Process for curing thick-walled articles

Details Process for curing thick-walled articles Process for curing thick-walled articles

B - Operations, Transporting

29

C

18/1176, 18/154

B29C 35/04 (2006.01) B29C 35/02 (2006.01) B29C 43/10 (2006.01) B29C 43/52 (2006.01)

Patent

CA 1315513

PROCESS FOR CURING THICK-WALLED ARTICLES ABSTRACT OF THE DISCLOSURE The heat-sink capacity of a thick-walled article being cured with a hot liquid supplying heat to one side of the wall, allows the point of least cure (PLC) to receive a higher rate of cure equivalents even after the hot liquid is replaced with a cold liquid. In the mean while, the other side of the wall continues to be heated. Because such a change-over is effected before the PLC has received the minimum number of cure equivalents required to effect a cure at the PLC (a "pre-cure change-over"), a valving arrangement is provided which allows the change- over to be effected without permitting a pressure drop in the bladder sufficient to permit the tire to "blow" be- cause it is as yet uncured when the change-over is effect- ed. Such a pre-cure change-over cannot be made when steam is replaced with water at ambient temperature.

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