SETT VID TILLVERKNING AV BOLLAR INNEHALLANDE EN BLANDNING AV LUFT OCH SVAVELHEXAFLUORID

A method is provided for rapidly distributing mixed gases throughout a partially evacuated ball mold. The invention is particularly useful in the pressurizing of tennis ball centers with a mixture of air and a low permeability gas. By this invention, the distribution of the low permeability gas thro...

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Bibliographische Detailangaben
1. Verfasser:	T F REED
Format:	Patent
Sprache:	swe
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING AMUSEMENTS APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING,CLIMBING, OR FENCING BALL GAMES GAMES HUMAN NECESSITIES MAKING GRANULES OR PREFORMS PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPORTS TRAINING EQUIPMENT TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method is provided for rapidly distributing mixed gases throughout a partially evacuated ball mold. The invention is particularly useful in the pressurizing of tennis ball centers with a mixture of air and a low permeability gas. By this invention, the distribution of the low permeability gas throughout the mold can be accomplished by first partially evacuating air from the mold then injecting the mixed gases into the mold.