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US4769206A Method for producing a hollow body provided with a stand ring by blow moulding 失效
通过吹塑成形设置有支架环的中空体的制造方法

Method for producing a hollow body provided with a stand ring by blow
moulding
摘要:
In a blow mould firstly a convexly formed bottom is blown. An intermediate region lying between an axially displaceable bottom mould and the blow mould bears on mould portions which on introduction of the bottom mould are pivoted back for turning back the bottom region to form a stand ring and release the path for the bottom mould which is finally positioned on the blow mould so that a closed mould cavity is formed on which the transformed bottom region can be reliably applied by blow pressure.
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