WSA manufactures prefeeders for both Bottom Print and Top Print machines with sizes up to 2200mm x 5500mm. For Bottom Print Jumbo machines WSA offers a Block Push Prefeeder with similar features as above. For Top Print Jumbo machines WSA offers the Dual Inverter Prefeeder also with similar features as above. 
 

Overall
• Maximum Sheet Feed 5100mm(W) x 2100mm(L)
• Maximum Stack Height 2,000mm 
• Maximum Stack Weight 1800kgs 
• Maximum Production Speed 150 sheets per minute Speed may increase or decrease depending on stack size and sheet thickness and printing machine capability 200 Sheets/Min for double wall sheet due to thickness
• Machine Model WSA-BPF 
• Machine Type: Block Push using finger features 

Detail

• Power adjustable length and speed of extendo conveyor 
• Centering pusher at shingle gate for squaring 
• Stack centering at plastic belt separation conveyor 
• Newly improved block pusher using finger features 
• Block pusher powered by electrical motor 
• Vacuum devices at lift table to take out only a bottom sheet 
• Sheet hold roller at end of extendo conveyor 
• Power adjustable extendo side tampers 
• Auxiliary tamper kit for lead edge feeder
• Automatic Bottom Sheet Waste Discharge to Operator Side 
• Power adjustable height of shingle