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Application filed by Chang-Ming Sih GeorgefiledCriticalChang-Ming Sih George
Priority to TW83104219ApriorityCriticalpatent/TW282428B/en
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Publication of TW282428BpublicationCriticalpatent/TW282428B/en
A forming method for a gradually expandable mold, including: (1) a fixed external mold utilized as a basic mold for forming; (2) at least one layer of expandable mold installed inside the basic mold; each layer of expandable mold being isolated in the initial phase; (3) an inlet port at one end of the external mold for a continuous injection of pressurized melted material; (4) the expandable molds capable of expanding from the innermost layer to the outermost layer in sequence; (5) filling the first layer of expandable molds with the melted material injected through the inlet port; (6) the first layer of expandable molds moving toward the other end after it was filled; therefore, the second layer capable of receiving the melted material continuously; (7) taking out the formed mold.
TW83104219A1994-05-101994-05-10Forming method for a gradually expandable mold
TW282428B
(en)