leather or leather substitute type and is formed in one piece folded in half, the fold area being filled longitudinally with a rod of selected thickness and the teeth being applied at least partially around the fold area thus filled.

Preferably, the material of the two bands is leather or leather substitute.

Thus, according to the invention, the thickness of the rod makes it possible to regularize the thickness of the leather band area which supports the mounting of the teeth. The result correct and satisfactory mounting of the teeth, the implementation of which can be easily automated.

According to another aspect of the invention, the two parts of the part forming the tape are glued to each other.

According to another characteristic, the rod is made of a material belonging to the group formed by cotton, linen, plastic, non-woven material.

- a) prévoir deux bandes ;

- b) appliquer sur l'un des bords de chacune desdites bandes une rangée de dents, les deux rangées de dents étant aptes à s'engager mutuellement sous l'action d'un curseur caractérisé en ce que l'étape a) prévoit de réaliser au moins l'une des deux bandes en un matériau du type cuir ou succédané de cuir.

The present invention also relates to a method for producing a slide fastening device of the type comprising the following steps:

- a) provide two bands;

b) applying a row of teeth to one of the edges of each of said strips, the two rows of teeth being capable of engaging each other under the action of a slider characterized in that step a) provides for make at least one of the two strips of a material of the leather or leather substitute type.

Preferably, step a) provides for making the two strips of leather or leather substitute.

Advantageously, the method according to the invention further comprises a step treatment of slitting type bands to regulate the thickness said bands.

• a1) former chaque bande en cuir ou succédané de cuir à partir d'une pièce pliée en deux, et
• a2) remplir longitudinalement la zone formant pliure par un jonc d'épaisseur choisie jusqu'à ce que le jonc soit placé à l'intérieur de la zone formant pliure.

According to a preferred embodiment, step a) comprises the following steps:

• a1) forming each strip of leather or leather substitute from a piece folded in half, and
• a2) fill the folded area longitudinally with a rod of selected thickness until the rod is placed inside the folded zone.

Preferably, step a) further comprises step a3) consisting after step a2) gluing the two parts of the part forming the strip to each other.

According to another aspect of the invention, step b) consists in applying the teeth around the folded area thus filled.

The present invention also relates to an article using a device for zipper according to the invention and / or implemented according to the method according to the invention.

• la figure 1 est une vue de face d'un dispositif de fermeture à glissière comprenant deux bandes de cuir réalisées selon l'invention, et
• la figure 2 est une vue en coupe d'une bande en cuir réalisée selon le procédé selon l'invention.

Other characteristics and advantages of the invention will appear in the light of the detailed description below and of the drawings in which:

• FIG. 1 is a front view of a zipper device comprising two strips of leather produced according to the invention, and
• Figure 2 is a sectional view of a leather band produced by the method according to the invention.

Referring to Figures 1 and 2, the zipper 1 according to the invention makes it possible to join two leather bands 2 and 3.

In a variant not shown, only the band 2 is made of leather or leather substitute while the strip 3 is made of textile for example.

The zipper is of the type comprising two rows of teeth 4 and 5 able to engage each other under the action of a cursor 6.

Teeth 4 and 5 are applied respectively to one 7 and 8 of the edges of each of said two bands 2 and 3.

• a1) former chaque bande en cuir ou succédané de cuir 2 et 3 à partir d'une pièce 9 pliée en deux parties 12 et 13,
• a2) remplir longitudinalement la zone formant pliure 10 par un jonc 11 d'épaisseur choisie jusqu'à ce que le jonc soit placé à l'intérieur de la zone formant pliure, et
• a3) coller l'une à l'autre les deux parties 12 et 13 de la pièce 9 formant la bande 2, et 3.

The method for producing the zipper device according to the invention firstly comprises the following steps:

• a1) forming each leather strip or leather substitute 2 and 3 from a piece 9 folded into two parts 12 and 13,
• a2) longitudinally filling the fold-forming zone 10 with a rod 11 of selected thickness until the rod is placed inside the fold-forming zone, and
• a3) glue the two parts 12 and 13 of the part 9 forming the strip 2, and 3 to each other.

The rod or wire 11 allows here to regulate the thickness of the leather in the area forming a support for mounting teeth 4 and 5.

The diameter or thickness of the rod 11 is chosen here according to the opening teeth.

In practice, the rod is made of a material belonging to the group formed by cotton, linen, plastic, non-woven material.

Finally, according to step b), it is planned to apply teeth 4 and 5 around the folded area thus filled.

In practice, the application (or mounting) of the teeth is carried out using a machine which allows to apply individually (or by block) at least partially around the edges thus defined by the rods 11.

Preferably, the cursor 6 has a blunt bottom edge in order to limit the abrasion of the bands when said cursor passes.
Advantageously, the method further comprises a step of treating strips of the slitting type of leather making it possible to regularize the thickness of said strips.

The zipper device according to the invention finds use and / or application for any article, and any field in particular in leather goods.

For example, the item is made primarily of leather or a substitute for leather and the bands of the zipper being either attached or constituting a wall of the article.

Claims (12)

Zipper for joining two bands (2 and 3) comprising two rows of teeth (4 and 5) capable of engaging each other under the action of a cursor (6) and applied respectively to one edges (7 and 8) of each of said two strips (2 and 3), the material of at least one of the two strips (2 and 3) being of the leather or leather substitute type, characterized in that said strip is formed of a piece (9) folded in half, in that the fold-forming zone (10) is filled longitudinally by a rod (11) of selected thickness and in that the teeth (4 and 5) are applied at least partially around said fold zone (10) thus filled. Device according to claim 1, characterized in that the material of the two bands (2 and 3) is of the leather or leather substitute type. Device according to one of claims 1 or 2, characterized in that the two parts (12 and 13) of the part (9) forming the strip are glued to one another. Device according to one of claims 1 to 3, characterized in that the rod (11) is made of a material belonging to the group formed by cotton, linen, plastic, a non-woven material. Method for producing a zipper of the type comprising the following steps: - a) provide two bands (2 and 3); - b) applying on one (7 and 8) of the edges of each of said strips (2 and 3) a row of teeth (4 and 5), the two rows of teeth (4 and 5) being able to engage mutually under the action of a cursor (6); characterized in that step a) provides for producing at least one of the two strips (2 and 3) in a material of the leather or leather substitute type. A method according to claim 5, characterized in that step a) provides for making the two strips (2 and 3) in a material of the leather or leather substitute type. Method according to claim 5 or claim 6, characterized in that it comprises a step of processing the slitting type strips (2 and 3) making it possible to regularize the thickness of said strips. Method according to claim 6 or claim 7, characterized in that step a) comprises the following steps: a1) forming each strip of leather or leather substitute type (2 and 3) from a piece (9) folded into two parts (12 and 13), a2) fill the fold-forming zone (10) longitudinally with a rod (11) of selected thickness, until the rod is placed inside said fold-forming zone. A method according to claim 8, characterized in that step a) further comprises step a3) consisting of step a2) after gluing the two parts (12 and 13) of the part to each other (9) forming the strip (2 and 3). Method according to claim 8 or claim 9, characterized in that step b) consists in applying the teeth (4 and 5) at least partially around the fold-forming area (10) thus filled. Article using a zipper according to one of the claims 1 to 4 and / or implemented according to the method according to one of claims 5 to 10. Article according to claim 11, characterized in that it is essentially made of leather or a leather substitute, the strips of the zipper being either attached or constituting a wall of the article.

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