Deep draw ratio limitation of PLA vacuum forming

Problem Phenomenon

The vacuum deep draw ratio of PLA sheet is limited and cannot reach the level of PP.

Cause Analysis

The ductility of PLA is limited, and the deep draw ratio is <2:1, otherwise it breaks.

Solution

Select high-ductility PLA grades; raise the sheet temperature; use an auxiliary plug.

Key Takeaway

The deep draw ratio of PLA is a design constraint.

PLA vacuum forming deep draw ratio ductility

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