JP3489599B2 - Laminated tube - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated pipe, and more particularly to a laminated pipe preferably used for fishing rods and the like.

[0002]

2. Description of the Related Art For example, fishing rods are required to have improved mechanical properties such as higher elasticity and higher strength and to be lighter in weight, and also have excellent surface protection properties because fresh water, sea water and sand adhere to the surface. Required.

Fiber reinforced resin (FRP) is known as one of the materials for forming a laminated pipe that meets such requirements.
Widely used from the past. Specifically, JP-A-3-
After a prepreg impregnated with a thermosetting <br/> synthetic resin wound to the core with high strength and high elastic fiber reinforcement 10631 discloses a laminated tube to form it by firing pressure, thereafter, After performing surface polishing and surface treatment on the outer surface of this laminated tube, a coating material in which a curing agent is mixed with a main agent composed of trifluorochloroethylene resin is applied, and then this is cured to cure the laminated tube.
A method of manufacturing a fishing rod has been proposed in which a paint film is formed on the outer surface .

[0004]

However, in the production of the above-mentioned fishing rod, for example, the step of polishing the surface using a Scotch sander or the like → After washing with water, the temperature is raised at 60 to 100 ° C. for 2 hours.
Step of drying for 0 to 60 minutes → After wiping thinner, 20
Step of drying at ℃ for 10 minutes → Step of mixing trifluoroethylene chloride main agent and curing agent → Shigoki coating step → 15〜
Step of performing natural drying at 25 ° C for 60 minutes → 80 to 100
A large number of man-hours such as a step of forced drying at 120 ° C. for 120 minutes are required, and a large amount of energy is consumed for drying. That is,
In the conventional laminated pipe manufactured by such a manufacturing method, the manufacturing process after molding the laminated pipe is complicated and requires a lot of energy, and the coating film is formed on the outer surface of the laminated pipe. Therefore , blister may occur, and the surface hardness of the paint film formed on the outer surface of the laminated tube is H-2H in terms of pencil hardness, which is not sufficient, and is easily scratched. There is a problem that the weight increases and it is difficult to reduce the weight.

The present invention has been made in view of the above circumstances, and an object of the present invention is that the production is easy and the energy required for the production is small, and the coating film is formed without a coating process. since there is with possibility of blistering occurs becomes nil, the outermost layer of the surface hardness is also sufficient, lubricating surface, excellent water repellency is to further provide a lightweight easy stacking tube from .

[0006]

Means for Solving the Problems The invention of claim 1 of the present patent application in order to achieve the above object, the high strength and high modulus fibers
In a laminated tube formed by winding a prepreg made by impregnating a reinforcing material with a thermosetting synthetic resin around a core metal , pressurizing and firing ,
This is formed on the outer surface of the prepreg fired body forming the laminated tube.
A laminated pipe characterized by containing a solid lubricating powder so as to be exposed on the outer surface. The invention of claim 2 is obtained by impregnating a high-strength and high-elasticity fiber reinforced material with a thermosetting synthetic resin. A laminated tube obtained by winding a prepreg around a core metal and pressurizing and firing the prepreg.
It is a laminated pipe, wherein the high hardness particles are contained so as to be exposed on the outer surface to the outer surface, according to claim 3
Of the present invention, a prepreg made by impregnating a high-strength and high-elasticity fiber reinforced material with a thermosetting synthetic resin is wound around a core metal, and pressed and baked.
A laminated pipe formed by
The laminated pipe is characterized in that the outer surface of the prepreg fired body contains solid lubricating powder and high hardness fine particles so as to be exposed on the outer surface .

[0007]

The laminated tube of the present invention is a preform for forming the laminated tube.
The solid lubricating powder 3 and / or the high hardness fine particles 4 or both are contained on the outer surface of the prepreg fired body so as to be exposed on the outer surface .

Therefore, in manufacturing this laminated pipe, the surface of one layer of the prepreg forming the outermost layer of the laminated pipe is used .
Face the solid lubricating powder 3 is uniformly dispersed attaching one or both of the high hardness particles 4, pressurized by winding the metal core by the following conventional method
It suffices to bake and shape , and polishing and drying after forming the laminated tube.
Wei paint with easily manufacture as required etc.
There is no need for maintenance and application work, and there is no need to dry the paint film, so a large amount of energy is not required for manufacturing. Moreover, the paint on the outer surface of the laminated pipe
Since it does not have a film, no blister is generated and it is easy to reduce the weight.

Further, due to the action of the solid lubricating powder 3 and the high hardness fine particles 4 contained in the outer surface 1 of the laminated pipe, this laminated pipe has sufficient water repellency and lubricity. Further, since the high hardness particles 4 contained in the outer surface of the product layer tube is exposed to the surface, high surface hardness. Therefore, for example, in a fishing rod using this laminated pipe, the fishing line does not adhere to the surface of the fishing rod even when it is used in the rain, and the line is not fed out, fluffed, or wound. In particular, in the swing-out rod using this laminated tube, the surface of the rod is not damaged even when the fishing rod is taken in and out, and the rod can be smoothly taken in and out.

Further, this laminated tube since contains solid lubricant powder 3 on the outer surface thereof is exposed on the surface and baking
It has excellent releasability from the wrapping tape for pressing the outer surface when forming . Therefore, it is not necessary to coat the winding tape with silicone, and the manufacturing cost can be reduced.

Prepreg firing for forming the laminated tube
When the coloring material 6 is contained in the outer surface of the adult , the appearance is
It is possible to form a laminated tube having a beautiful color tone.

[0012]

Embodiments of the present invention will now be described more specifically with reference to the drawings. In the first embodiment shown in FIG.
Layered tube composed of at least two-layered structure of the outermost layer 1 and the inner layer 2 of, such a laminated tube, the prepreg formed by impregnating a thermosetting synthetic resin to the core metal with high strength and high elastic fiber reinforcement It is formed by winding , pressurizing and firing .

[0013] Here, prepreg, for example, can easily be obtained according to conventional methods by impregnating a thermosetting synthetic resin raw material in a molten state to a high strength and high elastic fiber reinforcement, that is also commercially available. Specifically, for example, epoxy resin is coated on release paper to form a film, and then this film is pulled in one direction with high strength and high elasticity fiber.
A prepreg can be obtained by laminating a sheet on a reinforcing material that has been aligned or woven into a sheet .

Examples of the high-strength and high-elasticity fiber reinforcing material include inorganic fibers such as carbon fiber, glass fiber, ceramic fiber, zirconia fiber, boron fiber, titanium wire, titanium foil tape, stainless fiber, beryllium fiber; cotton, flax. , Natural fibers such as cannabis, jute and sisal; heat-resistant organic synthetic fibers such as aromatic polyamide fibers and polyester fibers , or a combination thereof.
Examples include those aligned in the direction or woven . For example, these fiber reinforcements may be surface-treated in advance with, for example, borane, silane, aminosilane or the like for the purpose of improving the adhesiveness with the resin.

The high-strength and high-elasticity fiber reinforcing material is, for example, unidirectionally drawn or woven into cloth, roving, roving cloth, chopped strand mat, or the like .
It is used in a curved shape. As the synthetic resin raw material to be impregnated in such a high strength and high elasticity fiber reinforced material, those used for ordinary fiber reinforced resin are preferably used. Specific examples thereof include thermosetting resins such as epoxy resins, unsaturated polyesters, vinyl ester resins, polyimide resins, phenol-formaldehyde initial condensates, and polyurethane resin compositions.

The content of the high strength and high elastic fiber reinforcement in prepreg, for example, the melt viscosity of the synthetic resin material, but may be suitably determined depending on the type or form such reinforcement, usually, the volume of the entire prepreg 50 to 70
It is about% by volume, preferably about 55 to 65% by volume.

For example, the prepreg obtained as described above is usually wound around a core metal and then the outer surface is pressed.
It is made of high-strength and high-elasticity fiber-reinforced resin (FRP) by winding a winding tape for storage and hardening by heating at a temperature of about 120 to 180 ° C for about 120 to 140 minutes.
It is intended to provide a laminated tube .

A process for forming the outermost layer 1 of such a laminated pipe
As shown in FIG. 1, the solid lubricating powder 3 is uniformly embedded in the surface of one layer of the prepreg and the solid lubricating powder 3 is exposed on the surface of the outermost layer 1.

The second embodiment of the present invention shown in FIG.
Table of one layer of the prepreg to form the outermost layer 1 of that laminate tube
The high hardness fine particles 4 are uniformly embedded in the surface, and the high hardness fine particles 4 are exposed on the surface of the outermost layer 1.

Furthermore, the third aspect of the present invention shown in FIGS.
Of the prepreg forming the outermost layer 1 of the laminated tube according to the embodiment
The solid lubricating powder 3 and the high hardness fine particles 4 are uniformly embedded in the surface of one layer, and the solid lubricating powder 3 and the high hardness fine particles 4 are exposed on the surface of the outermost layer 1.

[0021]

Examples of the solid lubricating powder 3 in the present invention include silicone resin powder and fluororesin powder such as tetrafluoroethylene resin. Then, these solid lubricant powder 3 is a combination of singly or two or more used
You may do it .

The average particle size of the solid lubricating powder 3 is usually 0.3.
It is about 125 μm, preferably about 10 to 40 μm. This solid lubricant powder 3 forms the outermost layer 1 of the laminated pipe.
The prepreg to be formed is evenly embedded on the surface of one layer .
Then , the solid lubricating powder 3 and the mixture of the solid lubricating powder 3 and the high hardness fine particles 4 in the third embodiment are softened by heating the resin on the outermost layer of the prepreg wound around the cored bar a plurality of times. So that it adheres sufficiently, and then wind the winding tape in this state .
And pressurize.

Independently as in the second embodiment, or in the third embodiment.
The high hardness particles 4 to be used together with the solid lubricant powder 3 as施例, for example, spherical alumina particles, spherical SiC particles, spherical SiN particles include ceramic fine particles such as spherical zirconia particles.

The high-hardness fine particles 4 have a Vickers hardness of usually 550 or more, preferably 1200 or more, and an average particle diameter of usually 1 to 60 μm, preferably 16 to 40 μm. .

When the high-hardness fine particles 4 are used together with the solid lubricating powder 3, the high-hardness fine particles 4 are mixed in a weight ratio of (high-hardness fine particles 4) :( solid lubricating powder 3), usually about 80:20 to 20:80 .
The mixture is applied, but this ratio may be changed depending on the application such as a fishing rod.

[0027]

In addition, 1 of the prepreg which forms the outermost layer 1
As shown in the fourth embodiment of FIG. 5, the solid lubricant powder 3
May be a coloring material 6 with, in FIG. 6
May be a coloring material 6 with high hardness particles 4 as shown in the fifth embodiment, the sixth embodiment in FIG. 7
With the solid lubricant powder 3 and the high hardness particles 4 may be a coloring material 6 as shown Te. When the outermost layer 1 contains the coloring material 6, the surface can be colored while reducing the weight as compared with the case of forming the paint film.

In addition, the prepreg 1 forming the outermost layer 1
As a mode in which the coloring material 6 is contained in the layers , the outermost layer 1 is formed.
Solid lubricant powder 3 pre-colored for one layer of prepreg to be formed
If Ru is contained, 1 of the prepreg to form the outermost layer 1
If Ru is contained high hardness particles 4 which is previously colored layer fraction,
And a case where the coloring material 6 is added to the thermosetting synthetic resin impregnated in the prepreg.

Here, as the coloring material 6, organic pigments, inorganic pigments, dyes, metal powders, diffuse reflection materials and the like are preferably used. Organic pigments are mainly those in which dyes are metal compounds that are insoluble in water, and have excellent hiding power. Specific examples include Hansa yellow, Irgadine yellow, Nova balm orange, Watching red, Lake red 4R, Shinkashia red B, dioxazine violet, copper phthalocyanine blue, and copper phthalocyanine green.

Examples of the inorganic pigment include zinc (Zn), titanium (Ti), iron (Fe), lead (Pb),
Examples thereof include chromium (Cr) compounds. More specifically, for example, yellow lead, yellow lead iron oxide, titanium yellow,
Cadmium yellow, molybdate orange, red iron oxide, cadmium red, ultramarine blue, navy blue, cobalt blue,
Examples include chromium oxide, cobalt green, and cobalt purple.

Examples of the metal powders include pure gold powder, main silver powder, tin powder, tin pear paste, western gold powder, pear paste, aluminum powder, aluminum pear paste, various lacquer powders, astroflakes, ergies, glitter, Examples include algae powder and plated glass powder.

Examples of the irregular reflection material include mica pearl foil in which natural mica (mica) is coated with titanium dioxide and iron oxide. When a dye is used, translucent coloring is possible.

For example, these various colorants may be used alone or in combination of two or more. The particle size of the coloring material 6 is preferably 10 μm or less, and the specific gravity thereof is preferably small. Further, the coloring material 6 is provided inside the prepreg forming the outermost layer 1 as in the fourth to sixth embodiments shown in FIGS. 6 to 8, and the solid lubricating powder 3 and the high hardness fine particles are provided outside the prepreg. 4 is preferably arranged.

This laminated tube is efficiently manufactured, for example, as follows. That is, a prepreg obtained by impregnating the high-strength and high-elasticity fiber reinforced material with a thermosetting synthetic resin is cut into a predetermined shape according to a pattern drawing.

Next, each prepreg cut into a predetermined shape is wound around a core metal to be laminated to form a laminated winding body of the prepreg, and thereafter, the outermost layer of the lamination winding body is heated to be softened. state in the manner described above coloring material appropriately uniformly adhere the solid lubricant powder 3 or even higher hardness particles 4 was adhered to a required portion, pressurized by winding a tightening tape to the outer layer over a predetermined tension Press and fire. The firing temperature is usually about 120 ° C to 130 ° C,
The processing time is usually about 2 to 3 hours.

After heating and firing, the core metal is removed and the winding tape is removed and used as it is, or if necessary, the outer diameter of the obtained raw tube is polished by a belt sander with a grain size of # 800 to # 1200. It is used according to a conventional method to obtain a laminated tube.

[0038] may become rows as follows more specifically the coloring of the stacking tubes. That is, the coloring material is first uniformly adhered to the surface of the prepreg softened by heating and embedded, and then further heated, and solid lubricant powder such as fluorine solid lubricant powder and high hardness fine particles such as spherical alumina fine powder are uniformly adhered to the outer layer. You may let me .

It is also possible to deposit pigments or dyes on the surface of the prepreg first, and then deposit solid lubricating powder, high hardness fine particles or the like on top of them. When the laminated tube is partially colored, the organic pigment, the inorganic pigment, and the dye may be partially dispersed and adhered to the outermost layer surface of the laminated winding body of the prepreg. In addition, the shade of color can be adjusted by the adhesion amount of the pigment and the dye and the kneading ratio.

In this way, the outermost layer of the laminated winding body is attached.
Laminated tube colored by embedding by attaching coloring materials, blister could become nil generated, appearance beautiful color tone can be obtained and a laminated tube that is lightweight obtained easily and efficiently.

The number of laminated tubes may be two or more, and may be, for example, a three-layer structure depending on the use and purpose of the laminated tube.
It is also possible to have a four-layer structure or more. In addition, in the laminated pipe of this example, the solid lubricating powder 3 or the high hardness fine particles 4 and the coloring material were further contained all over the outer periphery of the outermost layer of the prepreg. In the above range, a coloring material may be contained together with the solid lubricating powder 3 or the high hardness fine particles 4 to form a shell, and a coating film may be formed in the masked portion by a normal process. Further, as a method of coloring, it is also possible to use two or more kinds of color pigments, dyes, metal powders, and diffuse reflection agents to partially divide the colors or partially overlap the colors.

[0042]

[0043]

Solid lubricant powder 3, high hardness fine particles 4 or
The coloring material 6 can also be formed as follows. The prepreg is cut into one outermost layer according to a pattern drawing , the cut prepreg is heated and softened, and solid lubricant powder 3, high hardness fine particles 4 or coloring material 6 are sequentially attached as necessary , After cooling, a prepreg to be an inner layer is wound around a cored bar, the above prepreg is wound over the cored bar, and a winding tape is further wound over the prepreg, which is heat-softened by a conventional method to obtain a laminated tube.

[0045]

Next, experimental examples will be shown to more specifically describe the laminated tube of the present invention. [Experimental Example 1] After applying a release agent and an adhesive to the core metal, high strength and high elasticity fiber
High-strength, high-elasticity fiber in which carbon fibers 5 are aligned in one direction as
A prepreg sheet (resin content 38% by volume) in which a fiber reinforcement was impregnated with an epoxy resin as a thermosetting synthetic resin was cut into a predetermined shape according to a pattern drawing.

The above prepreg sheet cut into a predetermined shape
One end of the was adhered to the core metal with an iron and was wound around the core metal while applying pressure to form a laminated winding body. In this state
The laminated winding body is heated to 30 to 40 ° C. to soften the resin on the surface, and on this surface, tetrafluoroethylene powder as the solid lubricating powder 3 (average particle diameter 35 μm, amorphous, specific gravity 2.1) is high. hardness
Spherical alumina fine particles as the fine particles 4 (average particle diameter 29 ±
3 μm, specific gravity 2.1) were kneaded at a weight ratio of 50:50, and after sufficiently adhering the powdered particles, a temperature of 80 was applied through release paper.
The outermost layer of the winding body
Embedded in the outer surface of the prepreg . Then, this laminated wound body was cooled to room temperature, and excess powder and granules were removed using a brush and collected.

Then, polyester tape (thickness: 25 μm)
m, width 15 mm) is wound around the outer periphery of the laminated winding body having powder particles embedded in the outer surface while applying a tension of 5 kg at intervals of 2 mm, and then heated at a temperature of 130 ° C. for 2 hours to prepare the prepreg.
The legs were cured to form a laminated tube .

Thereafter, the cored bar is removed and molded into a laminated tube.
Both ends were cut, and were unwound a polyester tape wound around the outer periphery. At this time, the polyester tape could be easily released and removed only by unwinding. A cross section of this laminated tube is schematically shown in FIG.

Regarding the laminated tube thus obtained,
The water resistance, boiling water resistance, abrasion resistance, water repellency, salt water resistance, weather resistance and surface hardness were evaluated.
The results are shown in Table 1.

[0051]

[Experimental Example 2] In Experimental Example 1, the powder particles to be embedded in the surface of the laminated wound body were spherical with tetrafluoroethylene powder (average particle diameter 35 μm, amorphous, specific gravity 2.1) and spherical. Alumina fine particles (average particle size 29
Although ± 3 μm and specific gravity 2.1) were kneaded at a weight ratio of 50:50, the powder and granules in Experimental Example 2 were solid
Silicone resin powder (average particle size 20 μm, true specific gravity 1.3, bulk specific gravity 0.30, amorphous) as lubricating powder and high hardness fine particles
Spherical alumina particles (average particle size 29 ± 3 [mu] m as,
A laminated tube was prepared in the same manner as in Experimental Example 1 except that the specific gravity 2.1) was changed to a powdery granule kneaded at a weight ratio of 22:80, and the water resistance and the like of the obtained laminated tube were evaluated. I did. The results are shown in Table 1. Experimental Example 3] outermost layer after the winding Te a granular material made of the same solid lubricating powder and high hardness particles and was used in the prepreg sheet cut into a predetermined shape before wrapping the core metal in the Experimental Example 1 A laminated tube was prepared in the same manner as in Experimental Example 1 except that a prepreg sheet pre-embedded in a portion corresponding to the outer surface of the above was wound around a core metal to prepare a laminated winding body. The sex was evaluated. The results are shown in Table 1. [Comparative Experimental Example 1] As in Experimental Examples 1 to 3, as a high-strength and high-elasticity fiber, a high-strength and high-elasticity fiber reinforcing material in which carbon fibers 5 are aligned in one direction is heated.
Laminated body pressure baking of prepreg sheet (resin content 38% by volume) impregnated with epoxy resin as curable synthetic resin
The laminated pipe (φ20 mm × 1000 mm) formed and molded was subjected to the following treatment to prepare a laminated pipe with a coating film.

That is, first, the outer surface of the laminated tube formed by using # 800 to # 1000 paper is ground to roughen the outer surface of the laminated tube , and is left on the outer surface.
The tape eyes of the winding tape were removed. At this time, the amount of resin removed by polishing was about 0.4 g.

Then, polishing was performed as described above.
To form a paint film having a thickness of about 40μm epoxy paint was applied in the same manner as the conventional to the outer surface of the laminated tube. The weight of the coating material applied at this time was about 3.2 g.

[0054] Then, the roughened eyes above paint film surface by performing polishing using paper # 800 to # 1000. The weight of the paint removed at this time was about 0.
It was 4 g.

Next, the coating polished as described above is applied.
A polyurethane coating was applied to the material film surface to form a coating film having a thickness of about 40 μm, and a laminated tube with a coating film was prepared. The weight of the coating material applied at this time was about 3.0 g.

In the laminated tube with a coating film thus obtained, the weight increase due to the coating film formation is (3.2 + 3.0)
-0.4-0.4) = 5.4g. [Experimental Example 4] Experimental Example 4 is the solid lubricating powder used in Experimental Example 1 above.
As a substitute for the tetrafluoroethylene powder as a powder and the spherical alumina microparticles as high hardness microparticles , a pre-colored ethylene tetrafluoride powder and a pre-colored spherical alumina microparticles were used. A colored laminated tube (φ20 mm × 1000 mm) of the present invention was prepared in the same manner as 1. In this colored laminated tube, the outermost layer is uniformly dispersed and pre-colored.
The total weight of the the ethylene tetrafluoride powder and spherical alumina fine particles was 2.3 g. [Comparative Experimental Example 2] Carbon fiber as high-strength and highly elastic fiber as in Experimental Example 1
High strength and high elasticity fiber reinforced material with 5 aligned in one direction
Using a prepreg sheet (resin content 38% by volume) impregnated with an epoxy resin as a chemical synthetic resin, according to a conventional method.
The outer surface of the laminated tube , which was made into a laminated wound body and was fired under pressure and then removed from the core metal, was polished by using # 600 paper, and then the above-mentioned Japanese Patent Laid-Open No. 3-10.
In analogy to the invention described in 631 JP to prepare a laminated tube having a paint film as the outermost layer by coating the fluorine-based paint on the outer surface. This laminated tube was evaluated for water resistance and the like in the same manner as in Experimental Example 1 above. The results are shown in Table 1. [Study of Results] As is clear from Table 1, the laminated pipe of the present invention (Experimental Examples 1 to 1)
3) is superior in abrasion resistance, water repellency, salt water resistance, weather resistance and surface hardness as compared with the conventional laminated tube (Comparative Experimental Example 2), and is confirmed to have good water resistance and boiling water resistance. Was done. The weather resistance of the laminated pipe of the present invention (Experimental Examples 1 to 3) is superior to that of the conventional laminated pipe (Comparative Experimental Example 2) because of the solid lubricating powder contained in the outermost layer. It is presumed that this is due to its excellent weather resistance and the fact that it does not allow ultraviolet rays to pass inside.

[0057] Further, as Comparative Example 1 the comparison result of Experimental Example 4 was obtained in Comparative Example 1 and paint film-laminated tube Experiment
Comparing the weight of the colored laminated tube of the present invention obtained in 4, coating the paint film with laminated tubes obtained in Comparative Example 1
The weight increase due to the formation of the material film was 5.4 g, whereas the pre-colored ethylene tetrafluoride powder and the pre-colored spherical particles in the colored laminated tube of the present invention obtained in Experimental Example 4 were used. since the weight increase of due to the use of alumina particles is 2.3g, the laminated tube of the present invention, as compared to the laminated tube with conventional paint film (5.4-2.3) =
It was confirmed that a weight reduction of 3.1 g was achieved.
From this, using the laminated tube of the present invention, for example, a length of 9.5 m
When forming a Ayusao, this Ayusao multilayer pipe with a conventional paint film
A light weight of about 17 g can be achieved as compared with an ayu rod of the same length using . In consideration of the fact that various attempts have been made in the past in order to achieve a weight reduction of about 3 to 5 g for an ayu rod, it is clear that the effect of the present invention is great.

[0058]

According to the invention described in claim 1 of the present patent application, according to the invention,
A prepreg obtained by impregnating a high-strength and high-elasticity fiber reinforced material with a thermosetting synthetic resin is wound around a core metal, and pressed and fired.
Since the solid lubricating powder is contained in the outer surface of the body so as to be exposed on the outer surface, a laminated tube having excellent lubricity and water repellency on the outer surface can be obtained. The outer surface of the laminated tube by the paint film
Since the solid lubricating powder is only exposed without being covered with the laminated pipe, it is possible to obtain a laminated tube having a beautiful finished surface in which blisters do not occur. Furthermore, the shape of the paint film on the outer surface of the laminated tube
It is possible to omit the time and energy for the coating film is dried together with may form a lightweight laminated tube to prevent increase in weight due to paint <br/> film it is possible to finish the surface without the formation .

[0059] In the invention of claim 2 of the present patent application, the outer surface of the prepreg fired body forming the laminated tube
High hardness particles so as to be exposed on the outer surface since the structure contained in the can since the hard multilayer tube attached high scratch surface hardness. In the invention of claim 3 of the present Application, the outside of the prepreg fired body forming the laminated tube
A solid lubricating powder and high hardness particles so as to expose to the outer surface on the surface has a configuration which is contained, lubricity, may for a laminated tube both excellent in surface hardness.

[0060]

[Brief description of drawings]

FIG. 1 is an explanatory view schematically showing a cross section of a fishing rod body that is a first embodiment of a laminated pipe of the present invention.

FIG. 2 is an explanatory view schematically showing a cross section of a fishing rod main body which is a second embodiment of the laminated pipe of the present invention.

FIG. 3 is an explanatory view schematically showing a cross section of a fishing rod main body which is a third embodiment of the laminated pipe of the present invention.

FIG. 4 is an explanatory view schematically showing another cross section of the third embodiment shown in FIG.

FIG. 5 is an explanatory view schematically showing a cross section of a fishing rod body which is a fourth embodiment of the laminated pipe of the present invention.

FIG. 6 is an explanatory view schematically showing a cross section of a fishing rod body which is a fifth embodiment of the laminated pipe of the present invention.

FIG. 7 is an explanatory view schematically showing a cross section of a fishing rod main body which is a sixth embodiment of the laminated pipe of the present invention.

[Explanation of symbols]

1 ... Outermost layer 3 ... Solid lubricating powder 4 ... High hardness fine particles 6 ... Coloring material

[Sequence list]

[Table 1]

Claims (3)

(57) [Claims] 1. A prepreg obtained by impregnating a high-strength and high-elasticity fiber reinforced material with a thermosetting synthetic resin is wound around a core bar, and pressed.
In a laminated tube formed by firing , a process for forming the laminated tube
A laminated pipe characterized in that a solid lubricating powder is contained on the outer surface of the prepreg fired body so as to be exposed on the outer surface . 2. A prepreg made by impregnating a high-strength and high-elasticity fiber reinforced material with a thermosetting synthetic resin is wound around a core bar and pressed.
In a laminated tube formed by firing , a process for forming the laminated tube
A laminated tube, characterized in that fine particles of high hardness are contained on the outer surface of the prepreg fired body so as to be exposed on the outer surface . 3. A prepreg made by impregnating a high-strength and high-elasticity fiber reinforced material with a thermosetting synthetic resin is wound around a core bar and pressed.
In a laminated tube formed by firing , a process for forming the laminated tube
A laminated pipe characterized in that an outer surface of a prepreg fired body contains solid lubricating powder and high hardness fine particles so as to be exposed on the outer surface .