JPH078594A - Shaft for ski stick - Google Patents

Abstract

PURPOSE:To easily provide a ski stick with a beautiful appearance without conducting a work such as coating by forming a composite layer obtained by laminating a transparent fiber reinforced composite resin material layer on an ornament layer having a pattern having a shielding force to color laminated on a resin layer on the most outside layer of a plurality of fiber reinforced composite resin material layers. CONSTITUTION:A shaft for a ski stick is manufactured by arranging a composite prepreg 1 for imparting a beautiful appearance on the most outside layer of a fiber reinforced composite resin layer 101S1 in which carbon reinforced fibers are arranged parallel to the axial line of the shaft; fiber reinforced composite resin layers 101A1, 101A2 in which reinforced fibers are inclined only by an angle theta in mutually opposite directions to the axial line of the shaft and arranged; and a fiber reinforced composite resin layer 101S2 in which reinforced fibers are arranged parallel to the axial line of the shaft, and hardening it. The composite prepreg 1 is formed of a transparent fiber reinforced resin layer 4 laminated on an ornamental layer 3 laminated on a resin layer 2, and the ornamental layer 3 has a pattern 7 formed on the opposite surface to the resin layer 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ski pole shaft comprising a plurality of fiber-reinforced composite resin material layers,
In particular, the present invention relates to a ski pole shaft having an excellent appearance by laminating a composite layer in which a decorative layer is composited on the outermost layer of a plurality of fiber-reinforced composite resin material layers.

[0002]

2. Description of the Related Art In recent years, many ski shafts made of fiber-reinforced composite resin material, for example, are made of carbon fiber or glass fiber as reinforcing fiber because they are lightweight and have high mechanical strength. It has been used and has achieved good results.

Such a ski pole shaft is
As shown in FIG. 7, the mandrel 100 is made up of a predetermined number of fiber reinforced prepregs 101, which are cut into a predetermined shape and dimension, as shown in FIG.
It is formed by winding the prepreg 101 on the prepreg 101 and curing the matrix resin of the prepreg 101 to make the prepreg 101 a fiber-reinforced composite resin material. At this time, in order to improve the twisting and bending performance, the fiber reinforced prepreg should be prepared as shown in FIG.
As is well understood by also referring to, the reinforcing fiber is parallel (θ = 0 °) to the axis of the ski pole shaft.
Prepreg 101S ₁ (straight layer 10
1S ₁ ′) and the reinforcing fibers in opposite directions to the axis of the ski pole shaft (θ) (typically θ = 2).
5 ° to 90 °) only arranged to tilt prepreg _{101A (101A 1, 101A 2)} ( Angle layer 1
01A ′), and further, prepreg 101S ₂ (straight layer 101S ₂ ′) in which reinforcing fibers are arranged parallel (θ = 0 °) to the axis of the ski pole shaft are used, and basically, As shown in FIG. 5, the prepreg 10 is formed on the inner and outer layers of the ski pole shaft.
1S ₁ , 101S ₂ (straight layers 101S ₁ , 101
In S ₂ ′), the prepreg 101A (angle layer 101A ′) is often used as the intermediate layer. In some cases, the prepreg 101A (angle layer 101A ') may be omitted.

As shown in FIG. 6, the ski pole shaft is manufactured in a cylindrical shape with a uniform cross-sectional shape (FIG. 6 (A)) and in a tapered shape so as to become gradually thinner. In some cases (FIG. 6B).

[0005]

By the way, it is important for a ski pole shaft to have a good appearance, but conventionally, a prepreg is wound around a mandrel of a mold.
After laminating and curing to obtain a molded product, the surface is polished and then painted to give an aesthetic appearance, and thus there is a problem that it takes time and effort to give the aesthetic appearance. In addition, there is a problem that the decorative surface such as the coating on the outer surface lacks hardness, and peeling or abrasion of the coating on the decorative surface occurs as the molded product is used, and the aesthetic appearance is impaired.

An object of the present invention is to provide a fiber which can be easily provided with a beautiful appearance and which can be stably exhibited for a long period of time without performing a laborious work such as painting. It is intended to provide a ski pole shaft made of a reinforced composite resin material.

[0007]

The above object is achieved by a ski pole shaft according to the present invention. In summary, the present invention relates to a ski pole shaft comprising a plurality of fiber-reinforced composite resin material layers, wherein a resin layer and a surface of the concealable base material laminated on the resin layer are provided on the surface opposite to the resin layer. At least one composite layer comprising a decorative layer having a pattern and a transparent fiber-reinforced composite resin material layer laminated on the decorative layer is laminated on the outermost layer of the plurality of fiber-reinforced composite resin material layers. It is a ski ski shaft.

Preferably, the base material of the decorative layer is titanium paper, and the pattern is formed on the titanium paper by gravure printing. A transparent resin layer may be further laminated between the decorative layer and the transparent fiber reinforced composite resin material layer.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a ski pole shaft according to the present invention will be described in more detail with reference to the drawings.

FIG. 1 is a sectional view showing an embodiment of a ski pole shaft according to the present invention. The ski stock shaft of the present invention basically comprises a fiber reinforced composite resin layer 101S _{1 in} which carbon reinforcing fibers are arranged in parallel (θ = 0 °) to the axis of the ski stock shaft, and the reinforcing fibers are skis. A fiber-reinforced composite resin layer 101A ₁ arranged so as to be inclined at an angle (θ) (usually θ = 25 ° to 90 °, preferably 30 to 60 °) in opposite directions with respect to the axis of the stock shaft. , 101A ₂ and the reinforcing fibers are parallel to the axis of the ski pole shaft (θ = 0 °)
A fiber-reinforced composite resin layer 101S ₂ which are arranged in, on the outermost layer of the fiber-reinforced composite resin layer 101S _2, the composite prepreg 1 for imparting aesthetic is arranged, it is produced by curing.

That is, according to the present invention, the straight layer 1
01S ₁ ′, angle layer 101 A ′ straight layer 101
A ski pole shaft with S ₂ 'and composite layer 1'is formed. These straight layers 101S ₁ ′, 1
The 01S ₂ ′, the angle layer 101A ′, and the fiber-reinforced prepreg layer 1 ′ do not have to be one layer, and may be a plurality of layers if necessary. In some cases,
A reinforcing layer (not shown) may be added to the ski stock shaft in order to compensate for insufficient strength at the front and rear ends of the shaft.

Although the angle layer 101A 'is provided in FIG. 1, the angle layer 101A' can be omitted.

Straight layers 101S ₁ ′, 101S ₂ ′
And the fiber-reinforced composite resin layers 101S ₁ , 101S ₂ and 101A (101
A normal carbon fiber reinforced prepreg can be used for A ₁ , 101A ₂ ). That is, the carbon fiber reinforced prepregs 101S ₁ , 101S ₂ , and 101A use carbon fibers (including graphite fibers) as reinforcing fibers, and epoxy resin, unsaturated polyester resin, polyurethane resin, diallyl phthalate as matrix resin. Resin,
Thermosetting matrix resins such as phenolic resins can be used. Further, a curing agent and other imparting agents such as a flexibility imparting agent are appropriately added so that the curing temperature is 50 to 200 ° C.

Of course, the straight layers 101S ₁ ′, 101
S ₂ 'and the angle layer 101A' are as reinforcing fibers,
Using other fibers such as glass fiber other than carbon fiber,
It is also possible to form using various prepregs known to those skilled in the art.

Next, the composite layer 1'characteristic of the present invention will be described in detail. FIG. 2 shows a composite layer 1'according to the present invention.
It is a composite prepreg 1 used for forming a.

The composite prepreg 1 according to the present invention comprises a resin layer 2, a decorative layer 3 laminated on the resin layer 2, a transparent fiber reinforced resin layer laminated on the decorative layer 3, that is, a transparent prepreg layer 4. It is basically from. The entire composite prepreg 1 is supported on a release paper 5 having a lowermost resin layer 2 laminated thereon, and if necessary, a cover film 6 is covered on the uppermost transparent prepreg layer 4.

The resin layer 2 is for obtaining adhesiveness between the composite prepreg 1 and the outermost layer of the normal prepreg layer on which the composite prepreg 1 is laminated, and is usually used for prepreg such as thermosetting epoxy resin. The matrix resin of can be used. The resin layer 2 is usually transparent, but need not be transparent. The basis weight of the resin layer 2 on the release paper 5 is 5 to 2
00 g / m ² , preferably a basis weight of 10 to 100 g
/ M ² is formed.

The decorative layer 3 is for imparting a beautiful appearance to the ski pole shaft, and is the resin layer 2 of the base material 9.
The pattern 7 is formed on the opposite surface, that is, on the upper surface in the figure.

The design 7 is provided on the base material 9 by printing. Examples of the design 7 include a picture, a pattern, a logo mark and the like. Further, the pattern 7 may be simply colored on the surface of the decorative layer 3, and the coloring may be partial coloring for partially coloring the surface of the decorative layer 3 or full coloring for coloring the entire surface. it can. The design 7 may be formed in a single color or a plurality of colors.

As the base material 9, paper having a concealing power for the color of the base or an opaque resin sheet is used. This is because when a normal prepreg located under the laminated composite prepreg 1 exhibits a dark color such as black (in the case of a carbon fiber prepreg, it is black), the decorative layer 3 thereon.
This is because the pattern 7 of is difficult to appear, so that it is avoided.

The base material 9 is preferably one in which the resin from the resin layer 2 is homogeneously impregnated in order to increase the integrity with the resin layer 2. Similarly, the sheet preferably has a high compatibility with the resin of the resin layer 2.

As the base material 9, titanium paper can be preferably used. This titanium paper has titanium white (TiO ₂ ) incorporated into the fibers of the paper, and because the titanium white pigment is highly concealing, the decorative layer 3 can provide decorative properties regardless of the underlying color. Since the heat resistance is good, the thermal stability of the decoration layer 3 can be ensured, and the resin impregnation property is high. Therefore, the advantage of being able to enhance the integrity of the decoration layer 3 with the resin layer 2 and to make the decoration layer 3 firm is Besides, gravure printing is possible.

The fact that this gravure printing is possible is a great advantage of titanium paper. By using titanium paper for the base material 9, the degree of freedom in color and design of the design 7 is increased, and the design 7 with excellent decorativeness is obtained by the gravure printing. Can be beautifully set up.

The ink used for the design 7 is preferably one that does not deteriorate and deteriorate due to heat during curing of the prepreg for obtaining the ski pole shaft. For the purpose of preventing an adverse effect on the design 7 due to the resin that has penetrated into the decorative layer 3 from the resin layer 2 below, as shown in FIG. 7a. According to this, it is possible to prevent the pattern 7 from being melted by the infiltrated resin and becoming muddy or peeled off, and the stability of the pattern 7 is further improved.

The thickness of the decorative layer 3 is 5 to 300 μm,
It is preferably about 10 to 150 μm.

The prepreg layer 4 is for protecting the decoration layer 3 thereunder, and is transparent so that the pattern 7 of the decoration layer 3 can be seen from above the prepreg layer 4.
As such a transparent prepreg layer 4, a transparent prepreg made of reinforcing fibers made of transparent fibers and a matrix resin is used.

As the transparent fiber, for example, glass fiber, alumina fiber, quartz fiber or the like is used. These transparent fibers may be used alone or in combination of two or more kinds. Further, the transparent fibers can be used not only in the form of unidirectional arrangement but also in the form of cloth or mat. When the transparent fibers are in the form of a cloth or mat, a plurality of the cloths or mats may be laminated and used so that the fibers overlap in the same direction.
It is also possible to hybridize the fibers so that the fibers are inclined and overlap each other.

The matrix resin can be used in principle as long as it is a usual thermosetting resin such as an epoxy resin, but the resin lacking transparency is excluded because it gives the prepreg layer 4 transparency.

The thickness of the transparent prepreg layer 4 is 10 to 200.
μm, preferably 50 to 100 μm. The amount of transparent fibers in the transparent prepreg layer 4 is 30 to 200 g / m.
² , preferably 70 to 120 g / m ² . The amount of matrix resin in the prepreg layer 4 is 20 to 80 wt%, preferably 30 to 79 wt%.

The total thickness of the composite prepreg 1 is 50 to 5
It is suitable to set it to 00 μm. If the thickness of the composite prepreg 1 is less than 50 μm, the composite prepreg 1 is too thin to make the prepreg 1 difficult to manufacture, and it is not practical to use it as the outermost layer to prepare a ski pole shaft. On the other hand, if the thickness exceeds 500 μm, it is too thick, and it becomes difficult to use it for the outermost layer to form a ski stock shaft with good moldability.

The composite prepreg 1 of the present invention can be manufactured by any method, but typically, on a resin-coated paper coated with a resin, the resin layer and the pattern 7 are on opposite sides. The base material 9 having a concealing power against the color on which the pattern 7 is printed is overlapped,
A transparent prepreg is overlaid thereon, and heat pressing is performed from the outside of the support of the transparent prepreg and the resin-coated paper to integrate the resin on the resin-coated paper, the base material 9 on which the pattern 7 is printed, and the transparent prepreg. By doing so, it can be manufactured.

In some cases, it is possible to use a manufacturing method in which a resin-coated paper is laminated on transparent fibers and hot pressed to obtain a transparent prepreg. That is, a base material 9 on which a pattern 7 is printed is superposed on a resin-coated paper, transparent fibers are arranged on the base paper 9, and a resin-coated paper for transparent prepreg is superposed on the fibers, and the upper and lower resin-coated papers are coated. By heat pressing from the outside of the paper, the transparent prepreg layer 4 is formed from the resin on the resin-coated paper and the transparent fiber, the base material 9 on which the design 7 is printed, and the resin on the resin-coated paper below. And the transparent prepreg layer 4 at the same time.
It can be manufactured by integrating and the composite layer 1.

Such a composite prepreg 1 is used as the outermost layer.
According to the ski stock shaft manufactured by winding two layers, not only is it lightweight and has good mechanical strength, but also the base of the decorative layer 3 of the composite prepreg 1 laminated in a single layer to a plurality of outermost layers. The material 9 hides the color of the fiber reinforced resin composite material layer by the ordinary prepreg located below, and the pattern 7 of the decoration layer 3 passes through the thin transparent layer of the fiber reinforced composite resin material by the transparent prepreg layer 4 on the surface thereof. See through,
Since the pattern 7 appears to be located deep inside the thin transparent layer, the appearance of the ski stock shaft is improved, and the appearance is easily imparted.

In particular, when the base material 9 of the decorative layer 3 is made of titanium paper, a beautiful design 7 can be provided by gravure printing, so that the appearance of the ski pole shaft can be made even more beautiful.

Further, by providing the underlayer 7a made of ink for preventing resin permeation under the design 7, the adverse effect of the resin that has penetrated into the decorative layer 3 can be eliminated, and the stability of the design 7a can be further increased. .

Furthermore, since the decorative layer 3 is extremely firmly protected by the fiber reinforced composite resin material layer formed by the transparent prepreg layer 4, the aesthetic appearance of the decorative layer 3 is different from that of conventional painting and the like. It will not be damaged as it is used, and will be stable over a long period of time. In addition, when manufacturing a ski pole shaft, by simply laminating one or two layers of the composite prepreg 1 on the outermost layer of a normal prepreg layer, it is possible to give the ski pole shaft a beautiful appearance. Unlike the above, there is no need for laborious work for imparting a beautiful appearance.

FIG. 4 is a sectional view showing another embodiment of the composite prepreg used in the present invention. The present composite prepreg 1 is characterized in that a transparent resin layer 8 is further laminated between the decorative layer 3 and the transparent prepreg layer 4.

The transparent resin layer 8 is for ensuring the adhesiveness between the transparent prepreg layer 4 and the decorative layer 3 obtained by printing the design 7 on the base material 9 made of paper or sheet. Resins similar to those used for the layers can be used. The transparent resin layer 8 has a basis weight of 10 to 200 g / m ² , and preferably a basis weight of 20 to 100 g / m ² .

According to the ski stock shaft produced by using the composite prepreg 1 and laminating one or two layers on the outermost layer such as the ordinary laminated carbon fiber prepreg, the decorative layer 3 and the transparent prepreg are used. The adhesion between layer 4
Since the transparent resin layer 8 is provided more securely in the meantime, the decorative layer 3 is on the outer surface of the ski pole shaft, so that the aesthetic appearance can be more stably exhibited.

In this composite prepreg 1 as well, it is needless to say that a base layer made of ink for preventing resin permeation may be provided under the pattern 7.

The present invention will be further described based on specific examples.

Example 1 A composite prepreg 1 was prepared according to the present invention and used in combination with an ordinary prepreg to manufacture a ski pole shaft. The manufacturing method is as follows.

As shown in FIG. 7, a straight layer 101 is formed on a mandrel 100 of a ski stock shaft type.
As the carbon fiber prepreg 101S ₁ for S ₁ ′, a PAN-based carbon fiber prepreg having a thickness of 120 μm and a resin amount of 32% (PAN-based carbon fiber: manufactured by Toray Industries, Inc., trade name T-3
00) is wound around 8 layers, and the angle layer 101A '
As a glass fiber prepreg 101A for use with a thickness of 130
A total of two layers of E glass having a thickness of 35 μm and a resin amount of 35% were wound at + 30 ° and −30 °, and a straight layer 101S ₂ ′ was wound on the layer.
Same as above for carbon fiber prepreg 101S ₂ for
Wrap 8 layers of AN carbon fiber prepreg T-300,
Further, two layers of the composite prepreg 1 of the present invention were wound around the outermost layer for the second straight layer 1 '. Then, a tape for a ski pole was prepared by taping with a polypropylene stretched tape and heat-curing, and then performing predetermined finishing such as polishing.

The composite prepreg 1 used is one in which the transparent prepreg layer 4 is directly laminated on the decorative layer 3 shown in FIG. The resin layer 2 of the composite prepreg 1 was formed of an epoxy resin with a basis weight of 50 g / m ² . The decorative layer 3 includes
Gravure printing on 60 μm thick titanium paper for blue, red,
A printing paper provided with a pattern using complicated colors such as a primary color, an intermediate color between them, and a gradation with yellow and black inks was used. For the transparent prepreg layer 4, a unidirectional glass fiber prepreg using an epoxy resin is used, the thickness of the glass fiber is 80 μm, and the amount of the glass fiber is 100 g / m.
^2. The amount of epoxy resin was 35% by weight.

As a result, in the ski ski shaft thus obtained, the background color of the ordinary prepreg is hidden, and the design with complicated colors is located behind the thin transparent layer on the surface, and is transparent through the transparent layer. Since it is visible, it has a beautiful appearance and is remarkably rich in aesthetic fashion. Moreover, the aesthetic appearance was not easily lost even after long-term use.

Example 2 The same procedure as in Example 1 was carried out except that a transparent resin layer 8 was laminated between the decorative layer 3 and the transparent prepreg layer 4 shown in FIG. 4 as the composite prepreg 1. Created a shaft for ski poles. The transparent resin layer 8 was an epoxy resin and had a basis weight of 50 g / m ² .

Similarly, the obtained ski pole shaft has a complex color pattern that can be seen through the thin transparent layer on the surface of the ski pole shaft, which has a high appearance and is aesthetically fashionable. It became remarkably rich. Moreover, the aesthetic appearance was not easily lost even after long-term use.

Example 3 Titanium paper having a thickness of 30 μm was used as the base material of the decorative layer 3, and a base layer was printed with a resin permeation preventive ink below the pattern before printing a pattern with complicated colors. In the same manner as in Example 1, a ski pole shaft was manufactured.

As a result, the ski pole shaft is
A more aesthetically pleasing appearance was created because the intricately colored pattern appears to float in the thin transparent layer on the surface of the ski pole shaft. Moreover, the design had no adverse effects such as turbidity due to the resin.

[0050]

As described above, according to the present invention, the ski stock shaft made of the fiber-reinforced composite resin material is opposite to the resin layer and the resin layer of the base material laminated thereon, which has a hiding power for color. A decorative layer having a pattern on the side surface, and a composite layer composed of a transparent fiber reinforced composite resin material layer laminated on the decoration layer is laminated on the outermost layer of a plurality of fiber reinforced composite resin material layers. Since it is formed, it is possible to easily obtain a beautiful appearance of the ski pole shaft without performing a laborious painting work and the like, and the beautiful appearance can be stably exhibited over a long period of time.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a ski pole shaft of the present invention.

FIG. 2 is a cross-sectional view showing a composite prepreg used in the present invention.

FIG. 3 is a cross-sectional view showing that a base layer is provided below the design of the decorative layer of the composite prepreg of FIG.

FIG. 4 is a cross-sectional view showing another embodiment of the composite prepreg used in the present invention.

FIG. 5 is a cross-sectional view showing a conventional ski pole shaft.

FIG. 6 is a perspective view showing an example of a ski pole shaft.

FIG. 7 is an explanatory view showing a method of manufacturing a ski pole shaft.

[Explanation of symbols]

1 composite prepreg 1 'composite layer 2 resin layer 3 the decorative layer 4 transparent prepreg layer 7 pattern 7a underlayer 8 transparent resin layer 9 Substrate 101S _1' straight layer 101S ₂ 'Straight layer 101A' Angle layer

Claims (1)

[Claims] 1. A ski stock shaft comprising a plurality of fiber-reinforced composite resin material layers, wherein a resin layer and a pattern on a surface of the concealing base material laminated on the resin layer, which is opposite to the resin layer, have a design. A ski characterized in that at least one composite layer including the decorative layer and the transparent fiber-reinforced composite resin material layer laminated on the decoration layer is laminated on the outermost layer of the plurality of fiber-reinforced composite resin material layers. Shaft for stock.