JPH0452152B2 - - Google Patents
Info
- Publication number
- JPH0452152B2 JPH0452152B2 JP60262002A JP26200285A JPH0452152B2 JP H0452152 B2 JPH0452152 B2 JP H0452152B2 JP 60262002 A JP60262002 A JP 60262002A JP 26200285 A JP26200285 A JP 26200285A JP H0452152 B2 JPH0452152 B2 JP H0452152B2
- Authority
- JP
- Japan
- Prior art keywords
- ball
- ball core
- core
- sponge rubber
- density
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229920001971 elastomer Polymers 0.000 claims description 11
- 239000005060 rubber Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 150000005846 sugar alcohols Polymers 0.000 claims description 4
- 229920001187 thermosetting polymer Polymers 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 239000011162 core material Substances 0.000 description 18
- 239000006260 foam Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 239000007799 cork Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Pens And Brushes (AREA)
- Electromagnets (AREA)
- Materials For Medical Uses (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、適度の軟度を持つて反発力を押えた
低反発のボール芯に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a low-repulsion ball core that has appropriate softness and suppresses repulsion force.
従来、球技に用いられるボールはより長い飛距
離を常に求められ、これを実現せしめるために高
弾性・高反発力のある芯体を開発してきた。
Traditionally, balls used in ball games have always been required to fly longer distances, and to achieve this, core bodies with high elasticity and high repulsion have been developed.
しかしここで、その飛距離に対して一つの規制
がなされ始め短かい飛距離を持つボールの開発が
急がれている。この短飛距離を求めたボール芯と
しては、合成樹脂または合成ゴムを単体で発泡形
成せしめた発泡芯体か、あるいは粉砕コルクなど
の木質気泡物を混合した気泡芯体を形成する等少
例がある。 However, regulations have begun to be put in place regarding the flight distance, and there is an urgent need to develop balls with short flight distances. Ball cores designed to achieve short flight distances include foamed cores made by foaming synthetic resin or synthetic rubber alone, or foamed cores made by mixing wood foam such as crushed cork. be.
しかしながら、前記の発泡芯体では短時間の発
泡が困難で大きい芯体を形成時には特に長い成形
時間を必要とし発泡密度も不安定で均一性がない
など成形コストの高いものでしかなかつた。
However, with the above-mentioned foam core, it is difficult to foam in a short period of time, a particularly long molding time is required when forming a large core, and the foam density is unstable and non-uniform, resulting in high molding costs.
また、後者の木質気泡芯体では基材であるコル
ク樹脂が天然物で大量生産を成せるものでないか
らどうしても高価であり製品に対し大きく価格的
圧迫を与えていた。よつて本発明は、これらの欠
点を解消するために開発されたものであつて、十
分な軟度を持つて低反発の飛距離を押えることの
できる芯体を形成し、あわせて製品コストの低減
をも計ることを目的としている。 Furthermore, in the latter case, the base material of the wood foam core is cork resin, which is a natural product and cannot be mass-produced, so it is inevitably expensive, which puts a great deal of pressure on the price of the product. Therefore, the present invention was developed to eliminate these drawbacks, and it forms a core body that has sufficient softness and can suppress flight distance with low rebound, and at the same time, reduces product cost. The aim is to also measure the reduction.
以下、図面を参照しつつ詳述する。 A detailed description will be given below with reference to the drawings.
本発明は、第１図に示す様に、加硫されたスポ
ンジゴムを適度の粒度に粉砕してスポンジゴム細
片１を得、該スポンジゴム細片１に熱硬化性樹脂
２及び多価アルコール３を混合し、該混合物１，
２，３を所望するボール芯形状をなした型枠に充
填して加熱せしめ所望の形状のボール芯を形成せ
しめたボール芯を特徴としている。
As shown in FIG. 1, the present invention involves crushing vulcanized sponge rubber to an appropriate particle size to obtain sponge rubber pieces 1, adding thermosetting resin 2 and polyhydric alcohol to the sponge rubber pieces 1. 3, and the mixture 1,
The present invention is characterized by a ball core in which 2 and 3 are filled into a mold having a desired ball core shape and heated to form a ball core in a desired shape.
本発明を成すスポンジゴム１は、数種の薬品を
混合した未加硫ゴムに発泡剤を配合して加熱発泡
及び加硫せしめ、その内部に無数の独立気泡を形
成したものであり、その容積に対する密度は極め
て低いから必然的に反発弾性も該密度に伴つて低
下している。このスポンジゴムを所望する粒度に
粉砕して細片状に造形するが、この段階で該細片
の粒度を調節し密度の変更、すなわち反発力の調
整をなすことができる。この様にして形成された
スポンジゴム細片１に、例えばエポキシ樹脂等の
熱硬化性樹脂２を混合して凝集させ、このときト
リエチレングリコール・ポリエチレングリコール
等の多価アルコールを加えてその密度及び硬度を
調整する。得られたボール芯は低密度（0.24〜
0.80）に造形され低反発力を発揮するものとなつ
た。
The sponge rubber 1 of the present invention is made by blending a foaming agent into unvulcanized rubber mixed with several types of chemicals, foaming and vulcanizing it by heating, and forming countless closed cells inside. Since the density of the material is extremely low, the impact resilience necessarily decreases with the density. This sponge rubber is crushed to a desired particle size and shaped into strips. At this stage, the particle size of the strips can be adjusted to change the density, that is, adjust the repulsive force. The sponge rubber strips 1 thus formed are mixed with thermosetting resin 2 such as epoxy resin and coagulated, and at this time polyhydric alcohol such as triethylene glycol or polyethylene glycol is added to adjust its density. Adjust hardness. The resulting ball core has a low density (0.24~
0.80) to exhibit low repulsive force.
これを芯材として、表皮をつけてボールを完成
させるが例えば第２図に示す如く数種の外皮材料
をもつて外殻４を形成し所望する形状のボールを
得るが、外殻は特にこだわらず、従来の方法でこ
れを形成すればよい。 Using this as a core material, a skin is attached to complete the ball. For example, as shown in Fig. 2, an outer shell 4 is formed using several types of outer skin materials to obtain a ball of the desired shape, but the outer shell is not particularly particular. First, it can be formed using conventional methods.
ニトルリゴムの発泡スポンジを粉砕し、これと
エポキシ樹脂とを５分間混合する。
A nitrile rubber foam sponge is crushed and mixed with the epoxy resin for 5 minutes.
このとき、求める密度及び硬度によつてトリエ
チレングリコールあるいはポリエチレングリコー
ルを加える。 At this time, triethylene glycol or polyethylene glycol is added depending on the desired density and hardness.
混合されたものをボール芯形状のキヤビテイを
持つ型内へ充填し、約170℃で10分間加熱してボ
ール芯を形成する。 The mixture is filled into a mold with a ball core-shaped cavity and heated at approximately 170°C for 10 minutes to form a ball core.
形成されたボール芯は、２mmの高さから自然落
下させて14〜17cmの低反発が認められた。 The formed ball core was allowed to fall naturally from a height of 2 mm, and a low rebound of 14 to 17 cm was observed.
以上の説明の様に、本発明は加硫したスポンジ
ゴムを用いて形成するため特別に形成したもので
ない例えば成形不良品あるいは使用済品等のスポ
ンジゴムを用いることもできるから極めて安価で
あり、かつ様々な密度にも調整できるなど理想的
な低反発ボール芯である。
As explained above, since the present invention is formed using vulcanized sponge rubber, it is possible to use sponge rubber that is not specially formed, such as a defective molded product or a used product, so it is extremely inexpensive. It is also an ideal low-repulsion ball core that can be adjusted to various densities.
第１図は本発明のボール芯の配合状態を略図で
示したものである。第２図は本発明によつて得ら
れたボールの実施例を示す断面図である。
１……スポンジゴム細片、２……熱硬化性樹
脂、３……多価アルコール、４……外殻。
FIG. 1 schematically shows the composition of the ball core of the present invention. FIG. 2 is a sectional view showing an example of a ball obtained by the present invention. 1... Sponge rubber strips, 2... Thermosetting resin, 3... Polyhydric alcohol, 4... Outer shell.
Claims (1)
に、熱硬化性樹脂及び多価アルコールを混合し、
これをボール芯形状をなした型に充填して加熱成
形せしめて所望の形状としたことを特徴としたボ
ール芯。1 Mix thermosetting resin and polyhydric alcohol with fine pieces of sponge rubber crushed into appropriate particle size,
A ball core characterized by filling this into a ball core-shaped mold and heat-molding it into a desired shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60262002A JPS62120864A (en) | 1985-11-20 | 1985-11-20 | Ball core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60262002A JPS62120864A (en) | 1985-11-20 | 1985-11-20 | Ball core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62120864A JPS62120864A (en) | 1987-06-02 |
| JPH0452152B2 true JPH0452152B2 (en) | 1992-08-21 |
Family
ID=17369644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60262002A Granted JPS62120864A (en) | 1985-11-20 | 1985-11-20 | Ball core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62120864A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4711746B2 (en) * | 2005-05-31 | 2011-06-29 | 正博 名和 | Picture frame with storage container |
-
1985
- 1985-11-20 JP JP60262002A patent/JPS62120864A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62120864A (en) | 1987-06-02 |
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