Patent ID: 11951669
Assignee: BODO RICHTER
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 8:
9. The machine according to claim 8, in which for producing one of a double-walled corrugated or cup-shaped tubular body, the expanding mandrel is moved into a retracted state after forming the at least one tubular preform by means of the hollow mold having the one of the corrugated profile or the cup profile,
afterwards at least one second tubular preform is output from the nozzle head, which at least one second tubular preform faces the not yet cooled at least one tubular preform in the hollow mold having the one of the corrugated profile or cup profile,
the expanding mandrel expands the at least one second preform and brings it into contact with the at least one tubular preform present in the hollow mold so that the at least one second preform welds to the at least one tubular preform present in the hollow mold at contact points,
and in which the at least one tubular preform in the hollow mold and also the at least one second preform are cooled off together.