JP2007089478A - Tubular body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tubular body having light weight, prevented from unevenness and lack of decoration and having excellent decorativeness. <P>SOLUTION: The tubular body is obtained as follows. A body 12 of the tubular body is formed by winding a fiber-reinforced prepreg obtained by impregnating a reinforcing fiber 20 with a synthetic resin 22, and embedding decoration particles 30 in the outer surface-side resin of the fiber-reinforced prepreg arranged at the outermost side of the body 12. The average thickness L of the resin layer 22a at the outer surface side of the fiber-reinforced prepreg at the outermost side is formed so as to be smaller than the average diameter D of the reinforcing fiber 20 of the fiber-reinforced prepreg at the outermost side, and the average thickness t of the decoration particles 30 is regulated so as to be equal to or smaller than the average thickness L of the resin layer 22a of the outer surface side. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a tubular body, and more particularly to a tubular body formed by winding a fiber-reinforced prepreg in which a reinforcing fiber is impregnated with a synthetic resin.

  In the cocoon formed by winding the fiber reinforced prepreg, a coating is applied in advance to a portion corresponding to the outer peripheral surface of the cocoon of the prepreg that forms the outermost layer, and the prepreg that forms the pre-painted outermost layer is applied. It is known that a wound tape is wound and fired to form a bag material (for example, see Patent Document 1). The paint to be applied in advance has a layered structure pigment mixed in a transparent resin, and is oriented so as to perform regular multiple reflection in a certain direction within the transparent resin.

Further, a tubular material is formed by winding a fiber reinforced prepreg to form a tube material, disposing decorative particles on the surface portion of the fiber reinforced resin layer located in the outermost layer of the tube material, and then binding and heating the molding tape. A body has also been developed (see Patent Document 2).
Japanese Patent No. 3178626 JP 2004-229610 A

However, among the prepregs that form the outermost layer, in the case where the paint is applied in advance to the portion corresponding to the outer peripheral surface of the bag, the paint weight is increased because the paint is applied to the surface of the uncured prepreg, Furthermore, since the coating material and the prepreg are wound on the mandrel in a state where the adhesiveness is not lost, workability is poor.
Further, when the decorative particles are disposed on the surface portion of the fiber reinforced resin layer located in the outermost layer of the tube material, if the decorative particles are not sufficiently fixed on the surface portion of the fiber reinforced resin layer, the decorative particles are There is a possibility that the decorative particles move when falling off or when the molding tape is bound, and unevenness or chipping may occur in appearance.

  The present invention has been made based on such circumstances, and it is an object of the present invention to provide a tubular body that is light in weight, prevents uneven decoration and chipping, and has excellent decorative properties.

  The tubular body of the present invention that achieves the above object is formed by winding a fiber reinforced prepreg in which a reinforcing fiber is impregnated with a synthetic resin to form a main body of the tubular body, and the outer surface of the fiber reinforced prepreg disposed on the outermost side of the main body. It is a tubular body formed by embedding decorative particles in the side resin, and the average thickness L of the outer surface side resin of the outermost fiber-reinforced prepreg is determined from the average diameter D of the reinforcing fibers of the outermost fiber-reinforced prepreg. And the average thickness t of the decorative particles is formed to be equal to or less than the average thickness L of the outer surface side resin.

  According to the tubular body of the present invention, the decorative particles are securely held on the outer surface side resin of the fiber reinforced prepreg disposed on the outermost side of the main body and can be prevented from falling off, and the decorative particles are outside the fiber reinforced prepreg. Since the thickness on the surface side is held in a very thin resin, a tubular body that is extremely light and has a high decorative effect is formed.

1-4 show a tubular body 10 according to a preferred embodiment of the present invention.
As shown in FIG. 1, this tubular body 10 is formed for fishing rods, for example, and has a main body 12 having a hollow thin structure. The main body 12 is formed by winding a fiber reinforced prepreg (hereinafter simply referred to as a prepreg) in which a reinforcing fiber is impregnated with a synthetic resin around a metal core 8 shown in FIG. Such a prepreg preferably uses carbon fiber, glass fiber, or aramid fiber having a fiber diameter of about 5 to 7 μm as the reinforcing fiber. Examples of the resin impregnated in the reinforcing fiber include an epoxy resin, a polyester resin, and phenol. A thermosetting resin such as a resin is preferable, and a thermoplastic resin such as polyamide may be mixed.

  In this embodiment, the main body 12 is formed in a three-layer structure having an inner layer 14, an intermediate layer 16, and an outer layer 18 as shown in FIG. 3, and the inner layer 14 and the outer layer 18 surround the reinforcing fibers of the prepreg. The intermediate layer 16 is aligned in the axial length direction. FIG. 4 shows such reinforcing fibers 20 of the outer layer 18 and a resin 22 impregnated or mixed in these reinforcing fibers 20. Regarding the prepreg forming the outer layer 18, the weight reduction of the main body 12 is promoted by setting the resin impregnation amount of the outermost layer, that is, the prepreg forming the outer surface of the main body 12 to be in a range of 20 wt% to 38 wt%. Can do.

  The main body 12 is not limited to such a three-layer structure, and may be formed by winding a prepreg around an appropriate number of laminated structures, and a plurality of inner layers 14, intermediate layers 16, and outer layers 18 may be formed. The prepreg may be formed. Further, the direction in which the reinforcing fibers are aligned can also be formed by aligning in a deflection direction inclined at an appropriate angle with respect to the axial direction, and if prepregs can be suitably bonded, different prepregs of resins impregnated with each other can be used. It may be laminated. Furthermore, the present invention is not limited to the hollow structure as shown in the figure, and a solid structure that can be greatly bent can also be formed.

  As shown in FIG. 2, the main body 12 formed by laminating the prepregs as described above is wound with a fastening tape 24 around its outer periphery, and the fastening force of the fastening tape 24 causes the main body 12 to be placed on the core bar 8. Pressurize. In order to uniformly pressurize the entire outer peripheral surface of the main body 12 with a required pressure, the tightening tape 24 is spirally wound with a predetermined width, for example, at a pitch p of about 1.5 to 2 mm (FIG. 3). Is preferred. The fastening tape 24 wound spirally in this way is, for example, a polypropylene resin, a polyethylene terephthalate resin having a thickness of about 10 to 35 μm and a width of about 5 to 20 mm, or a combination of these resins. Preferably, it is formed in a two-layer or sandwich structure, and has a sufficient strength to pressurize the outer surface of the main body 12 with a required tightening force.

  3 and 4 show a state in which the main body 12 around which the tightening tape 24 is wound is baked at a required temperature for a predetermined time and cured, and then the tightening tape 24 is removed together with the cored bar 8. FIG. On the outer surface of the main body 12, a gentle inclined surface 26 formed by a flat inner surface of the tightening tape 24 and a step portion 28 formed by a side edge of the tightening tape 24 are formed. The step portion 28 is formed between the outer surface of the tightening tape 24 wound earlier and the inner surface of the tightening tape wound around the side edge portion, and spirals on the outer surface of the outer layer 18. Extend to.

As further enlarged in FIGS. 5 and 6, a resin layer 22 a on which the reinforcing fiber 20 is not disposed is formed on the surface side of the outer layer 18, and thin plate-like decorative particles 30 are embedded in the resin layer 22 a. It is.
Such decorative particles 30 can be embedded in various methods in the prepreg that forms the outer layer 18 of the main body 12, in particular, the outer surface side resin of the prepreg that forms the resin layer 22 a disposed on the outermost side. For example, it is possible to employ a method in which the decorative particles 30 are sprayed onto the outer surface side resin of the main body 12 by spraying or the like, and then the volatile components are removed to leave only the decorative particles 30. Thus, the main body 12 formed of the uncured prepreg with the decorative particles 30 attached to the surface is subjected to an external pressure such as pressing or winding a tape while rotating it on a fluorine material mat. 30 can be completely embedded in the resin layer 22a. When the main body 12 is pressed against the mat made of fluorine material, excess decoration particles 30 can be removed from the state in which the decoration particles 30 overlap each other. In addition, when external force is applied by winding the tape, excess decoration particles 30 can be removed from the main body 12 by removing the tape after embedding the decoration particles 30.

  In order to embed the decorative particles 30 in the resin layer 22a, an appropriate method can be adopted. Before the wound prepreg is finally heat-cured, the decorative layer 30 is decorated on the resin layer 22a while maintaining a highly viscous state of the prepreg. It is preferable to familiarize the particles 30. Thereby, the movement of the decorative particles 30 in the uncured resin layer 22a is suppressed, and the final heat curing process can be performed in this state.

  In any case, the average thickness L of the resin layer 22a formed of the surface side resin of the outermost fiber-reinforced prepreg is formed smaller than the average diameter D of the reinforcing fibers 20 of the outermost fiber-reinforced prepreg. The thickness t of the decorative particles 30 is formed to be equal to or less than the average thickness L of the resin layer 22a. Here, the average thickness L of the resin layer 22a is an average value of the distance between the reinforcing fiber 20 positioned on the outermost surface side after the main body 12 is cured and the outer surface of the resin layer 22a, and is a decorative particle. The average thickness t of 30 is an average value of the thicknesses of both end portions and the central portion along the direction in which the passing dimension of the decorative particles 30 is large. The resin layer 22a can have an average thickness L of 4 μm to 6 μm. Compared with the case where a normal paint is applied to the surface of the resin layer 22a, the resin layer 22a is extremely thin, and the decorative particles 30 are used to apply the paint. A decorative effect equivalent to that applied can be obtained. The average thickness t of the decorative particles 30 may be 0.05 μm to 1 μm. By forming the decorative particles 30 in such a range, the decorative particles 30 are formed on the outer surface side resin of the prepreg forming the resin layer 22a. It is easy to bite in and can have excellent adhesion to the resin layer 22a.

  As shown in FIG. 5, the outer surface of the resin layer 22a in which the decorative particles 30 are embedded is embedded in the interior together with the reinforcing fibers 20 without protruding the decorative particles 30, and a smooth curved inclined surface. 26 can be formed. In this case, even if the decorative particles 30 come into contact with the reinforcing fibers 20 and the adhesion is poor, it is possible to prevent the decorative particles 30 from falling off the resin layer 22a. The decoration particles 30 are covered with the resin of the resin layer 22a, and the resin that forms the resin layer 22a is interposed between the decoration particles 30 and the inclined surface 26, so that the decoration particles 30 are separated from the main body 12. In addition, it is difficult to fall off from the resin layer 22a and has excellent wear resistance, and fading or deterioration of the decorative particles 30 is suppressed, and the decorative effect can be maintained over a long period of time.

  Further, for example, when the average thickness t of the decorative particles 30 is substantially equal to the average thickness L of the resin layer 22a, as shown in FIG. 6, a part of the decorative particles 30 is exposed to the outside and the resin layer 22a A part of the inclined surface 26 may be formed. As described above, when a part of the decorative particle 30 is directly exposed to the outside, the original color and glitter of the decorative particle 30 appear as they are, and the decorative effect can be increased. In any case where the decorative particles 30 are completely embedded in the resin layer 22a and a part thereof is exposed on the outer surface, the outer surface of the resin layer 22a is smooth with the external pressure as described above. By being formed with a curved smooth surface, the tubular body 10 can be reduced in weight, and the color and brightness of the decorative particles 30 can be enhanced with almost no irregularities formed on the outer surface. .

  FIG. 7 shows the appearance of the tubular body 10 formed in this way. In the present embodiment, decorative particles 30 having various shapes are combined. By using such various kinds of decorative particles 30, the glittering glittering of the tubular body 10 by the decorative particles 30 is emphasized. And can produce a varied appearance. As shown in the drawing, the density of the decorative particles 30 is roughly formed at an appropriate portion such as a portion close to the stepped portion 28, or the density of the decorative particles 30 is partially changed over the entire outer surface of the tubular body 10, A difference in appearance on the pattern may be given.

  As shown in FIG. 8, such decorative particles 30 can be formed by covering a thin flaky metal or a core member 32 made of natural mineral such as mica with a coating layer 34. For the covering layer 34, resin, magnesium fluoride, titanium oxide, chromium oxide, ceramics, or the like can be used. The decorative particles 30 can be formed not only with particles having a brilliant color such as metal, but also with transparent particles. In the case of forming with transparent particles, a transparent metal thin film chip, a thin film resin chip having a multilayer structure of glass flakes, a hologram chip, or the like can be used. Furthermore, even if the decorative particles 30 are flaky particles obtained by vapor-depositing a metal on a resin, or glittering particles that emit interference light, the glittering appearance of the tubular body 12 can be emphasized. The outer shape of the decorative particles can be formed in an arbitrary shape. For example, the outer surface of the main body 12 is improved by concealing the outer surface of the main body 12 by using a foil shape having various shapes rather than a circular shape. be able to.

  In the tubular body 10 formed as described above, thin film-like or foil-like decorative particles 30 of various shapes are embedded in the resin layer 22a formed on the outer surface side by the prepreg of the main body 12, and the average thickness of the resin layer 22a By forming the thickness L smaller than the average diameter D of the reinforcing fibers 20 of the outermost fiber-reinforced prepreg, and forming the average thickness t of the decorative particles 30 to be equal to or less than the average thickness L of the resin layer 22a, The decorative particles 30 are securely held on the outer surface side resin 22 of the fiber reinforced prepreg disposed on the outermost side of the main body to prevent dropping, and the decorative particles 30 are thick on the outer surface side of the fiber reinforced prepreg. Is held in the extremely thin resin layer 22a, the tubular body 10 having a very light weight and a high decorative effect can be formed.

  The prepreg forming the outer layer 18 of the main body 12 may be translucent as well as transparent as long as the resin 22 makes the decorative particles 30 visible from the outside.

Schematic which shows the tubular body by preferable embodiment of this invention. Explanatory drawing which shows a part of process of manufacturing the tubular body of FIG. Sectional drawing which expanded a part of main body of the tubular body of FIG. Sectional drawing which expanded a part of outer layer which forms the main body of the tubular body of FIG. Schematic which shows the arrangement | positioning state of the decoration particle in the surface side of the outer layer of the tubular body of FIG. Schematic which shows the other arrangement | positioning state of the decoration particle | grains similar to FIG. Explanatory drawing which illustrates the external appearance by the decoration particle of the tubular body of FIG. The expanded sectional view which illustrates a decoration particle.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Tubular body, 12 ... Main body, 18 ... Outer layer, 20 ... Reinforcing fiber, 22 ... Resin, 22a ... Resin layer (surface side resin), 30 ... Decorative particle

Claims (8)

  A tubular body formed by winding a fiber reinforced prepreg impregnated with a synthetic resin into a reinforcing fiber to form a main body of a tubular body, and embedding decorative particles in the outer surface side resin of the fiber reinforced prepreg disposed on the outermost side of the main body The average thickness L of the outer surface side resin of the outermost fiber-reinforced prepreg is formed smaller than the average diameter D of the reinforcing fibers of the outermost fiber-reinforced prepreg, and the average thickness of the decorative particles A tubular body characterized in that the thickness t is less than or equal to the average thickness L of the outer surface side resin.   The tubular body according to claim 1, wherein the decorative particles are covered with the outer surface side resin.   The tubular body according to claim 1, wherein a part of the decorative particles is exposed to the outside from the outer surface side resin.   4. The tubular body according to claim 1, wherein an average thickness L of the outer surface side resin is in a range of 4 μm to 6 μm.   The tubular body according to any one of claims 1 to 4, wherein a thickness t of the decorative particles is in a range of 0.05 µm to 1 µm.   The tubular body according to any one of claims 1 to 5, wherein the outermost fiber-reinforced prepreg has a reinforcing fiber completely covered with an outer surface side resin.   The said main body is formed by winding a plurality of fiber reinforced prepregs, and the resin impregnation amount of the fiber reinforced prepregs wound on the outermost side is in the range of 20 wt% to 38 wt%. The tubular body according to any one of the above.   The tubular body according to any one of claims 1 to 7, wherein the main body has a smooth outer surface.

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