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Arburg introduces Lightguide panels at Chinaplas


Arburg GmbH + Co. KG has developed a hydraulic compression molding machine designed to for a 0.5 millimeter-thick optical application.
The machine and application was debuted in Shanghai at Chinaplas 2012. To mold the light guide panels, a thin optical panel intended for use in tablets and thin film transistor (TFT) screens using light-emitting diode lighting, the mold does not close completely. 
“These panels have a flow path/wall thickness ration of 350 to one,” said Jan Lachhein, group leader for application testing at Arburg. “This is why regular injection molding won’t work.”
The hydraulic Allrounder 630 S has a clamping force of 250 metric tons and operates with a two-cavity mold. It maintains a 1 mm gap until the last 50 milliseconds of the process. The mold, in turn, must be designed so that the cavity is sealed, even in the partially open state. This process helps reduce shrinkage and deformation and can accommodate precise molding specifications.
At Chinaplas, Arburg also introduced their new EDrive Allrounder for the first time in Asia.
Arburg also showcased its Allrounder 570 H as a representative of the Hidrive hybrid high-performance series.


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