JPH0718538A - Rope-shaped belt and rope-shaped belt unit - Google Patents

Abstract

PURPOSE:To obtain a rope-shaped belt made of a narrow fabric having an almost circular cross section the inside of which is filled and a rope-shaped belt unit having flat belt parts at both the sides. CONSTITUTION:This rope-shaped belt or rope-shaped belt unit is composed of a narrow fabric 10 made of synthetic fiber weft and warp yarns 6 and 7 and has a structure in which the core yarns 5 are woven into a bag-shaped wave. Further, the bag-shaped wave part 22 is designed so as to have <=0.700 warp yarn density coefficient and this belt or belt unit involves the wave part as the body part 2, a flat belt part 4 and a joint part 3 joining the body part 2 and the flat belt part 4. The flat belt part 4 has a wave in which a part or the whole of the core yarns 5 of the body part 2, together with the warp yarns 6 of the bag-shaped wave part of the body part 2, are crossed with weft yarns and its width is >=2.0 times the width (W) of the body part 2. In addition, the joint part 3 is woven while gradually changing the width and also changing the wave on plural stages so that the wave may be proceeded to that of the body part 2 or the belt part 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a rope-like woven fabric that can replace ropes or braids used in various industries, and is further used as a safety belt for working in high places and as a suspender for flexible containers. The present invention relates to a narrow woven fabric that can replace a rope or a braid.

[0002]

2. Description of the Related Art Conventionally, as long and thin fiber products, there are two types, one having a round appearance such as a round tie string or rope, and one having a flat band shape such as a flat tie string or a tape / belt. Has been used for. However, in recent years, some proposals have been made to make a part of the fabric into a round string-like appearance even though it is a woven fabric.

One of them is Japanese Patent Application No. Sho 62-148717 "Tape with a round cord", in which the tape portion is a double bag weave containing a core thread, and the round string portion is a multiple bag weave, and an outer cylinder part and an inner cylinder. A structure is shown in which the parts are joined by weft threads. However, as the name "cylindrical part" indicates, even if it is a round string, it does not become a rope-shaped woven fabric with a full interior. Another known example is Jikkou 62-14137 "Narrow width fabric". This has a narrow flat weave design and a circular weave design. In the circular weave design, when the warp yarns of the outer peripheral portion are woven with the weft yarns, a part of the warp yarns serves as core yarns.

However, this known example is substantially different from the constitution of the present application in the following points, and this technique cannot be adopted for the purpose of the present invention. That is, the above-mentioned Jitsuko Sho 62-1
As specified in the specification of No. 4137, "a part of the warp yarns is removed from the weaving design and woven so that the outer and inner warp yarns are woven so that the inner yarns are smaller". However, it is not the case that the total fineness of the core yarn is 1.5 times or more the total fineness of the warp yarns of the bag-like woven structure portion as in the present invention. As will be described later in the specification of the present invention, the core yarn woven into the bag-shaped woven structure portion needs to have a minimum amount of the above-described amount. Is insufficient and the cross section does not become round.

Therefore, it must be said that it is very doubtful that "the circular weave portion has a rope-like interior and a round cross section" in the above-mentioned known example. It is difficult to determine since no specific example is described, but the reason for this will be explained. For example, FIGS. It shows a round cord portion in which the second layer and the binding yarn are woven in the core, and the core yarn is only one-third of the ground yarn and a little binding yarn. According to the judgment of those skilled in the art, it is unlikely that a product having such a structure with a round cross section can be used until now. There are various other problems to be solved, but they are not explained.

[0006] In addition, the following are related to rope products. That is, in a safety belt for work at high places, one end of the rope is attached to a metal fitting provided on the safety belt, and a hook or a carabiner is attached to the other end. or,
The rope of the hanging hand of the flexible container is connected to the metal fittings attached to the container body. In connection with these ropes and metal fittings, it is usual to loosen the ends of the ropes and assemble the strands into the rope body, so-called "satsuma processing", by hand. Since this processing requires skill and is a work that requires a great deal of power, it has become difficult to secure workers in recent years. Although narrow woven fabrics can be sewn and can be easily connected by sewing, they are not adopted because they are inferior to ropes in terms of handling because they are relatively wide.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rope-shaped belt having a substantially circular cross-section and a substantial interior, which can replace braids or ropes, and the rope-shaped belt can be used as a main body. Another object of the present invention is to provide a rope-shaped belt unit capable of connecting to a metal fitting or the like by sewing, by simultaneously weaving a belt portion having an appropriate width and thickness at its ends.

The terms used in the specification of the present invention are defined as follows. That is, the "rope belt" means
A narrow-width woven fabric refers to a rope-shaped woven fabric, and a woven fabric including a rope-shaped belt portion, a flat belt-shaped portion, and a connecting portion that connects these portions is referred to as a “rope-shaped belt unit”.
The rope-shaped portion of the "rope-shaped belt unit" is hereinafter referred to as a "main body portion", but the "main body portion" and the "rope-shaped belt" have substantially the same configuration.

More specifically, the present inventors
In Japanese Patent Application No. 4-272842 "Thick Belt and Manufacturing Apparatus Therefor", "Providing a narrow width fabric having a thickness and a breaking strength which exceeds the conventional common sense for a certain width. In addition, we propose "a thick belt that is as close as possible to the shape of a rope" and a method and means for "weaving the end of the belt into a wide width and an appropriate thickness so that it can be sewn". is doing.

The present invention is characterized in that the weaving design is four layers or more by using the two shuttles of the shuttle loom,
As shown in Example 1, a high strength of 6100 Kgf was realized despite the narrow width of 23.5 mm. On the other hand, the present invention woven a product having substantially the same shape as the above-mentioned invention and corresponding to a relatively low required strength to the above-mentioned invention by using a general one-cylinder shuttle loom or one-needle needle loom. The purpose is to provide.

[0011]

In order to achieve the above-mentioned object, the present invention adopts the technical constitution as described below. That is, the first aspect of the present invention is a narrow woven fabric composed of synthetic fiber warp yarns and weft yarns, and has a bag-like woven structure portion forming an outer peripheral portion thereof, and is arranged in the bag-shaped woven structure portion. And the total fineness of the core yarn is 1.5 times or more the total fineness of the warp yarns of the bag-shaped woven structure part. Is a rope-shaped belt having a warp density coefficient defined in the present invention set to 0.700 or less.

A second aspect of the present invention is a narrow woven fabric comprising synthetic fiber warp yarns and weft yarns, wherein the rope-like belt according to claim 1 is a main body portion in the longitudinal direction thereof, and the flat belt portion and the main body portion are The flat belt portion has connecting portions for connecting the flat belt portions, each of which is arranged with a predetermined length, and the flat belt portion, together with the warp yarn of the bag-like woven structure portion of the main body portion, of the core yarn of the main body portion. It has a woven structure in which a part or all of it is interlaced with wefts, and has a width that is at least 2.0 times the width of the main body. Further, the connecting portion gradually increases its woven width. While changing it, change the woven structure in multiple stages,
The rope-shaped belt unit is configured to be transferred to the woven structure of the main body portion or the flat belt portion.

Since this rope-shaped belt unit has the flat belt portion which is continuously woven through the connecting portion at the front and rear of the rope-shaped belt as the main body portion,
The flat belt portion is fixed to another support, or the flat belt portion is sewn to each other to facilitate the attachment of the main body portion. A third aspect of the present invention is that the rope-shaped belt or at least the main body of the rope-shaped belt unit is subjected to heat setting processing after weaving to shrink the weft or cure a predetermined synthetic resin impregnated. Then, after improving the appearance texture, improving the tensile strength, etc., it is desirable to perform a molding process using an appropriate molding heat treatment apparatus.

The molding in the molding heat treatment apparatus is composed of, for example, two parts facing each other, and the contact surfaces of the respective parts facing each other are formed by the rope-shaped belt or at least the rope-shaped belt unit. A groove having a predetermined shape through which the main body can be inserted is provided, and each of the parts is provided with temperature control means for adjusting the temperature of the part, and at the same time, pressing force is applied to each other. It is desirable to have a pressing force varying means capable of adjusting the pressing force, and further a pressing force duration adjusting means for the component.

[0015]

Since the rope-like belt (main body of the rope-like belt unit) according to the present invention has the above-mentioned technical structure, the core yarns are gathered together and integrated, and the surface layer has a warp density coefficient. Since the weft yarns are made low and the weft yarns have a large room for shrinkage so that the core yarns can be easily wrapped, when the heat treatment is performed after weaving, a substantially circular cross section with a solid interior can be obtained. In the flat belt part of the rope-shaped belt unit, the warp yarn woven as the core yarn in the main body is woven on the surface and the warp density coefficient is high, so the width tends to widen and the width after heat treatment will also shrink with a small shrinkage ratio. An advantageous shape is obtained during processing.

[0016] When the rope-shaped belt (main body of the rope-shaped belt unit) is heat-treated by the molding heat treatment apparatus, it is forcibly compressed, so that it cannot be obtained by ordinary heat-set processing, and the appearance is elegant and the packing density is high. A rope-shaped belt having a circular cross section (main body of the rope-shaped belt unit) can be used.

[0017]

EXAMPLES Specific examples of the rope-shaped belt and the rope-shaped belt unit according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing an example of the overall structure of a rope-shaped belt unit according to the present invention. In the figure, a narrow fabric 10 composed of synthetic fiber warps and wefts has a predetermined lengthwise direction. A rope-shaped belt unit 1 having a main body portion 2, a flat belt portion 4, and a connecting portion 3 for connecting the main body portion 2 and the flat belt portion 4, which are arranged in the length of the main body portion. 2 is a hollow weave portion 22
The core yarn 5 is woven into the core yarn 5, and the total fineness of the core yarn 5 is 1.
5 times or more, and the hollow weave portion is set to have a warp density coefficient of 0.700 or less as defined in the present invention, and the flat belt portion 4 has the main body portion 2 It has a woven structure in which a part or all of the core yarn 5 of the main body portion 2 is mixed with the weft yarn together with the warp yarn 6 of the hollow weave portion, and the width is at least 2.0 times or more the width W of the main body portion 2. Further, the connecting portion 3 changes the weaving structure in a plurality of stages while gradually changing the weaving width of the weaving structure,
It is configured so as to be transferred to the woven structure of the main body portion or the flat belt portion.

That is, the rope-shaped belt unit according to the present invention as shown in FIG. 1 is woven by a single shuttle loom or a single needle needle loom. A mechanism and a mechanism for varying the number of wefts driven in are required. In the case of a needle loom, a knitting needle left-right movement mechanism that interlocks with changes in weaving width is also required.
The above-described mechanism and device are attached to the loom manufacturer in advance when ordered and delivered if desired, and are not new mechanisms and devices.

In the case of a shuttle loom, there are two types of shuttle movement methods, a slide hook method and a rack and pinion method. When the total denier of warp per unit size is relatively large as compared with a normal belt as in the present application. Is a rack and pinion system or Japanese Patent Application No. 4-272842
The slide hook method with the grooved sled, which was announced in, is desirable.

A loom for weaving a fabric as shown in the figure,
The winding roller or the press roller is Japanese Patent Application No. 4-2.
The grooved roller disclosed in 72842 is preferable. FIG. 2 is a perspective view of a rope-shaped belt (main body of the rope-shaped belt unit). It is composed of a hollow weave portion 22 woven in a bag shape with a part of the warp yarns 6 and the weft yarns 7, and a core yarn group 5 fully arranged inside thereof.

Among all the warp yarns, the distribution ratio of the warp yarns 6 distributed to the hollow weave portion and the warp yarns 5 serving as the core yarns is such that the cross-sectional shape of the processed rope belt (main body of the rope belt unit) is substantially circular. Since it is an important element and is the basis of the present invention, it will be specifically described below. The meaning of the warp density coefficient defined by the present inventors as the data necessary for designing the woven fabric and the method of obtaining the coefficient are described below.

First, for the warp density coefficient according to the present invention, it is necessary to specify the thickness of the yarn used for the woven fabric. In the present application, the thickness of the yarn used is as follows. Calculate using a formula. In the case of filament yarn, 0.0119√ (denier ÷ specific gravity of fiber) = thread diameter (mm) Calculation example In the case of nylon 1680D, it is calculated as follows.

0.0119√ (1680 ÷ 1.14)
= 0.4568 (mm) In the case of a spun yarn, the diameter factor is calculated as follows: (Diameter factor) (1 ÷ √count) = thread diameter (mm) Diameter factor = 1.1125 ÷ √fiber specific gravity

The basis for calculating the warp density coefficient is the number of warps that can theoretically be arranged in parallel in a predetermined unit width, and the number of parallel threads = unit width / thread diameter is expressed as the theoretical number of parallel threads. In the present application, the warp density coefficient is defined as 1.000. The actual warp density coefficient uses a different calculation formula depending on the weave design. The case of plain weave and 2/2 twill weave will be specifically described below as an example.

In the case of plain weave, the warp has a structure in which between one weft and the next weft, half of each warp is woven from top to bottom and the other half of the warp is woven from bottom to top.
Therefore, all the warp yarns are lined up between the weft yarns. Therefore, when an example of a woven fabric having an overall width of 50 mm is warp nylon 1680D, 50 mm ÷ 0.4568 mm = 109.5
The warp density coefficient of the book is calculated to be 1.005.

In the case of the 2/2 twill weave, as in the case of the plain weave, when looking between the wefts, one out of one set of four complete warp yarns goes down and one goes up and the other two wefts. It doesn't intersect. Therefore, since only half of the threads are always crossed, the number of parallel threads of the unit width is doubled. An example of a woven fabric having an overall width of 50 mm with warp nylon 1680D is 50 mm ÷ 0.
4568 mm × 2 = 218.9 219 yarns and a warp density coefficient of 1.000 is calculated.

In the case of a plain weave or a 2/2 twill multi-layered fabric, each layer is calculated in the same manner. Therefore, if two layers have the same structure and the same yarn, the number of double layers is the unit. It is the number of parallel lines. The reason for the simple calculation is that since the binding yarn is often woven in the multi-layer fabric, the binding yarn also needs to be calculated based on the structure and the yarn and incorporated. In most cases, the binding yarn has a fineness and a small number, and since it does not become a large variable factor, a complicated description is omitted. Since the core yarn does not intersect with the weft yarn, it is excluded from the warp density coefficient.

Other data used as data are as follows. These are the data of the decomposition results of our own mass-produced products, prototypes, and products of other companies that the inventors have accumulated over a long period of time. That is, product material, woven structure, yarn fineness, number of threads, number of threads, thickness and width of raw machine and set product,
The weight and disassembled length of the thread according to the purpose of use (eg ground thread, selvage thread, etc.),
The following data calculated from etc. are used.

(1) Cross-sectional density coefficient (g / mm2) = product weight g / cross-sectional area mm2 (2) Shrinkage rate (thickness and width) when set processing of raw machinery
And change in weight ratio and apparent fineness (3) Warp density coefficient and weft density coefficient (4) Tensile utilization ratio (%) = Tensile tenacity / (Warp tenacity x Number of warp threads) x 100

Based on the above data, distribution and design of the bag portion and the core yarn portion of the main body portion are performed according to the customer's request in the following procedure. It is necessary to design the belt part and the connection part while considering the appearance of each.

(1) From the required tenacity, the total fineness of all warps is calculated in consideration of tenacity utilization. (2) The diameter of the yarn, which is the total fineness of all the warp yarns, is calculated to estimate the finished thickness of the finished product. (3) The outer peripheral length is calculated from the assumed finished thickness or the customer-requested thickness. (4) When the required strength is relatively low and the required thickness is prioritized over the required strength, other core yarns or yarns different from the core yarns may be used as the core yarn in order to increase the volume. However, as a general rule, it is desirable to use this yarn as the core yarn even in the belt portion. (5) In the case where a strong one is required or for other reasons, a monofilament may be added to the core yarn in the same manner as the above item. However, as a general rule, it is desirable to use this yarn as the core yarn even in the flat belt portion. It is desirable to use a monofilament in combination in fields where it is necessary to dry it quickly after soaking it in water. (6) Determine the structure of the hollow weave portion and the fineness of the yarn to be used. (7) The warp density coefficient is assumed from the design and yarn fineness of item 6 with respect to the outer peripheral length calculated in item 3, and the number is provisionally determined. Unless the warp density coefficient is set to 0.700 or less, the shrinkage in the width direction is insufficient in the post-processing, and the core yarn has many voids. (8) The yarn diameter of the entire core yarn is calculated from the total fineness of the core yarn excluding the warp yarns of the hollow weave portion from all the warp yarns. When the required thickness is prioritized, the total fineness of the core yarns is calculated backward. (9) Estimate the bulge of the core yarn due to the post-processing and calculate again how many mm the outer peripheral length of the bag portion will be. (10) By comparing the calculated warp density, material, texture, fineness, weft material, fineness, number of threads, etc. with past accumulated data, the expected fabric thickness of the bag part and weft shrinkage rate To estimate. Judge whether these are appropriate as the bag part that wraps the core yarn, and if not, recalculate and correct.

Regarding the warp ratio of the bag portion and the core yarn portion of the rope-shaped belt (main body of the rope-shaped belt unit), the thicker the finished product is, the larger the distribution of the core yarn becomes. It is necessary to distribute a core yarn having a total fineness of 1.5 with respect to a total fineness of 1 of the partial weaving partial warp. By adjusting the distribution of the core yarn, it is possible to change the hardness of the rope belt in the same manner as the twist is adjusted by the rope to change the hardness.

It should be noted that strictly speaking, the comparison is not the comparison of the total fineness itself but the comparison of the total thickness calculated from the fineness. Jitsuko Sho 62-1413 mentioned in the prior art
7 has no description of various requirements as described above,
"The circular weave part is rope-shaped and the cross section is round"
That is extremely suspicious, as the inventors previously stated was based on the above requirements.

FIG. 3 is a sectional view of the flat belt portion 4. That is, the cross-sectional structure of the flat belt portion 4 of the rope-shaped belt unit 1 according to the present invention is, as is clear from FIG. 3, formed by weaving a hollow weave portion with the warp yarns 61 and the weft yarns 71 and having a predetermined number of core yarns 5 therein. Are arranged. In the figure,
Reference numeral 51 is a binding yarn that joins the woven structure portions on both the front and back sides that form the hollow weave portion.

The flat belt portion 4 is usually sewn when used as a product. From the viewpoint of sewing processing and sewing strength after processing, it is necessary that the thickness and width of the sewing surface are appropriate, and further, if the number of cross points between the warp and the weft is small, the sewing strength becomes insufficient, which is not preferable. In the flat belt portion 4, the main body portion bag tissue portion 2 in the present invention described above.
When the ratio of the total fineness of the core yarn 5 to the total fineness of the warp yarn 6 of 2 is relatively close, about half of the ground yarn is woven with the warp yarn of the hollow weave portion 22 of the main body portion 2 in the flat belt portion, and the other half is halved. Is woven with the warp that was woven as the core yarn 5 in the main body 2. The remaining yarn of the core yarn 5 of the main body portion 2 is woven as it is as the core yarn 5 of the belt portion 4 or a part thereof is used as a binding yarn.

When the ratio of the core yarn 5 of the main body 2 is relatively large, about one-third of the ground warp of the flat belt 4 is woven with the warp 6 of the hollow weave portion 22 of the main body 2 and the rest. About two-thirds is preferably woven with the warp threads 5 that were woven as the core threads 5 in the main body 2. Of course, the ratio of weaving the core yarn 5 on the surface is not limited to the above, and can be freely changed from the weaving structure and the appearance. In any case, the double weave is preferable as the weave design when the core yarn is inserted, but the triple weave may be used. If it is necessary to widen the width of the flat belt portion 4, a double weave may be further used as a single weave.

The above-mentioned construction is carried out so that the flat belt portion 4 has a sectional shape suitable for sewing. That is, when the core yarn 5 of the main body portion 2 is woven on the surface of the flat belt portion 4, the surface warp inevitably increases and the width must be widened, and the flat belt portion 4 has a cross-sectional shape suitable for sewing. . In order to make the thickness and width of the flat belt portion 4 suitable for sewing, the change in width must be at least twice the width (that is, diameter) of the main body 2.

FIGS. 4A to 4E show an example of the organization chart of the connecting portion 3 between the main body portion 2 and the flat belt portion 4.
In the first step of shifting from the main body portion 2 to the flat belt portion 4, the width of the reed is expanded with the configuration of the main body portion 2, and then the core yarn 5 is woven on the surface in the second step. For example, when the weave design of the bag portion 22 is 1/1 plain weave, the core yarn 5 is inserted between two adjacent warp yarns 6 forming the bag and two adjacent yarns.
If the core yarn is regularly woven between the warp yarns of the book and the bag portion 22, the appearance of the boundary between the book portion and the bag portion 22 is woven without being significantly damaged.

In the third stage, when the width is further gradually increased to approach the set width and the remaining part of the core yarn is woven as the binding yarn, the width is easily widened. When there are many core yarns, when weaving the core yarns as the flat belt portion ground yarns, another stage may be provided between the second stage and the third stage and the weaving may be conducted twice. In that case, the third step is the fourth step.

Although the above steps may be necessary in some cases,
One or two of them, for example the first and fourth steps, may be omitted. However, if the transition is not performed in at least two stages, a portion where the width and the thickness of the connection portion change extremely is generated, which is not preferable. At the connecting portion, the number of wefts driven is usually changed at the same time. The above has described the case of shifting from the main body portion 2 to the flat belt portion 4. However, when shifting from the flat belt portion 4 to the main body portion 2, the shift is performed through the above-described reverse steps.

How to weave the connecting portion 3 is an important issue next to the weaving of the main body portion 2 so as not to impair the change in width and the appearance, but the actual technique mentioned in the prior art 62-.
No. 14137 does not describe the connecting means for the flat weave design portion and the circular weave design portion. Similarly, Japanese Patent Application No. 62-148717, which is also referred to in the prior art, has no description about the connecting portion.

Here, as an example, the woven structure of the connecting portion 3 in the rope-shaped belt unit according to the present invention is shown in FIG.
~ It will be described in detail with reference to FIG. Figure 4
(A) is the rope-shaped belt unit 1 according to the present invention.
FIG. 3 is a woven structure diagram showing an example of a woven structure of the main body section 2 of FIG. That is, the A-1 portion and A-7 of the woven structure chart in FIG. 4 (A)
The portion "1" indicates the structure that constitutes the hollow weave portion 22 of the main body portion 2, and includes the front warp F ground, the back warp B ground, and the front weft F
1, F 3, F 5, F 7, and back wefts B 2, B 4, B
Compose a 2/2 twill weave with 6 and 8
-2 part, A-3 part, A-4 part, A-5 part and A
A rope-like structure having a circular cross section in which the core yarns 1 to 3 of the -6 portion are filled and arranged in the hollow weave portion 22 is obtained.

Next, the structure of the connecting portion 3 following the main body portion 2 according to the present invention will be described with reference to FIGS. 4 (B) to 4 (D). In the rope-shaped belt unit 1 according to the present invention. Then, in the process of changing from the main body part 2 to the flat belt part 4 and vice versa, the woven structure having a substantially circular cross-sectional shape is changed to the woven structure having a flat cross-sectional shape. It is necessary, and it is desirable that such a change is configured so as to change gradually and gradually in consideration of the appearance while avoiding a sudden change.

Therefore, in one specific example of the rope-shaped belt unit 1 according to the present invention, the change in the woven structure of the connecting portion 3 is divided into three stages as shown in FIG. It is configured to change the cross section of the structure. That is, in the first step, a woven structure diagram of the connecting portion 3-1 which is directly connected to the main body portion 2 is shown in FIG.
The portion -1 and the portion B-7 show the structure that constitutes the hollow plain weave portion of the 1/1 plain weave, and the front warp F fabric, the back warp B fabric,
The front wefts F1 and F3 and the back wefts B2 and B4 form a 1/1 plain weave, and the A-2 portion and A-
Of the core yarns 1 to 3 of the 3 portion, the A-4 portion, the A-5 portion, and the A-6 portion, a part of the core yarn A-5 portion is exposed in the hollow weave portion, and the hollow weave portion of the hollow weave portion is exposed. It is involved in weaving.

Therefore, in such a specific example, the A-5
Divide the core yarn 1 arranged in the part into two groups,
A part thereof is used as the front warp F base, and the remaining core yarn is used as the back warp B base. As a result, the weaving width of the connecting portion 3-1 is inevitably expanded because the core yarn 1 arranged at the A-5 portion is added to the hollow weave structure.

Next, the connecting portion 3 in the connecting portion 3
The connection portion 3-2 following -1 is to be woven, but the woven structure diagram of the connection portion 3-2 is as shown in FIG. The core yarn 1 arranged is shown in FIG.
Divide into two groups as shown in (B),
A part of the core yarn 1 is used as the front warp yarn F and the remaining core yarn is used as the back warp yarn B fabric to expose the core yarn 1 to the hollow weave portion and participate in weaving of the hollow weave portion. It is a thing.

As a result, the weaving width of the connecting portion 3-2 inevitably further expands because the core yarn 1 arranged in the A-3 portion is added to the hollow weave structure, and The appearance of the woven fabric is not impaired and can be transferred naturally. Then, subsequently to the connecting portion 3-2, the connecting portion 3-3 for directly connecting the connecting portion 3 and the flat belt portion 4 is woven.

A woven structure diagram of the connecting portion 3-3 is shown in FIG. 4 (D).
C-2 portion, C-4 portion, and C
-A part of the core yarns 2 and 3 of the 6 parts is used as a binding yarn in the hollow weave portion, whereby the hollow weave portion in the connecting portion 3-3 is used. The front texture portion and the back texture portion are firmly joined and a flat shape is fixedly formed.

Of course, at this stage, the connection part 3-
The woven width of No. 2 is finally expanded to a woven width that matches the predetermined woven width of the flat belt portion 4 and can be directly connected to the weaving of the main body portion 4. FIG. 4 (E) shows a woven structure diagram of the flat belt portion 4 of the rope-shaped belt unit 1 according to the present invention, and shows the connection portion as shown in FIG. 4 (D). It has a similar weave structure chart to that of 3-3.

Next, the heat setting process after weaving will be described. In the present invention, the heat setting process means performing a heat treatment process on a woven fabric which is usually performed as one of finishing processes by hot air or wet heat. In the rope-shaped belt 2 or the main body portion 2 of the rope-shaped belt unit of the present invention, the contraction of the weft is an important factor. The rope-shaped belt (main body of the rope-shaped belt unit) just after weaving has an elliptical cross-sectional shape, but the weft shrinks during heat setting, resulting in a substantially circular cross-section.

JIS L1013 "Chemical fiber filament yarn test method" 7.15 defines the hot water shrinkage percentage measuring method and the dry heat shrinkage percentage measuring method, and the test results based on these are reported by each yarn manufacturer. ing. Of the fibers of the same type, it is desirable to use, as a weft, a type of yarn having a large shrinkage test result. Even if the same type of weft yarn having a large shrinkage factor is used, the shrinkage factor in the transverse direction of the woven fabric varies depending on the warp density coefficient described in the present application. However, since it is possible to estimate how much shrinkage can be expected in the fabric structure by the warp density calculation and the accumulated data of the present inventors,
By using this as a judgment material, it is possible to easily form a woven structure having a large shrinkage.

In the flat belt portion, even if weft yarns having a large shrinkage ratio are used, the warp density coefficient is large, so that the shrinkage is extremely small. If the tension at the time of heat setting is performed in a nearly free state, the main body part has a substantially circular cross-sectional shape that waits for hardness that is practically acceptable. When it is necessary to make the hardness of the main body even harder, when performing normal heat setting as described above, or by dipping in a synthetic resin liquid before drying and heat treatment before the next molding heat treatment, heat treatment to fix it. By doing so, it is possible to make it hard. The synthetic resin used is selected from urethane, melamine, vinyl acrylate, and the like.

Next, the molding heat treatment method newly adopted in the present invention will be described. In the present invention, when it is desired to increase the packing density of the rope-shaped belt (the main body of the rope-shaped belt unit) as well as the hardness on feel, a pair of press dies or rollers having semicircular grooves of a predetermined size. It is achieved by preparing the above, and heating and sandwiching the main body 2 of the rope-shaped belt unit after heat setting or the resin-processed rope-shaped belt (main body of the rope-shaped belt unit) in the groove to apply pressure. To be done. In the present invention, this type of processing method is called forming heat treatment processing.

Further, to describe the example of the processing apparatus in detail, the mold, the roller and the like have a built-in heating device so that the temperature can be controlled. One mold or roller is fixed to the main body of the device, and the other mold or roller is attached to the device that moves to this mold or roller to apply pressure, and the device has a pressure gauge. Is included. A timer is built in so that you can also set the time to apply pressure.

Of course, the mold, the roller and the like are designed to be replaceable according to the thickness and shape of the product to be processed. The processing conditions are set according to the material of the processed product, the thickness, the raw yarn type, the warp density coefficient, the temperature of the mold or roller,
Set the pressing force and pressure duration to process. The product after the heat treatment for molding performed in this manner has a completely circular cross section, a higher packing density, and a smoother surface appearance than the ordinary heat-set product, and is particularly elegant.

In addition to the above-mentioned means, as another means of molding heat treatment, the groove of a pair of molds is made to have a large circular shape at the entrance to gradually narrow the diameter to reach the exit, and heat treatment is carried out by passing through the groove. There is also a method of applying. Although the finished cross section of the product has been described above as a circular shape, the shape is not limited to a circular shape and may be an elliptical shape or a bale shape if necessary.

The method of processing by this resin processing and molding heat treatment is not limited to the rope-shaped belt (main body of the rope-shaped belt unit) 2 according to the present invention, but Japanese Patent Application No. 4-27284.
It is also effective for processing rope substitute belts such as the "thick belt and its manufacturing device" shown in 2.

Specific examples of the rope-shaped belt unit 1 according to the present invention will be described below. Example 1 The target of the rope-shaped belt unit of this example is a strength of 4100 kgf or more and the diameter of the main body is 10 mm. Composition of the main body 2 The weave structure is 2/2 twill double weave Ground yarn Nylon 1680d / 2 with 2 aligned 28 core yarns 1 Nylon 1680d / 2 with 2 aligned 48 yarns 2 Nylon 1680d / 2 19 This core thread 3 Nylon 1680d / 1 18 threads Weft polyester 1000d / 1 34 picks / 3cm Entangled thread Polyester 1000d / 1 1 thread Total yarn denier is 188160d, Core yarn total denier is 416640d (2.2 times the original yarn)

The reason why polyester was used for the weft yarn and the entangled yarn is that a raw yarn type having a known dry heat shrinkage ratio was selected in order to perform heat setting processing by dry heat treatment. Shrinkage rate of 150 degrees 30 minutes is 14.
5% yarn was used. The loom uses a needle loom,
The raw fabric woven with the above yarn configuration has the following specifications. (1) The cross section is elliptical, the central thickness is 7.2 mm, and the width is 1
6.8 mm, outer peripheral length is 40 mm (2) The warp density coefficient of the ground yarn is 0.538.

First stage of connection part As shown in FIG. 4 (B), the weave design is 1/1 bag-weaving, and first, while expanding the reed width, two front surface yarns and two backing yarns of the main body 2 are formed. Each half, 24 half of the core yarn 1 is woven on both sides so as to be sandwiched by two. Weave by gradually reducing the number of weft threads.

Second stage of connecting portion As shown in FIG. 4 (C), the remaining half of the core yarn 1, that is, 24 yarns, is similarly woven on both front and back surfaces. During this period, the width of the weft is being expanded, and the number of weft threads is gradually reduced.

Third stage of connecting portion As shown in FIG. 4 (D), the core yarn 3 is used as a binding yarn to bind both front and back surfaces. The core yarn 2 remains the core yarn here as well.
Reeds are still expanding, and the number of drives is still decreasing. Constitution of the belt part The woven structure is 1/1 plain double woven ground yarn Nylon 1680d / 2 2 pieces are aligned and aligned 76 pieces Core yarn Nylon 1680d / 2 19 pieces Hanging thread Nylon 1680d / 1 18 pieces Weft polyester 1000d / 1 19. 5 picks / 3 cm Entangled polyester 1000d / 1 1 piece Ground yarn total denier is 510720d Core yarn total denier is 63840d

In the third step of the connecting portion, the above-mentioned thread construction is transferred,
The woven raw fabric has the following specifications. (1) The cross section is rectangular, the thickness is 2.9 mm, and the width is 48.4 mm. (2) The warp density coefficient of the ground yarn and the hanging yarn is 1.099 (3) The weight is 82.4 g / m. The process proceeds to the main body part after a process reverse to that of the third, second and first steps.

Weaving was performed by repeating the above steps.
The product that was heat-set after weaving had the following specifications and physical properties. (1) The cross section of the main body is almost circular and the diameter is 11.5 mm, which is slightly softer than the rope, but is practically acceptable. (2) The flat belt had a thickness of 2.7 mm and a width of 46.4 mm. (3) Tensile strength is 4435 Kgf.

Heat setting processing and resin processing were carried out under the following conditions. (1) Immerse a raw machine in a liquid of 250 g of urethane resin / liter and squeeze the liquid. (2) After drying at 120 degrees / 5 minutes, it was cured at 160 degrees / 3 minutes. Due to the effect of the resin, it was possible to make the hardness almost the same as the rope.

The product after resin processing was subjected to molding heat treatment under the following conditions. (1) The mold used is a pair of upper and lower molds in which a semicircular groove having a diameter of 10 mm is carved. (2) The mold temperature was set to 160 degrees. (3) The pressing force was set to 70 Kgf. (4) The pressure duration was set to 40 seconds.

The product body after the heat treatment for molding had a round cross section and a diameter of 10 mm, and the shape did not change even if it was gripped by hand.

Example 2 A polypropylene thread (extending material) is used as a part of the core thread, aiming for a body diameter of 12 mm. Composition of the main body Weave structure is 2/2 twill double weave Ground yarn Nylon 1680d / 2 with 2 aligned 36 cores 1 Nylon 1680d / 2 with 2 aligned 64 cores 2 Polypropylene 680d / 2 92 Core thread 3 Nylon 1680d / 1 24 threads Weft polyester 1000d / 1 34 picks / 3cm Entangled thread polyester 1000d / 1 1 thread Ground yarn total denier is 241920d Core yarn total denier is 595520d (2.5 times the ground thread) Polypropylene yarn 1251 to increase volume
20d was used. (This is 15 for nylon thread.
Polyester was used for the weft yarn and the entangled yarn, because the raw yarn type with a known dry heat shrinkage ratio was selected to perform the heat setting process by the dry heat treatment. According to the manufacturer's report, a yarn having a shrinkage rate of 14.5% at 150 degrees and 30 minutes was used.

A needle loom is used as the loom, and the raw weaving machine woven with the above yarn structure has the following specifications. (1) The cross section is elliptical, the thickness of the central part is 7.5 mm, and the width is 1
7.4mm, outer circumference length is 42mm (2) The warp density coefficient of the ground yarn is 0.559

First step of connecting portion As shown in FIG. 4 (B), the weaving design is 1/1 bag-weaving, and first, while expanding the reed width, every two front and back yarns constituting the main body are formed. Weaving is done on both the front and back sides so that two half of the core yarn 1 is sandwiched by two. Weave by gradually reducing the number of weft threads.

Second stage of connecting portion As shown in FIG. 4C, the remaining half of the core yarn 1, 32 yarns, are similarly woven on both front and back surfaces. During this period, the width of the weft is being expanded, and the number of weft threads is gradually reduced.

Third Stage of Connecting Portion As shown in FIG. 4 (D), the core yarn 3 is used as a binding yarn to bind both front and back surfaces. The core yarn 2 remains the core yarn here as well.
Reeds are still expanding, and the number of drives is still decreasing. Composition of the belt part The weave structure is 1/1 plain double woven ground yarn Nylon 1680d / 2 2 pieces aligned 100 core yarn polypropylene 680d / 2 92 strands nylon 1680d / 1 24 weft polyester 1000d / 1 19. 5 picks / 3cm Entangled polyester 1000d / 1 1 piece Ground yarn total denier 672,000d Core yarn total denier 125120d

In the third step of the connecting portion, the above-mentioned thread structure is transferred,
The woven raw fabric has the following specifications. (1) The cross section is rectangular, the thickness is 2.9 mm, the width is 60.0 mm (2) The warp density coefficient of the ground yarn and the hanging yarn is 1.168 (3) Weight is 115.6 g / m The process proceeds to the main body part after a process reverse to that of the third, second and first steps.

Weaving was performed by repeating the above steps.
The product that was heat-set after weaving had the following specifications and physical properties. (1) The cross section of the main body is almost circular and the diameter is 13.2 mm, which is slightly softer than the rope, but is practically acceptable. (2) The belt portion had a thickness of 2.7 mm and a width of 57.5 mm. (3) Tensile strength is 5500 Kgf.

Heat set processing and resin processing were carried out under the following conditions. (1) Dip a raw machine in a liquid of 250 g of urethane resin / liter and squeeze the liquid. (2) After drying at 120 degrees / 5 minutes, it was cured at 160 degrees / 3 minutes. Due to the effect of the resin, it was possible to make the hardness almost the same as the rope.

The product after resin processing was subjected to molding heat treatment under the following conditions. (1) The mold used is a pair of upper and lower molds in which a semicircular groove having a diameter of 12 mm is carved. (2) The mold temperature was set to 160 degrees. (3) The pressing force was set to 70 Kgf. (4) The pressure duration was set to 40 seconds.

After the molding heat treatment, the product body 2 had a round cross section and a diameter of 12 mm, and the shape did not change even if it was gripped by hand. The above embodiments have shown the case of the rope-shaped belt unit, but the rope-shaped belt alone is omitted because it can be easily analogized by the above-mentioned embodiments.

Comparative Example As shown in FIG. 5 and FIG.
Since the ratio of the bag portion to the core yarn portion is easy to understand in FIGS. 9 and 10 of 14137, the person skilled in the art will reproduce this as faithfully as possible. Structure of belt Weave structure is 1/1 plain triple weave (structure based on Fig. 5) Ground yarn Nylon 1680d / 2 97 binding yarn Nylon 1680d / 1 15 weft Nylon 840d / 1 36 pick / 3cm Tangle yarn Nylon 840d / 1 1

With the above thread specifications, the width of the needle loom is 30 mm.
It is a finish set and is a very general specification for narrow width fabrics. Since it is a triple weave, the number of two layers is 32, and the number of layers of one layer is 33 because of the connection of the selvage threads. The binding yarn is usually thinner than the ground yarn so that it cannot be seen from the surface. Woven fabrics with this woven specification can be woven without any problems. The structure of the circular weave is 1/1 plain double weave (structure based on Fig. 6) Ground yarn Nylon 1680d / 2 65 core yarn Nylon 1680d / 2 32 yarn (second layer yarn of the belt part) Core yarn Nylon 1680d / 1 15 threads (belt binding thread) Weft Nylon 840d / 1 24 picks / 3cm Entangled thread Nylon 840d / 1 1 thread

The ground yarn total denier is 218400d,
The core yarn total denier is 132720d, and the ratio is ground yarn 1
On the other hand, the core yarn is 0.61. Nylon 1680/2
The yarn diameter is 0.6460 mm, and the width is 42 in parallel with 65 ground yarns.
Calculated as mm. Therefore, in 1/1 plain double weave, even if the warp density coefficient is 1.000, the outer circumference of the circular weave is 42 mm and the outer diameter is 1
The size is 3.4 mm. Thickness of the outer peripheral circular weave is 1.2 mm
The inner diameter of the circular weave is calculated to be about 11.0 mm, since it is estimated to be about this. On the other hand, when the core yarn is calculated by the formula for calculating the yarn diameter of the present application, it is 4.
Since it is only 06 mm, there is a big difference in filling the inside of the circular weave, and the cross section is obviously not circular.

When back calculation is performed to wrap the outer circumference of the core thread in this specification with a circular weave, the diameter of the core thread is 4.1 mm and the cross-sectional diameter is 7 mm when the thickness of the outer peripheral circular weave is about 1.5 mm. The outer circumference should be 2mm and the outer diameter should be 1mm. In other words, the parallel width of the warp threads of 42 mm must be woven to 22.3 mm. When the warp density coefficient at this time is calculated, it becomes (thread diameter 0.6460 mm × 65 threads) /22.3=1.883, which is a density coefficient that cannot be established as a woven fabric according to experience and knowledge as a person skilled in the art.

[0082]

The rope-shaped belt of the present invention has a circular or nearly circular appearance with a sufficient internal cross-section that could not be realized by narrow width fabrics in the prior art. It can be used for the same purpose as braiding.
In addition, the rope-shaped belt unit has a flat belt portion at both ends together with a main body portion having a circular or almost circular appearance with a sufficient internal section which could not be realized by narrow width fabrics in the conventional art. There is an effect that it is possible to join by a simple sewing means without requiring the "satsuma processing" which has been unavoidably performed as the joining portion structure. Since such a structure has not been practically used in the past, it can be used not only as a suspender of a flexible container but also as a sling belt or other new applications as a rope substitute for a pole safety belt.

The rope-shaped belt and the rope-shaped belt unit that have been subjected to the forming heat treatment have a more stable shape and an excellent appearance, which improves the commercial value. The body of Example 1 of the present invention has a weight of 82.2 g / m.
Compared with the standard of the L2704 nylon rope, the linear density corresponds to a diameter of 11.5 mm, and a strength of 2600 Kgf or more is required, whereas the strength measured including the main body and belt is 4435 Kgf. It was

This greatly exceeds the JIS standard and is 166.7.
Equivalent to%. It has a much higher strength utilization rate than ropes and can be manufactured at a low cost with the same strength. According to the configuration of the present invention, about 60% (2
The weight of 600Kgf) will suffice and the safety level will be improved.
Even if it is 0% (3030 Kgf), the weight reduction (minus 24 g / m) desirable for work can be achieved.

When the required thickness is prioritized as in Example 2 of the present invention, it is possible to use a fiber having a low specific gravity as the core yarn through the main body portion, the connecting portion and the flat belt portion, which is also low in cost. Greatly reduces weight. The woven fabric design means based on the warp density coefficient disclosed in the present invention clarifies the theoretical basis of the design, resulting in a significant reduction in materials, time, and labor from design to product trial production and commercialization. It was

[Brief description of drawings]

FIG. 1 is a perspective view illustrating an outline of a configuration example of a rope-shaped belt unit according to the present invention.

FIG. 2 is an enlarged view showing a configuration example of a rope-shaped belt and a main body of the rope-shaped belt unit according to the present invention.

FIG. 3 is an enlarged view showing a configuration example of a flat belt portion in a rope-shaped belt unit according to the present invention.

FIG. 4 is a structure diagram illustrating an example of a woven structure of a connecting portion of a rope-shaped belt unit according to the present invention.

FIG. 5 (A) is a diagram showing a cross-sectional structure of a flat weave design portion in a conventional known example, and FIG. 5 (B) is a view showing a cross-sectional configuration of a circular weave design portion.

FIG. 6 is a side view for explaining an example of a woven structure of a triple weave in a conventional known example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Rope-shaped belt unit 2 ... Rope-shaped belt (main part of the rope-shaped belt unit) 3 ... Connection part 4 ... Flat belt part 5 ... Core yarn 6 ... Warp yarn of the hollow weave portion 7 ... Weft yarn of the hollow weave portion 10 ... Thin fabric 22 ... Woven part of rope belt (main body of rope belt unit) 61 ... Warp yarn of flat belt portion 71 ... Weft yarn of flat belt portion 51 ... Knotting yarn Each reference numeral attached to FIG. 5 and FIG. The reference numerals themselves are shown in the drawings attached to the specification of Japanese Utility Model Publication No. 62-14137 "Narrow width fabric" cited in the present specification.

Claims (3)

[Claims] 1. A narrow woven fabric composed of synthetic fiber warp yarns and weft yarns, comprising a bag-like woven structure portion forming an outer peripheral edge thereof, and core yarns arranged in the bag-like woven structure portion. And the total fineness of the core yarn is 1.5 times or more the total fineness of the warp yarns of the bag-shaped woven structure part, and the bag-shaped woven structure part is the present invention. A rope-shaped belt, characterized in that the warp density coefficient as defined in 1. is set to 0.700 or less. 2. A narrow woven fabric comprising synthetic fiber warp yarns and weft yarns, wherein the rope-like belt according to claim 1 is used as a main body portion in the longitudinal direction, and the flat belt portion and the main body portion and the flat belt portion are connected. Each of which is arranged with a predetermined length, the flat belt portion, together with the warp yarn of the bag-like woven structure portion of the main body portion, a part or all of the core yarn of the main body portion. Has a woven structure that is interlaced with wefts, and has a width of at least 2.0 times the width of the main body,
Further, the connecting portion is configured to gradually change the weaving width and change the weaving structure in a plurality of stages to transfer to the weaving structure of the main body portion or the flat belt portion. Characteristic rope-shaped belt unit. 3. The rope-shaped belt according to claim 1, wherein the rope-shaped belt or at least the main body of the rope-shaped belt unit is molded and processed by using an appropriate molding heat treatment device. The rope-shaped belt unit according to claim 2.