Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Controlling heat transfer with molding material
Patent
1987-09-30
1989-03-28
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Controlling heat transfer with molding material
264315, 264325, 264326, 264501, 264570, B29C 3502
Patent
active
048161985
ABSTRACT:
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, on 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 changeover to be effected without permitting a pressure drop in the bladder sufficient to permit the tire to "blow" because it is as yet uncured when the change-over is effected. Such a pre-cure change-over cannot be made when steam is replaced with water at ambient temperature.
REFERENCES:
patent: 3489833 (1970-01-01), Lehnen
patent: 3632712 (1972-01-01), Miller
patent: 3718721 (1973-02-01), Gould et al.
Csontos Alan A.
Haney John D.
Lobo Alfred D.
McCarthy Neil M.
Silbaugh Jan H.
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