Fire hose

Abstract

To clearly indicate V-shaped patterns showing an evacuation direction by knitting.SOLUTION: On cylindrical woven fabric 2, a body part 21 and a direction display part 22 where V-shape patterns continuously appear in a longitudinal direction are arranged in a circumferential direction. In a slant pattern part 221 composing one side slants of V-shape patterns, first threads 31 which have a weave texture of extending twill composed by deleting one warp or more from the weave texture of twill weave and differ from the body part 21 in a hue and second threads 32 different from the first thread 31 in a hue are used as warp and, with one first thread 31 and a plurality of second threads 32 combined as one set arranging in the circumferential direction, the respective sets are arranged in the circumferential direction, and the weave texture of the extending twill is formed between the first thread 31 and the second threads 32 of each set or between the second threads 32, 32. In a reverse slant pattern part 222 composing the other side slant of the V-shaped patterns, at least threads having a different hue different from that of the body part 21 are used.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a fire hose in which at least the inner surface of a tubular woven fabric made of warp and weft threads is lined with rubber or synthetic resin. [Background technology]

[0002] Fire hoses are used in firefighting activities. When a fire is in a building on the ground, if evacuation is necessary, firefighters can simply evacuate away from the fire, but when fighting a fire inside a building, firefighters often become engulfed in smoke and lose their direction.

[0003] For this reason, the deployed fire hose is used as a guide to return to the outside of the fire, and it has been proposed that the fire hose extending in the direction of the retreat route should be marked with a sign indicating the direction in which firefighters should evacuate.

[0004] In relation to this proposal, for example, Japanese Patent Laid-Open Publication No. 2004-132443 (Patent Document 1) and Utility Model Registration No. 3091291 (Patent Document 2) have proposed providing an arrow indicator on a fire hose. However, this arrow indicator is displayed using a coating material such as a reflective material or luminous paint, and there is a possibility that it will disappear when the hose becomes worn, etc.

[0005] Also, in Japanese Patent No. 6093893 (Patent Document 3) and Japanese Patent No. 6116732 (Patent Document 4), it has been proposed to express the arrow indicator by weaving a tubular woven fabric. In this case, the arrow indicator will not wear away, but in these designs the arrow indicator is unclear and it is difficult to tell at a glance which direction to retreat. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2004-132443 A [Patent Document 2] Utility Model Registration No. 3091291 [Patent Document 3] Patent No. 6093893 [Patent Document 4] Patent No. 6116732 Summary of the Invention [Problem to be solved by the invention]

[0007] Therefore, an object of the present invention is to form a V-shaped pattern indicating the evacuation direction on a part of a fire hose by weaving a tubular woven fabric, and to clearly show the V-shaped pattern. [Means for solving the problem]

[0008] The present invention relates to a fire hose in which at least the inner surface of a tubular woven fabric made of warp threads and weft threads is lined with rubber or synthetic resin, the tubular woven fabric has a twill weave formed by the warp threads and the weft threads, the tubular woven fabric has a main body portion and a direction indicating portion aligned in the circumferential direction, a V-shaped pattern appears continuously in the longitudinal direction of the tubular woven fabric, the direction indicating portion comprises a forward diagonal pattern portion constituting one side of the V-shaped pattern and a reverse diagonal pattern portion constituting the other side of the V-shaped pattern, and the forward diagonal pattern portion has a weave pattern of the twill weave. This fire hose has a stretched twill weave structure formed by removing one or more warp threads from the weave, and the warp threads are made of a first thread of a different color from the main body and a second thread of a different color from the first thread, and each set is made of one first thread and multiple second threads lined up in the circumferential direction, and each set is arranged in parallel in the circumferential direction, and the stretched twill weave structure is formed between the first thread and the second thread of each set or between the second threads, and in the reverse diagonal line pattern portion, the warp threads are made of threads of at least a different color from the main body.

[0009] According to this configuration, a V-shaped pattern can be formed with a simple twill weave by arranging the warp threads in the forward diagonal line pattern portion and the reverse diagonal line pattern portion.

[0010] In addition, in the inverted diagonal pattern portion, the first yarn and the second yarn are used as the warp yarns, and each set of one first yarn and multiple second yarns aligned in the circumferential direction is arranged parallel to the circumferential direction.

[0011] With this configuration, by adjusting the number of second yarns in the reverse diagonal pattern section that appear on the front side of the tubular woven fabric in the twill weave, it is possible to make the second yarns appear nearly symmetrical in the circumferential direction in the normal diagonal pattern section and the reverse diagonal pattern section.

[0012] In addition, in the reverse diagonal pattern portion, each set may be made up of one first thread aligned in the circumferential direction and a plurality of second threads excluding the number of threads that meets condition 1 or condition 2 below, and each set may be arranged parallel to the circumferential direction. Condition 1: If the weave is 2 / 1 twill, then 3n+2 (n is an integer equal to or greater than 0) Condition 2: If the weave is 3 / 1 twill or 2 / 2 twill, the number is 4n+3 (n is an integer equal to or greater than 0).

[0013] According to this configuration, by using a plurality of second yarns excluding the number of yarns that meets condition 1 or condition 2, the V-shaped pattern can be reliably formed.

[0014] In addition, in the positive diagonal line pattern portion and the reverse diagonal line pattern portion, the second threads may be thinner than the first threads.

[0015] With this configuration, the second thread appearing on the front side of the tubular woven fabric in the twill weave is thinner than the first thread, and by adjusting the circumferential dimension of the second thread, the forward diagonal pattern portion and the reverse diagonal pattern portion can be made to appear nearly symmetrical in the circumferential direction.

[0016] The positive diagonal pattern portion and the negative diagonal pattern portion in the circumferential direction may be symmetrical.

[0017] With this configuration, the second yarns that appear on the front side of the tubular woven fabric in the twill weave are thinner than the first yarns, and by finely adjusting the circumferential dimension of the second yarns, the forward and reverse diagonal pattern parts can be made to appear symmetrical in the circumferential direction, allowing the V-shaped pattern to be formed in a regular shape.

[0018] In addition, the reverse diagonal pattern portion is a reverse diagonal weave structure in which the diagonal lines are in the opposite direction to the diagonal weave structure of the normal diagonal pattern portion, and one of the first yarns and one of the second yarns are used as the warp threads, and are arranged alternately in parallel in the circumferential direction.

[0019] According to this configuration, the reverse diagonal line pattern portion can be made symmetrical with respect to the forward diagonal line pattern portion in the weave structure itself, so that a symmetrical V-shaped pattern can be easily formed.

[0020] In addition, in the inverted diagonal pattern portion, a third yarn having a different color from the main body portion and the first yarn, and a fourth yarn having a different color from the third yarn can be used as substitute yarns for the first yarn and the second yarn in the warp thread.

[0021] With this configuration, by arranging the first and second threads in the forward diagonal pattern portion and the third and fourth threads in the reverse diagonal pattern portion, it is possible to form V-patterns of various colors with a simple twill weave.

[0022] The twill weave may also be a 2 / 1 twill weave.

[0023] According to this configuration, a regular V-shaped pattern can be formed using a typical weave. Effect of the Invention

[0024] The present invention can form a V-pattern with a simple twill weave by arranging the warp threads of the forward diagonal line pattern part and the reverse diagonal line pattern part. Therefore, the V-pattern indicating the evacuation direction on a part of the fire hose is expressed by weaving the tubular woven fabric, and the V-pattern can be clearly expressed. [Brief description of the drawings]

[0025] [Figure 1] FIG. 1 is a perspective view showing a fire hose according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a structure diagram of the tubular woven fabric of the fire hose. [Diagram 3] 3 is a diagram showing a schematic view of a yarn arrangement in a horizontal cross section of part A in FIG. 2. FIG. [Figure 4] 1 is a photograph of an actual example of the fire hose, which has been flattened, showing a part of the main body and a direction indicator. [Diagram 5] FIG. 5 is a structure diagram of a tubular woven fabric for a fire hose according to a second embodiment of the present invention. [Figure 6] FIG. 5 is a structure diagram of a tubular woven fabric for a fire hose according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Next, the present invention will be described with reference to an embodiment.

[0027] FIG. 1 shows a fire hose 1 of the first embodiment. The fire hose 1 includes a tubular woven fabric 2. The tubular woven fabric 2 is made of warp threads 3 and weft threads 4. The tubular woven fabric 2 has a twill weave formed by the warp threads 3 and the weft threads 4. In this embodiment, the warp threads 3 pass over the front side of two weft threads 4, and then pass over the back side of one weft thread 4, which is a 2 / 1 twill weave. In FIG. 2, the area shown in dots (first thread 31) and the area shown in black (second thread 32) correspond to the portion that appears on the surface of the tubular woven fabric 2 in the 2 / 1 twill weave. In FIG. 2, the area shown in white corresponds to the portion through which the weft thread 4 passes. In FIG. 3, the positional relationship between the front and back of the warp threads 3 based on the weft thread 4 in part A of FIG. 2 is shown in schematic form (the thickness ratio of each thread shown is not accurate). The inner surface of the tubular woven fabric 2 is lined with a lining 5 made of soft rubber or synthetic resin.

[0028] A plurality of V-shaped patterns 6 indicating the retreat direction (to the right in FIG. 1) are displayed on the surface of the tubular woven fabric 2 by the weave structure of the tubular woven fabric 2. In the tubular woven fabric 2, a main body 21 of the tubular woven fabric 2 and a direction display section 22 where the plurality of V-shaped patterns 6 appear consecutively in the longitudinal direction are aligned in the circumferential direction.

[0029] In the main body 21, in this embodiment, an uncolored (white) yarn 30 is used as the warp yarn 3. In this embodiment, a 20 / 6 (6-ply 20-count yarn) spun ester yarn with two strands is used as the warp yarn 3 of the main body 21. In FIG. 2, black areas are provided for the purpose of explaining the weave structure, but in reality, as shown in FIG. 4, the area is uncolored (white). In this embodiment, an uncolored (white) yarn is used as the weft yarn 4. As the weft yarn 4 (both in the main body 21 and the direction display section 22), a yarn in which 5 strands of 1100 dtex polyester filament are twisted is used. In FIG. 2, the weft yarn 4 is shown to be visible because the vertical and horizontal directions are drawn evenly in the diagram, but in an actual weave structure, the warp yarn 3 is packed in the circumferential direction, so it does not appear on the surface of the tubular woven fabric 2, or appears only slightly.

[0030] The direction display unit 22 includes a positive diagonal pattern portion 221 which constitutes the diagonal lines on one side of the V-pattern 6 (the diagonal lines shown on the upper side in FIG. 1 and the diagonal lines shown on the left side in FIG. 4), and a reverse diagonal pattern portion 222 which constitutes the diagonal lines on the other side of the V-pattern 6 (the diagonal lines shown on the lower side in FIG. 1 and the diagonal lines shown on the right side in FIG. 4).

[0031] The positive diagonal line pattern portion 221 uses a first yarn 31 having a different color from that of the main body portion 21 and a second yarn 32 having a different color from that of the first yarn 31 as the warp threads 3, and each set of one first yarn 31 and three second yarns 32 is arranged alternately in parallel in the circumferential direction (horizontal direction in FIG. 2) of the tubular woven fabric 2. The positive diagonal line pattern portion 221 has a stretched twill weave structure formed by deleting one or more warp threads from the twill weave structure. The stretched twill is a weave structure formed by deleting several warp threads or weft threads of a twill weave, as described on pages 141-142 of a book titled "Textiles and Textile Products - Japan Textile Industry Education Research Association" (published by Jikkyo Publishing Co., Ltd., author (representative): Tatsuo Adachi), which is a high school textbook, and here the stretched twill is formed by deleting the warp threads. In this embodiment, a stretched twill weave is formed between the first yarn 31 and the second yarn 32 of each set by removing one warp yarn. In this way, the positive diagonal line pattern portion 221 has a portion where the weave is interrupted in the circumferential direction, as shown in FIG. 2. In addition to this embodiment, a stretched twill weave may be formed between the second yarns 32, 32 of each set (not between the first yarn 31 and the second yarn 32). The color of the first yarn 31 can be selected from various colors as long as it is clearly different from the color of the main body portion 21 (white in this embodiment). In addition, the color of the second yarn 32 can be selected from various colors as long as it is clearly different from the color of the first yarn 31. Therefore, the color of the second yarn 32 may be the same color as the yarn 30 of the main body portion, or may be a different color (white in this embodiment).

[0032] In the reverse diagonal line pattern portion 222, at least threads different in color from that of the main body portion 21 are used as the warp threads 3. Specifically, as in the normal diagonal line pattern portion 221, a first thread 31 and a second thread 32 are used as the warp threads 3. A first thread 31 and a plurality of (three in this embodiment) second threads 32 arranged in the circumferential direction are regarded as one set, and each set is arranged in parallel in the circumferential direction. The number of second threads 32 is not particularly limited. However, if the number of threads meets the following condition 1 or condition 2, no diagonal lines are formed in the reverse diagonal line pattern portion 222, so it is sufficient that the number of second threads 32 is a plurality of threads other than the number of threads. The 2 / 1 twill weave, 3 / 1 twill weave, and 2 / 2 twill weave in each condition are illustrative examples of weave structures often used in fire hoses. Condition 1: If the weave is 2 / 1 twill, then 3n+2 (n is an integer equal to or greater than 0) Condition 2: If the weave is 3 / 1 twill or 2 / 2 twill, the number is 4n+3 (n is an integer equal to or greater than 0). The number of second yarns 32 can be appropriately set according to the thicknesses of the first yarns 31 and the second yarns 32. In this embodiment, since the weave is a 2 / 1 twill weave, the number of second yarns is three.

[0033] In this embodiment, the first yarn 31 is a 20 / 8 spun polyester yarn (8 twisted yarns of 20 count in the example of FIG. 4). The second yarn 32 is a single 20 / 4 spun polyester yarn (4 twisted yarns of 20 count in the example of FIG. 4). Thus, the second yarn 32 is thinner (i.e., has a smaller circumferential dimension) than the first yarn 31. In terms of the dimensions calculated from the yarn count (calculated dimensions, not actual dimensions), the circumferential dimension of the tubular woven fabric 2 is 1.27 mm for the 20 / 8 two-ply yarn. The circumferential dimension of the tubular woven fabric 2 is 0.45 mm for one 20 / 4 yarn. The weft yarn 4 is a yarn made of 5 twisted 1100 dtex polyester filaments, as mentioned for the main body 21.

[0034] In the positive diagonal pattern portion 221, the section where the warp threads 3 appear on the front side of the tubular woven fabric 2 in a 2 / 1 twill weave (the section shown in black or with a dotted pattern in Figure 2) is arranged so that it approaches upward as it moves to the right in Figure 2 (towards the center of symmetry of the direction display portion 22), as shown by the inclined line L221 shown by a dotted line.

[0035] On the other hand, in the inverse diagonal pattern portion 222, one first thread 31 and three second threads 32 are grouped together, and each group is arranged in parallel in the circumferential direction. In other words, three second threads 32 are positioned consecutively next to one first thread 31 in the circumferential direction.

[0036] In a 2 / 1 twill weave, the section in which warp threads 3 appear on the front side of the tubular woven fabric 2 is arranged so that it moves upward as it moves to the left in Figure 2 (towards the center of symmetry of the direction indicating portion 22), as shown by the inclined line L222 indicated by a dotted line.

[0037] In this way, by arranging the first thread 31 and the second thread 32 of the forward diagonal pattern portion 221 and the reverse diagonal pattern portion 222, a V-shaped pattern 6 indicating the evacuation direction can be expressed in a part of the fire hose 1 with a simple twill weave by the weave structure of the tubular woven fabric 2.

[0038] 2, with respect to the right end of the forward diagonal pattern portion 221 in Fig. 2 as a reference, the exposed position on the front side of the tubular woven fabric 2 of the first thread 31 on the left side of the forward diagonal pattern portion 221 in Fig. 2 and the exposed position on the front side of the tubular woven fabric 2 of the first first thread 31 on the right side of the reverse diagonal pattern portion 222 are substantially aligned in the longitudinal direction of the tubular woven fabric 2. The relationship of the second and subsequent first threads 31 on the left and right sides is similar.

[0039] Since the second yarns 32 are thinner than the first yarns 31 in the direction indication section 22, the number of second yarns 32 appearing on the front side of the tubular woven fabric 2 in twill weaving and the circumferential dimension corresponding to the thickness of each yarn can be adjusted so that the second yarns 32 appear symmetrically in the circumferential direction of the tubular woven fabric 2 in the forward diagonal line pattern section 221 and the reverse diagonal line pattern section 222. This allows each V-shaped pattern 6 constituting the direction indication section 22 to be formed in a regular shape. Thus, the V-shaped pattern 6 indicating the evacuation direction is represented on a part of the fire hose 1 by the weave structure of the tubular woven fabric 2, and the V-shaped pattern 6 can be clearly represented without being visually unnatural, as shown in FIG. 4.

[0040] In addition, in the forward diagonal pattern portion 221 and the reverse diagonal pattern portion 222, the second thread 32T may be made the same thickness as the first thread 31. In this case (referred to as the second embodiment), the weave structure diagram of the tubular woven fabric 2 in the fire hose 1 of this embodiment will be as shown in Figure 5.

[0041] In the reverse diagonal pattern portion 222, a third thread (a substitute thread for the first thread 31, not shown) having a different color from that of the main body portion 21 and the first thread 31, and a fourth thread (a substitute thread for the second thread 32, not shown) having a different color from that of the third thread may be used as the warp threads 3, and one third thread and multiple (three in this embodiment) fourth threads arranged in the circumferential direction may be made into one set, with each set being arranged in parallel in the circumferential direction. In this case, a V-shaped pattern having different colors is formed in the normal diagonal pattern portion 221 and the reverse diagonal pattern portion 222.

[0042] Furthermore, by adjusting the number of threads and the thickness of each thread in the reverse diagonal line pattern portion 222 for the fourth yarn, a V-shaped pattern having different colors in the normal diagonal line pattern portion 221 and the reverse diagonal line pattern portion 222 can be made to appear symmetrically in the circumferential direction of the tubular woven fabric 2 in the normal diagonal line pattern portion 221 and the reverse diagonal line pattern portion 222.

[0043] 6, the reverse diagonal pattern portion 222 may have a reverse diagonal weave structure in which the diagonal direction is opposite to that of the twill weave structure of the main body portion 21, and may be formed by using one first thread 31 and one second thread 32T (having the same thickness as the first thread 31) as warp threads, which are alternately arranged in parallel in the circumferential direction (third embodiment). By configuring in this manner, the reverse diagonal pattern portion 222 can be made symmetrical to the normal diagonal pattern portion 221 in terms of the weave structure. This makes it possible to easily form a symmetrical V-shaped pattern.

[0044] Although an embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

[0045] For example, in the first embodiment, one first thread 31 and three second threads 32 are arranged in one set in the inverse diagonal pattern portion 222. However, the number of second threads 32 may be any number other than the number that meets the above-mentioned condition 1 or condition 2, and may be appropriately set according to the thickness of the first thread 31 and the second thread 32. In order to avoid unnatural appearance of the V-shaped pattern, it is preferable to set the number of second threads 32 to 3n (n=1, 2, 3...) in the case of 2 / 1 twill weave, 4n or 4n+1 (n=1, 2, 3...) in the case of 3 / 1 twill weave, and 4n (n=1, 2, 3...) in the case of 2 / 2 twill weave. Furthermore, in consideration of the weaving workability of the tubular woven fabric 2, it is appropriate to limit the number of second threads 32 in each set to a maximum of 13.

[0046] In the first embodiment, in the forward diagonal line pattern portion 221 and the reverse diagonal line pattern portion 222, the thicker the first thread 31 is compared to the second thread 32, or the thinner the second thread 32 is compared to the first thread 31, the narrower the gap between the first threads 31, 31 in the circumferential direction of the tubular woven fabric 2, and the more the color of the first thread 31 appears continuous, making the V-shaped pattern clearer. However, since the first thread 31 also appears continuous in the longitudinal direction of the tubular woven fabric 2, it is not preferable if the second thread 32 is too thin. For example, when spun ester is used and the number of second threads 32 constituting one set is three as in the first embodiment, the following can be exemplified as suitable threads (however, they are not limited to these). The first yarn 31 is one 20 / 6, two 20 / 6, two 20 / 8, and two 20 / 10. The range of dimensions calculated from the yarn count (not the actual dimensions but the calculated dimensions) is 0.55 mm to 1.42 mm. The second yarn 32 is one 20 / 3, one 20 / 4, one 20 / 6, two 20 / 3 strands, and two 20 / 6 strands. The range of dimensions calculated from the yarn count is 0.39 mm to 1.10 mm.

[0047] Moreover, as the first yarn 31 and the second yarn 32 constituting one set, the combinations shown in Table 1 can be exemplified (however, the combinations are not limited to these). [Table 1] [Explanation of symbols]

[0048] 1. Fire hose 2. Tubular woven fabric 21 Main body 22 Direction display 221 Positive diagonal line pattern 222 Reverse diagonal line pattern 3. Warp 30 Warp threads (uncolored) 31 Thread of a different color from the main body, No. 1 thread 32 Second Thread 32T 2nd thread (same thickness as 1st thread) 4 Weft 5 Lining 6 V-shaped pattern

Claims

1. A fire hose in which at least the inner surface of a tubular woven fabric made of warp and weft yarns is lined with rubber or synthetic resin, The weaving structure of the tubular woven fabric is a twill weave woven by the warp yarns and the weft yarns, The tubular woven fabric has a main body and a direction indicating portion aligned in a circumferential direction, In the direction indicating portion, a V-shaped pattern appears continuously in the longitudinal direction of the tubular woven fabric, the direction indication portion includes a positive diagonal line pattern portion constituting a diagonal line on one side of the V-pattern, and a reverse diagonal line pattern portion constituting a diagonal line on the other side of the V-pattern, The positive diagonal pattern portion has an elongated twill weave structure formed by removing one or more warp threads from the twill weave structure, and a first thread having a different color from that of the main body portion and a second thread having a different color from that of the first thread are used as the warp threads, and one first thread and a plurality of second threads arranged in the circumferential direction are regarded as one set, and each set is arranged in parallel in the circumferential direction, and the elongated twill weave structure is formed between the first thread and the second thread of each set or between the second threads of each set. In the inverted diagonal pattern portion, a yarn having a color different from that of at least the main body portion is used as the warp yarn, In the inverse diagonal line pattern portion, the first yarn and the second yarn are used as the warp yarns, and each set of one first yarn and a plurality of second yarns arranged in the circumferential direction is arranged in parallel in the circumferential direction, a first thread arranged in the circumferential direction and a plurality of the second threads excluding the number of the second threads that meets the following condition 1 or condition 2 are grouped into one set, and each set is arranged in parallel in the circumferential direction. Condition 1: If the weave is a 2 / 1 twill weave, 3n+2 (n is an integer equal to or greater than 0) Condition 2: If the weave is 3 / 1 twill or 2 / 2 twill, 4n+3 (n is an integer of 0 or more)

2. 2. The fire hose according to claim 1, wherein the second threads are thinner than the first threads in the positive diagonal line pattern portion and the negative diagonal line pattern portion.

3. 3. The fire hose according to claim 2, wherein the positive diagonal pattern portion and the negative diagonal pattern portion are symmetrical in the circumferential direction.

4. A fire hose in which at least the inner surface of a tubular woven fabric made of warp and weft yarns is lined with rubber or synthetic resin, The weaving structure of the tubular woven fabric is a twill weave woven by the warp yarns and the weft yarns, The tubular woven fabric has a main body and a direction indicating portion aligned in a circumferential direction, In the direction indicating portion, a V-shaped pattern appears continuously in the longitudinal direction of the tubular woven fabric, the direction indication portion includes a positive diagonal line pattern portion constituting a diagonal line on one side of the V-pattern, and a reverse diagonal line pattern portion constituting a diagonal line on the other side of the V-pattern, The positive diagonal pattern portion has an elongated twill weave structure formed by removing one or more warp threads from the twill weave structure, and a first thread having a different color from that of the main body portion and a second thread having a different color from that of the first thread are used as the warp threads, and one first thread and a plurality of second threads arranged in the circumferential direction are regarded as one set, and each set is arranged in parallel in the circumferential direction, and the elongated twill weave structure is formed between the first thread and the second thread of each set or between the second threads of each set. In the inverted diagonal pattern portion, a yarn having a color different from that of at least the main body portion is used as the warp yarn, a first thread and a second thread are used as the warp threads, and the first thread and the ...

5. 5. The fire hose according to claim 1, wherein in the inverted diagonal pattern portion, a third yarn having a different color from the main body and the first yarn, and a fourth yarn having a different color from the third yarn are used as substitute yarns for the first yarn and the second yarn in the warp.

6. 6. A fire hose as claimed in claim 1, wherein the twill weave is a 2 / 1 twill weave.

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