AS 1332:2000 pdf free download – Conveyor belting-Textile reinforced

AS 1332:2000 pdf free download – Conveyor belting-Textile reinforced.
The textile carcass shall Consist of one or nre essentially parallel plies uhe number designated ‘n’ in Table 5) of fabric or cord reinforcement. The reinforcement shall consist of natural or synthetic fibres (or both). It shall be evenly and firmly laid or woven and be free from foreign matter and defects such as knots, lumps and irregularities of twist. The construction of plied belting shall he either fu1l width ply’ or steppcd ply’.
NOTES:
1 The defects described cannot be completely quantified. Where the presence. size or frequency of any of these are considered to be of concern, arrangements should be made between the purchaser/regulatory aulhorily/certifying IIy (as appropriate) and the manufacturer. This may be achieved by the provision of acceptable type samples or methods of test. Where defects are present and the product is submitted for acceptance. the manufacturer should be able to demonstrate fitness for purpose.
2 Ply joints are not recommended in one-ply and two-ply belts.
4.2.2 Transverse ply joinis
Transverse ply joints shall he not less than 15 m from the ends of the belt, and at an angle between 40 degrees and 50 degrees from the longitudinal axis. The gap between ply ends in such joints shall he flot greater than 10 mm, nor shall plies he overlapped.
The distance between transverse joints shall be as follows:
(a) The joints in adjacent plies shall be not less than 3 rn apart.
(b) The joints in non-adjacent plies shall be not closer than the width of the belting.
(c) Where two plies or one ply and a portion of another ply are formed by folding the fabric at the edges. the joints in the fabric used shall be not less than 3 m apart.
(d) In outer plies, the joints in the same ply shall he not less than 100 rn apart.
(e) In inner plies, the joints in the same ply shall he not less than IS m apart and not more than two such joints shall he in any ply in each 1(X) m of belting.
4.2.3 Lan çitudina! ply join is
4.2.3.1 Spacing of joints
The spacing of longitudinal ply joints shall comply with the following requirements:
(a) Joints shall be not less than 100 mm from the edge of the carcass.
(b) A joint shall not less than 100mm from any longitudinal joint in other plies.
(c) The joints in OflC ply shall he separated by not less than 300 mm where the width of the belting permits two joints in the same ply.
6.10 Tracking
When running on correctly aligned equipment and, after due efforts have been made to align the belting centrally on the equipment. the belting shall not move sideways at any point on the equipment by more than the following amounts:
(a) BcltingKoommwide ±40mm.
(b) Belting >800 mm l&0() mm wide ±5 percent of the belting width.
(C) Belting >1600 mm wide ±80 mm.
NOTE: Tracking is commonly carried out in the field.
7 MARKING
Belting shall be permanently marked using characters 20 mm to 50 mm high, each group of markings being spaced at not more than I 5 m intervals, and no greater than 100 mm, from and parallel to one edge with the following information (see Figure 1):
(a) Designation of the belting, including suitable identification for Grade Z covers.
(h) The thickness of the wp cover followed by the thickness of the bottom cover expressed in millimetres, where applicable (see Note to Clause 5.4).
(C) Manufacturer’s serial number.
(d) Last two digits of the year of manufacture.
(e) Manu facturer’s identification or trademark.
(f) Progressive station numbers, when required by the purchaser, except that this requirement shall not apply to belting supplied Ex stock’.