JPS5991972A - Solid golf ball - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a solid golf ball with improved properties.

Conventionally developed solid golf balls are made by heating and curing a composition containing a base rubber, an inert filler, an organic peroxide, and other crosslinking agents into a predetermined shape. Although it is said to have good performance,
It is said that there are points that need to be improved in terms of repulsion characteristics, two-turn performance, and impact feel performance compared to conventionally used golf balls wrapped with rubber thread.

The inventors of the present invention have studied to obtain a solid golf ball that has the excellent rebound properties of a thread-wound golf ball, as well as durability and a very good feel when hit, and found that high-performance carbon fibers, silicon carbide fibers, and poron fibers can be used as reinforcing materials. such as high strength.

The present invention has been completed by discovering that a solid golf ball that can achieve this objective can be obtained by using high modulus fibers.

That is, in the present invention, 0.00 parts by weight per 100 parts by weight of the base rubber or resin.
A solid golf ball is formed from a composition containing 10 to 400 parts by weight of at least one type of high-strength, high-modulus fiber having a length of 1 m or more, such as carbon fiber, silicon carbide fiber, or poron fiber.

As mentioned above, the feature of the present invention is that it is filled with high elasticity and high strength reinforcing fibers having a length of 0.1+w+ or more, and these high elasticity and high strength fibers may be subjected to oxidation treatment or monomer crafting if necessary. It is also possible to improve the affinity with the base material by surface treatment such as polymerization and treatment with a sizing agent.

When carrying out the present invention, the base rubber or resin used is polybutadiene, styrene-butadiene rubber, polyisoprene, natural rubber, ethylene propylene rubber, polyurethane, acrylic rubber, polyester ether rubber, A
BS resin.

High impact polystyrene, polyethylene.

Polypropylene, polycarbonate, polyethylene terephthalate, polybutylene terephthalate, epoxy resin, polyester resin, etc. can be appropriately blended and used.

These compositions also contain ZnO1BaS04.5in2, C
Inert fillers such as aCO3 and ZuC03 can be added, but Z
UO is generally preferably used, and is blended in an amount of 20 to 80 parts by weight per 100 parts by weight of the base rubber or resin.

In the present invention, such a composition is molded into a ball by a molding method such as heat curing molding, pressure molding, injection molding, or the like.

The solid golf ball according to the present invention maintains durability comparable to conventional golf balls, and has repulsion characteristics and feel at impact comparable to those of thread-wound balls.

The present invention will be explained below with reference to Examples.

Table 1 1) Polybutadiene rubber manufactured by Japan Synthetic Rubber @) 2) Basic zinc acrylate 3) Manufactured by Mitsubishi Rayon Co., Ltd. 4) Manufactured by DuPont 5) Manufactured by Mitsubishi Rayon Co., Ltd. Carbon fiber in the form of a thread prepreg as a string prepreg Molded into.

6) Solid golf balls 1 to 6 were prepared by pressure molding the obtained compositions A to F in a predetermined mold.

Solid golf balls 1 to 6 were tested for initial compression velocity and durability. The results are shown in Table-2.

Table 2 1) Stroke type compression meter (USA type) 2) Head speed 40.3 ± 0.2 (m7 seconds) 3) Relative value procedure correction form (method) with golf gear 6 as 100 % formula % 1. Indication of the case Patent Application No. 204118 filed in 1982. 2. Name of the invention: SORIRI GOLF GA-RU. 3. Person making the amendment. Relationship with the case. Patent applicant: No. 3-19 Kyobashi 2-chome, Chuo-ku, Tokyo (603) ) Mitsubishi Rayon Co., Ltd. President and Director Osamu Kanazawa 34, Agent 2-8-1 Toranomon, Minato-ku, Tokyo Sent on February 22, 1981 6, Statement of subject matter of amendment 7, Statement of contents of amendment Pure i# (No change in content) It has enemy repulsion characteristics and a striking feel.

The present invention will be explained below with reference to Examples.

1) Polybutadiene Co. 9M manufactured by Japan Synthetic Rubber Co., Ltd. 2)
Cyclic-based zinc acrylate 3) Mitsubishi Rayon Co., Ltd. #4) DuPont product 5) Mitsubishi Rayon Co., Ltd. Carbon fiber was formed into a spool shape as a string prepreg.

6) Solid golf bags 1 to 6 were prepared by pressure molding the obtained compositions A to F in a predetermined mold.

Initial compression speed and durability were tested for solid Ruf-Rules 1 to 6. The results are shown in Table-2.

Table-2 1) Stroke type combination meter (USA type)

Claims (1)

[Claims] 1. A spherical solid golf ball whose main component is a composition consisting of 100 parts by weight of a base rubber or resin and 10 to 400 parts by weight of high-strength, high-modulus fibers with a length of 0.1 mm or more.