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Inline sander eliminates moulder marks.

When J E J Moulding added architectural mouldings to its product line, the Nappanee, Ind., company soon discovered that it needed to upgrade its production to attain a higher level of quality.

"When we got into architectural mouldings and opened our own paint shop a few years ago, we found that the moulder marks showed up too much after staining or painting," said Tom Zurek, J E J's plant manager. While the small surface ridges were acceptable on less expensive mouldings for doors, windows and other applications, Zurek said they were unacceptable on the higher-quality architectural products.

To improve product quality and consistency, the eight-year-old company added a sanding head built by Grinding and Polishing Corp. A sanding unit was added directly to the end of each of two Weinig moulders, making additional loading or handling unnecessary.

J E J also installed special steel extension worktables to form a continuous line with the moulders. To keep the mouldings tight against the tables during sanding, without damaging the surface, air-filled pressure wheels were also added.

Both sanding heads use a Wolfhead wheel; individual abrasive paper strips can be fed out as the ends wear. "We're getting about 30,000 to 40,000 lineal feet per loading," Zurek said.

The moulder and sander normally feed stock at 55 to 60 feet per minute. The sanding head can be swung out of the way when it is not required.

The sanding wheels are used on all woods, including complex mouldings and flat, plain pieces. Previously, these items were hand sanded -- a slow, tedious process. Now, with the sanding wheel positioned at the end of each moulder, the part comes off the line sanded and ready to paint or stain. "We're taking the moulder marks off, along with any high or frayed edges," Zurek said.

Initially, J E J was concerned that the operation might remove some of the moulding profiles, so the company started using 150-grit sandpaper in the wheels. Tests, however, showed that going to a coarser 120-grit paper, even at higher wheel pressure, was not detrimental to the shape. What's more, Zurek said the edge is better with the 120-grit paper. Nevertheless, the company continues to experiment with other grits to find the best combination for each moulding.

A secondary use for the sanders is in the company's vinyl-wrapping operation, As colors or styles become obsolete, J E J is able to recycle products by rewrapping them with a different vinyl or melamine material. While the adhesive would not normally stick well to the smooth vinyl, running a wrapped piece through one of the sanding heads scuffs up the vinyl enough to allow the piece to be rewrapped.
COPYRIGHT 1992 Vance Publishing Corp.
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Copyright 1992, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Title Annotation:JEJ Moulding's sanding unit
Publication:Wood & Wood Products
Date:May 1, 1992
Words:447
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