A deep cup (20 cm deep x 10 cm diameter) is to be formed. Compare thermoforming, blow molding, and injection molding as processes for making the cup. What technical and economic considerations should be considered in determining which method is best?
What will be an ideal response?
To make such a long, narrow part by injection molding the mold must be quite large and the flow to fill the mold would be difficult. Blow molding, on the other hand, would be ideally suited technically because the parison would be long already and forming to the shape indicated would be fairly simple. Thermoforming, too, would be technically simple except for the possible problem of uneven sides where such a deep draw relative to the diameter is required
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What will be an ideal response?
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