作者: Jack N Shuman
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摘要: METHOD AND APPARATUS FOR FORMING PLASTIC MATERIAL INCLUDING THE PROVISION OF AN ELEVATED HEATING OVEN, A CONTOURED MOLD, OPEN FRAME MEMBER CONSTRUCTED SUPPORTING SHEET NORMALLY DISPOSED AT POSITION PERIPHERALLY SURROUNDING LOWER PORTION MOUNTING DRIVE ARRANGEMENT THAT PERMITS IT TO BE AUTOMATICALLY RAISED FROM ITS NORMAL SELECTED ITERMEDIATE LOADING THEREIN, THEN FURTHER PREDETERMINED UPPER WHICH MAY HEATED BY LOWERING IMMEDIATELY FOLLOWING WHILE STILL UNDER OVEN IS CAUSED CONFORM CONTOURS MOLD.