Veneer Sheet Reentry System

Westmill’s Veneer Sheet Reentry System is available in many custom configurations to meet your plant’s specific needs.
Atlanta GA, Eugene OR and Vancouver BC.

Increase your plant production and improve your grading accuracy with Westmill’s Veneer Sheet Reentry System.

Westmill’s Sheet Reentry System allows you to automatically feed veneer sheets into an existing grading and stacking line. You will immediately be able to see improved sheet grading, and a reduction in veneer redrying in your plant. This translates into higher veneer production and improved sheet value, due to improved grading.

Fixed Skids for Veneer Dryer

Sheets are fed into fixed skids with jumping belts.

Backstop for Veneer Dryer

Backstop ensures that the edges of all sheets are aligned.

Backstop for Veneer Dryer

Storage belts and decline section, merging directly onto 90-degree edge belt conveyor.

Higher Production

With a Veneer Sheet Reentry System, you can run your Stacker with not just one, but two “wet” bins. Your wet/redry bin will be reserved for sheets that must be redryed (run a second time through the Veneer Dryer). The second wet bin is for wet/reentry sheets, which contain less moisture than those in the wet/redry bin. Instead of requiring a second pass through the Dryer, this stack can sit in your plant for typically 24 to 48 hours and “equalize” in moisture.

During the equalizing process, the stacked veneers contain heat, and wet sheets in the stack transfer their remaining moisture to other sheets and to the ambient environment. After equalization, the wet/reentry stack is brought to the Sheet Reentry System by forklift, and the veneers are merged into the main grading and stacking line real-time, without requiring any stoppages on the main Dryer line.

This strategy allows you to run your Dryers faster than at present, because although your wet sheet count increases, your ability to process it without redrying also increases.

And when a Westmill Redryer is used in your plant, Dryer production increases even more by using this strategy.

Reentry Dryer
Improved Grading

When the Sheet Reentry System is installed to your primary Dryer line, you gain the advantage of being able to potentially achieve better grading. Your primary Dryer may feature the latest technology – Dry Stacker with Automatic Machine-Vision Grading – but your other Dryer lines may not.

By keeping the Reentry System at capacity, each reentered sheet will be automatically graded, more accurately than the manual grading typical of older Dryer lines.

Configuration & Supply

Westmill can supply systems to feed in the 8’ (cross-grain) direction, or in the 4’ (grain) direction. The 8’ Sheet Reentry Systems are capable of steady reentry speeds of approximately 20 sheets per minute, whereas 4’ systems are capable of 15 sheets per minute.

The typical system includes:

  • Load storage rollcase, capable of 1 or 2 load storage (more available).
  • Scissor lift with rollcase top and hydraulic motor (electric available if preferred). Hydraulic Power Unit if required.
  • Vacuum Feeder system, complete with fan and drive (motor, belts, variable frequency drive – VFD cabinet).
  • Belt conveyors to merge sheets into main grading/stacking line. Includes VFDs as required for start/stop and merging.
  • PLC hardware and programming, touchscreen hardware and programming. Westmill can add on to existing hardware to minimize costs.
Operational Description

The forklift operator brings a single veneer load and places it on the infeed load storage rollcase. From here the load proceeds onto a scissor lift, which raises the load and brings the top sheet to a feeding position. Pick-up boxes descend from the Vacuum Feeder and lift a single veneer sheet.

The feeder belts then convey the single sheet onto a transport belt conveyor, then further onto a merging belt conveyor. Here the single sheet stops and waits for permission from the PLC to enter the main grading/stacking line. As soon as a gap in the veneer flow is available, the merge conveyor feeds the sheet into the flow.