Discuss with the supplier, though does depend on construction / materials.

You could consider a breaker fabric.

Regards,

Lyle ■

Cant speak for other supliers but Fenner Dunlop has a range of belts that give better protection on rip and tear by using alternative carcase designs. In Australia they have what known as a Crows Foot Weave belt and then in Europe and America they use a design called UsFlex. The UsFlex belt is based around straight warp technology. Suggest you take a look at the link below. It should take you staright to the brochures section of the Fenner Dunlop America website.

Cheers

Alan

http://www.fennerdunlopamericas.com/...de/MHOG-6ZRQXU ■

Originally Posted by sganesh

Dear Experts,

Wear resistance is known for the belts to withstand against the abrasive materials. Like that whether "Tear Resistance" can be formulated? Better tear resistance will avoid slitting of the conveyor in lengthwise.

I have seen rip protection conveyors which have additional wires moulded in the top cover.

But tear resistance may be the character of the weft itself. ( and the top & bottom rubbers).

Request your comments please.

Regards,

There are number of possibilities in the fabric design to increase the tear resistance. One option is putting a breaker in top cover. Then again , many options of breaker design depending on how much tear resistance you need. So ask your belt supplier (hope you deal with knowledgable ones) and they will guide you.

Regards ■

Originally Posted by WilsonBW

As previosly stated, the UsFlex product is a striaght warp carcass design specifically for high abuse applications where impact & rip/tear resistance is required. Straight warp carcass, depending on the manufacturer, is superior in these application to a plain or broken crowes foot weave.

Any technical decisions are seen in the light of some pros and cons. Is there anything one looses if straight warp is used? I understand that the straight warp is poor in bending over the pulleys unless used with a thicker bottom cover or higher pulley dia. Also straight warps are popular in heavier fabric ratings, hence you need to use less no of plies in the belt. But what is that you loose if you use for example a 1600/2 belt istead of a 1600/4 belt (all others remaining same)? Will appreciate your veiws . ■

Originally Posted by sganesh

Thank you all for the participation.



Having a standardized method and units to measure the tear strength will help the end consumers to choose the best among the suppliers.

I feel as of now, this is missing as far tear resistance of the belt is concerned.

Regards,

Methods and units to measure tear strength of a belt are very much available with the belt manufacturers. You need to tell them how much tear strength you need, and they will work out suitable designs (weaves / construction / protective layer etc..) based on your requirement.

Regards ■

We usually perform two tests. The actual carcass rip test is sometimes called 'trouser-test' as it looks like you rip the belt as you can rip the trousers by pulling both legs. Some standards on teh issue are ISO 505 and DIN 53539.

Secondly you could check the bolt rip-out test used for elevator belts.

We produce the straight warp UsFlex in our factory in Holland, and compared to a similar plied belting construction, the tear test results in a resistance value of over 5 times the plied belting value.

http://www.dunlopcb.com/en/beltingp...ightwarp.aspx

For rip protection, you could also add one ore more breaker layers, but that would indeed affect troughability. If the conveyor design allows, also a Ferroflex would be possible, which is a steel cable mesh fabric.

http://www.dunlopcb.com/en/beltingp...einforced.aspx ■