Where:
p: shrinkage stress of plastic products. Plastic products are cooled in a mold and cooled to 19.6 MPa 39.2 MPa outer mold
A: surface area of the core enclosed by plastic products (m2)
α1: corner exit mold
F: traction (N). Oblique bending of the key forces: Fb = F / cos α
(where: α is the angle of the bottom oblique)
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