JPS63430Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to a laminated pipe for fishing rods and the like made of a combination of organic/inorganic fibers and thermosetting resin. Conventional laminated pipes of this type use a large amount of resin in order to improve workability and surface finish. In other words, in terms of weight ratio, resin 30-34wt% (weight%) When converted to volume ratio, (in the case of glass fiber) Resin 46.74-51.34VOL% (volume%) Fiber 48.66-53.26VOL% (volume%) It is. However, as is clear from Tables 1 and 2, the bending strength and elasticity of laminated pipes generally increase or decrease in proportion to the increase or decrease in the volume percentage of fibers, so in conventional laminated pipes, fibers are used to improve physical properties. It is necessary to increase the amount, which has disadvantages such as not only high weight but also high price. Therefore, as a result of studies in view of the above-mentioned conventional circumstances, the present invention was developed by using glass or carbon nonwoven fabrics treated for each resin as the inner layer of a laminated tube made of a combination of organic/inorganic fibers and thermosetting resin. The purpose is to provide a laminated tube that is lightweight and has high physical properties. To explain this in detail based on the illustrated example, the first
In the figure, a laminated tube 1 is formed from an outer layer 2 and an inner layer 3. The outer layer 2 is a layer impregnated with a thermosetting resin such as a phenolic resin, a polyester resin, or an epoxy resin, and wrapped with cloth and aligned prepreg 4 made of organic and inorganic fibers such as glass fiber, carbon fiber, and aromatic polyamide fiber. It will become. The inner layer 3 is formed by wrapping and layering a nonwoven fabric treated for each of the resins, that is, a glass or carbon nonwoven fabric 5 that is not impregnated with resin. The fabric is cut into a size that is superimposed on the cloth and aligned prepreg 4, and is attached to a loosely conical core metal 6 and wound around the core metal 6. In this way, the core metal 6
When wrapping the core bar 6 on the surface, first clean the surface of the core bar 6 with a solvent such as acetone, then apply a silicone-based or other mold release agent uniformly, and then spray or spray a phenol-based or other adhesive on top of it. It is applied uniformly by dipping, etc., and then wound as described above with the nonwoven fabric 5 inside, and is wound around the core metal 6 by applying a pressure of, for example, 300 to 1000 kg. Next, to prevent the resin from blowing out and to make the outer diameter uniform, cellophane tape or polyester tape was wrapped around it, and then it was heated at 120°C to 150°C and baked for, for example, 60 minutes to 5 hours to harden it. Thereafter, the core bar 6 and the tape wound around the outer periphery are removed, and the laminated tube 1 is obtained through a polishing and painting process. FIG. 3 shows a modification of the laminated pipe 1 in which the above-mentioned inner layer 3 is layered between the outer layer 2 made of the same material as the above-mentioned outer layer 2 and the inner layer 7. It is also possible to achieve the same objectives and effects as the above-mentioned laminated pipe. Currently, we have a conventional laminated tube made by wrapping 4 plies of glass cloth impregnated with a 0.15 mm thick polyester resin around a 4φ core metal, and a glass cloth with a 4φ core metal impregnated with a 0.15 mm thick polyester resin. Table 3 shows the test results of comparing the physical properties with the laminated tube of the present invention, which was formed by wrapping 3 plies of glass nonwoven fabric and forming the inner layer with 3 plies of glass nonwoven fabric of 30 g/m ² .

[Table] From Table 3 above, the laminated pipe of the present invention using nonwoven fabric is approximately 8% lighter in weight compared to the conventional laminated pipe.
The elastic modulus shows 5.44% greater physical properties. Furthermore, as shown by the coefficient E/W, when comparing the values obtained by removing the elastic modulus by weight, it is clear that the laminated tube of the present invention has an elastic modulus improved by 14.52% per unit weight. As explained above, according to the laminated pipe according to the present invention, the resin impregnated into the glass fibers, carbon fibers, aromatic polyamide fibers, etc. of the outer layer 2 is
By being infiltrated with the nonwoven fabric, the resin content of the outer layer 2 is reduced, and as it approaches the outer periphery, a laminated tube with greater strength and elasticity and lighter weight than the conventional example is obtained.
In addition, the nonwoven fabric is inexpensive, and by forming the inner layer 3 with the nonwoven fabric, the amount of expensive fiber material forming the outer layer 2 can be reduced, which has practical effects such as cost reduction.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a laminated pipe for a fishing rod or the like according to the present invention, Fig. 2 is a front view showing how the laminated pipe forming material is wound around the core metal in the same laminated pipe, and Fig. 3 is a cross-sectional view of the same laminated pipe. It is a cross-sectional view showing a modification. 1...Laminated pipe, 2...Outer layer, 3...Inner layer, 4
... Resin-impregnated glass fiber carbon fiber cloth and aligned prepreg, 5... Glass or carbon nonwoven fabric.

Claims (1)

[Scope of utility model registration request] Phenol resin, organic and inorganic fibers such as glass fiber, carbon fiber, and aromatic polyamide fiber.
In a laminated tube such as a fishing rod, which is formed by wrapping a cloth impregnated with a thermosetting resin such as a polyester resin or an epoxy resin, and a aligned prepreg, a glass or carbon nonwoven fabric treated for each resin is added to the laminated tube. A laminated pipe for fishing rods, etc., characterized in that the inner layer of the pipe is made of rolled layers.