JPH05285577A - Metallic net prevented from wire fraying and its manufacture - Google Patents

Abstract

PURPOSE:To completely prevent the metallic net from being frayed or the wire from dropping away by arranging an area with compressed net until the cubic space does not exist in the peripheral part of the metallic net. CONSTITUTION:In the metallic net, there exist not only the plane space but also the crossing space of warps 1-7 and wefts 1'-7', that is, the cubic space in the neighborhood of the knuckle crossed with the warps 1-7 and the wefts 1'-7'. When this crossing part is compressed, the crossing part is crushed, the net is made to plane, the cubic space is eliminated, the warps 1-7 and the wefts 1'-7' are permanently deformed in a closely contact and un-slidable state and the wire is prevented from being frayed in this area. Therefore, the compressed area must be arranged in the peripheral part until the state that the cubic space is eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal net which prevents fraying at the peripheral edge and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, thread fraying which occurs on the periphery of a metal net has been a serious problem. In particular, the metal mesh manufactured and used as a cutting net has severe fraying of the thread from the periphery, and since the metal wire is permanently deformed, the wire frayed wire cannot be restored, so it had to be removed. ..
As a means to prevent thread fraying, spot welding of the knuckle at the peripheral edge or impregnation with synthetic resin was used to join each wire, but workability was poor and there was a problem that the welded part and the binding resin remained. ..

[0003]

DISCLOSURE OF THE INVENTION The present invention provides a metal net which solves the above problems and completely prevents the wire net from being frayed and the wires from falling off, and a method for producing the same.

[0004]

MEANS FOR SOLVING THE PROBLEMS The present invention provides "(1) A thread fray prevention region in which a net is compressed in the peripheral direction of a metal net in the thickness direction to substantially eliminate a three-dimensional space to prevent thread fray. Metal mesh (2) A metal mesh that prevents the thread fraying according to the item 1 in which the thread fraying prevention area is arranged at the peripheral edge of the long side of the metal mesh (3) The metal mesh is a woven fabric having a woven weave structure There is a metal mesh which prevents the thread fraying according to item 1 or 2. (4) The metal mesh is a woven fabric made of stainless wire.
A metal mesh according to any one of items 1 to 3 in which thread fraying is prevented. (5) Preventing thread fraying, which is characterized in that a metal mesh is compressed in the thickness direction and is divided into a required area by a compressed portion that substantially eliminates a three-dimensional space, and is cut at almost the center of this compressed portion. For manufacturing a finished metal net. Regarding

[0005]

According to the present invention, the peripheral portion of the metal mesh is compressed in the thickness direction so that the warp threads and the weft threads constituting the mesh are pressure-bonded to each other to permanently deform them and prevent fraying. There is no three-dimensional space in the compressed periphery. In other words, the area in which the net is compressed is arranged until the three-dimensional space does not exist in the peripheral portion. The net has not only a two-dimensional space but also a crossing space between the warp and the weft, that is, a three-dimensional space near the knuckle where the warp and the weft intersect. When this crossing portion is compressed, the crossing portion is crushed and the net is flattened so that the three-dimensional space disappears and the warp and weft are permanently deformed in a non-sliding, tightly contacted state, and thread fraying is prevented in this area. Therefore, it is necessary to arrange the compressed area in the peripheral portion until such a three-dimensional space does not exist.

The three-dimensional space is a special structure found only in fabrics. The fabric overspace consists of a planar space formed by the warp and weft, and a three-dimensional space formed at the knuckle where the warp and the weft intersect. The function of maintaining the structure of the fabric is mainly exerted by the knuckle portion.
In other words, the knuckles hold the threads together. The state where there is no three-dimensional space means that the knuckle has a structure in which the warp and the weft are sufficiently bent and held and held in close contact with each other. Only in such a state, the metal wires at the peripheral portion of the metal net are fixed to each other and the thread fraying is prevented. Even if the peripheral edge of the metal mesh is simply pressed, the thread fraying cannot be prevented by itself.

Regarding the method for producing a metal net which prevents the yarn from fraying according to the present invention, the metal net is compressed in the thickness direction until there is substantially no three-dimensional space, and the required area is obtained with a compression part having a width of 2 mm to 8 mm. Partition. Then, the metal mesh having a required area is cut at substantially the center of the compressed portion. The compression portion serves as a yarn fray prevention area and is arranged at the peripheral edge of the metal mesh. When the metal net is cut into a required area and the peripheral edge is compressed, the compression tends to cause the yarn to fall out of the texture, so that the manufacturing method of the present invention in which the wire is held by the woven texture during compression is excellent.

The present invention is particularly suitable for a wire mesh which is required to have high precision and is woven by elastic lines, such as a filter for an inflator. Next, a specific description will be given with reference to examples.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an enlarged view of a metal net of the present invention and shows a cross section of a thread fraying prevention area. In this embodiment, the wire diameter is 0.
3. It is a tatami-woven net having a plain weave structure of 30 warps and 30 wefts using mm stainless steel wire. The warp is 1.2.3.
4. 7 to 7, and the weft yarns are indicated by numbers with ′. The weft yarns 6 '. 7'is compressed in the knuckle part. Similarly, the warp and the weft are compressed on the back surface of the net. The warp yarns on the weft yarns 6'and 7'are compressed by a knuckle. Similarly, the warp and weft are compressed on the back side.

FIG. 2 shows a cross section of the mesh shown in FIG. It is clearly shown that 2'-7 'are compressed and are embedded in the warp 7. There is no three-dimensional space here.

FIG. 3 shows a cross section obtained by cutting the net of FIG. 1 with a weft thread 7 '. Since 30 warps and 30 wefts are woven and compressed per inch, there is substantially no three-dimensional space.
It can be seen from FIG. 3 that the warp yarns are difficult to insert. Since there is no solid space at the peripheral edge in this way, the warp and weft yarns are firmly inserted into each other and fixed, and no yarn fraying occurs.

FIG. 4 shows a conventional metal mesh. The rim is not compressed and remains woven. For comparison, the mesh was the same as in FIG.

FIG. 5 shows a cross section cut by the warp yarn 7, and it can be seen that the weft yarns 1'to 7'are simply arranged above and below the warp yarn 7. In particular, regarding the weft yarn 7'at the end portion, the weft yarn is not easily inserted into the weft yarn, and since the warp yarn does not hold the weft yarn, the weft yarn easily comes off from the weave design and falls off. That is, thread fraying occurs.

FIG. 6 shows a cross section cut with a weft thread 7 '.
Since it is not crimped in the thickness direction, there is no thread biting. This design has a three-dimensional space, that is, the position where the warp intersects with the weft, for example, the warp 6 and the weft 7'intersect and the warp 7 next to each other, but a large space is formed between the knuckles. The space is not visible in FIG. 4, which is shown in plan view, but is formed between the warp threads 7 and 6 of FIG. In a structure in which there is a three-dimensional space, the warp and weft do not bite into and stick to each other. It can be seen from FIG. 5 that the weft 7'is not held by the warp. Next, the results of the comparative test of thread fraying are shown.

COMPARATIVE TEST The example is a net shown in FIG. 1 in which a stainless steel wire is used for the warp and the weft, and the plain weave design of 30 warps per inch and 30 wefts is 100 mm wide and 200 mm long. The yarn anti-raveling area has a width of 3 mm and is arranged at the peripheral edge and has a thickness of 1/3 of the woven fabric, and there is no three-dimensional space. In the comparative example, the same net as that of the example is used and there is no thread fraying prevention region. Both nets were brushed three times in the weft direction with a wire brush of a stainless filament having a wire diameter of 0.1 mm. The results are shown in Table 1.

[0016]

[Table 1]

It is clear that the present invention is excellent because the metal net is inconvenient to handle because one thread must be taken out even if it is frayed.

[0018]

EFFECT OF THE INVENTION The metal net of the present invention is a metal net in which thread fraying is prevented, and it is easy to handle during distribution and use, and has excellent workability.

[Brief description of drawings]

FIG. 1 is a plan view showing a part of a metal net of the present invention.

FIG. 2 is a warp cross-sectional view obtained by cutting the metal mesh of FIG. 1 with a warp yarn 7.

3 is a weft cross-sectional view obtained by cutting the metal mesh of FIG. 1 with a weft yarn 7 '.

FIG. 4 is a plan view showing a part of a conventional metal net.

5 is a warp cross-sectional view obtained by cutting the metal net of FIG. 4 with warp yarns 7. FIG.

6 is a weft cross-sectional view of the metal mesh of FIG. 4 cut by a weft yarn 7 '.

[Explanation of symbols]

 1 Warp 2 Warp 3 Warp 4 Warp 5 Warp 6 Warp 7 Warp 1 ′ Weft 2 ′ Weft 3 ′ Weft 4 ′ Weft 5 ′ Weft 6 ′ Weft 7 ′ Weft

Claims (5)

[Claims] 1. A metal mesh for preventing thread fraying, comprising a thread fraying prevention zone in which a three-dimensional space is substantially eliminated by arranging the mesh in the peripheral direction of the metal mesh in the thickness direction. 2. The metal mesh for preventing thread fraying according to claim 1, wherein the thread fraying prevention area is provided at a peripheral portion of a long side of the metal mesh. 3. The metal mesh according to claim 1 or 2, wherein the metal mesh is a woven fabric having a woven weave structure. 4. The metal mesh according to any one of claims 1 to 3, wherein the metal mesh is a woven fabric made of stainless steel wire. 5. A thread fray, characterized in that a metal mesh is compressed in a thickness direction to be divided into a required area by a compression portion which substantially eliminates a three-dimensional space, and is cut at a substantially central portion of the compression portion. A method for producing a metal net that prevents the occurrence of heat.