JP2004019783A - Fire-fighting hose - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To promote recycling of a polyethylene terephthalate bottle so as to effectively use resources and contribute to conservation of global environment by using recycled polyester fiber having inferior performance as fiber even in a field requiring strength characteristic like a fire-fighting hose. <P>SOLUTION: In this fire-fighting hose, outer cylinders 2, 8 formed by cylindrical woven fabric are loosely fitted to the outside of a hose body 1 formed by applying lining 7 made of rubber of soft synthetic resin to the inner surface of a jacket 6 formed by cylindrically weaving a warp and a weft. A recycled polyester fiber recycled from the polyethylene terephthalate bottle is used as fibers for forming the outer cylinders 2, 8. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose used for firefighting, in which a fiber tubular jacket is provided with a rubber or soft synthetic resin lining on an inner surface thereof, and an outer cylinder made of a tubular woven fabric is loosely fitted on the outer surface thereof. The present invention relates to a fire hose for fire fighting.
[0002]
[Prior art]
Conventionally used fire hoses are generally provided with a lining on the inner surface of a tubular jacket, and the jacket is arranged in a tubular shape and extends in the longitudinal direction and intersects with the warp. A spirally woven weft with a small pitch is woven in a tubular shape.
[0003]
In such a fire hose, fittings are attached to both ends of a short fire hose, and the fittings are combined at a fire site to form a hose of a required length. The joint fitting is inserted into a connection tube at the end of the fire hose and wound around a wire from the outside of the fire hose and tightened, or fitted with a sleeve and fixed by caulking.
[0004]
However, since the above-mentioned fire hose mainly composed of fiber woven fabric is fixed by tightening a metal wire or caulking a sleeve, there is a risk that the jacket is damaged and the pressure resistance is reduced. . Therefore, usually, a tubular woven wrapping cloth is loosely fitted to the outside of the end portion of the fire hose and fixed from the outside with a wire or a sleeve to protect the jacket.
[0005]
Japanese Utility Model Publication No. 2-548 discloses a double jacket hose in which an outer cylinder jacket similar to the jacket is loosely fitted to the outside of a hose having a lining formed on the inner surface of the jacket to improve the trauma resistance. Have been.
[0006]
[Problems to be solved by the invention]
On the other hand, in recent years, environmental problems have been increasing abundantly, and recycling of waste products has been proposed. In particular, PET bottles are drawing attention as a material to be recycled.
[0007]
PET bottles are made of polyethylene terephthalate (PET) resin, and it has been proposed to recycle used ones as fibers and use them as raw materials for clothing, etc., but the recycling rate is not necessarily high. The fact is that I can't tell.
[0008]
As an industrial material, it is conceivable to use a fiber regenerated from a PET bottle. However, the reusable fiber is inferior in strength, so that its usable applications are limited. In particular, it was not considered in a field requiring high strength performance such as a fire hose jacket.
[0009]
The present invention has been made in view of the above circumstances, and has as its object to use polyester fibers regenerated from PET bottles in the field of fire hoses to promote the use of recycled fibers.
[0010]
[Means for Solving the Problems]
Thus, according to the present invention, an outer cylinder made of a tubular woven fabric is loosely fitted to an outer surface of a hose formed by lining rubber or soft synthetic resin on an inner surface of a jacket in which a warp and a weft are woven in a tubular shape. In the fire-fighting hose according to the present invention, recycled polyester fiber recycled from a PET bottle is used as a fiber constituting the outer cylinder.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows an embodiment of a fire hose of the present invention. In FIG. 1, reference numeral 1 denotes a hose body having a rubber or soft synthetic resin lining formed on the inner surface of a jacket formed by weaving a warp and a weft in a tubular shape.
[0012]
A tubular roll cloth 2 is loosely fitted to the outside of the terminal portion of the hose body 1. A connection tube of the joint fitting 3 is inserted from the end of the hose body 1, and the wire 4 is wound and tightened from the outside of the sponge cloth 2 to attach the joint fitting 3 to the hose body 1.
[0013]
The wrapping cloth 2 is a tubular woven cloth formed by weaving a warp and a weft in a tubular shape or by rolling a sheet-shaped woven fabric into a tubular shape, and is loosely fitted to the outside of the hose body 1. Have been. The roll cloth 2 may be entirely or partially bonded to the hose body 1. In the present invention, recycled polyester fiber recycled from a PET bottle is used as a fiber constituting the rolled cloth 2.
[0014]
The wrap cloth 2 is intended to prevent the jacket of the hose body 1 from being damaged by the wire 4 when the fitting 3 is attached, and to protect the jacket from external force. Even if a regenerated polyester fiber having inferior strength is used, its function is not impaired at all.
[0015]
The recycled polyester fiber is preferably used for all of the fibers constituting the rolled cloth 2, but is not necessarily limited to this, and may be used for only a part thereof. From the viewpoint of promoting the use of recycled fibers, it is preferable that at least half of the fibers constituting the rolled cloth 2 are recycled polyester fibers.
[0016]
The wound fabric 2 may use either a filament yarn or a spun yarn of recycled polyester fiber, but it is preferable to use a spun yarn for the purpose of protecting the jacket of the hose body 1.
[0017]
Next, FIG. 2 shows another embodiment of the present invention, in which a double jacket hose 5 is provided. That is, the hose body 1 has a lining 7 provided on the inner surface of a jacket 6 similarly to FIG. 1, and an outer cylinder jacket 8 which is a tubular woven fabric is loosely fitted to the outside of the hose body 1.
[0018]
The outer tube jacket 8 is formed by weaving a warp and a weft in the same manner as the jacket 6, and its inner diameter is preferably equal to or slightly larger than the outer diameter of the jacket 6. In the present invention, recycled polyester fibers recycled from PET bottles are used as the fibers constituting the outer jacket 8.
[0019]
Also in this example, it is preferable to use the recycled polyester fiber for all of the fibers constituting the outer jacket 8, but it is not necessarily limited to this, and it is also possible to use only a part thereof. From the viewpoint of promoting the use of recycled fibers, it is preferable that at least half of the fibers constituting the outer jacket 8 be recycled polyester fibers.
[0020]
Either a filament yarn or a spun yarn of recycled polyester fiber can be used for the outer jacket 8, but for the purpose of protecting the jacket of the hose body 1, at least the warp of the outer jacket 8 is used. It is preferred to use spun yarn.
[0021]
In the present invention, as described in Japanese Utility Model Publication No. 2-548, the inner diameter of the outer jacket 8 is substantially equal to the outer diameter when the hose body 1 is pressurized to the design working pressure, or It is preferable that the weft is slightly larger than that, and that the weft of the outer cylinder jacket 8 is not strained when the working pressure is applied.
[0022]
However, the present invention is not limited to this, and the inner diameter of the outer jacket 8 may be substantially equal to the outer diameter of the hose body 1 in a state where no pressure is applied. By using the regenerated polyester fiber as the weft of the outer jacket 8, the regenerated polyester fiber has a larger elongation at break than the normal polyester fiber. There is no excessive tension, and the protection function for the hose body 1 is not impaired.
[0023]
【The invention's effect】
Therefore, according to the present invention, by using a recycled polyester fiber recycled from a PET bottle as a fiber constituting an outer cylinder such as the roll cloth 2 or the outer cylinder jacket 8 loosely fitted to the outside of the hose body 1. In areas where strength properties are required, such as fire hoses, recycled polyester fibers with inferior performance as fibers can be used, promoting the recycling of PET bottles, and making effective use of resources. It can contribute to the preservation of the global environment.
[Brief description of the drawings]
FIG. 1 is a partial plan view showing one embodiment of a fire hose of the present invention. FIG. 2 is a partially exploded plan view showing another embodiment of a fire hose of the present invention.
1 Hose body 2 Outer cylinder (clothed cloth)
6 Jacket 7 Lining 8 Outer cylinder (outer cylinder jacket)

Claims (1)

An outer cylinder made of a tubular woven fabric is provided on the outside of a hose body (1) obtained by applying a rubber or soft synthetic resin lining (7) to the inner surface of a jacket (6) in which a warp and a weft are woven in a tubular shape. A fire hose obtained by loosely fitting 2, 8), wherein a recycled polyester fiber recycled from a PET bottle is used as a fiber constituting the outer cylinder (2, 8).

Images