| Bowling balls are of different kinds and | | | | As far as the material is concerned, |
| different materials. They are of different | | | | different kinds of materials have been |
| sizes as well. However, all balls have one | | | | popular over the years. Back in the 1960s, |
| essential feature: they have holes in them in | | | | the most popular bowling balls were made of |
| which a player can stick the fingers and | | | | hard rubber. In the subsequent decade, that |
| thumb for a grip. | | | | is, in the 1970s, polyester balls arrived on |
| | | | the scene. The polyester variety became so |
| The bowling ball is a piece of scientifically | | | | popular that a good number of bowling alleys |
| constructed equipment. While making the ball, | | | | still use them. In the 1980s, the urethane |
| care is taken to anchor the core of the ball | | | | balls stole the limelight. Even today, most |
| by a small rod that is suspended in a mold. | | | | of the bowling balls are made of resin |
| After that, the cover stock is poured over | | | | urethane. This variety matured in the early |
| the mold. When material hardens and the ball | | | | 1990s, when reactive urethane started being |
| is removed from the mold, the rod is also | | | | used. The most recent kind of bowling ball is |
| removed. The holes of the ball are filled | | | | made of proactive urethane, which gives the |
| with removable material. When the ball is | | | | ball a different kind of a feel and improves |
| ready, the plugs are removed and the ball is | | | | the traction. It may be compared to an |
| then set to roll. | | | | all-weather tire. An even newer variety is |
| | | | the particle technology for bowling balls. |
| The most important part of the ball is the | | | | |
| core, as it is this portion that influences | | | | Additionally, today's bowling balls come in |
| the motion of the ball. Today's | | | | various colors, and some have a coat of |
| high-performance bowling balls clearly | | | | high-gloss polish. With innovations |
| identify the core, indicating how far it is | | | | continuing in this field, more improvements |
| from the center of gravity. | | | | are expected. |
| | | | |