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Bare Back - a belt in which one side has an exposed fabric surface free of any covering. Generally supplied on the non-carrying side to reduce sliding friction.

Cleated - a belt having raised sections spaced uniformly to stabilize flow of material on belts operating on inclines. Cleats may be part of belt or fastened on.

Monofilament - a belt utilizing many single strands of untwisted synthetic fiber, such as nylon, to reduce belt stretch.

Multiple Ply - carcass is usually made with three or more plies of fabric bonded together by elastomeric material. May be furnished with smooth covers top and bottom, rough-top, friction-surface, bareback, or combinations using one type of surface for one side of the belt and another type for the other side.

Reduced Ply - the necessary carcass characteristics are obtained using fewer plies than comparable multiple-ply belts. The carcass may be made as a single unit or from plies, usually two, of nylon, polyester, or combination of these synthetics. When more than one ply is used, they are bonded together as in multiple-ply belts but with heavier skim coats between the plies. Covers available are similar to those for multiple-ply belts.

Rough Top - cover intentionally made with ridges or projections to produce an irregular surface for carrying ability when required.

Solid Woven Cotton - layer of warp threads are woven with layers of filler threads and bound together in the loom with binder threads. There are no distinct plies, but the layers or warp threads are often counted as plies they may be used with or without treatment or impregnation.

Solid Woven PVC - single-ply, solid woven carcass made from nylon, polyester, or combinations thereof, impregnated and coated with PVC (polyvinyl-chloride) plastic.

Stitched Canvas - several plies of the fabrics (usually cotton duck) are stitched together and normally treated by immersion in special compounds.

Straight Warp - the tension-bearing warp yarns are essentially straight, without crimp. The binder warp yarns are interwoven with the filling yarns to provide mechanical fastener holding strength.

See also: Belt Definitions.