| A belt has two components - carcass
and covers. |
| CARCASS |
| The function of the carcass is to
transmit and absorb the forces acting on the belt. |
| |
| The carcass consists of one-or more
plies of textile fabric with rubber on each side to give adhesion
and flexibility. The longitudinal direction is called warp and
the cross direction is called weft. One letter is designating
each. |
|
Cotton (B)
|
|
| A natural fiber used in both warp and weft. Cotton is still
used in conveyor belt fabrics, but it is being displaced by
synthetic materials. |
 |
|
| Polyester (E) |
| Synthetic fibers such as Terylene, Trevira, Diolen,
and Tetoron. Polyester fabrics are not influenced by moisture
or micro-organisms. They are very flexible, have stability in
length, and are acid resistant. |
|
| Polyamide (P) |
| Synthetic fibers known as Nylon and
Perlon. This fabric has more or less the same characteristics
as Polyester, but not the length stability. |
|
| Polyester-Polyamide (EP) |
| The EP fabrics have Polyester as the
warp and Polyamide as the weft. This combination gives the best
possible fabric characteristics with the following advantages: |
| |
- high strength in proportion to weight
|
| |
- high resistance to impact |
| |
- negligable elongation |
| |
- great flexibility, excellent troughability |
| |
- not susceptible to humidity and micro-organisms |
|
|
| COVERS |
| The covers protect the carcass and
give the necessary friction between belt and driving pulley
and between belt and material. |
|
