Ray Latchford
(not verified)

Belt Designations

Posted on 1. Oct. 2003 - 01:54

Good Morning,

Further to the links posted above, here is the text referred to in our Handbook:

"The fabric designation indicates the material used in both warp and weft, e.g. PN signifies that the fabric has Polyester warp fibres and Nylon weft fibres.

The ultimate strength of the belt in kilonewtons per metre width is shown along with the number of plies. PN1000/4 designates a belt with four plies of polyester warp, nylon weft fabric and an ultimate full-belt tensile strength of 1000kN/m. Alternatively the belt can be often described as 4 ply PN250 where the strength of the individual plies is shown."

What is not said above is that EP and PN are the exact same:

PN = polyester - nylon and

EP = Ester - polyamide

also, often the "ply" is left out of the catalogued description, ie the belt above could show as 4 PN250 (or sometimes as 4 EP250).

You will need to confirm whether the descriptions that you have are kN/m or kN/m/ply, and in the two cases you show both are plausible.

The "preferred" designation is kN/m - the "PN1000/4" as above, but the two schemes of belt description have persisted at least in Australia and S.E.Asia for 20+ years......

best regards,

Ray Latchford

Paul Haywood
(not verified)

Re:

Posted on 2. Oct. 2003 - 11:39

Dear Mr Wenjun

Yes, this PN belt we believe is an EP fabric, which is the best composition for strength and low stretch.

Is this for conveyor belts or elevator belts?

Please specify the widths, lengths and application (material handled, tonnes per hour) etc.

Best regards

Paul Haywood

Muller Beltex UK Ltd

paul.haywood@mullerbeltex.com

www.mullerbeltex.com