Multiply Textile Carcass Rubber Conveyor Belt: Texter

Textile conveyor belt Texter Structure 3D

Textile multi-ply conveyor belt: Texter

Dealing with the conveyor belt industry, you must have heard about multi-ply fabric rubber conveyor belts, which are the most common and used items in any application where bulk material handling is involved.

According to SIG nomenclature, this product is identified as TEXTER, composed of nylon and polyester layers that ensure all the necessary mechanical properties. Talking in detail, any single layer of the inner carcass is manufactured with a polyester warp and nylon weft.

 

Here below, you are shown a brief table that summarizes all different TEXTER manufacturing standards depending on the required breaking load and plies number as well.

 

EP BELT STYLE N/mm (CLASSES)PLIES NUMBERFABRIC RANGE N/mm
250/ 2
2125
315/22160
400/3
3125
500/33160
500/44125
630/33100
630/44160
800/33250
800/4
4200
1000/33315
1000/44250
1000/55200
1250/33400
1250/44315
1250/55250
1600/44400
1600/55315
2000/44500
2000/55400
2500/55500
3150/66500

 

What are the main advantages guaranteed by textile carcass rubber conveyor belts?

If we focus on mechanical properties only, as chemical ones depending on specific rubber compounds will be analyzed later, EP rubber conveyor belts can let end users take advantage of an incredible number of mechanic characteristics, such as:

  • excellent adhesion between plies and covers is necessary to prevent the belt from any kind of carcass disconnections that will seriously damage and decrease the belt's lifetime;
  • wide range of tension sty;
  • low permanent elongations which is highly important when facing long conveying distances up to 500 meters where it becomes crucial to avoid any belt elongation that will cause serious handling problems;
  • maximum load support;
  • good resistance to tear and cutting;
  • good impact resistance;
  • suitable to mechanical fasteners.

For everything concerned, EP rubber conveyor belts are designed to be a unique and universal solution for many different industrial applications, assuring excellent performances thanks to specific mechanical characteristics that can let it adapt itself to any handling situation, minimizing economic impact while maximizing working efficiency.

 

 TEXTILE CARCASS RUBBER COMPOUNDS

Rubber compounds and related chemical characteristics

Up to this moment, only mechanical characteristics have been analyzed and studied, nonetheless, any rubber conveyor belt is identified through another highly important aspect: the one concerning its chemical composition and properties of rubber compound as well.

As a matter of fact, any TEXTER is composed of an inner EP carcass and two rubber covers: one on the top side and the other one at the bottom that highlight some specific chemical properties. Depending on the concerned industrial application, it is possible to choose between many different rubber compounds that guarantee different and specific characteristics matching end-user technical requirements.

Abrasion or heat-resistant, flame-retardant, mineral, and vegetable-oil-resistant are only some of the available rubber compounds that have been developed by SIG technical departments to meet with international market's different and increasing needs.

Normally, it is possible to identify four main rubber compound categories inside which different degrees are available. The final choice depends on customer-specific requirements that may differ due to conveyor system design or handled material.

ABRASION RESISTANT

It is the most common and used rubber compound in the conveyor belt industry worldwide; it can be used for many different industrial applications to handle completely different materials. Nonetheless, it is available in three options depending on the required abrasion loss.

  • CL:  is the standard abrasion-resistant degree (compared to DIN 22102 laws Y degree); it assures an abrasion loss equal or inferior to 150mm3 and it can be used for the most common handling applications;
  • EC: can be considered an upgraded version of the previous rubber compound. It is normally considered equivalent to DIN 22102 W degree since it guarantees an abrasion loss that is less than 90mm3. It is commonly used to convey abrasion materials such as pet coke;
  • AS: is the best abrasion-resistant degree as it has an abrasion loss that is equal or slightly inferior to 50mm3. It has been developed to be used for extreme handling applications involving highly abrasive material handling such as bauxite.

FIRE RESISTANT

Depending on the application and its safety requirement, it is possible to choose between two different options that are not complementary, but they answer specific needs that must be respected.

  • BS: is the self-extinguished rubber compound (matching with DIN 22102 K degree) specifically developed for above-ground and underground applications with a potential high fire risk. It is recommended for coal and potash applications, but in general for any situation where safety is fundamental (also equivalent to ISO 284);
  • TV: is the fireproof rubber compound that has been designed to work in underground applications where it is necessary that the belt does not burn and does not trigger centers of fire. It can be considered an upgraded version of the previous self-extinguished rubbers and it is recommended for all belt conveyors located close to the permanent workstations in the tunnels.

HEAT RESISTANT

This kind of rubber compound is mostly used in the cement and steel industry where handled material may undergo specific heating processes at different temperature levels. It is therefore possible to choose between:

  • CX: can be considered the first heat-resistant rubber compound option as it can resist up to a maximum continuous working temperature of 130°C with peaks up to 150°C;
  • MX: is the middle degree, an upgraded version of the previous one as it can resist up to a maximum working temperature of 150°C withstanding peaks of 180°C;
  • TX: is the maximum heat-resistant option in terms of rubber compound as it can guarantee a heat resistance of up to 200°c in continuous, with peaks up to 300°C;

OIL RESISTANT

Inside this category, it is possible to identify four different options, any of which has a special characteristic that can find the source of application inside specific industrial fields:

  • OM: is the standard oil-resistant rubber compound (matching with DIN 22102, G degree) and it is mainly used for the recycling and waste industry where it becomes necessary to rely on items guaranteeing a good resistance against vegetable oil aggression;
  • OH: is an improved version of OM type and It is mainly used to convey materials that may cause a potential mineral oil aggression to the rubber conveyor belt;
  • AG: it is a special rubber compound as it is fire and oil-resistant (so matching with DIN 22102, G and K degree). It has been specifically designed to be installed to convey oily materials with burning risks, it is mainly used for grain and sulfur handling;
  • PL: it is a specific heat-resistant (up to 120°C) and oil-resistant (G degree of DIN 22102 laws) rubber compound that is used only in specific fields of operation.

For more details and product specifications download the following TEXTER catalogue.

Texter SIG Conveyor Belt Catalogue.pdf
(2.34 MB)

Texter industrial conveyor belt application

Referring to all the different available rubber compounds and all the mechanical properties that you can take advantage of when relying on an EP carcass rubber conveyor belt, you should not be surprised to discover that TEXTER can be used to accomplish completely different tasks in many industrial applications.

To summarise what has been said up to now about TEXTER different and possible industrial applications, please, consider what follows:

Texter industrial conveyor belt in agroindustry application

How is a Texter manufactured?

TEXTER carcass construction and different specific rubber compounds have been above analyzed, it is now necessary to deal with the last technical element about EP rubber conveyor belts (except for length and width of course).

Belt top and bottom cover thickness is a crucial factor to be considered: as a matter of fact, SIG manufacturing standard expects a minimum overall thickness of 6,5mm (and a maximum one of 35mm) therefore, when designing this kind of items, it is necessary to respect such limit.

Have you ever asked yourself what a top cover task is? This one is in direct contact with handled material, and it has therefore the task of protecting the belt's inner carcass from any kind of external material potential damage or impact.

Thus, if you have to face a demanding application where a highly abrasive material has to be handled, it would be necessary to manufacture your belt with an extremely abrasion-resistant rubber compound (perhaps EC or AS one) meanwhile producing the belt with a high-top cover.

SIG's case studies conveyor belt

To give evidence of what is stated up to this moment, here below you will be given the details of two important supplies accomplished by SIG in the last years:
Conveyor Belt SIG in Grain Handling

GRAIN HANDLING

As you should have understood, the grain industry is for sure an application where SIG TEXTER can stand for an extremely reliable solution for bulk material handling, especially the ones manufactured in AG (flame and oil-resistant rubber compound). Such items have always guaranteed excellent performances, satisfying customer’s expectations.

Last year, an important French customer active in the agroindustry was provided with more than one km and a half of TEXTER 500/3 4+2 AG, 1000mm wide.

This belt is fully operational, matching all the requirements it has been designed for, guaranteeing a handling capacity of 600 tons/hour.


SULFUR HANDLING

Sulfur handling represents another industrial field where SIG has proved to be an important supplier, always managing to find the right solution for customers’ needs.

A few years ago, SIG was able to provide an Italian OEM company with different flame-resistant (BS) EP belts to be installed as part of offshore transshipment equipment for sulfur handling.

The installation had to guarantee a handling capacity of 750 sulfur tons/hours, but the remarkable data was about matching with ATEX requirements because of its flammability. Therefore, the SIG technical department suggested the following constructions (that would be adopted later):

  • EP 630/4 5+2 BS 1200mm
  • EP 500/4 5+2 BS 1200mm
  • EP 400/3 5+2 BS 1200mm
  • EP 315/2 5+2 BS 1200mm.

 

If you are looking for a high-tech EP carcass rubber conveyor belt facing the most demanding industrial applications, please, get in touch at sig@sig.it and request our technical and commercial support!
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