plug forming

plug forming

[′pləg ‚fȯrm·iŋ]
(engineering)
Thermoforming process for plastics molding in which a plug or male mold is used to partially preform the part before forming is completed, using vacuum or pressure.
References in periodicals archive ?
In this case, heating the tips for all cavities can result in less of a plug forming, which can produce more stable balance from shot to shot.
TiroPak is marketing both the packaging material and Powerpak machinery with tooling, sandwich heater and plug forming that shapes food containers.