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Text version of the page
Solution: The manufacturer packaged WatlowFIREROD
Hot Runner Manifold Heaters Injection Molding 149
W A T L O W
Plastics catalog - 7347 Hot Runner Manifold Heaters
Case History
Bolt Heaters Help AttachPlatens to Injection Molding Machine
® bolt heaters with eachinjection molding machine. Correcttorque was achieved by sliding the heaters through the middle of thebolts and heating them to 95°C (200°F). This elongated the bolts by as much as 12.5 mm (0.5 in.). When the nuts were turned tight and the heaters were removed, the bolts cooled and shrank, tightening even further.Customers now benefit during initialset up as well as reassembly when the molds are changed out at the completion of production runs. The OEM credits the Watlow FIREROD bolt heaters with the increase in equipment sales. Problem: An original equipment manufacturerneeded to heat the bolts used to hold platens in their injection molding machines. To effect proper tension, the 182 cm by 7.6 cm (6 feet by 3 in.) bolt and nuts needed to be quite tight.Hot Runner Manifold Heaters Injection Molding 149