Process for vulcanization of elastomer products
AssigneeSumitomo Rubber Industries, Ltd.
InventorToshio Arimatsu
Life of this patent
Estimating the term…
Abstract
An improved process for vulcanization of elastomer products which includes the steps of heating under pressure, the elastomer product mounted in a metal mold by supplying vulcanizing medium, suspending the supply of the vulcanizing medium when the elastomer product has reached a predetermined temperature or passed through a predetermined time period, and subsequently supplying insert gas preliminarily extracted from atmospheric air and maintained at least under approximately the same pressure as that of the vulcanizing medium, up to the termination of the heating step so as to maintain the elastomer product at the predetermined temperature.
Claims6
A process for vulcanization of elastomer products which comprises the steps of heating under pressure, the elastomer product mounted in a metal mold by supplying thereto vulcanizing medium, suspending the supply of said vulcanizing medium when said elastomer product has reached a predetermined temperature or passed through a predetermined time period, and subsequently supplying inert gas preliminarily extracted from atmospheric air with use of molecular sieves, and maintained at least under approximately the same pressure as that of said vulcanizing medium as a heat retaining medium, up to the termination of remaining time period for the heating step so as to maintain the elastomer product at said predetermined temperature.
Dependencies are inferred from the claim text.