The shoes are then covered with a coat of rubber varnish, and are put into cars and run into the vulcanizing ovens, where they remain from six to seven hours at a temperature of about 275°. Edward W. Byrn.十九世纪发明进展.
Goodyear discovers process of Vulcanizing Rubber. Edward W. Byrn.十九世纪发明进展.
This heating or vulcanizing process fixes the elasticity of the rubber, increases its strength enormously and unites the parts in such a way as to make the shoe practically one piece. 佚名.神奇的知识之书.
The vulcanizing is a very important part of the manufacture of a rubber shoe, for it is absolutely necessary in order to give them stability and wearing qualities. Edward W. Byrn.十九世纪发明进展.
It may be mentioned here that special apparatus can be purchased for pressing and vulcanizing. 威廉K.戴维.智者、化学家和伟大医生的秘密.
But as the caoutchouc has a tendency to return to its previous shape it becomes necessary to apply the process called vulcanizing. 威廉K.戴维.智者、化学家和伟大医生的秘密.