Hose
By using transparent warp threads and colored weft threads in the weaving of fire hose jackets, the manufacturing process for colored hoses is streamlined, reducing costs and improving efficiency compared to traditional methods.
Patent Information
- Application Number
- JP2023192147
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-11-10
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2043-11-10
AI Technical Summary
Existing methods for manufacturing colored fire hoses are costly and inefficient, requiring additional processes such as painting or replacing large numbers of warp threads, which increases production time and expense.
A hose with a jacket woven from transparent warp threads and colored weft threads, allowing for the omission of separate coloring processes and reducing the need for extensive thread replacements, thereby simplifying and cost-reducing the manufacturing process.
This approach enhances manufacturing efficiency by eliminating the need for additional coloring processes and reducing thread replacement burdens, resulting in cost savings and potentially improved durability of the hose's coloration.
Smart Images
Figure 2025080787000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a hose including a jacket woven from at least one weft yarn and a plurality of warp yarns.
Background Art
[0002] Conventionally, a hose including a jacket woven from at least one weft yarn and a plurality of warp yarns, and a lining layer covering the inner surface of the jacket is known.
[0003] As an example of such a hose, a fire hose can be mentioned. Generally, a fire hose having a jacket based on white is often used. However, due to various reasons such as identification of the deployment location and deployment year of the fire hose, a colored fire hose may be required.
[0004] A fire hose is generally woven from approximately several hundred warp yarns and several weft yarns. For the warp yarns, white-based spun yarns or multifilaments are used. Most of the weft yarns are covered by the warp yarns and cannot be visually recognized from the outside.
[0005] Currently, as methods for manufacturing a colored fire hose, there are a first method of coloring the jacket in a separate process after manufacturing a fire hose having a white jacket, and a second method of using colored warp yarns in the process of weaving the jacket.
Summary of the Invention
Problems to be Solved by the Invention
[0006] In the above first method, it is common to pass the fire hose through the paint for coloring. In this case, in addition to the normal manufacturing process of the fire hose, a process for coloring is required, and the manufacturing cost of the fire hose can be significantly increased.
[0007] In the second method described above, in order to manufacture a fire hose of the required color, it is necessary to replace a huge number of warp threads set on the loom for each hose. Since this work is time-consuming, the manufacturing cost of the fire hose also increases accordingly.
[0008] In addition to these, there are various problems in the manufacturing process of conventional fire hoses. Also, these problems can occur similarly in hoses for uses other than fire fighting. Therefore, one object of the present invention is to provide a hose that enables the efficiency of the manufacturing process. Other objects of the present invention will become apparent from the following description.
Means for Solving the Problems
[0009] A hose according to an embodiment includes a jacket including at least one weft thread and a plurality of warp threads, and a lining layer provided inside the jacket. Further, at least one of the plurality of warp threads is transparent. The transparent warp thread can be formed of, for example, a monofilament.
[0010] In one embodiment, the weft thread is non-transparent. The weft thread may be colored in a color other than white. The weft thread may be colored with a phosphorescent material or a reflective material. Also, the jacket may include a plurality of weft threads of different colors. Further, a striped pattern visible through the transparent warp thread may be formed by the weft thread.
[0011] As another example, the weft thread may be transparent. In this case, the lining layer may be visible through the transparent warp thread and the transparent weft thread.
[0012] The plurality of warp threads may include transparent warp threads and non-transparent warp threads. In this case, a straight pattern or a broken line pattern along the length direction of the hose may be formed by the non-transparent warp thread.
Effects of the Invention
[0013] For example, according to the present invention, a hose capable of improving the efficiency of the manufacturing process can be provided.
Brief Description of the Drawings
[0014]
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Embodiments for Carrying Out the Invention
[0015] Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view schematically showing a part of a hose 1 according to the present embodiment. The hose 1 is, for example, a fire hose. In this case, elements such as connectors for connecting flow paths and nozzles for discharging water are attached to both ends of the hose 1. The connector for connecting the flow path may be a fitting for connecting to a water supply source such as a fire hydrant or a fire truck, or may be a fitting for connecting to another hose. Note that the configuration of the hose 1 disclosed in the present embodiment can be applied to various hoses such as a hose connected to a drainage pump, a hose for supplying industrial water, or a hose for supplying agricultural water.
[0016] The hose 1 shown in FIG. 1 includes a jacket 2 and a lining layer 3 that covers the inner surface of the jacket 2. The jacket 2 is woven with at least one transverse yarn P and a number of longitudinal yarns Q. The transverse yarn P has a spiral shape in which loops extending in the circumferential direction θ of the hose 1 are continuous in the length direction X of the hose 1. The longitudinal yarn Q extends in the length direction X. The lining layer 3 can be formed of, for example, a synthetic resin or rubber.
[0017] The hose 1 may be flattened as shown in the drawing, for example. Further, the jacket 2 may have, for example, a straight pattern 20 or a broken line pattern 21 formed in the belly portion in a flattened state.
[0018] In the present embodiment, most of the jacket 2 has a color other than white (base color). Further, the straight pattern 20 and the broken line pattern 21 have colors different from this base color.
[0019] Examples of the weaving method of the jacket 2 include plain weave and twill weave. Hereinafter, the detailed configuration of the jacket 2 will be described by taking the case where plain weave and twill weave are each applied to the jacket 2 as an example.
[0020] FIG. 2 is a schematic plan view of the jacket 2 woven by plain weave. FIG. 3 is a schematic cross-sectional view of the hose 1 including the jacket 2 woven by plain weave.
[0021] In FIG. 2, the plurality of bands with dot patterns represent the loops L of the helical cross yarn P. These loops L may be formed by a single cross yarn P or may be formed by a plurality of cross yarns P. The plurality of bands intersecting the loops L represent the warp threads Q. In FIG. 2, for ease of understanding, a relatively large gap is provided between adjacent loops L and between adjacent warp threads Q.
[0022] In the example of FIG. 2, each loop L of the cross yarn P alternately passes above and below the warp threads Q arranged in the circumferential direction θ. Also, in the examples of FIGS. 2 and 3, each warp thread Q alternately passes above and below the loops L arranged in the length direction X.
[0023] In the present embodiment, the cross yarn P is colored with the above-described base color. Also, each warp thread Q is transparent. Here, "transparent" means that the color of the element below can be visually recognized through the warp thread Q under sunlight or lighting, and includes a so-called translucent state. That is, in the present embodiment, the color of the cross yarn P can be visually recognized through the warp thread Q.
[0024] For the cross yarn P, for example, a spun yarn, multifilament or monofilament colored with the base color can be used. On the other hand, for the warp thread Q, for example, a transparent monofilament can be used, but other types of wire materials may be used as long as transparency can be ensured. The materials of the above-mentioned spun yarn, multifilament and monofilament are not particularly limited, but for example, nylon or polyester can be used.
[0025] Note that spun yarns and multifilaments have a structure in which a large number of thin yarns are twisted together. Therefore, when not colored in a specific color, these spun yarns and multifilaments appear white due to the refraction and reflection of light occurring on the surfaces of the large number of yarns.
[0026] In the example of FIG. 3, a lining layer 3 is closely attached to the inner surface of the jacket 2. Concavities and convexities resulting from the shape of the jacket 2 are formed on the inner surface of the lining layer 3. The lining layer 3 may be adhered to the inner surface of the jacket 2 with an adhesive.
[0027] In the actual jacket 2 woven in plain weave, the upper surface of the weft yarn P is entirely covered by the warp yarn Q. That is, the weft yarn P is not exposed to the outside, and when the warp yarn Q is not transparent, the weft yarn P can hardly be visually recognized.
[0028] On the other hand, if the warp yarn Q is transparent as in this embodiment, it is possible to visually recognize the weft yarn P from the outside. As a result, the jacket 2 or the hose 1 appears to be the base color of the weft yarn P as a whole.
[0029] FIG. 4 is a schematic plan view of the jacket 2 woven in twill weave. FIG. 5 is a schematic cross-sectional view of the hose 1 provided with the jacket 2 woven in twill weave.
[0030] Similar to FIG. 2, in the example of FIG. 4, dot patterns are attached to the loops L of the spiral weft yarn P. Also, relatively large gaps are provided between adjacent loops L and between adjacent warp yarns Q for easy understanding.
[0031] In the example of FIG. 4, each loop L of the weft yarn P alternately passes under two warp yarns Q and above one warp yarn Q. Also, in the examples of FIGS. 4 and 5, each warp yarn Q alternately passes above two loops L and below one loop L. The configuration of the twill weave weft yarn P and warp yarn Q is not limited to this example. For example, the warp yarn Q may alternately pass above three or more loops L and below two or more loops L.
[0032] In each of FIGS. 3 and 5, a gap D is formed between adjacent loops L. This gap D can be made substantially zero by weaving the jacket 2 such that the warp yarn Q is crushed by the adjacent loops L. Note that "the gap D is substantially zero" means that the gap D is so small that a person observing the hose 1 without using a magnifying glass or the like cannot recognize it.
[0033] FIG. 6 is a schematic plan view of the jacket 2 in which the gap D is substantially zero. As described above, in the present embodiment, the base color of the weft yarn P is visible through the transparent warp yarn Q. Therefore, when the gap D is substantially zero, most of the jacket 2 appears to be uniformly colored in the base color of the weft yarn P.
[0034] FIG. 7 is a schematic plan view of the jacket 2 in which the gap D is not substantially zero. In this case, a striped pattern in which the gap D and the loops L are alternately arranged in the length direction X becomes visible through the transparent warp yarn Q. As an example, the gap D is smaller than the width of the weft yarn P. Note that the color of the gap D is, for example, the color of the lining layer 3 visible through the transparent warp yarn Q.
[0035] When the jacket 2 includes a plurality of weft yarns P, all of these weft yarns P may be colored in the same base color. Also, at least one of these weft yarns P may be colored in a color different from the other weft yarns P.
[0036] FIG. 8 is a schematic plan view of the jacket 2 including two weft yarns P (P1, P2) when these weft yarns P are colored in different colors. The weft yarn P1 includes a plurality of loops L1 arranged in the length direction X. The weft yarn P2 includes a plurality of loops L2 arranged in the length direction X.
[0037] In the example of FIG. 8, these loops L1, L2 are alternately arranged in the length direction X. Further, a gap D that is not substantially zero is formed between adjacent loops L1, L2.
[0038] With such a configuration, a striped pattern in which the color of the horizontal thread P1 (first color), the gap D (for example, the color of the lining layer 3), and the color of the horizontal thread P2 (second color) are repeatedly arranged can be visually recognized through the transparent vertical thread Q.
[0039] In the example of FIG. 8, the gap D may be substantially zero. In this case, a striped pattern in which the colors of the horizontal threads P1 and P2 are alternately arranged is formed. Further, when the jacket 2 includes three or more horizontal threads P, these horizontal threads P may be colored with different colors from each other.
[0040] Patterns such as the straight pattern 20 and the broken line pattern 21 shown in FIG. 1 may be formed by applying paint to the woven jacket 2. Further, these patterns can also be formed by a part of a plurality of vertical threads Q included in the jacket 2.
[0041] FIG. 9 is a schematic plan view of the jacket 2 when forming a pattern such as the straight pattern 20 or the broken line pattern 21 by the vertical thread Q. In the example of this figure, the jacket 2 includes a transparent vertical thread Q1 and an opaque vertical thread Q2.
[0042] The vertical thread Q2 has a color different from that of the horizontal thread P. The vertical thread Q2 may be, for example, a white thread composed of a spun yarn or a multifilament. Further, the vertical thread Q2 may be colored with a color different from that of the horizontal thread P.
[0043] With such a configuration, the vertical thread Q2 can form a pattern extending in the longitudinal direction X such as the straight pattern 20 or the broken line pattern 21. When the jacket 2 includes other opaque vertical threads Q of different colors in addition to the vertical thread Q2, more colorful patterns can be formed.
[0044] FIG. 10 is a schematic plan view showing still another example of the jacket 2. In the example of this figure, not only the warp threads Q but also the weft threads P are transparent. In such a case, through the warp threads Q and the weft threads P, the elements below the jacket 2, which are the lining layer 3 in this embodiment, can be visually recognized.
[0045] In addition, when the jacket 2 includes a plurality of weft threads P, all of these weft threads P may be transparent, or at least one of these weft threads P may be transparent and at least one of the others may be non-transparent. As the transparent weft thread P, for example, a monofilament can be used, but other types of wire materials may be used as long as transparency can be ensured.
[0046] The variations of the jacket 2 illustrated above can be combined as appropriate. For example, the jacket 2 may include at least one transparent weft thread P, at least one non-transparent weft thread P, at least one transparent warp thread Q, and at least one non-transparent warp thread Q.
[0047] With the configuration according to this embodiment, since the jacket 2 includes a transparent warp thread Q, a colored hose 1 that utilizes the color of the element below this warp thread Q can be obtained.
[0048] For example, in a conventional general fire hose, the jacket is woven with 1 to 3 weft threads and several hundred warp threads. Also, uncolored spun yarn or multifilament is used for most of the warp threads.
[0049] In such a conventional configuration, as methods for manufacturing a hose with a color other than white, for example, the following first method A and second method B can be mentioned. [A] After manufacturing a hose with an uncolored (white) jacket, the jacket is colored in a separate process. [B] Colored warp threads are used in the process of weaving the jacket.
[0050] In the first method A, it is common to pass a hose through the paint (color processing liquid). In this case, if a hose with an uncolored jacket is manufactured in advance, the hose can be colored in a desired color later according to an order. However, since a coloring process is required in addition to the normal manufacturing process of the hose, it leads to an increase in the manufacturing cost of the hose.
[0051] In the second method B, when trying to manufacture a jacket of another color with a loom after manufacturing a jacket of a certain color, a huge number of warp threads have to be replaced. Therefore, the work burden is large, and it also leads to an increase in the manufacturing cost of the hose.
[0052] On the other hand, the hose 1 according to the present embodiment can be manufactured by using a transparent warp thread Q and a colored weft thread P in the process of weaving the jacket 2. Therefore, it is possible to omit the coloring process as in the first method A. Further, when manufacturing jackets 2 of different colors with one loom, for example, the warp thread Q can be left as it is and the weft thread P can be replaced. Since the number of weft threads P is significantly smaller than that of warp threads Q, a large burden of thread replacement as in the second method B is less likely to occur.
[0053] Also, in the hose manufactured by the first method A, the surface of the warp thread that mainly forms the outer surface of the jacket is colored. In this case, when the surface of the jacket wears due to the use of the hose or the like, the color of the jacket may fade partially or entirely.
[0054] On the other hand, when using a transparent warp thread Q and a colored weft thread P, since the weft thread P is protected by the warp thread Q, the color of the jacket 2 is less likely to fade even if the warp thread Q wears.
[0055] Also, when the warp thread is entirely a spun yarn or a multifilament as in the conventional case, the warp thread may fluff up in the process of weaving the jacket. On the other hand, when using a monofilament as the warp thread Q as exemplified in the present embodiment, such fluffing can be suppressed.
[0056] Also, when the monofilament is used as the warp thread Q, it can also exhibit an advantageous effect on the functional surface of the hose 1, such as suppressing undesired elongation in the length direction X of the jacket 2.
[0057] As the color of the weft thread P, various colors such as red, blue, and yellow can be used. Also, the color of the weft thread P may be a fluorescent color. Furthermore, the weft thread P may be colored with a phosphorescent material or a reflective material. In this case, a hose 1 suitable for use in a dark place can be obtained.
[0058] When both the warp thread Q and the weft thread P are transparent as in the example of FIG. 10, the lining layer 3 can be visually recognized from the outside of the hose 1. Such a configuration contributes to the efficiency of the specific operation of the damaged part, which is carried out, for example, when damage to the lining layer 3 is suspected.
[0059] In addition to the above, various suitable effects can be obtained from this embodiment. Also, the configuration disclosed in this embodiment is only an example for embodying the invention related to the hose, and it can be modified into various aspects.
Explanation of Reference Numerals
[0060] 1... Hose, 2... Jacket, 3... Lining layer, 20... Straight pattern, 21... Dashed line pattern, P... Weft thread, Q... Warp thread, L... Loop of weft thread, X... Length direction, θ... Circumferential direction.
Claims
1. A jacket including at least one horizontal yarn and a plurality of vertical yarns, A lining layer provided inside the jacket, Comprising, A hose in which at least one of the plurality of vertical yarns is transparent.
2. The transparent vertical yarn is formed of a monofilament, The hose according to Claim 1.
3. The horizontal yarn is opaque, The hose according to Claim 1.
4. The horizontal yarn is colored in a color other than white, The hose according to Claim 3.
5. The horizontal yarn is colored with a phosphorescent material or a reflective material, The hose according to Claim 3.
6. The jacket includes a plurality of horizontal yarns of different colors, The hose according to Claim 3.
7. A stripe pattern visible through the transparent vertical yarn is formed by the horizontal yarn, The hose according to Claim 3.
8. The horizontal yarn is transparent, The hose according to Claim 1.
9. The lining layer is visible through the transparent vertical yarn and the transparent horizontal yarn, The hose according to Claim 8.
10. The plurality of vertical yarns include transparent vertical yarns and opaque vertical yarns, The hose according to Claim 1.
11. A straight pattern or a dashed pattern along the length direction of the hose is formed by the opaque vertical yarn, The hose according to Claim 10.
Citation Information
Patent Citations
JP1975036049A
JP1975088924U
Fire-extinguishing hose
JP2001149496A
Fire hose
JP2011161129A
Wraptable Abrasion Resistant Reflective Heat Protective Textile Sleeve and Method of Construction
JP2017520435A