Category Archives: FAQ

What is the HACCP process?

The HACCP (Hazard Analysis Critical Control Point) process is a method intended to reduce the maximum number of sanitary risks in agri-food industries.
This method is based on 7 main principles aiming to control risks during the process and to analyse the hazards during verification of the effectiveness of the implemented system.
The Mafdel range of belts and conveyor belts helps provide an optimum level of hygiene to satisfy the requirements of this process.

How do Mafdel products help achieve an optimum level of hygiene in the agri-food industries?

One of our priorities is to provide quality products that contribute to compliance with hygiene standards.
Our belts and conveyor belts in the agri-food range comply with the most stringent standards and offer characteristics that help attain an optimum level of hygiene:

  • Our mono-material products do not have textile threads, which eliminates the risk of fraying
  • Waterproof and rot-resistant products
  • Easy to clean
  • Resistance to chemical aggression: solvents, oils, fats, cleaning products, etc.

Using Mafdel belts and conveyor belts also helps satisfy HACCP process requirements.

What is cogging used for on v-belts?

Cogging allows increased belt flexibility and therefore reduces the minimum pulley diameter.
Cogging cannot be used for driving using a cogged pulley.

How do you weld a reinforced belt?

Our reinforced belts can be welded together in the same way as our non-reinforced belts, using just an iron and clamp. The aramid reinforcement on our belts is resistant to very high temperatures, it does not need the reinforcement to be removed at the joint before welding.
Both types of welds (end-to-end and overlap) can be used.

Why use reinforced belts?

Aramid reinforcement stops elongation on our round and v-belts.
This allows for use of long-length belts, while at the same time minimising the need for long travel tensioning devices. The maximum allowable load is also higher, especially with our overlap weld.

How are belts measured?

In the case of standard configuration (belt extended between two pulleys with the same diameter), the theoretical belt length is equal to the pulley circumference + (2x the centre distance).
For any other configurations, kindly send us a dimensional drawing of the installation.
In all cases, the tension system must be returned to its minimum position.

Our technicians are available to help you define your needs.

How are belts tensioned?

Exerted tension depends on the type of belt used (from 0.5% to 8% for Mafdel belts – see the catalogue for recommendations).

There are two ways to apply tension to a belt:

  • The conveyor is equipped with a suitable tensioning system: In this case, the tensioner must be set to the minimum, install the belt and adjust the tensioner to apply the belt tension.
  • The conveyor is not equipped with a tensioning system, or it is insufficient: In this case, you must use pre-tensioning tools comprising a winch and two tightening jaws, which will enable you to pull the belt ends together and then apply the welding process.

If the belt is reinforced, you must take care not to apply excessive force, which could destroy the reinforcement.

How to weld a conveyor belt?

All belts can be endless welded or delivered open for on-site welding.

Conveyor belts can be welded in two ways:

  • Thermowelding: We offer our end-to-end welding kits. Option for hot air welding (adding material).
  • Fasteners: Belts can also be jointed using polyurethane or stainless still clips (recommended for pulley diameters greater than 120 mm). This type of jointing is highly recommended for frequent assembly/disassembly or for repair.

> See more details in the joints and tools section