JP2014059024A - Fire hose - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire hose which can reliably show a return passage with proper visibility over a long period of time and which is excellent in the guide function of bringing about safe and rapid return of a fireman getting deeply into the back of a building and the like being a fire site.SOLUTION: In a fire hose having a longitudinal color line on a surface of a jacket of the hose, the longitudinal color line is drawn as a dashed line, and the line is drawn in such a manner that the length of each partial line constituting the intermittent vertical color line is changed in a hose length direction with predetermined regularity.

Description

  The present invention relates to a fire hose.

  More specifically, when a firefighter returns from a fire place such as a dark place, relying on the fire hose deployed, the return path can be shown with good visibility over a long period of time. It is related with the fire hose excellent in the induction | guidance | derivation function to return the fire brigade member who entered deep inside the building etc. safely and quickly.

  In fire extinguishing activities such as building fires, firefighters hold a water discharge nozzle and infiltrate the fire site deep inside the building while dragging and extending a fire hose connected to the water discharge nozzle to extinguish the fire. And when it is determined that the fire should be evacuated, or even before the fire is extinguished, depending on the situation of the site, or when the water is used up, the fire hose and lights that have been extended up to that point should be Follow the directions and escape outside a fire building such as a building.

  In such a case, since the building that caused the fire is generally in a power outage state, the firefighters are not able to see the expanded fire hose in the building with a complicated structure with poor visibility in dark darkness and smoke. Often you have to go back with the only line.

  Therefore, it is desirable to realize a fire hose that can instantly and surely recognize the presence of a fire hose that should go ahead as a retreat even under such circumstances, and various proposals have been made to deal with it. Yes.

  For example, a reflection material or a light emitting layer using a fluorescent substance as a pigment is provided along the longitudinal direction of the hose in which a reflection material is applied to the entire hose for the purpose of preventing the vehicle from climbing (Patent Document 1). A thing (patent document 2) etc. is proposed.

  In addition, a light-emitting paint such as a phosphorescent paint or a fluorescent paint is continuously or intermittently attached to at least one of both side edges of the hose body flattened over the entire length of the hose body (Patent Document 3), or the hose longitudinal direction A fire hose (Patent Document 4) or the like in which marks made of luminous paint such as phosphorescent paint or fluorescent paint having a shape pointing to the female metal fitting side are attached in a row is proposed. It has been proposed to add a reflective material made of glass balls or the like (paragraph 0021 of Patent Document 3 and paragraph 0016 of Patent Document 4).

  However, these proposals still have room for improvement in terms of light emission visibility and direction indication under severe conditions such as darkness, poor light, and full of smoke.

Japanese Patent Laid-Open No. 10-2464 JP 2001-193874 A JP 2000-140146 A JP 2004-132443 A

  In view of the above-described points, the object of the present invention is to show a return path reliably for a long time with good visibility, and to safely and safely prevent firefighters who have entered deeply into a building or the like that is a fire site. The object is to provide a fire hose with an excellent induction function to return quickly.

The fire hose of the present invention that achieves the above-described object has the following configuration (1).
(1) In a fire hose having a vertical color line on the surface of the hose jacket, the vertical color line is drawn as an intermittent line, and the length of each part line constituting the intermittent vertical color line is: A fire hose having a predetermined regularity and drawn in the length direction of the hose.

Moreover, in the fire hose according to (1) of the present invention, more preferably, the fire hose has any one of the following configurations (2) to (7).
(2) The fire hose according to (1), wherein the vertical color line is made of a resin layer containing a phosphorescent material and imparted with a phosphorescent property.
(3) From the resin layer in which the vertical color line contains a large number of glass beads having a refractive index of 1.5 to 2.2 and a particle size of 10 to 250 μm, reflector particles and a phosphorescent material and having a retroreflective property and a phosphorescent property. And the glass beads are unevenly distributed closer to the surface layer, and the phosphorescent material is unevenly distributed closer to the inner layer to form the resin layer. For hose.
(4) The fire hose according to (2) or (3), wherein the resin layer contains a pigment.
(5) When the resin layer forming the vertical color line emits phosphorescent light and / or reflected light, each part line forming the vertical color line emits light in the hose length direction, and the difference in brightness or shade of the emitted light The fire hose according to the above (4), wherein the fire hose is formed so as to exhibit.
(6) The average particle diameter of the glass beads is larger than the average particle diameter of the phosphorescent material, and the average particle diameter of the phosphorescent material is larger than the average particle diameter of the reflector particles. 3) Fire hose as described.
(7) The average particle diameter of the glass beads is 2 to 5 times the average particle diameter of the phosphorescent material, and the average particle diameter of the phosphorescent material is 2 to 5 times the average particle diameter of the reflector. The fire hose described in (6) above, which is characterized.

  According to the first aspect of the present invention, when a fire brigade returns in the dark darkness and smoke, relying only on the line of the fire hose extended from the building having a complicated structure, Provided is a fire hose that is excellent in visibility and inductivity of a return path, in which the return line indicated by the hose line can be determined instantaneously and clearly together with the direction of the return path.

  ADVANTAGE OF THE INVENTION According to this invention, the fire hose which can demonstrate over the long time the function which guides more instantly and correctly with respect to the fire brigade member who relies relying on the line of the fire hose is provided, and helps a safe return. Is.

  In addition, a fire hose that is easy to confirm that it is not twisted is provided when the fire hose is extended or rolled and stored without being twisted in the dark.

  According to this invention concerning any one of Claims 2-7, the fire hose which exhibits more reliably and greatly the effect which the fire hose of this invention of Claim 1 mentioned above has is provided. is there.

It is the external view which showed the example of one embodiment of the fire hose concerning this invention in model. It is principal part sectional drawing which showed the example for preferable integration (lamination transfer example) of the structure of the resin layer part which comprises the vertical color line of the hose for fire fighting concerning this invention. It is principal part sectional drawing which showed as a model the other preferable one example of the structure of the resin layer part which comprises the vertical color line of the fire hose concerning this invention (printing example by the all-in-one type resin ink mentioned later). . The relationship between the incident light E and the reflected light R is shown and described as a model. FIG. 9A illustrates recursive reflection, and FIG. 9B illustrates specular reflection.

  Hereinafter, the fire hose of the present invention will be described in more detail with reference to the drawings.

  As shown in FIG. 1, the fire hose of the present invention has a vertical color line 5 on the surface of the jacket 4 of the fire hose 1, and the vertical color line 5 is drawn as an intermittent line. In addition, the length of each part line forming the intermittent vertical color line 5 is drawn with a predetermined regularity and changing in the hose length direction.

  In FIG. 1, reference numeral 2 denotes a tube tip metal fitting (male metal fitting), and 3 a water source metal fitting (female metal fitting). A vertical color line 5 consisting of an interrupted line on the surface of a fire hose jacket 4 having these metal fittings at both ends. have. For fire hoses, the female fitting 3 is normally on the water source side and the male fitting 2 is on the cylinder tip side, and water flows from the water source fitting (female fitting) 3 side to the tube tip fitting (male fitting) 2 side when water is discharged. It is like that. Therefore, when returning, the fire brigade heads from the tube-end fitting (male fitting) 2 side toward the water-source fitting (female fitting) 3 side.

  In the fire hose of the present invention, the vertical color line 5 is formed by an intermittent line, and the length of each part wire constituting the intermittent vertical color line 5 is given a predetermined regularity to the length of the hose. It is drawn by changing the direction. The length of each part line of the intermittent line of the vertical color line 5 is drawn in a predetermined hose length direction so as to change the length of the hose in the direction of the hose. It has been made to recognize the direction of the.

  For example, in the aspect of FIG. 1, the length of each part line of the vertical color line 4 that is intermittent as it goes from the tube end side metal fitting (male metal fitting) 2 side to the water source side metal fitting (female metal fitting) 3 side. The vertical color line 4 is formed so as to become longer stepwise. By forming a fire hose in this way, and by informing firefighters in advance that the length of each part line is the “retraction direction”, Without hesitation, you can know the exact exit direction instantly and return home.

  In the present invention, "the length of each part line constituting the intermittent vertical color line is drawn with a predetermined regularity changing in the hose length direction" means that the hose jacket The length of each part line of the vertical color line that is intermittently present on the outer surface (length in the longitudinal direction of the hose) is generally about 1 m from a hose length that can be visually recognized at a glance (at a glance from a visual point) It has a certain regularity in the length direction of the hose so that it can be recognized that it has a certain directionality in the part of the length range of about several meters (generally up to about 4-5m at the longest). It means changing in one cycle or multiple cycles. That is, in general, since the total length of one fire hose is about 20 m, an interrupted line is formed by changing the length of each part line by exhibiting a plurality of cycles within about 20 m. In addition, it is important that the length of the hose that can be visually recognized as described above is recognized so as to show a certain directionality.

  More specifically, for example, although not particularly limited, the length of each part line is 1-5 cm, 10-15 cm, 20-30 cm, 35-50 cm, 55-85 cm, etc. in order from the shorter one. And a pair (1 cycle) of interrupted lines are formed with equal intervals of about 2 to 5 cm, and the set (1 cycle) (in FIG. 1). It is important that the interrupted line (denoted by S) is drawn on the hose jacket between the ends, with several cycles repeated throughout the length of the fire hose.

  In addition, the vertical color line drawn by the intermittent line should just be able to show directionality, and, contrary to what was shown in FIG. As the length of the wire goes from the tube end side metal fitting (male metal fitting) 2 side to the water source metal fitting (female metal fitting) 3 side, the length of each part line of the intermittent vertical color line becomes shorter step by step. You may be comprised so that it may become.

  In this case, it is important to inform firefighters in advance that the “direction in which the length of each part line becomes shorter” is the retreat direction. The length of each part line described above is an example, and a shorter one or a longer one may be used as appropriate. Further, the number of part lines constituting one set (one cycle) is not particularly limited, but is preferably about 3 to 6 to 7.

  According to the knowledge of the present inventors, the length of each part line gradually increases as it goes from the tube tip side metal fitting (male metal fitting) 2 side to the water source metal fitting (female metal fitting) 3 side. It is preferable to be configured so that the direction of the retreat to be advanced is indicated as a larger part line, so that the retreat direction can be immediately determined. In particular, when the part wire is composed of a resin layer having retroreflective properties and luminous properties, the effect becomes clearer and preferable.

  Preferably, in all of the fire hoses according to the present invention, the regularity mode of the length change should be unified and standardized to any one mode, and if various modes exist in a complicated manner, the process proceeds. It should be noted that the direction of the power retreat direction cannot be determined quickly and instantaneously.

  In the fire hose of the present invention, the width of the vertical color line is preferably about 0.5 cm to 3 cm. This is because it is easy to see even under poor visibility conditions.

  Moreover, it is preferable that a vertical color line | wire consists of the resin layer which contains the luminous material at least and was provided with the luminous property. This is because good visibility of vertical color lines under dark conditions is often required, and it improves visibility by containing a phosphorescent material. This is because the good visibility can be maintained.

  Furthermore, the vertical color line is composed of a resin layer having a retroreflective property and a phosphorescent property containing a large number of glass beads having a refractive index of 1.5 to 2.2 and a particle size of 10 to 250 μm, reflector particles and a phosphorescent material. In addition, it is preferable that the glass beads are unevenly distributed closer to the surface layer and the phosphorescent material is unevenly distributed closer to the inner layer to form the resin layer.

  FIG. 2 and FIG. 3 both show an example of the preferred structure, and a resin layer 6 forming a vertical color line 5 is formed on the surface of the cabinet 4 of the fire hose 1. A glass bead 7, a phosphorescent material 8, and a reflective material 9 are carried on the resin layer 6. Reference numeral 10 denotes an adhesive layer provided as necessary. When the resin layer 6 is formed by a thermal transfer sheet method, it is usually a hot melt resin layer. The entire resin layer 6 may be formed as a single layer as shown in FIG. 3 or may be a single layer in which a plurality of layers are laminated.

  In the fire hose of the present invention, if the vertical color line 5 is configured as shown in FIGS. 2 and 3, the resin layer 6 forming the vertical color line 5 has a recursive reflection characteristic and phosphorescence. It is configured as having both characteristics of sex, and when a firefighter illuminates with a light etc. in the dark, the reflected light returns directly to the firefighter, so that the vertical color The presence and shape of the line 5 (the direction of the retreat) can be visually recognized instantly and accurately. In addition, the vertical color line 5 continues to emit light for a while even when the light irradiation by the light or the like is finished due to the presence of the light storage material or when the light irradiation direction is shifted and changed. The direction of travel will be easier to understand.

  Here, the recursive reflection is substantially the same as the incident direction as shown in FIG. 4A in a model of the relationship between the array of glass beads 7 and the incident light E and the reflected light R. Reflection of the nature of light reflecting in the direction, even from the front or oblique position, when the firefighter irradiates light to the fire hose, it can be recognized by the firefighter as bright direct reflected light, Information given to the fire hose (information on the vertical color line direction of the hose (that is, the direction of the escape line and return path that is the hose line direction and leads to the exit)) can be recognized more immediately and reliably. .

  This recursive reflection is an optical characteristic of a reflective material such as glass beads. In particular, in the present invention, a specific refractive index range (refractive index is 1.5 to 2.2) and a specific refractive index. Use of glass beads having a particle size range (particle size of 10 to 250 μm) is preferable because a retroreflective effect that is particularly excellent in visibility can be obtained. In particular, a more preferable range of the refractive index is 1. 0.8 to 2.1, and the more preferable range of the diameter of the glass beads is 50 to 250 μm, and the most preferable range is 50 to 120 μm.

  FIG. 4B is a model diagram showing the direction of the incident light E and the reflected light R in the specular reflection. In such a reflection (specular reflection), the observer can use the fire fighting from an oblique position. When irradiating light to the hose, the reflected light is inferior in that the information shown on the fire hose (vertical color line) is immediately and surely recognized by the firefighter. .

  4 (a) and 4 (b), B represents a base (substrate, support), but when the base B contains a dye, the color of the dye is reflected light. It will be visually recognized as a color of R, and the visibility can be further improved by the color. A pigment, a dye, or both are used as the coloring matter, and the chromatic color (red, blue, yellow, etc.) is added to the retroreflected light so that the visibility is further improved.

  In a preferred embodiment of the fire hose of the present invention, many glass beads 7 are unevenly distributed particularly near the surface layer of the resin layer 6. Since the glass beads 7 are carried on the resin layer 6 and unevenly distributed near the surface layer, the retroreflection shown in a model in FIG. 4A is more effectively realized.

  The glass beads 7 are preferably colorless and transparent or light colored and transparent. By doing so, the color of the resin layer 6 or the color of the incident light is assumed to be pure and reflected. Light will be visually recognized. The resin layer 6 may contain a pigment or a dye pigment as desired, and the resin layer 6 is typically composed of a pigment and a colorless and transparent resin component as a matrix. preferable.

  And while the fire hose of the present invention of the preferred embodiment described above preferably has a retroreflective property, the resin layer 6 contains particles of the phosphorescent material 8, preferably as essential. Even in a dark situation where the light is not completely irradiated, light is emitted due to its luminous characteristics, so that the firefighter can visually recognize it.

Here, the phosphorescent function is a function that absorbs light energy such as sunlight and fluorescent lamps and emits light by converting the stored energy into visible light, and has been known as a phosphorescent paint. Use what you have. That is, a sulfide type (for example, chemical composition of ZnS: Cu) or an oxide type (for example, chemical composition of SrAl ₂ O ₄ : Eu, Dy) can be used. From the viewpoint of increasing the amount of emitted light (afterglow luminance) and the afterglow time, as well as heat resistance and durability, it is preferable to use an oxide type. The phosphorescent material is preferably used in the form of particles from the viewpoint that the afterglow luminance and the afterglow time can be increased, and the average particle diameter is preferably 0.5 to 200 μm, It is preferably 5 to 100 μm, and most preferably 10 to 60 μm.

  Due to the presence of this phosphorescent material, and preferably, since the glass beads and the resin layer are composed of transparent materials (colorless or light colored), the presence of such a light emitting luminance is reduced. The phosphorescent characteristics can be satisfactorily exhibited without harm.

  In the fire hose of the present invention, when the resin layer forming the vertical color line emits phosphorescent light and / or reflected light, each part line forming the vertical color line has a hose length within the single part line. It is also preferable that the light emitting element is formed so as to exhibit a light-dark difference or a light-dark difference in the direction. It is also possible to show the direction of the retreat more clearly by using the lightness difference or shade difference of the emitted color as an auxiliary, for example, by making the direction of travel on the retreat brighter or darker. It is. In order to realize the light-dark difference or light-dark difference of the emitted color, the content of each part line of glass beads, reflector particles, phosphorescent material and / or pigment, which will be described later, is uniformly constant in the hose length direction. Instead, it can be achieved by having a distribution in the length direction.

  In the present invention, 9 shown in FIGS. 2 and 3 is a light reflecting material (different from glass beads), and in order to positively have a function of reflecting light more strongly, such reflection is performed. Material particles (reflecting mirror) are contained. For example, the reflecting material 9 includes aluminum particles, natural or artificial mica particles, and these particles can be typically used. The mica particles are generally translucent and transmit light half way, so that it is necessary to coat titanium oxide or the like so as to present a white reflecting surface in order to make the color of reflected light clear. preferable. Mica particles are generally thin plate-like particles, and in the present invention, either natural products or artificially synthesized products can be used. Mica particles form a layered structure and can cause multiple layer reflections of light in order to reflect some light and transmit some light. The transmitted light is also reflected by the lower reflecting material (such as mica), and in particular, when a pigment is present, it is reflected through the pigment, and the amount of light as retroreflected light, This contributes to the effect of improving color strength and clarity.

  Reflector particles (such as mica particles) have an average particle diameter (average major axis) of about 0.1 to 100 μm, more preferably 1 to 50 μm, and even more preferably about 5 to 25 μm. If the diameter of the glass beads is smaller than that of the glass beads, it is preferable because it can act as a layer that reflects the light transmitted between the glass beads.

  Further, when the resin layer 6 is constituted by containing a pigment, the particle size of the pigment (pigment, dye) should be as small as possible, preferably about 0.01 to 10 μm, more preferably 0. It is better to use a thing of about 1-1 micrometer. When the particle diameter of the dye is smaller than 0.01 μm, the price is generally high, which is not desirable. When the particle diameter is larger than 10 μm, the mica particle as a reflector particle or a transmissive reflector particle is used. As a result, the rate that is larger than the above becomes high, and as a result, the rate of blocking the light reaching the reflector and the transmissive reflector particles (mica particles) becomes high, and the amount of reflected light is reduced, which is not preferable. .

  In the case of using a medium or a base resin (dispersion medium resin), the resin layer 6 is preferably made of a transparent material that does not affect light emission or color development and a heat resistant material, a so-called transparent ink resin. The resin can be organic or inorganic, and can be water-based or oil-based. Acrylic resin, urethane resin, nylon resin, polyester resin, etc. are easy to handle. Is preferably used.

  Although it does not specifically limit in order to manufacture the fire hose of the preferable aspect of this invention which has the resin layer 6 in which the glass bead 7 is unevenly distributed near the surface, typically, for example, the following (A), (B), and (C).

(A) Transfer sheet method:
In the case of the transfer sheet method, it can be produced by processing in the following order (1) to (5).
(1) A phosphorescent resin layer containing a phosphorescent material 8 is provided by printing or coating with phosphorescent ink on a sheet of beads 6 in which glass beads 7 are spread all over.
(2) Further, a reflective layer is provided by printing or coating with a reflecting material 9 and a resin ink containing a white pigment.
(3) Next, a hot melt adhesive resin layer 10 is printed or coated on the reflective material layer to complete a transfer sheet.
(4) When this transfer sheet is stacked on the fire hose jacket (base material) 4 and hot-pressed, the hot melt resin layer and the fire hose jacket are bonded.
(5) After sufficiently cooling, the base film of the bead sheet is peeled off, and typically, the fire hose according to the present invention having the laminated structure as shown in FIG. 2 can be manufactured.

  In the fire hose formed by transferring in this manner, the glass beads 7 are on the entire surface of the resin layer 6, and therefore, retroreflective is favorably performed. And since the glass bead 7 is transparent, when the phosphorescent material 8 located inside thereof emits light, the light passes through the glass bead 7 and is visually recognized from the outside. On the other hand, the transparent resin containing the phosphorescent material 8 has no shielding property. For this reason, the reflective material 9 and a white pigment (a reflective material coated with a white pigment) are further placed inside, and a reflective material layer (9) having a shielding property is provided. By adopting such a configuration, for example, even if the fire hose is colored, phosphorescence or reflected light can be obtained without being influenced by the color of the fire hose.

  Since the phosphorescent resin layer 8 has no shielding power and allows part of the light to pass therethrough, the light that has passed through can reach the reflection layer 9 and repel the light. The hot melt resin adhesive layer 10 can be made to have elasticity that can sufficiently withstand the swelling of the hose during water discharge by mixing a rubber adhesive resin.

  In the case of a printing method, a screen printing method or the like can be adopted, but it can be manufactured by the following method (B) or (C).

(B) When using a resin ink containing glass beads, a phosphorescent material and a reflecting material, and optionally a pigment (in the present invention, for convenience of explanation, such a resin ink is referred to as an “all-in-one type” resin ink):
In order to print with fluid all-in-one type resin ink and efficiently express both the reflection function and the phosphorescence function, the particle size of each material constituting the resin ink is controlled as follows. create.

  That is, for example, when mixing large particles and small particles in a beaker, they are mixed evenly, but when the beaker is vibrated and tapped, the particles with larger particles gradually become smaller and smaller. Can be caused by printing resin ink, but the glass beads 7 are on the top, then the phosphorescent material 8, and the reflector 9 below, Typically shown in FIG. 3 by adjusting and setting the mutual relationship between the average diameters of the particles (and the specific gravity if necessary) so as to form a layered structure with the dye (dye / pigment). A printed material having a multilayer structure and having both functions of reflection and phosphorescence can be manufactured.

  In forming such a layered structure, the average particle diameter of each particle used should be 10 to 250 μm for glass beads, preferably 50 to 250 μm, most preferably 50 to 250 μm. It is to use the thing of the range of 120 micrometers. It is preferable to use a phosphorescent material having an average particle diameter of 0.5 to 200 μm, more preferably 5 to 10 μm, and most preferably 10 to 60 μm. It is preferable to use a reflector having an average particle diameter of 0.1 to 100 μm, more preferably 1 to 50 μm, and most preferably 5 to 25 μm.

  Within such a range, the mutual relationship between the particle sizes is such that the average particle diameter of the glass beads is larger than that of the phosphorescent material, and the average particle diameter of the phosphorescent material is larger than that of the reflector. It is preferable to use a phosphorescent material layer and a reflective material layer in terms of clearly forming the phosphorescent material and the retroreflective performance. The average particle diameter is 2 to 5 times the average particle diameter of the phosphorescent material, and that the average particle diameter of the phosphorescent material is 2 to 5 times the average particle diameter of the reflective material It is preferable in that it can be formed. If each difference is less than 2 times, it is difficult to form a clear laminated structure, and if it exceeds 5 times, the surface becomes rough or the texture becomes hard and heavy. It is the direction in which the particles easily fall off, which is not preferable. In addition, it is preferable to use a pigment that is smaller than the reflecting material, but since the pigment particles are generally very small, there are few problems in that respect.

(C) In the case of the resin ink for causing the reflection / phosphorescence function by the multistage printing method to appear:
In order to perform multi-stage printing directly on the base material of the fire hose, first, a shielding layer is printed on the base material (hose jacket). When the hose is colored, the shielding layer is to prevent the color from being seen from the surface. Therefore, the shielding layer may be printed with a resin ink containing the reflective material 9 and a white pigment. Next, printing is performed with a resin ink containing the phosphorescent material 7. In this resin ink, a reflective material (a reflective material having a particle diameter smaller than that of the phosphorescent material in order to be positioned further downward in the layer) may be added.
Thereafter, printing is performed with a transparent resin ink containing glass beads 7. The fire hose formed by multi-stage printing in this way has both functions of reflection and phosphorescence.

  As described above, there are various methods for manufacturing the fire hose of the present invention. In particular, when the multi-stage printing / transfer system and the multi-stage printing system are used, the glass beads 7 are supported in an orderly manner. It is possible to manufacture a resin layer 6 that can easily and stably exhibit the retroreflective effect. In the case of manufacturing by a printing method using an all-in-one type resin ink, since the glass beads 7 become a resin layer 6 that is arranged in a somewhat uneven manner, the retroreflective properties are somewhat inferior. According to the various knowledge of the inventors, it is sufficiently high so that there is no problem in practical use, and it is very excellent because the process is simple as a manufacturing method.

Example 1
Using an all-in-one type resin ink that contains all of glass beads, phosphorescent material, reflector, and pigment in one ink, a rotating roll with the resin ink placed directly on the side surface of the fire hose is used. By pressing, a vertical color line was printed in the longitudinal direction of the fire hose.

  The vertical color line is formed by a printing method using all-in-one ink, and has a structure shown in a model in FIG. 3 and has a retroreflective / light-accumulating performance and a shielding coloring function.

  The rotating roll on which the ink is placed has a diameter of 250 mm, and has a notch that is intermittently provided in the circumferential direction on the outermost peripheral surface. Due to the presence of the notch, Corresponding portions are not printed, and intermittent vertical color lines as shown in the model in FIG. 1 are printed.

  Specifically, when printing is performed by rotating the rotating roll on which the resin ink is placed, the part line length is about 76.3 mm, about 63.2 mm, about 50.2 mm, about 37.1 mm, A vertical color line that shortens in the order of about 24.0 mm and about 10.9 mm can be printed, and a non-printing part with a length (constant) of about 21.8 mm is formed between each part line. is there. When the roll is rotated once, the vertical color lines having the above dimensions can be printed for two cycles.

  The resin ink uses a urethane resin as a dispersion medium resin, the refractive index of glass beads is 1.93, the average particle diameter is 53 μm, the average particle diameter of the phosphorescent material is 26 μm, and the average particle diameter of the reflector is 12 μm. There is artificial mica coated white with titanium oxide.

  As shown in Fig. 1, attach the water source side metal fitting (female metal fitting) 3 to the end of each part wire, and the tube end side metal fitting (male metal fitting) on the opposite side of this fire hose. 2 was added.

  As a result of confirming the level of retroreflective function by shining light on this fire hose at night, the reflected light from a distance of 70 m can be clearly seen with the naked eye, even from a considerable distance or under severe conditions It has been confirmed that the length information of each part line of the vertical color line possessed by the hose (information on which is the cylinder base side and which is the cylinder tip side) can be obtained satisfactorily.

In addition, when the level of the phosphorescent function was confirmed, the afterglow luminance was about 320 mcd / m ² , the afterglow time was 1000 minutes or more, the light resistance was 1000 hours or more, and it was satisfactory enough. It was also confirmed that the length information of each part line of the vertical color line possessed by the hose (information on which side is the cylinder base side and which is the cylinder tip side) can be obtained satisfactorily.

Example 2
A fire hose was manufactured in the same manner as in Example 1 except that only the length of each part line of the vertical color line was changed.

  The length of each part line of the vertical color line is about 152.6 mm, about 126.5 mm, about 100.3 mm when printing is performed by rotating the rotating roll on which the resin ink is placed once. , About 74.1mm, about 48.0mm, about 21.8mm can be printed in the vertical color line shortening in order, and between each part line is about 20.0mm length (constant) non-printing A part is formed and one cycle is printed.

  As shown in Fig. 1, attach the water source side metal fitting (female metal fitting) 3 to the end of each part wire, and the tube end side metal fitting (male metal fitting) on the opposite side of this fire hose. 2 was added.

  When this fire hose was evaluated in the same manner as the fire hose of Example 1, as in Example 1, the length information of each part line of the vertical color line of the hose (which is the tube base side and which is the tube tip I was able to get good information). In particular, coupled with the fact that the size of one part line is larger than that of Example 1, it can be judged that it is superior to that of Example 1 in that the retreat is easy to understand even in the dark. It was a thing.

Comparative Example 1
A fire hose was manufactured in the same manner as in Example 1 except that only the length of each part line of the vertical color line was changed.

  The length of each part line of the vertical color line is about 130 mm, and the length of each part line is about 130 mm. A non-printing portion having a length (constant) of about 88 mm is formed between them. A water source side metal fitting (female metal fitting) 3 was attached to one end of the hose, and a tube end side metal fitting (male metal fitting) 2 was attached to the opposite side.

  When this fire hose was evaluated in the same manner as the fire hose of Example 1, the presence of the vertical color line itself can be recognized even at night or in the dark, but in terms of the direction indication of the hose, None of the effects were observed.

1: Fire hose 2: Tube end bracket (male bracket)
3: Tube side metal fitting (female metal fitting)
4: Jacket 5: Vertical color line 6: Resin layer 6
7: Glass beads 8: Luminescent material 9: Reflective material 10: Adhesive layer (hot melt adhesive layer)
E: Incident light R: Reflected light S: One cycle in which the length of each part line of the vertical color line (intermittent line) changes regularly

Claims (7)

  In a fire hose having a vertical color line on the surface of the hose jacket, the vertical color line is drawn as an intermittent line, and the length of each part line constituting the intermittent vertical color line is a predetermined rule. A fire hose characterized by being drawn with varying properties in the length direction of the hose.   The fire hose according to claim 1, wherein the vertical color line is made of a resin layer containing a phosphorescent material and imparted with a phosphorescent property.   The vertical color line is composed of a resin layer having retroreflective properties and phosphorescent properties containing a large number of glass beads having a refractive index of 1.5 to 2.2 and a particle size of 10 to 250 μm, reflector particles and a phosphorescent material, and 3. The fire hose according to claim 1, wherein the glass beads are unevenly distributed closer to the surface layer, and the phosphorescent material is unevenly distributed closer to the inner layer to form the resin layer.   The fire hose according to claim 2 or 3, wherein the resin layer contains a pigment.   When the resin layer forming the vertical color line emits phosphorescent light and / or reflected light, each of the part lines forming the vertical color line may exhibit a difference in brightness or shade of the emitted color in the hose length direction. The fire hose according to claim 4, wherein the fire hose is formed.   The average particle size of the glass beads is larger than the average particle size of the phosphorescent material, and the average particle size of the phosphorescent material is larger than the average particle size of the reflector particles. Fire hose.   The average particle diameter of the glass beads is 2 to 5 times the average particle diameter of the phosphorescent material, and the average particle diameter of the phosphorescent material is 2 to 5 times the average particle diameter of the reflector. The fire hose according to claim 6.

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