KR800000402B1 - Elastic fastening device consisting of two supports with loops and hook - Google Patents

Abstract

The interengaging hooks and loops were supported in an elastic fabric woven so that the hooks and loops may maintain their original shape even max. elastic deformation of the fastener. The limited elasticity of the fabric was produced in one and/or both directions by weaving it with a combination of inelastic and elastic warp or weft yarn, the inelastic warp or weft being disposed in a zigzag manner around the weft picks and/or warp yarn, respectively.

Description

Extendable fasteners consisting of two supports with loops and hooks

1 is a longitudinal cross-sectional view of a hook support of a fastener according to the invention

FIG. 2 is a longitudinal sectional view of the loop support supported by the hook support of FIG.

3 is a perspective view of a fastener according to the present invention

Figure 4 is a longitudinal cross-sectional view of the fastener according to the present invention in a state in which the penetration is coupled to each other but the tension is not given

5 is a longitudinal cross-sectional view of a fastener extending in the longitudinal direction

6 is an inclined cross-sectional view of another hook support of the fastener according to the present invention.

7 is an inclined cross-sectional view of another loop support of the fastener according to the invention.

FIG. 8 is a schematic showing the warp and weft arrangements forming the loop support shown in FIG.

FIG. 9 is a tissue diagram of the loop support shown in FIG.

The present invention relates to stretchable fastenings consisting of two supports having loops and hooks that are pressed together to penetrate each other.

Fasteners composed of two flexible supports are known, in which two supports are formed to penetrate and bond to each other. Swiss patent 339,115, for example, describes such a fastener. In that fastener, one of the supports is in the form of a loop and the other is in the form of a hook. Also known are other fasteners consisting of two similar supports each having a plurality of loops and a plurality of hooks. The loops and hooks are usually made by a weaving process, and the fasteners are used, for example, in the garment industry (to fasten clothes), the furniture industry (chair covers, carpet fittings), and in the medical field (bandage wraps).

All such conventional fasteners are very flexible but have a common property that under certain conditions they do not elastically deform. Such conventional fasteners may not be used because in many applications such elastic deformation is required as well as necessary. For example, fasteners are often used in stretch fabrics in the apparel industry, and when using conventional fasteners on such fabrics, there is no elasticity in the portion of the fabric to which the fastener is attached. For that reason, such fasteners are relatively rarely used in applications other than linen, corsets, and various medical parts.

According to the present invention, in a fastener composed of one woven support having a hook and another woven support having a loop penetratingly coupled with the hook, the support is a synthetic fiber weft yarn, an inelastic synthetic fiber yarn, an elastic yarn Weaving is made of warp and synthetic fiber yarn warp yarns, wherein the inelastic composite fiber yarn warp yarns and the pile yarn warp yarns each have approximately twice the length of the unstretched length of the support body and are arranged zigzag around the weft yarn so that the support body extends in the warp direction. A fastener is provided which is characterized in that it is possible.

When both the supports are elastic, their elasticity may be the same or different. In such a fastener, the fastener can be extended in the elastic direction with little influence on the attachment of the fastener. The tensile force may be applied to two overlapping bonded supports or may be applied in one direction to one support and in the opposite direction to the other.

When both supports have the same elasticity, the supports are stretched to the same length upon extension, and the hooks and loops penetrated to each other do not move relative to each other. If the fastener is used to attach two parts of an elastic fabric, the fastener can be stretched with the fabric when the fabric is stretched. In contrast, when both supports have different resilience, the difference in their resilience should be chosen such that the overall resilience of the fastener is sufficient to absorb the tension received in the particular application.

Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

In the embodiment shown in FIG. 1, the hook support is a warp woven fabric of weft of multifilament nylon yarns 1-12, inelastic multifilament nylon yarn 13 to limit elongation and yarn 14 of natural or synthetic elastomer. It is. The weft yarns 2,3,5,6,8,9,11,12 are arranged above and below the elastic yarn 14 as shown, and the multifilament nylon warp yarn 13 is shown as weft yarns 1,2,4,5, It is arranged zigzag around 7,9,10,11.

The hooks 15, 16, 17 and 18 are formed by a single thread of warp 19 of the pile yarn. The first pile yarn 19 is in the form of a loop, after which the loop is cut to form a hook 15. In addition, the pile yarn passes under two weft yarns 2 and 3 and then passes over the weft yarns 4 and below the two weft yarns 5 and 6 to form a loop, after which the loop is cut to form a hook 17. After forming the hook 17, the pile yarn 19 passes under the wefts 8 and 9 and above the wefts 10 and passes under the wefts 11 and 12 to form another loop, which is subsequently cut and hooked (not shown). ). The pile yarn 19a passes over the weft yarn 1 and then passes under two weft yarns 2 and 3 to form a loop, which loop is cut to form hook 16. The pile yarn 19a then passes under two wefts 5 and 6, and above weft 7 and after wefts 8 and 9, forms a loop so that the loops are cut to form hooks 18.

During weaving, heat treatment is applied to the hook support to fix the base fabric and the loops of the pile yarn 19, and the loops of the pile yarn 19 are cut after the hooks 15, 16, 17, 18... … Becomes The temperature and time of this heat treatment depends on the yarn used. In carrying out this treatment, in order to make the hook support completely flat, it is necessary to apply tension to the support without stretching the support. In order to maintain good elasticity to improve the shape of the hook support and to firmly fix the pile yarn to the base fabric, the hook support is coated with a processing agent having a permanent elasticity such as rubber or latex. The loops of the pile yarn are then cut to form hooks 15-18.

At the time of processing, the hook support is provided with a tension such that it is not stretched during coating and drying. The coating is hardened almost by drying, thereby providing a sufficiently strong binding to the hooks formed by the pile yarn while being able to extend the hook support at will without deforming the hook or fabric. By tensioning the hook support, cutting of the pile yarn loop 19 is facilitated.

The hook support shown in FIG. 1 doubles its elongation length when fully extended. In FIG. 1, it can be seen that the elastic yarn 14 is stretched when the hook support is given tension. However, the inclined 13 and the elastic and non-stretching pile yarn 19 are arranged in a zigzag between the weft yarns 1-12 of the base fabric, so that the zigzag state may spread and extend in the inclined direction when the hook support is extended at maximum. . The inclination 13 may have a length larger than that of the unextended support, that is, twice as long as the unextended and processed support as in the case of FIG. Similarly, the length of each pile yarn of the support is about twice the extension length of the woven portion of the support.

In FIG. 2, the roofing support consists of a fabric consisting of multifilament nylon weft 20-28, inelastic multifilament nylon yarn warp 29, 29a, 29b and natural or synthetic fiber elastic warp yarn 30.

The elastic yarn 30 passes below the weft 20, above the weft 21, below the two weft yarns 22 and 23 adjacent to each other, and above the weft 24. The warp yarns 29 and 29a of the base weave are zigzag around the weft yarns 20-28, and the warp yarn 29b is also zigzag around the weft yarns 20-28 and two adjacent weft yarns 22, 23, 25 and 26,. … Pass above Loops 31-36 are pile yarns 37, 37a and 37b, which are arranged zigzag between the weft yarns 20-28 and span 30 tanjung yarns.

Like the hook support, this loop support is also subjected to heat treatment, and the loop weaves 31-36 are formed by pile yarns 37, 37a, 37b, and the base weave of the weft 20-28 and the warp yarns 29, 29a, 29b, 30 is formed of the loop support. Elastic processing on the back. This loop support has similar or different elasticity to that of the hook support described with reference to FIG. Because the elastic yarn can be stretched and the warp yarns are zigzag-woven, the loop support, like the hook support, can also be stretched up to twice its length when it is fully stretched. When the loops of the loop support and the hooks of the hook support are infiltrated with each other and then the two supports are extended, the supports are stretched in proportion to the tensile force, and the joined loops and the hooks retain their original positions with respect to each other. It remains infiltrated with each other.

In the embodiment described with reference to Figs. 1 and 2, the supports are elastic only in one direction, that is, in the oblique direction, and the elasticity is sufficient for a normal purpose. However, those skilled in the art can very easily weave by arranging the elastic weft and the non-elastic weft in a zigzag on the inclination, so that the elastic weft can be elastic in both directions by providing limited elasticity in the weft direction. An embodiment with such supports is shown schematically in FIGS. 3, 4, 5. In these figures, arrow F indicates the extension direction of the support in the longitudinal direction and arrow F ₁ indicates the extension direction in the transverse direction.

As in the embodiment described above, this embodiment consists of a support 38 having a suitable loop 39 and a support 40 having a suitable hook 41.

In FIG. 6, a hook support in the form of a strip of 30 mm width having a good longitudinal resilience is shown.

In this embodiment, the base fabric is made of 140 india, 600T / M stranded -400T / M coined inelastic first slope of 160 filament nylon yarns and 37 synthetic rubber yarns of 2,300m / kg thickness. Consists of two slopes.

The pile yarn is made of 35 filament nylon yarns with a diameter of 0.18mm, and the weft yarn is made of multifilament nylon yarns of 200 denier and 200T / M strands.

In this example, the array of warps for one complete tissue of the support is as follows.

In FIG. 1, when passing, in order to obtain satisfactory quality, a pile yarn loop is formed in such a manner that at least two nylon warp yarns of one base fabric, one yarn yarn, and one temporary support are formed to contribute to the loop formation. It can be seen that it is necessary to form a pile yarn loop.

A group consisting of four 140 denier nylon yarns, one elastic yarn, and a 0.18 mm diameter pile yarn is placed in the same opening of the loop body. In this case, the diameter of the heald is as follows.

In the organizational design of woven fabrics, the support is designed with a combination of warp, elastic yarn and pile yarns so that the support has a good elasticity, i.e., a tradeoff between the need for maintaining the correct shape and position of the pile yarn loops.

Thus, the support has a loop arranged perpendicularly or obliquely to the inclination.

This arrangement of pile yarn loops facilitates subsequent processing of the loops by thermal, mechanical or similar methods for cutting the loops to form hooks. The pile yarn is repeated every six and so is very tightly bonded in the base fabric. Such a bond, in the form of a W in the weft direction, imparts high elongation to the fabric, thereby allowing the fabric to recover its initial form and dimensions, due to the elastic yarn after it is stretched. The length of each pile yarn of the fabric is approximately twice the extension length of the woven part of the fabric.

FIG. 6 shows the inclined portion of the strip and shows the inclined cross section of the support, in which the multifilament nylon warp 42, the elastic yarn 43, the monofilament nylon pile yarn 44 and the multifilament nylon weft yarn 45 are shown. The opening 46 of the loop cut off to form the hook is also shown in FIG. 6.

In the loop support shown in Figs. 7, 8 and 9, the base fabric has a width of 30 mm, a first slope of 160 denier multifilament nylon yarn of 140 denier, 600 T / M stranded-400 T / M coincidence, and 3,030 It is composed of a second slope consisting of 34 synthetic rubber yarns of m / kg thickness. The pile company consists of 34 copies of the 90 denier 200T / M left side.

Like the hook support of FIG. 6, the weft yarn is made of 200 denier, 200 T / M coincidence multifilament nylon yarn. In this example, the array of warps for one complete tissue of the support is as follows.

Unlike the barrel system used for the hook support, the inclination does not pass through the opening of the heald. Because of this, the loops of the support are only partially placed on each temporary support.

A group consisting of four warp yarns, one elastic yarn, two pile yarns, and two respective temporary supports is passed through the same body hole of the loom body. In this example, the seeding mirror is performed as follows.

In the organization chart design for weaving the fabric, it was designed by combining the warp, elastic yarn, and pile yarn to provide a good elasticity to the support as described in the hook support. The structure of this embodiment processes a fully corrugated surface such that the hook support has a large bond capacity. Between the loops formed by pile yarns, pile yarns are repeated every 4-5 copies so that the pile yarns have a W-shape in the weft yarn when viewed from the weft direction. The length of each pile yarn of the fabric is approximately twice the unextended length of the woven portion of the fabric. Due to the dense tissue of the fabric and the location of the weft yarn in the fabric, the binding of the pile yarn does not affect the flexibility of the support and easy elongation and recovery.

The inclined cross section of the support (FIG. 7) clearly shows the structure of the fabric and the position of the warp and weft in the support. As in the drawing of the hook support, numerals 42-45 denote warp yarns, elastic yarns, pile yarns, and weft yarns, respectively.

The relationship between the canon and the tension of the elastic warp yarns during weaving is important for both the hook and loop supports. In this example, the elastic yarn, ie synthetic rubber, is considered to be untensioned or compressed for the length indicated by one.

The diameter of the elastic inclination is performed under a tension of 2.8: 1, that is, it is extended from the nonclinical to 2.8 times the unextended length. Next, the elastic inclined diameter with this elongation coefficient is woven in the loom under a tension of 1.15: 1, that is, the inclination length of 1.15 m is obtained with respect to 1 m of the unexpanded inclination hemmed from the beam during weaving.

Of course, this ratio can be changed as necessary to impart the desired elasticity to the finished support. It should be noted that the elasticity of the finished support is affected by the number of wefts per meter.

Woven fabrics made under the above conditions are processed by any means and articles known in the textile industry.

In the embodiments described above, the supports in the elastic deformation, i.e., in the stretching direction, have the form as shown in Figs. Indeed, the pitch P (FIG. 4) between two adjacent hooks becomes P _l after stretching, where P _l > P. The pitch P ₁ automatically returns to the value P when the tension is removed. As a result, the relative position of the hooks and loops of each support of the fastener is allowed without reducing the coupling strength between the supports, since the hooks and loops retain their hooks and loops in either extension or release. It becomes almost constant within the strain limit.

The hooks and loops may have the same length from their respective supports or may be of different lengths.

Claims (1)

A fastener consisting of one woven support having a hook and another woven support having a loop penetrated with the hook, the support comprising: a synthetic fiber weft yarn, an inelastic synthetic fiber yarn, an elastic yarn yarn and a synthetic fiber Weaving in a yarn inclination, wherein the inelastic composite fiber yarn inclination and the pile yarn warp are each approximately twice as long as the unstretched length of the support and are arranged zigzag around the weft yarn so that the support can be stretched in the oblique direction. Fasteners.

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