JPH0576628A - Golf club head - Google Patents

Abstract

PURPOSE:To provide a golf club head which is excellent in wear-resistance and mechanical strength such as compressive strength, impact strength and so on and further excellent in feeling during use and appearance. CONSTITUTION:A face molding 100 comprising one or plural number of pre-preg layers 1' formed by hardening pre-preg where metallic fiber sheets 3 are stacked is provided at least on a part or the whole of a face.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally to a golf club head, and more particularly to a prepreg layer in which metal fiber paper is laminated on at least a face, that is, a ball striking face. The present invention relates to a golf club head. More specifically, in the present invention, the prepreg layer is provided on at least one side of the metal fiber paper,
A fiber-reinforced composite resin layer impregnated with a matrix resin in a reinforcing fiber or a resin layer having no reinforcing fiber is arranged,
Particularly, it is formed of a prepreg having excellent wear resistance.

[0002]

2. Description of the Related Art As shown in FIG.
Irrespective of whether it is wood (FIG. 2 (A)) or iron (FIG. 2 (B)), the face of the golf club head 200 has high mechanical strength and wear resistance over a part or the entire surface thereof. For the reason of goodness, a face molded article 100 made of a resin plate or a fiber reinforced composite material using glass fiber or carbon fiber as a reinforcing fiber is provided by insert molding or integrally joined. May be

[0003]

However, the golf club head face formed of the above-mentioned resin plate or fiber reinforced composite material has a problem particularly in wear resistance, and improvement of wear resistance is desired. ing. Further, further improvement is desired in terms of feel and aesthetics (fashionability) during use.

Therefore, the object of the present invention is, in particular, excellent wear resistance, mechanical strength such as compressive strength and impact strength, and further excellent feel and aesthetics during use. To provide a club head.

[0005]

The above object is achieved by a golf club head according to the present invention. In summary, the present invention provides a prepreg layer in which a fiber-reinforced composite resin layer in which a matrix resin is impregnated in a reinforcing fiber or a resin layer having no reinforcing fiber is arranged on at least one side of a metal fiber paper, The golf club head is characterized in that at least a part or the whole of the face is provided with one layer or a plurality of layers. As the metal fiber paper, a metal fiber sheet produced by using fibers such as stainless steel, nickel, aluminum, brass and iron, preferably having a fiber diameter of 15 μm or less, is preferably used.

[0006]

Next, a golf club head according to the present invention will be described in more detail with reference to the drawings.

The present invention can be embodied on either a wood (FIG. 2A) or an iron (FIG. 2B), as shown in FIG. It is in the composition of the face. That is, according to the present invention, FIG.
As shown in FIG. 1, at least a part or the whole of the face, which will be described in detail later, is formed by curing a prepreg in which metal fiber paper is laminated, or one or a plurality of prepreg layers 1 are formed. Face molding made of '
0 is provided integrally.

The golf club head 200 itself can be made of wood, metal, and various other materials, as is well known to those skilled in the art. Therefore, the face molding 100 according to the present invention can be integrally molded by insert molding during molding of the golf club head 200, and by post-processing the golf club head 200, an adhesive or the like can be applied to the face. It can also be joined together.

Next, the face molding 100, which is a feature of the present invention, will be described in more detail.

FIG. 3 shows a face molding 1 according to the present invention.
Fiber reinforced prepreg 1, which is an example of a prepreg used to form No. 00 is shown. In the fiber-reinforced prepreg 1 in this embodiment, a metal fiber paper 3 is laminated on one side of a fiber-reinforced composite resin layer 4 in which a matrix resin 5 is impregnated in a reinforcing fiber 2. The total thickness (T) of the fiber reinforced prepreg 1 is generally 50 to 300 μm. The metal fiber paper 3 will be described in detail later.

The reinforcing fibers 2 are inorganic fibers such as carbon fibers, boron fibers, glass fibers, alumina fibers, silicon carbide fibers and silicon nitride fibers; aramid fibers, polyarylate fibers,
Organic fibers such as polyethylene fibers and polyester fibers;
Or, using one kind selected from metal fibers such as titanium fiber, amorphous fiber, stainless steel fiber, or
As shown in FIG. 4, a plurality of types can be used in the form of a hybrid composed of, for example, two types of reinforcing fibers 2 (2a, 2b). Further, the reinforcing fibers 2 can be arranged in one direction and arranged, or can be used in the state of cloth (woven cloth).

As the matrix resin 5, a thermosetting matrix resin such as epoxy resin, unsaturated polyester resin, polyurethane resin, diallyl phthalate resin or phenol resin can be used. Further, a curing agent and other imparting agents such as flexibility imparting agent are appropriately added so that the curing temperature is 50 to 200 ° C.

As a preferred example, an epoxy resin is preferable as the matrix resin, and usable epoxy resins include, for example, (1) glycidyl ether type epoxy resins (bisphenol A, F, S type epoxy resin, novolac type epoxy resin). Resin, brominated bisphenol A epoxy resin); (2) cycloaliphatic epoxy resin;
(3) Glycidyl ester-based epoxy resin; (4) Glycidylamine-based epoxy resin, tetraglycidyldiaminodiphenylmethane, triglycidyl-p-aminophenol, etc .; (5) Heterocyclic epoxy resin; and other various epoxy resins. One kind or a plurality of kinds are used, and bisphenol A, F, S glycidyl amine epoxy resin is particularly preferably used. As the curing agent, an amine-based curing agent such as dicyandiamide (DIC
Y), diaminodiphenylsulfone (DDS), diaminodiphenylmethane (DDM); acid anhydrides such as hexahydrophthalic anhydride (HHPA) and methylhexahydrophthalic anhydride (MHHPA) are used, but especially amine curing Agents are preferably used.

Further, the compounding ratio of the reinforcing fiber and the matrix resin in the fiber-reinforced composite resin layer 4 of the present invention can be arbitrarily adjusted as in the case of a normal prepreg. Therefore, according to the present invention, the thickness (T ₁ ) of the fiber-reinforced composite resin layer 4 will usually be about 30 to 200 μm.

The fiber-reinforced prepreg 1 having such a structure can be manufactured by any method. Generally, as the fiber-reinforced composite resin layer 4, first, the reinforced fiber 2 is impregnated with the matrix resin 5 to manufacture the prepreg. , Then the prepreg 4
It is preferable that the metal fiber paper 3 is attached to one side surface by pressing with a roller or the like, for example. Furthermore, if necessary, as shown in FIGS. 5 and 6, a resin layer 5 ′ may be provided with an appropriate thickness on the surface of the metal fiber paper 3 opposite to the prepreg 4 side. As the resin used for the resin layer 5 ′, the same resin as the matrix resin 5 of the fiber reinforced composite resin layer 4 can be used.

In the embodiment shown in FIGS. 3 and 4, the fiber-reinforced composite resin layer 4 is arranged only on one side of the metal fiber paper 3, but as shown in FIGS. The fiber-reinforced composite resin layer 4 may be disposed on both sides of the layer 3.

9 and 10 show another embodiment of the present invention. In this embodiment, the resin layer 5 ′ having no reinforcing fiber is formed on one side of the metal fiber paper 3 (FIG. 9) or on both sides of the metal fiber paper 3 (FIG. 10), and Shown are prepregs 1 arranged with a similar thickness (T ₁ ).

The resin used for the resin layer 5'in this embodiment can be the same as the matrix resin used in the previous embodiments.

Next, the metal fiber paper 3 used in the present invention
Will be described.

In the present invention, the metal fiber paper 3 has a thickness of 20-8.
A sheet-shaped product having a diameter of 0 μm and having a fiber diameter of 1 to 30 μm, preferably 15 μm or less, manufactured using short fibers such as stainless steel, nickel, aluminum, brass and iron is suitable. Used for.

In particular, the metal fiber paper 3 used for producing the prepreg 1 of the present invention has a fiber diameter of 2 to 12 μm.
m, a stainless steel fiber paper using a stainless steel short fiber having a fiber length of 1 to 10 mm is preferable, and for example, those commercially available as a stainless steel fiber sheet from Tomoegawa Paper Co., Ltd. can be preferably used.

In the manufacturing process of the metal fiber paper 3, an organic or inorganic binder is used, but the binder can be removed in the manufacturing process if necessary. In the present invention, it is possible to use either a high-content paper in which the binder remains in the metal fiber paper or a sintered paper in which the binder is completely removed and 100% metal fiber is used. Usually, as the organic binder, wood pulp, synthetic pulp (PE, PP), aramid pulp, MF
Pulp-like substances such as C; PVA fibers, acrylic fibers, composite fibers (PE / PP), fibrous substances such as low-melting polyester fibers; latexes, polyethyleneimine, CMC,
Liquid materials such as acrylic resins, melamine resins, urea resins, and phenol resins; powder materials such as various starches, PVA, and phenol resins, and inorganic binders are colloidal materials such as silica sol, alumina sol, and zirconia sol. A liquid material such as sodium silicate, sodium phosphate, magnesium phosphate, sodium phosphate, lithium borate is used.

According to the results of the studies and experiments conducted by the present inventors,
The metal fiber paper 3 is a porous body in which a large number of pores are formed regardless of the presence or absence of a binder, and when the metal fiber paper 3 is pressed and attached to the side surface of the fiber-reinforced composite resin layer 4. The matrix resin 5 in the fiber-reinforced composite resin layer 4 penetrates into the pores of the metal fiber paper 3 so that the metal fiber paper 3 and the fiber-reinforced composite resin layer 4 can be completely integrated. Furthermore,
Particularly in the prepreg 1 shown in FIGS. 3 to 6 and 9,
When attaching the metal fiber paper 3 to the fiber-reinforced composite resin layer 4,
The air bubbles (voids) generated on the laminated surface of the metal fiber paper 3 and the fiber-reinforced composite resin layer 4 can escape to the outside through the pores of the metal fiber paper 3, and the air bubbles remain on the laminated surface. , Virtually completely eliminated. Therefore, according to the present invention, the produced fiber reinforced prepreg 1 itself does not have a decrease in mechanical strength due to generation of bubbles, which is preferable from the viewpoint of aesthetics.

Further, the surface of the metal fiber paper 3 can be chemically treated in order to further improve the adhesiveness with the fiber-reinforced composite resin layer 4. Particularly, after degreasing treatment, chromate treatment or phosphate treatment may be performed to form a chromate layer or a chemical conversion treatment film such as zinc phosphate or iron phosphate on the metal fiber surface. it can.

Next, the golf club head of the present invention will be described in more detail with reference to Examples.

Example 1 PAN-based carbon fiber having a fiber diameter of 7.0 μm (manufactured by Toray Industries, Inc .: trade name “T300”) was used as the reinforcing fiber 2, and epoxy resin was used as the matrix resin 5. ,
A fiber-reinforced composite resin layer 4 having the structure shown in FIG. 3 was produced.
Further, the matrix resin 5 in the fiber-reinforced composite resin layer 4
Content was 35% by weight, FAW was 150 g / m ² , and thickness (T ₁ ) was 150 μm.

Next, the sheet-shaped metal fiber paper 3 was adhered to the fiber-reinforced composite resin layer 4 by pressing it with a roller to produce the fiber-reinforced prepreg 1 of the present invention having the structure shown in FIG.

The metal fiber paper 3 is a stainless steel fiber sheet using stainless steel short fibers having a fiber diameter of 8 μm and a fiber length of about 3 mm (stainless steel fiber sheet (high compound paper manufactured by Tomoegawa Paper Co., Ltd.), weight of 95 g / m ² , thickness (T ₂ ) 3
7 μm) was used.

Fiber-reinforced prepreg 1 thus obtained
On the side opposite to the fiber-reinforced composite resin layer 4 with a basis weight of 30 g /
The same epoxy resin as the matrix resin 5 was applied at m ² to obtain the fiber reinforced prepreg 1 having the structure shown in FIG. The total thickness of this fiber reinforced prepreg 1 was 187 μm.

Further, forty-three such fiber-reinforced prepregs 1 are laminated and cured to form a face molding 1.
00 was produced. The total thickness of the face molding 100 is 8 m.
It was m. Next, this face molding 100 was processed into a face of a commercially available wood club and integrally bonded with an adhesive. Then, the face surface was polished into a predetermined shape and finished to manufacture a golf club head. The reinforcing fibers 2 in the prepreg layer 1 ′ were arranged so as to extend in the lateral direction of the face molding 100, that is, in the left-right direction in FIG. 1.

The workability was easy, and the face of the golf club head was aesthetically pleasing. or,
The wear resistance was several times better than that of the conventional golf club head in which a resin plate was arranged on the face, and the compression strength and impact strength were also improved. Furthermore, the feel during use was also good.

Example 2 As in Example 1, the reinforcing fiber 2 has a fiber diameter of 7.0 μm.
m is a PAN-based carbon fiber (manufactured by Toray Industries, Inc .: trade name "T300"), and the matrix resin 5 is an epoxy resin to produce the fiber-reinforced composite resin layer 4 having the configuration shown in FIG. did. Further, the content of the matrix resin 5 in the fiber-reinforced composite resin layer 4 is 35% by weight, and the FAW is 15
The thickness (T ₁ ) was 0 g / m ² and 150 μm.

Next, the sheet-shaped metal fiber paper 3 was pressed onto the fiber-reinforced composite resin layer 4 with a roller and bonded to produce the fiber-reinforced prepreg 1 of the present invention having the structure shown in FIG.

The metal fiber paper 3 is a stainless steel fiber sheet (stainless steel fiber sheet (sintered paper manufactured by Tomoegawa Paper Co., Ltd.) using a stainless steel short fiber having a fiber diameter of 8 μm and a fiber length of about 3 mm, and a basis weight of 110 g / m ² , thickness (T ₂ ) 4
3 μm) was used.

Fiber-reinforced prepreg 1 thus obtained
On the side opposite to the fiber-reinforced composite resin layer 4, the basis weight is 35 g /
The same epoxy resin as the matrix resin 5 was applied at m ² to obtain the fiber reinforced prepreg 1 having the structure shown in FIG. The total thickness of this fiber reinforced prepreg 1 was 193 μm.

Further, 41 face-reinforced prepregs 1 of this kind are laminated and cured to form a face molding 1.
00 was produced. The total thickness of the face molding 100 is 8 m.
It was m. Next, this face molding 100 was processed into a face of a commercially available wood club and integrally bonded with an adhesive. Then, the face surface was polished into a predetermined shape and finished to manufacture a golf club head. The reinforcing fibers 2 in the prepreg layer 1 ′ were arranged so as to extend in the lateral direction of the face molding 100, that is, in the left-right direction in FIG. 1.

The workability was easy, and the face of the golf club head was aesthetically pleasing. or,
The wear resistance was several times better than that of the conventional golf club head in which a resin plate was arranged on the face, and the compression strength and impact strength were also improved. Furthermore, the feel during use was also good.

[0038]

The golf club head according to the present invention configured as described above has excellent wear resistance and mechanical strength such as compressive strength and impact strength.
It has the feature of being excellent in touch and aesthetics during use.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a golf club head according to the present invention.

FIG. 2 is a perspective view of an embodiment of a golf club head according to the present invention.

FIG. 3 is a cross-sectional configuration diagram of an example of a prepreg for manufacturing a golf club head according to the present invention.

FIG. 4 is a cross-sectional configuration diagram of another embodiment of the prepreg for manufacturing the golf club head according to the present invention.

FIG. 5 is a cross-sectional configuration diagram of another embodiment of the prepreg for manufacturing the golf club head according to the present invention.

FIG. 6 is a cross-sectional configuration diagram of another embodiment of the prepreg for manufacturing the golf club head according to the present invention.

FIG. 7 is a cross-sectional configuration diagram of another embodiment of the prepreg for manufacturing the golf club head according to the present invention.

FIG. 8 is a cross-sectional configuration diagram of another embodiment of a prepreg for manufacturing a golf club head according to the present invention.

FIG. 9 is a cross-sectional configuration diagram of another embodiment of the prepreg for manufacturing the golf club head according to the present invention.

FIG. 10 is a cross-sectional configuration diagram of another embodiment of the prepreg for manufacturing the golf club head according to the present invention.

[Explanation of symbols]

 1, 1'prepreg (prepreg layer) 2 reinforcing fiber 3 metal fiber paper 4 fiber reinforced composite resin layer 5 matrix resin 5'resin layer 100 face molded product

Claims (1)

[Claims] 1. A prepreg layer in which a fiber-reinforced composite resin layer in which a matrix resin is impregnated in a reinforcing fiber or a resin layer having no reinforcing fiber is arranged on at least one side of a metal fiber paper, and at least a face. A golf club head, characterized in that one layer or a plurality of layers are provided on a part or the whole of the above.