| 摘要 |
A furnace spacer ( 10, 30, 50, 70 ) for spacing a first annular preform ( 22 ) from a second annular preform ( 22 ) in a furnace ( 100 ), each of the first and second annular preforms ( 22 ) having an outer periphery and a width and an inner opening having a periphery and a width, the spacer ( 10, 30, 50, 70 ) having an annular body ( 12, 32, 52, 72 ) having an inner diameter and an outer diameter. Also a method of alternately stacking spacers and preforms in a furnace.
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