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GOLF BALLS

GOLF BALLS. MSE151 Composites Dr. Jose Mario Diaz December 15, 2011. Gotico, Philipp Oracion , Cherry Anne Sible , Wilbert. Introduction. Used in the game of golf Performs within a specified velocity, distance, and symmetry limits

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GOLF BALLS

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  1. GOLF BALLS MSE151 Composites Dr. Jose Mario Diaz December 15, 2011 Gotico, Philipp Oracion, Cherry Anne Sible, Wilbert

  2. Introduction • Used in the game of golf • Performs within a specified velocity, distance, and symmetry limits • Can be personalized depending on your handicap, swing speed, and equipment specifications.

  3. History of Golf Balls • Before 17th Century - Wooden balls • 1618 - Featherieball, which is a hand sewn leather pouch stuffed with chicken or goose feathers and coated with paint. • 1848 - Gutta-percha ball, which is made from the Malaysian Sapodilla Tree by heating and shaping it while hot.

  4. History of Golf Balls • 20th century - multi-layer balls were developed, first as wound balls consisting of a solid or liquid-filled core wound with a layer of rubber thread and a thin outer shell. • Modern balls - consist of several layers of various synthetic materials like surlyn or urethane blends. They are usually classified according to the number of layers.

  5. Specifications • Weight < 45.93 grams • Diameter > 1.680 in • Must be Perfectly Round • Good elastic collision • Must not crack or deform • Must meet the specifications of the USGA

  6. Types of Golf Balls • 1-piece balls • Seldom used as playing ball • Inexpensive and very durable • Surlyn with dimples molded in • 2-piece balls • Used mostly because it combines durability with maximum distance • Solid Core: high-energy acrylate/resin • Cover: tough, cut-proof (Surlyn)

  7. Types of Golf Balls • 3-piece balls • Core: Solid rubber/liquid center • Core is covered by many yards of elastic windings • Cover: durable Surlyn/Surlyn like, or balata • Softer and take more spin allowing more control on the ball’s flight when hit • 4-piece balls • Newer form of the original 3-piece ball

  8. Ball Built-up COVER • Balata • Natural rubber; softest • Less cut resistant • Spin easier • Maximum feel and control • Surlyn • Most durable cover • Thermoplastic resins by Dupont • Better cut and abrasion resistance than balata cover • Harder cover than balatalower spin rate DIMPLES • Shallow Dimple: Low trajectory, good control • Deep Dimple: High trajectory, longer flight time

  9. The Manufacturing Process 2 1 ELASTIC WINDING (for 3-layer balls) FORMING THE CORE • Electronic winder applies rubber thread to silicone and rubber core • Electronic device, reacting to vibrations of thread in front of photocell, maintains tension. • Roll mills: mixing • Extruder: forming of the slag • Compression molding: forming of the core

  10. The Manufacturing Process 3 FORMING THE COVER AND DIMPLES • Injection molding • The core is centered within a mold cavity by pins, and molten thermoplastic is injected into the dimpled cavity surrounding the core. • Heat and pressure cause the cover material to flow to join with the center forming the dimpled shape and size of the finished ball. • Compression molding • The cover is first injection molded into two hollow hemispheres • These are positioned around the core, heated and then pressed together, using a mold which fuses the cover to the core and also forms the dimples. 

  11. The Manufacturing Process 5 4 DRYING AND PACKAGING POLISHING, PAINTING, FINAL COATING • Flash or rough spots and the seam on the molded cover are removed. • Spray guns that are automatically controlled are used to apply the paint.  • The ball is stamped with the logo • Final step: clear coat for high sheen and scuff resistance. • The balls are loaded into containers and placed in large dryers • After drying, the balls are ready for packaging in boxes

  12. Golf Balls: How is it made?

  13. GOLF BALLS MSE151 Composites Dr. Jose Mario Diaz December 15, 2011 Gotico, Philipp Oracion, Cherry Anne Sible, Wilbert

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