b) The sheet is placed over a mold cavity.
c) Positive pressure forces the sheet into the cavity.
d) The plastic hardens on contact with the cold mold surface,
and the part is removed and subsequently trimmed from the web.
Figure 2: Pressure Thermoforming
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a) A flat plastic sheet is softened by heating. b) The sheet is placed over a mold cavity. c) Positive pressure forces the sheet into the cavity. d) The plastic hardens on contact with the cold mold surface, and the part is removed and subsequently trimmed from the web. |
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