Patent ID: 11872744
Assignee: BLOCKWISE ENGINEERING LLC
Field: Other special machines (Mechanical engineering)
Classification: CPC B  A | IPC B

Claim 4:
5. The parison tube former of claim 1, further comprising:
e) a first necking apparatus configured on an end of the radial compression heater comprising:
i) a necking die configured to move from an open configuration to a closed configuration;
wherein the necking die is configured in an open configuration to receive said preform tube into the heater;
wherein the necking die is configured to close after stretching the preform tube; and
wherein said first stretched portion is configured for actuation through the necking die to reduce a diameter of the first stretched portion by at least 5% and then press a first end of said balloon portion against the necking die to neck the first end of the balloon portion to produce a first necked end of the balloon portion.