Where were you when the lights went out? If you had a power backup option for the Petform, a PET preform injection press from Krauss-Maffei Kuntstofftechnik GmbH, you'd be OK.
In case of a power outage, the optional backup ensures that the production cycle concludes before the entire system stops. The unit monitors the power supply constantly. In a blackout, it first checks the status of the injection cycle. If the cycle has not started yet, the backup unit closes the needles. If injection already has started, the operating voltage will be sustained, then after injection is finished, the needles are closed and it shuts down.
As soon as the power comes back on, the preforms can be demolded, assisted only by the part ejector.
The backup option avoids short shots that, when frozen in the mold core, must be removed by core hammering, which can damage the sensitive mold.
Krauss-Maffei is based in Munich, Germany. Its U.S. headquarters, Krauss-Maffei Corp., is in Florence, Ky.
Tel. 859-283-4366, fax 859-283-9631, e-mail [email protected] corp.com