Gravity boxes are used in the agriculture industry to haul feed or grain from fields to an unloading area. When the door is open to release the load, grain flows down the sloped sides using gravity to generate the movement.

The Problem

Typically, a graphite paint is sprayed or rolled onto the interior substrate to provide a slick, non-stick surface. After one season, the paint is usually worn away, requiring the farmer to reapply the treatment each year.

The Solution

By applying 1.3 - 1.5mm adhesive-backed UHMW, farmers get a durable lining that provides better release of materials. Two typical drawbacks - tedious fastening and thermal expansion - are not problems with bondable UHMW. It took only two hours to install the liner pictured. Because the entire surface is bonded and held rigidly to the substrate, thermal expansion is controlled.

Bonded UHMW is an ideal application for an industry where corrosion, abrasion and release are major issues.