CPC Main Group
B29C 61/00 Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor (for surface shaping B29C59/18; for lining articles B29C63/38; for joining preformed parts B29C65/66 )
5 direct subcodes
Child Classifications
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- B29C 61/02 Thermal shrinking
- B29C 61/04 Thermal expansion
- B29C 61/06 Making preforms having internal stresses, e.g. plastic memory