TREA

Shaping by liberation of internal stresses Making preforms having internal stresses Apparatus therefor

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Industry

  • CPC
  • B29C61/00
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B29Plastic substance processing B29CSHAPING OR JOINING OF PLASTICS SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL AFTER-TREATMENT OF THE SHAPED PRODUCTS

Current Industry

B29C61/00Shaping by liberation of internal stresses Making preforms having internal stresses Apparatus therefor

Sub Industries

B29C61/003characterised by the choice of material B29C61/006the force created by the liberation of the internal stresses being used for compression moulding or for pressing preformed material B29C61/02Thermal shrinking B29C61/025for the production of hollow or tubular articles B29C61/04Thermal expansion B29C61/06Making preforms having internal stresses B29C61/0608characterised by the configuration or structure of the preforms B29C61/0616layered or partially layered preforms B29C61/0625Preforms comprising incorporated or associated heating means B29C61/0633Preforms comprising reinforcing elements B29C61/0641Clips for dividing preforms or forming branch-offs B29C61/065Preforms held in a stressed condition by means of a removable support; Supports therefor B29C61/0658consisting of fibrous plastics material B29C61/0666comprising means indicating that the shrinking temperature is reached B29C61/08by stretching tubes B29C61/10by bending plates or sheets
Industries