JPH066468U - Woven or knitted - Google Patents

Abstract

(57) [Abstract] [Purpose] To solve the problems associated with the deformation of warps and wefts of conventional metal fabrics. [Configuration] A shape memory alloy or a shape memory resin is used for at least one of the warp yarn 4 and the weft yarn 5 of the woven fabric, and the shape memory treatment is performed in a woven state.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to woven or knitted fabrics.

[0002]

[Prior art and its problems]

 For example, in a screen printing machine, when printing a printed material such as a print substrate, a screen made of a woven fabric such as a stencil mesh woven with metal warp and weft is widely used. In screen printing machines, it is well known that a squeegee is pressed against the screen and the screen engages the print, thereby printing. In this case, it is unavoidable that the screen is compressed by the squeegee and the metallic warp and weft are deformed after each printing. When this is repeated many times, there is a problem that the metallic warp and weft do not return to their original shapes, which disturbs the printing pattern and reduces printing accuracy.

In addition, when filtering highly viscous substances such as dyes and polymers, metal fabrics are used as the filter. However, also in this filter, the metal warp and the weft are not deformed by the pressure of the substance. And, when it is used for a long time, the metallic warp and weft do not return to the original shape, which may reduce the filtration effect.

[0004]

[The purpose of the device]

 Therefore, this invention has been made for the purpose of solving the problems associated with the deformation of the conventional warp and weft of metallic fabrics.

[0005]

[Constitution of device]

 According to this invention, the shape memory alloy or the shape memory resin is used for at least one of the warp and the weft of the woven fabric, and the shape memory process is performed in the woven state.

Alternatively, a shape memory alloy or a shape memory resin may be used as the knitting yarn, and the shape memory treatment may be performed in the knitted state.

[0007]

[Explanation of Examples]

 An embodiment of this invention will be described below.

FIG. 1 shows an embodiment of this invention. This is a screen printer having a screen 1, a squeegee 2 and a platen 3. As shown in FIG. 2, the screen 1 is made of a woven fabric of metallic warp threads 4 and weft threads 5. Further, a shape memory alloy is used for the warp yarn 4 and the weft yarn 5, and the shape memory alloy is subjected to shape memory treatment in a woven state. In this embodiment, heat treatment is used as the shape memory process. Then, a printed matter 6 such as a print base is placed on the platen 3, ink is supplied to the screen 1, a squeegee 2 is pressed against the screen 1, and moves along the screen 1. Therefore, the screen 1 engages with the printed matter 6, and the printed matter 6 is printed.

Therefore, in this printing press, the screen 1 is compressed by the squeegee 2 and the warp threads 4 and the weft threads 5 thereof are deformed every time printing is performed, but the warp threads 4 and the weft threads 5 made of a shape memory alloy are woven. The shape memory processing is performed, and even if the printing is repeated many times, the warp 4 and the weft 5 are restored to their original shapes and restored to the woven state each time. Therefore, there is no possibility that the print pattern on the screen 1 is disturbed.

FIG. 3 shows another embodiment. This is a filter 7 made of metal woven fabric for filtering highly viscous substances such as dyes and polymers. Similar to the screen 1 of FIG. 1, a shape memory alloy is used for the warp 4 and the weft 5 of the filter 7 as well, and the shape memory alloy is heat-treated in a woven state to be shape-memory treated.

Therefore, when the substance is filtered by the filter 7, the pressure of the substance is released from the warp 4 and the weft 5 of the filter 7 even if the warp 4 and the weft 5 of the filter 7 are deformed by the pressure of the substance. Then, each time, the warp yarn 4 and the weft yarn 5 are restored to their original shape and restored to the state when they were woven. Therefore, even if it is used for a long period of time, the filtration effect does not decrease.

In addition, in the screen 1 or the filter 7 of FIGS. 1, 2 and 3, a shape memory resin may be used for the warp 4 and the weft 5 instead of the shape memory alloy. Then, when the shape is memorized in the woven state, the warp 4 or the weft 5 made of the shape memory resin recovers its original shape after the deformation, and restores to the woven state. Therefore, there is no possibility that the print pattern of the screen 1 is disturbed, the filtering effect of the filter 7 does not deteriorate, and the same effect can be obtained.

Further, in the screen 1 or the filter 7 of FIGS. 1, 2 and 3, it is not always necessary to use the shape memory alloy or the shape memory resin for all the warp threads 4 and the weft threads 5. A shape memory alloy may be used for the specific warp threads 4 and weft threads 5, and a non-shape memory alloy may be used for the other warp threads 4 and weft threads 5. A shape memory resin may be used for the specific warp threads 4 and weft threads 5, and a non-shape memory resin may be used for the other warp threads 4 and weft threads 5. For example, a shape memory alloy or a shape memory resin may be used for the warp threads 4 and the weft threads 5 and a non-shape memory alloy or a non-shape memory resin may be used for the other warp threads 4 and weft threads 5 for each number of meshes. Good. Further, a shape memory alloy or a shape memory resin may be used for all the warp yarns 4, and a non-shape memory alloy or a non-shape memory resin may be used for all the weft yarns 5. Instead of all the warp yarns 4, a shape memory alloy or a shape memory resin may be used for each warp yarn 4 and a non-shape memory alloy or a non-shape memory resin may be used for the other warp yarns 4. On the contrary, a shape memory alloy or a shape memory resin may be used for all the weft threads 5, and a non-shape memory alloy or a non-shape memory resin may be used for all the weft threads 4. A shape memory alloy or a shape memory resin may be used for each weft thread 5 instead of all the weft threads 5, and a non-shape memory alloy or a non-shape memory resin may be used for another weft thread 5. . In short, a shape memory alloy or a non-shape memory resin may be used for at least one of the warp yarn 4 and the weft yarn 5 of the screen 1 or the filter 7. When the shape is woven in a woven state, the warp 4 or the weft 5 made of a shape memory alloy or a shape memory resin recovers its original shape after the deformation, and becomes the woven state. It can be restored and the same effect can be obtained.

As shown in FIG. 4, a stranded wire is formed by several single wires 8, and a shape memory alloy or a shape memory resin is used for all the single wires 8. It is also conceivable to use this as the warp yarn 4 and the weft yarn 5 of the screen 1 or the filter 7 and perform shape memory processing in the woven state. A shape memory alloy or a shape memory resin may be used for a specific single wire 8 of each single wire 8, and a non-shape memory alloy or a non-shape memory resin may be used for another single wire 8.

It is also conceivable to construct the screen 1 or the filter 7 by knitting instead of a woven fabric and use a shape memory alloy or a shape memory resin as the knitting yarn. Then, when the shape memory treatment is performed in the knitted state, the shape of the knitting yarn is restored to its original shape after the deformation, and it is restored to the state when it was woven, and the same action and effect can be obtained. it can.

The invention is not limited to the screen 1 and the filter 7 and may be applied to other woven or knitted fabrics.

[0017]

[Effect of device]

 As described above, according to the present invention, after the warp yarn 4, the weft yarn 5 or the knitting yarn of the woven or knitted fabric is deformed, the warp yarn 4, the weft yarn 5 or the knitting yarn made of the shape memory alloy or the shape memory resin is changed each time. The original shape can be restored, the above-mentioned conventional problems do not occur, and the intended purpose can be achieved.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of this invention.

FIG. 2 is a cross-sectional view showing a warp yarn and a weft yarn of the screen of FIG.

FIG. 3 is a perspective view showing another embodiment.

FIG. 4 is an explanatory diagram showing another embodiment.

[Explanation of symbols]

 1 screen 4 warp 5 weft 7 filter

Claims (2)

[Scope of utility model registration request] 1. A woven fabric characterized by using a shape memory alloy or a shape memory resin for at least one of a warp and a weft, and performing shape memory treatment in a woven state. 2. A knitted fabric characterized by using a shape memory alloy or a shape memory resin as a knitting yarn, and subjecting this to a shape memory treatment in a knitted state.