Gravimetric Dosing Controller GDC3100-GDC3500

One or more hoppers are mounted on each extruder which are supported by a load cell. The throughput rate is determined from this signal and with an encoder suppling line speed the weight per length of material is calculated. Each extruder speed is adjusted to maintain the correct layer percentage plus the overall average thickness is controlled. Product memory up to 250 products included.

Options

• All throughput rates are available
• Dosing to 7 components per extruder maximum 9 per system.
• Host computer/plc communications
• Printer, shift/roll reports
• Automatic shrink/stretch calculation of film
• Trim scrap software for film
• Width measurement and control of blown film

Benefits:

• Independent from bulk density of material
• Homogeneous mixing of additives and master batches
• Shorter start-up, typically 2-3 minutes to be at target
• Simple operation
• Retrofit of all existing lines or for new installations
• Fast return on investment, typically under 3 months
• Considerable reduction of scrap produced
• Increased production time due to faster start-up
• Increase in yield by typically 4-5% of resin usage

Field proven experience has shown GDC systems to operate with an accuracy of +/-0.5% in average of better of the desired target.

Plast-Control, Inc., 29 Green Street. Tel: 978-462-0306; Fax: 978-462-1425.