JP2001200483A - Rope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To impart a large buoyancy to a rope, and to maintain a light-emitting function over a long period. SOLUTION: This rope 10 is formed by using many hollow fibers 14 for imparting the buoyancy as a core material, and twisting a luminous fiber 16 and optionally a solid nonluminous fiber 18 around the core material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rope having a buoyancy and a luminous action, and more particularly to a rope used for anchoring a ship at sea, setting up a tent at a campsite, or used for a fixed net. The present invention relates to a rope suitable for use.

[0002]

2. Description of the Related Art A luminous rope using a phosphorescent yarn has been proposed for various signs such as a construction site at night and a road sign (for example, Japanese Patent Application Laid-Open No. H10-168773). The light-emitting rope is formed by twisting a light-storing twisted yarn formed by twisting one or several light-storing yarns and a normal twisted yarn formed by twisting original yarns.

[0003] Since the light emitting rope of this prior art includes a luminous twisted yarn formed by twisting luminous yarns, the position of the rope can be confirmed at night or in a dark place. However, the rope is composed of only the stranded yarn. Because the rope is heavier depending on how it is twisted, it is not possible to impart buoyancy to the rope.For example, if the rope is used to suspend an anchor at sea, I can not confirm the direction and speed of the tide.

On the other hand, there has been proposed a twisted yarn formed by twisting a plurality of phosphorescent fibers while forming a hollow portion therein (JP-A-8-226032). However, this technique forms a hollow portion in the fiber twisted layer in the process of twisting the fiber, so it is difficult to form a yarn having a large hollow cross section, and it is not possible to form a rope having a large buoyancy. was there.

Unlike luminous paints, luminous phosphors do not contain radioactive materials, absorb light energy from the outside such as sunlight or fluorescent lamps, and store the light energy. It emits light with high luminance for a long time after being emitted. However, all of the phosphorescent yarns conventionally used in light-emitting ropes contain a phosphorescent phosphor composed of a sulfide phosphor. I have. However, this phosphor is disadvantageous in that it is chemically unstable, has low durability and weather resistance, and has low light resistance. For example, the most commercially available phosphor of zinc sulfide (ZnS: Cu) is:
When it absorbs moisture, it causes photodecomposition by ultraviolet rays, causing blackening or lowering of luminance.

[0006] The light emitting rope is required to be used on the sea where it is exposed to highly erosive seawater or used outdoors where it is exposed to wind and rain. There is a disadvantage that the light emitting function cannot be maintained for a long time due to the deterioration of the phosphor contained in the yarn.

[0007] Luminescent fibers have the effect of spontaneously emitting light at night or in the dark due to the luminous function and the light-emitting function, but they cannot impart a decorative effect to the rope in bright places. It is not possible to obtain a rope having a good external appearance.

[0008]

SUMMARY OF THE INVENTION One object of the present invention is to provide a rope having a large buoyancy and capable of maintaining a light emitting function for a long time.

Another problem to be solved by the present invention is that
Has a large buoyancy, maintains the light emitting function for a long time,
Another object of the present invention is to provide a rope capable of performing a design process.

[0010]

A basic object of the present invention is to provide a rope formed by assembling a plurality of fibers, wherein the plurality of fibers include at least a hollow fiber and a luminous fiber, Luminescent fibers are chemically stable, do not contain radioactive substances, have high afterglow brightness, long afterglow time, and light-storing phosphors containing light-storing, durable and weather-resistant phosphorescent phosphors. It is an object of the present invention to provide a rope, wherein the rope is a mixed fiber formed by gathering hollow fibers and luminous fibers so that at least the luminous fibers are exposed on the surface.

The phosphorescent phosphor used in the present invention comprises:
(1) A compound represented by MAl ₂ O ₄ , wherein M contains a mother crystal of a compound composed of at least one metal element selected from the group consisting of calcium, strontium, and barium, or ( 2) aluminum oxide,
It may contain a mother crystal of at least one compound selected from the group consisting of calcium oxide and magnesium oxide (see claim 2).

[0012] In the means for solving the problems of the present invention, the plurality of fibers may further be a decorative fiber (colored fiber or fluorescent fiber) containing a coloring agent or a fluorescent substance, and the hollow fiber, the phosphorescent fiber, and the decorative fiber. Are formed such that the phosphorescent fiber and the decorative fiber are exposed on the surface (see claim 3).

The hollow fiber used in the present invention may be left open (hollow) over its entire length. However, in order to prevent water or the like from entering inside, the end portion and / or the middle of the hollow fiber may be used. May be closed intermittently (claim 4).

[0014] In the means for solving the problems of the present invention, the rope has a core material made of a fiber other than the phosphorescent fiber, and the core material is a fiber having a color that easily reflects light when the phosphorescent fiber stores or emits light. (Claim 5).

As described above, when the rope is formed by assembling the hollow fiber and the phosphorescent fiber by twisting or the like,
In particular, the rope can be lightened by hollow fibers,
Therefore, the handling of the rope becomes easy, and a large buoyancy can be given to the rope. This can be used, for example, when the rope is used to suspend an anchor at sea, where the rope is partially floating above the sea to determine the direction and speed of the tide flow. If the inner diameter of the hollow fiber is as small as several to several tens of μm, it is immersed in water for several days even if the end or the middle is not closed intermittently or the hollow fiber is damaged by external impact or the like. Even if it does, water hardly permeates into the hollow fiber, and buoyancy does not disappear.

On the other hand, the phosphorescent phosphor contained in the phosphorescent fiber used in the rope of the present invention is not a sulfide phosphor but a compound represented by MAl ₂ O ₄ or aluminum oxide, calcium oxide, or the like. When at least one compound selected from the group consisting of magnesium oxide is used as a mother crystal, it is chemically stable, has high durability, weather resistance, and light resistance, and therefore has a good light storage function of a rope. The light emitting function is not deteriorated.

Therefore, even when the rope is used on the sea where it is exposed to highly corrosive seawater, or when it is used outdoors where it is exposed to wind and rain, the light-storing fiber does not deteriorate and the light-emitting function is maintained for a long time. Can be maintained.

The decorative fiber used together with the light-storing fiber gives the rope a design effect, so that a rope having a good appearance can be obtained. Further, since the light-storing fiber is difficult to confirm light emission in the daytime, it is difficult to distinguish it from a normal rope. Therefore, the presence of the decorative fiber can improve the visibility both day and night. In particular, it is preferable to use a decorative fiber having a similar color to the light emission color of the luminous fiber, since a strong image can be given to the user as a "light emitting rope".

Furthermore, when the end and / or the middle of the hollow fiber is closed intermittently, it is possible to reliably prevent water from entering the hollow fiber when the rope is used on water or the like. Therefore, it is preferable because the buoyancy can be prevented from lowering.

When the core material of the rope has a light reflecting color,
Since light can be efficiently absorbed by the light-storing fiber or light can be effectively emitted from the light-storing fiber by the light reflecting action of the core material, the discriminability of the rope can be further improved.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an embodiment of the present invention will be described in detail. FIG. 1 and FIG. 2 show a rope 10 according to an embodiment of the present invention. Numeral 10 is composed of a large number of fibers 12 assembled together by twisting or the like. These fibers 12 include hollow fibers 14, luminous fibers 16, and solid non-luminescent fibers 18.
And In the illustrated form, a large number of hollow fibers 14
Is arranged at the center as a core material 10C of the rope 10, and the luminous fiber 16 and the solid (having no hollow portion) non-light emitting fiber 18 are gathered around the hollow fiber 14 as the core material 10C and twisted. ing. The core material 10C is shown in FIG. 1 as a bundle of the hollow fibers 14, but may be a twisted body.

These fibers 14 to 18 are made of a thermoplastic resin such as polyethylene, polypropylene, polyvinyl chloride, polyamide and polyester. In addition,
Each of the fibers 14 to 18 may be a single fiber, or may be an aggregate or a stranded body (twisted yarn) of a plurality of fibers.

As shown in FIG. 4, the hollow fiber 14 is a fiber having a cylindrical hollow portion 14a.
Preferably have a high hollow ratio of about 35 to 40%. As such hollow fibers, those commercially available from Teijin Limited under the trade name "Aerocapsule" can be used. The “aerocapsule” has a buoyancy (1.2 times its own weight) about 65% larger than that of ordinary fibers.

If the hollow fiber 14 has a small hollow ratio (if the cross section of the hollow portion 14a is small), it is difficult for water to enter the hollow portion 14 due to the surface tension of the water. Actually, the inner diameter of the hollow fiber 14 is several to
If it is as small as several tens of μm, even if the end or the middle is not closed intermittently, or if the hollow fiber is damaged by external impact, etc. It has been confirmed that there is almost no infiltration and buoyancy is not lost. However, if the hollow fiber 14 has a high hollow ratio, as shown in FIG. 5, both ends and / or the middle of the hollow fiber 14 may be intermittently closed by heat fusion or the like. In this way, water does not enter the hollow fiber 14 at all, and the buoyancy of the rope 10 can be maintained.

As shown in FIGS. 1 and 2, when the rope 10 has a core material 10C made of a hollow fiber 14, the hollow fiber 14 serving as the core material 10C emits light when the luminous fiber 16 stores or emits light. It is preferable to use a fiber having a color easily reflected. In this way, when the rope 10 absorbs light from the outside, the luminous fiber 16
The light absorbed by the outside of the rope 10 is reflected by the core material 10C and absorbed by the opposite surface (inner surface) of the light-storing fiber 16, so that the light-storing property is improved. On the contrary, when the light storage fiber 16 emits light at night or in a dark place, light emitted not only from the outer surface but also from the inner surface of the light storage fiber 16 is reflected by the core material 10C to emit light, so that the light emission is improved.

The hollow fiber 14 is used as a core material for the rope 1
Instead of being located at the center of 0, as shown in FIG.
The light-storing fiber 16 and the solid non-light-emitting fiber 18 may be twisted together, or a part of the hollow fiber 14 may be used as a core material and another part may be twisted together with the fibers 16 and 18. In any case, when the usage amount of the hollow fibers 14 is larger than the usage amounts of the other fibers, the rope 10 can be further reduced in weight and large buoyancy can be obtained. FIG. 3 (A)
In the embodiment shown in FIG. 3, the hollow fiber 14, the luminous fiber 16, and the solid non-light emitting fiber 18 are twisted in such a manner that they appear on the surface of the rope 10, and in the embodiment shown in FIG.
The light-storing fiber 16, the hollow fiber 14, and the solid non-light-emitting fiber 18 are twisted so as to appear on the surface of the rope 10 in this order. If the amount of the hollow fiber 14 is increased, the weight of the rope 10 is further reduced. Can be

As shown in FIG. 6, the light-storing fiber 16 is a fiber in which a light-storing phosphor-containing substance is mixed (added) into a fiber structure. The phosphorescent phosphor 20 used in the present invention includes:
As with conventional luminous materials and fluorescent materials (phosphors), it absorbs energy when stimulated by sunlight or fluorescent light, and emits the absorbed energy as light gradually over a long period of time even after the stimulation is stopped. However, unlike conventional luminous materials, they do not contain radioactive substances themselves, are chemically stable, have a long afterglow time, and have light resistance (change in luminance with time in a predetermined humidity environment). ) And a material having high weather resistance and durability.

Such a substance is a compound represented by MAl ₂ O ₄ , wherein M is a mother crystal formed of at least one metal element selected from the group consisting of calcium, strontium and barium. (For example, see Japanese Patent Application Laid-Open No. 7-11250). As such a phosphorescent phosphor material, for example,
There is N Nightlight (trade name) developed and marketed by Nemoto Special Chemical Co., Ltd. N luminous light is obtained by mixing a compound represented by MAl ₂ O ₄ with europium as an activator, further adding boric acid as a flux, and about 1 hour at 1300 ° C. in a reducing atmosphere such as a nitrogen-hydrogen mixed gas. It is manufactured by firing, cooling, crushing, and sieving.

Further, as another example of such a phosphorescent substance, at least one compound selected from the group consisting of aluminum oxide, calcium oxide and magnesium oxide can be used as a mother crystal, For example, there is Chemitech Picarico CP-04 (trade name) developed and marketed by Chemitech Corporation.

The phosphorescent phosphor-containing material is a phosphor coating formed by using the phosphorescent phosphor 14 as a pigment and adding it to a resin solution as a vehicle component. The phosphorescent phosphor 14 is a powder having a particle size of about several tens to several hundreds of μm, and can be further finely pulverized to a particle diameter of several μm.

The addition ratio of the phosphorescent phosphor 14 to the resin solution is not particularly limited and can be adjusted as appropriate. However, considering the light emitting condition and the fiber strength, it is 5 to 20% by weight. A range is preferred. If the addition ratio of the phosphorescent phosphor 14 is low, sufficient light storage and light emission cannot be achieved, and the luminance is reduced. Therefore, the addition ratio is preferably high.

The resin component of the phosphorescent phosphor-containing material must be a translucent resin component so that the phosphorescent phosphor 14 therein absorbs light through the resin component or emits light through the resin component. Is required. Such resin components include transparent materials (including translucent) such as acrylic resins, polyvinyl chloride, polystyrene, polycarbonate, methacryl, polyphenylene, polyethylene, polyurethane, and alcohol resins. Can be used.

The luminous fiber 12B is produced by mixing (adding) an appropriate amount of luminous phosphor-containing substance to the raw material component of the resin fiber to produce a fiber material, and this fiber material is manufactured by a predetermined spinning method. The phosphorescent phosphor 20 is adhered to the resin fiber by solidification within the resin fiber of the resin component. It is to be noted that a luminous fiber which has been proposed as having a luminous function by including such a luminous phosphor can also be used (for example, JP-A-10-140421 and JP-A-11-182).
No. 4).

The results of measurement of the afterglow characteristics and the light fastness of the phosphorescent fiber to which the phosphor was added and the phosphorescent fiber containing various N night light having different amounts of strontium were measured.

(Afterglow property) A sample (phosphorescent fiber) was stimulated with light energy of 200 lux for 10 minutes, and the luminance was measured after a lapse of a predetermined time after the stimulation was stopped. The zinc sulfide-based phosphor was added. When the brightness of the light-storing fiber to which N night light was added was compared with the brightness of a given time after the elapse of a predetermined time of 1, the brightness of the light-storing fiber to which N night light was added was 30 minutes, depending on the amount of strontium. It was confirmed that the luminance afterward was 1.11 to 7.04, and the luminance after 100 minutes passed was from 3.02 to 19.2. (Light resistance time) The sample was placed in an atmosphere of saturated humidity and irradiated at a position of 30 cm under a 300 W mercury lamp for a predetermined time, and the luminance change was measured. Assuming that the luminance before the test was 1, a zinc sulfide-based phosphor was used. The light resistance was 0.91 when irradiated for 3 hours, 0.82 when irradiated for 6 hours, and 0.52 when irradiated for 12 hours, but the fiber using N night light was 3 to 6 hours. It was confirmed that there was almost no change in luminance with the irradiation time. Therefore, it can be seen that it is particularly preferable to use a fiber to which N luminous paint is added especially for a rope used in a severe outdoor atmosphere.

A rope 10 according to another embodiment of the present invention
7 is shown in FIG. 7, and the rope 100 further includes a decorative fiber (colored fiber or fluorescent fiber) 22 containing a coloring agent or a fluorescent substance in addition to the rope of FIGS. 1 and 2 are denoted by the same reference numerals. As shown in FIG. 7, the decorative fiber 22 is twisted together with the luminous fiber 16 and the solid non-light emitting fiber 18 so as to be exposed on the surface of the rope 100.

In the embodiment of FIG. 7, the hollow fiber 14 is
As in the form of (A) or FIG. 3 (B), the fibers may be twisted together with other fibers 14, 16, 18, and 22 instead of as a core material, or some may be used as a core material and others may be twisted. May be used.

In the embodiment shown in FIG. 1, FIG. 2 or FIG. 7, only the hollow fiber 14 and the luminous fiber 16 (see FIG. 8) or the hollow fiber 14 are used without using the solid non-light emitting fiber 18.
3, only the phosphorescent fiber 16 and the decorative fiber 22 (see FIG. 9) may be used. Further, in this case, the hollow fiber 14 is not a core material, but is entirely or partially used for twisting as in the embodiment of FIG. You may.

Since the rope of the present invention contains the hollow fiber 14, the weight of the rope can be adjusted according to the amount of the hollow fiber used to reduce the weight. This facilitates the handling of the rope, such as transporting and installing it, and also gives buoyancy to the rope so that it can be partially floated on the water or sea, and partly floated on the water or sea, to check the position of the rope, It can be used to check the flow and the like.

Further, since the rope of the present invention contains the luminous fiber 16, it receives and stores light energy from sunlight, a fluorescent lamp, and an external light, and the light energy is emitted and emitted at night or in a dark place. .

The rope of the present invention can be used not only outdoors, such as on the ground, on the water, at sea, but also indoors. Some examples of use are as anchor ropes for ships, tent ropes for campsites, stationary nets, enclosure ropes at construction sites, signs for various objects such as electric poles, and the like. In particular, when used as an anchor rope for hanging an anchor at sea, the rope can be floated on the sea to check the direction and speed of tide flow.

In the above embodiment, the plurality of fibers are gathered by twisting with or without the use of the core material 10C, but may be knitted or may be simply bundled and hardened with a binder such as resin. Therefore, in the present invention, the term “assembly” is meant to include all states such as twisting, braiding, and bundling.

When the core material 10C is used, the core material 10C may be the hollow fiber 14 alone or a combination of the hollow fiber 14 and a solid fiber (a fiber having no hollow portion). Is also good. In this case, it is preferable that both the hollow fiber 14 and the solid fiber have a light reflecting color.

[0044]

According to the present invention, as described above, since the rope is formed by twisting the hollow fiber and the luminous fiber together, the rope can be reduced in weight particularly by the hollow fiber. Therefore, the handling of the rope becomes easy, and the rope can be given a large buoyancy. This can be used, for example, to ascertain the direction and speed of tide flow when the rope is used to suspend anchors at sea, when the rope is floating at sea.

On the other hand, the phosphorescent phosphor contained in the phosphorescent fiber used in the rope of the present invention is different from a sulfide-based phosphor, a compound represented by MAl ₂ O ₄ or aluminum oxide, calcium oxide, When at least one compound selected from the group consisting of magnesium oxide is used as a mother crystal, it is chemically stable, has high durability, weather resistance, and light resistance, and thus has a good light storage function of the rope. And the light emitting function are not reduced.

Therefore, even when the rope is used at sea exposed to highly corrosive seawater or outdoors when exposed to wind and rain, the light-storing fiber does not deteriorate and the light-emitting function is maintained for a long period of time. Can be maintained.

The decorative fiber used together with the light-storing fiber gives the rope a design effect, so that a rope having a good appearance can be obtained. Can be distinguished from normal rope.

Further, when the end and / or the middle of the hollow fiber is closed intermittently, it is possible to reliably prevent water from entering the hollow fiber when the rope is used on water or the like. Therefore, a decrease in buoyancy can be prevented.

When the core material of the rope has a light reflective color,
Since light can be efficiently absorbed by the light-storing fiber or light can be effectively emitted from the light-storing fiber by the light reflecting action of the core material, the discriminability of the rope can be further improved.

[Brief description of the drawings]

FIG. 1 is a side view showing a part of a rope according to one embodiment of the present invention.

FIG. 2 is a cross-sectional view of the rope of FIG.

FIG. 3 shows a rope according to another embodiment of the present invention, and FIG. 3 (A) is a side view of the rope using a small amount of hollow fiber;
FIG. 3B is a side view of the rope in which the usage amount of the hollow fiber is increased.

FIG. 4 is an enlarged cross-sectional view of a hollow fiber used in the present invention.

FIG. 5 is a side view showing a state where a part of the hollow fiber is partially closed by heat fusion or the like.

FIG. 6 is an enlarged cross-sectional view of a light storage fiber used in the present invention.

FIG. 7 is a cross-sectional view of a rope according to a different embodiment of the present invention.

FIG. 8 is a cross-sectional view of a rope modified from the form of FIG. 1;

FIG. 9 is a cross-sectional view of a rope modified from the form of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Rope 10C Core material 12 Fiber 14 Hollow fiber 14a Hollow part 16 Luminescent fiber 18 Solid non-luminous fiber 20 Luminescent fluorescent substance 22 Decorative fiber (colored fiber or fluorescent fiber) 100 Rope

Continued on the front page F term (reference) 3B153 AA02 AA32 AA38 AA40 BB20 CC13 CC15 CC21 CC22 CC80 FF08 FF09 FF17 FF23 GG08 GG32 GG40

Claims (5)

[Claims] 1. A rope formed by assembling a plurality of fibers, wherein the plurality of fibers includes at least a hollow fiber and a luminous fiber, and the luminous fiber is chemically stable and is a radioactive substance. Is a fiber mixed with a luminous phosphor-containing substance containing a luminous phosphor having a high afterglow luminance, a long afterglow time, and a light resistance, durability and weather resistance without containing the hollow fiber and the luminous fiber Characterized in that at least the light-storing fibers are assembled so as to be exposed on the surface. 2. A rope formed by assembling a plurality of fibers, wherein the plurality of fibers include at least a hollow fiber and a luminous fiber, and the luminous fiber is mixed with a luminous phosphor-containing material. Fiber, wherein the phosphorescent phosphor of the phosphorescent substance-containing substance is a compound represented by MAl ₂ O ₄ , wherein M is at least one or more selected from the group consisting of calcium, strontium, and barium. Or at least one compound selected from the group consisting of aluminum oxide, calcium oxide, and magnesium oxide as a mother crystal, and the hollow fiber and the luminous fiber are at least the luminous fiber. A rope characterized by being formed so as to be exposed on the surface. 3. The rope according to claim 1, wherein the plurality of fibers further include a decorative fiber containing a coloring agent or a fluorescent substance, and the hollow fiber, the luminous fiber, and the decorative fiber. A rope, wherein the phosphorescent fibers and the decorative fibers are collectively formed so as to be exposed on the surface. 4. The rope according to claim 1, wherein the hollow fiber is intermittently closed at an end or in the middle thereof. 5. The rope according to claim 1, further comprising a core made of a fiber other than the light-storing fiber, wherein the core has a color in which the light-storing fiber easily reflects light when storing or emitting light. A rope characterized by being a fiber having a rope.