JPS6130066B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a cloth made of carbon fibers, and the present invention relates to a method for manufacturing cloth made of carbon fibers, and the present invention relates to a method of manufacturing a cloth made of carbon fibers, and the present invention relates to a method of manufacturing a cloth made of carbon fiber, and the method involves fixing the human body to a bed or the like when irradiating the human body with X-rays for the purpose of diagnosing a disease, etc. The object of the present invention is to provide a method for producing a carbon fiber cloth suitable for use as a belt.

In recent years, X-rays have been widely used for the purpose of diagnosing diseases, etc., and in particular when taking tomographic photographs, etc., it is necessary to fix the human body to a bed so that it does not move. In this case, a belt or the like is used to stabilize the human body, but this belt must not block the X-rays and must be as transparent as possible to the X-rays. It also needs to be homogeneous.

FIG. 1 shows an example of a belt suitable for this purpose. Reference numeral 1 denotes a belt, which is made by laminating polyurethane elastic films 3 on both sides of a carbon fiber cloth 2 woven with carbon fiber threads as warp threads 4 and weft threads 5. The carbon fiber cloth 2 is made up of warp threads 4 and weft threads 5 made of carbon fibers, and the warp threads 4 and weft threads 5 are woven in a twill weave.
It is woven with a structure in which the warp and weft have a small number of points, such as satin weave, and either the warp 4 or the weft 5 covers the fabric surface throughout the fabric, and there is a possibility that a see-through will occur at that point. It is woven so that there is no Since X-rays can easily pass through carbon, the carbon fiber cloth 2 has high transparency to X-rays, allowing X-rays to pass through it well like glass to light, allowing clear X-ray photographs to be taken. This makes it possible.

Furthermore, the polyurethane elastic material laminated to the carbon fiber cloth 2 also has high transparency to X-rays, allowing the X-rays to pass through sufficiently and not interfering with the taking of clear X-ray photographs.

By the way, the carbon fiber used for the belt is
Although it is known to have extremely high tensile strength, it has extremely low knot strength and is extremely difficult to weave into cloth. That is,
When the weft yarn is folded back at the selvage during weaving, it is bent at a steep angle, causing the weft yarn to break at the selvage of the fabric. Therefore, conventionally, Figures 2 and 3
As shown in the figure, a rigid linear body 6 such as a metal wire that is thicker than the warp thread 4 is placed along both sides of the selvedge of the warp thread 4 that has been warped during weaving, and the linear body 6 is attached to a carbon fiber. It is fixedly supported on the loom so that it does not move regardless of the winding of the cloth 2, and when weaving by inserting the weft yarn 5, the linear body 6 is regarded as one warp yarn and woven. When the carbon fiber cloth 2 moves forward by winding it up, the linear body 6 slips out from the selvage of the carbon fiber cloth 2, thereby obtaining a carbon fiber cloth 2 with no damage to the selvage. .
In this method, the weft yarn 5 is folded around the thick linear body 6 at the selvage, so it is not folded back at a steep angle, and even carbon fibers with low knot strength are not damaged at the selvage. Sometimes I don't get it.

However, in the carbon fiber cloth 2 obtained in this way, since the linear body 6 woven into the selvage part has been pulled out, the trace remains in the weft loop 7.
It remains. Therefore, when X-rays are irradiated, the amount of X-rays transmitted is different between the loop 7 part and the other parts, and traces of loop 7 may appear on the X-ray photograph, making it difficult to obtain a clear X-ray photograph. There are many.

The present invention was made in view of the above circumstances, and when weaving carbon fiber cloth, the loops 7 formed at the edges are covered with warp yarns, and the amount of X-ray transmitted through the cloth is made constant, thereby producing clear X-ray photographs. The object of the present invention is to provide a method for weaving a carbon fiber cloth that can obtain the following.

FIG. 4 shows the state in which carbon fiber cloth is manufactured according to the present invention. First, the warp yarns 4 of carbon fiber are warped, and the warp yarns 4 are warped so that the density of the warp yarns 4 is increased at the ears on both edges thereof.
Further, on the outside of both ears, as described above, a rigid linear body 6 such as a metal wire that is thicker than the warp threads 4 is arranged and is fixedly supported with respect to the loom.
Next, the carbon fiber cloth 2 is woven by inserting the carbon fiber weft 5 into the warp 4. At this time, as explained in the previous known example, the linear body 6
The weft thread 5 is inserted by regarding it as one of the warp threads. Moreover, at this time, since the density of the warp threads 4 in the selvage part is high, the warp threads 4 are woven in a compressed state in the selvage part. In this way, as the weft yarn 5 is inserted and the carbon fiber cloth 2 is woven, and the woven carbon fiber cloth 2 is advanced while being wound, the linear body 6 is supported by the loom, so that It does not move with the advancement of the carbon fiber cloth 2, and the tip of the linear body 6 is pulled out from the selvage of the carbon fiber cloth 2. As a result, loops 7 are formed at the edges of the carbon fiber cloth 2, but in the present invention, since the density of the warp yarns 4 in the edge portion is increased, the compressed warp yarns 4 in the edge portion are moved in the lateral direction. It slides and moves to the loop 7 part, causing the loop 7 to disappear.

In this embodiment, the structure of the center portion of the carbon fiber cloth 2 is a 2/2 twill weave, which is because the structure of the carbon fiber cloth 2 is transparent when the human body fixation belt 1 is used during X-ray irradiation. In order to avoid the formation of pores, it is preferable to use a weave with a small number of weave points, such as a twill weave or a satin weave, in the belt for the above purpose, but the present invention is not particularly limited to this weave. Further, in the embodiment, the selvage structure is constructed of a plain weave structure in accordance with the conventional method of twill weave structure, but this is not limited to this structure either. Furthermore, in the drawings of the embodiment, a slight gap is formed between the warp yarns 4 and the weft yarns 5, but this is only shown in the drawings to help understand the present invention. ,
Of course, it is not necessary in the present invention,
In the aforementioned belt for fixing the human body during X-ray irradiation, it is rather undesirable to have such a gap.

Since the present invention has such a configuration,
No loops 7 are formed in the edges of the obtained carbon fiber cloth 2, and a homogeneous carbon fiber cloth can be obtained as a whole. Therefore, when this carbon fiber cloth is used as a belt for fixing a human body during X-ray irradiation, there will be no loops forming in the edges of the carbon fiber cloth, and the X-rays will be even and clear. This has the effect of allowing photographs to be taken.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a belt for fixing a human body during X-ray irradiation. FIG. 2 is a plan view showing a state in which a conventional carbon fiber cloth is woven, and FIG. 3 is a cross-sectional view thereof. FIG. 4 is a plan view showing a state in which a carbon fiber cloth is woven according to the present invention. 2... Carbon fiber cloth, 4... Warp, 5... Weft,
6... Linear body, 7... Loop.

Claims (1)

[Claims] 1 Warp the carbon fiber warp so that the density at both selvedges is high, place rigid linear bodies along both sides of the selvedges, and fixedly support the linear bodies against the loom. , when inserting the weft of the carbon fiber yarn, the linear body is regarded as one warp and woven, the woven carbon fiber cloth is wound and extracted from the linear body, and the warp of the high-density selvage is removed. A method for producing a carbon fiber cloth, comprising filling the loop after the filament has been extracted by sliding the filament in the transverse direction.