TWI697505B - Golf for short distance - Google Patents

Abstract

A golf ball for short distances includes a core and a shell layer covering the core. The center of the sphere includes a base rubber, the base rubber is composed of emulsion polystyrene butadiene rubber and solution polymerized styrene butadiene rubber, and the weight ratio of the emulsion polystyrene butadiene rubber and the solution polymerized styrene butadiene rubber ranges from 1:99 to 99:1. By mixing emulsion polystyrene butadiene rubber and solution polymerized styrene butadiene rubber, the center of the ball has the characteristics of low reflex, reducing the flying distance of the golf ball after being hit, so the user is in the same field distance and swing power , Switch to this golf ball to get more hits.

Description

Golf for short distance

The present invention relates to a ball, especially a short-distance golf ball.

Generally, when playing golf on a formal court, one hopes to hit the ball far and wide at the tee, so that the ball can fly over the vast field and reach the green in a few strokes, thereby obtaining better results. Therefore, the general golf ball is mostly polybutylene rubber as the center of the ball. This kind of golf ball has a high recoil coefficient and is easy to hit long distances. On the contrary, when playing golf in the golf driving range, because the field is small, it is hoped that the flying distance of the golf ball will be shorter, so as to avoid the golf ball from flying out of the field easily, or the distance to hit the ball is too long to increase the pick Burden. On the other hand, in the golf driving range, short-distance golf balls can provide more hits, reduce the ball replacement rate to reduce the cost of use, so the current driving range is suitable for short-distance golf balls. There is demand.

Therefore, the object of the present invention is to provide a golf ball for short distances.

Therefore, the golf ball for short distances of the present invention includes a core and a shell layer covering the core. The center of the sphere includes a base rubber, the base rubber is composed of emulsion polystyrene butadiene rubber and solution polymerized styrene butadiene rubber, and the weight ratio of the emulsion polystyrene butadiene rubber and the solution polymerized styrene butadiene rubber ranges from 1:99 to 99:1.

The effect of the present invention is that by mixing emulsion polystyrene butadiene rubber and solution polystyrene butadiene rubber, the center of the ball has the characteristics of low reflex and reduces the flying distance of the golf ball after being hit. Therefore, the user is in the same field Under the distance and swing strength, using this golf ball can get more hits.

Referring to FIG. 1, it is an embodiment of a golf ball 1 for short distances of the present invention. The golf ball 1 for short distances includes a core 11 and a shell layer 12 covering the core 11. The core 11 includes base rubber and additives. The base rubber is composed of emulsion polystyrene butadiene rubber (ESBR) and solution polymerized styrene butadiene rubber (SSBR), and the weight ratio of the emulsion polystyrene butadiene rubber and the solution polymerized styrene butadiene rubber is in the range of 1:99 to 99:1, The preferred ratio is 50:50. The additive is composed of calcium carbonate, barium sulfate, unsaturated carboxylic acid, unsaturated carboxylic acid metal salt, zinc oxide, zinc stearate, and peroxide bridging agent. The vulcanization temperature of the core 11 in the vulcanization process ranges from 140°C to 170°C, the vulcanization time is 200 to 800 seconds, and its size is between 1.51 inches and 1.59 inches. The outer shell layer 12 is selected from Surlyn or thermoplastic polyurethane elastomer.

The following experimental examples illustrate the effects of this embodiment. Generally, golf balls use polybutadiene rubber as the main material of the core. Under the conditions of PGA (compression deflection) of 50~100 and initial speed of 125fps, it reverses The coefficient is greater than 0.750, and the flight distance is greater than 200 yards. On the other hand, under the condition that the PGA (compression deflection) is also 50-100 and the initial velocity is 125fps, the short-distance golf ball 1 made in the preferred ratio in this embodiment is tested (mixing the Emulsion polystyrene butadiene rubber and the solution polystyrene butadiene rubber, the weight ratio range is 50:50), it is concluded that the short-distance golf ball 1 has a recoil coefficient of less than 0.700, and the flying distance can be less than 200 yards. Under the same PGA and high-strength strikes, this embodiment has a lower recoil coefficient and a shorter flight distance. It should be noted that, in order to make the contrast more obvious in the aforementioned experiment, the compression deflection amount (PGA) of the golf ball for short distance is adjusted to be the same as that of a general golf ball. The adjustment method can be adjusted by adjusting the emulsion polystyrene butadiene styrene. The ratio of the rubber and the solution-polymerized styrene-butadiene rubber can also be achieved by not adjusting the ratio of the emulsion-polymerized styrene-butadiene rubber and the solution-polymerized styrene-butadiene rubber. The styrene rubber and the solution-polymerized styrene-butadiene rubber can make the short-distance golf ball 1 produced with a relatively high but appropriate compression set (PGA).

It can be seen from the above experimental description that in this embodiment, by mixing the emulsion polystyrene butadiene rubber and the solution polystyrene butadiene rubber as the core 11, the short-distance golf ball 1 has the characteristics of low reflex and high compression deformation. , So that the short-distance golf ball 1 has a shorter flight distance than a general golf ball under the same hitting force, so it is suitable for golf driving range or indoor and other narrow or restricted venues to improve durability. The number of hits also allows the user to get more hits within the same distance, and increases the user's practice opportunities. Furthermore, the method of reducing the flight distance by reducing the coefficient of recoil to increase or maintain the amount of compression deformation is different from other conventional golf balls for short distances. Fill the core with metal or increase the density to reduce recoil. The coefficient can avoid the big difference between the hitting feel and ordinary golf.

In summary, in the present invention, by mixing the emulsion polystyrene butadiene rubber and the solution polystyrene butadiene rubber as the base rubber of the core 11, the core 11 has the characteristics of low reflex and high compression deformation, which can effectively The flying distance of the short-distance golf ball 1 is reduced, so that the user can freely hit the ball in a limited-range field, so it can indeed achieve the purpose of the invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

1: Golf for short distance 11: Ball Center 12: Shell layer

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Fig. 1 is a cross-sectional view illustrating an embodiment of a golf ball for short distances of the present invention.

1: Golf for short distance

11: Ball center

12: Shell layer

Claims (8)

A golf ball for short distances, including: A sphere, including a base rubber, the base rubber is composed of emulsion polystyrene butadiene rubber and solution polystyrene butadiene rubber, the weight ratio of the emulsion polystyrene butadiene rubber and the solution polystyrene butadiene rubber ranges from 1:99 to 99:1 ;and A shell layer covers the center of the sphere. The golf ball for short distances according to claim 1, wherein the weight ratio of the emulsion polystyrene butadiene rubber and the solution polystyrene butadiene rubber of the core is 50:50. The golf ball for short distances according to claim 1, wherein the outer shell layer is selected from sarin resin or thermoplastic polyurethane elastomer. The golf ball for short distances according to claim 1, wherein the core further includes an additive. The golf ball for short distances according to claim 4, wherein the additive comprises calcium carbonate, barium sulfate, unsaturated carboxylic acid, unsaturated carboxylic acid metal salts, zinc oxide, zinc stearate, and peroxide Bridging agent composition. The golf ball for short distances according to claim 1, wherein the vulcanization temperature of the core is 140°C to 170°C. The golf ball for short distances according to claim 1, wherein the vulcanization time of the core is 200 to 800 seconds. The golf ball for short distances according to claim 1, wherein the size of the center of the ball is between 1.51 inches and 1.59 inches.

Images