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22 C O N V E Y O R B E L T R E P A I R K I T What elements are included in the Conveyor Belt Repair Kit? The conveyor belt repair kit contains a jar with liquid resin a catalyst a cleaning solvent a rubber primer a pair of latex gloves a mixing paddle and a spatula How long does it take for the product to set? 15 minutes at 25°C Wait 1 hour before using the conveyor belt after repair Note Setting time can vary depending on room temperature At lower temperatures the time could be increased + - 5 min and at high temperatures it could decrease + - 5 min How should the belt surface rubber be prepared prior to the application of the product? In the case of very fine surfaces with thickness of 3 mm or less the zone must be scraped with an electric brush at low rotation speed 750 to 900 r p m on and around the damaged zone In areas with thickness greater than 3mm a bevel must be cut 45° cut around the edges of the damage so – in this manner – leave a greater contact extension between the rubber and the resin check scheme below and scrape with electric brush at low rotation speed In the event of passing rips or damage perform the same procedure including also the lower surface return How much volume can be covered with one Wurth Kit? 1 830mm x 8mm x 50mm As a reference a conveyor belt with more damage in the shroud zone of 10cm width – and where fabric is in sight 3 mm depth – one kit is used in average to cover a 2 5m length After application of the product and when the consistency is similar to chewing gum and starts to stick to the spatula Is it possible to delay hardening to better adjust the product to the damaged zone? Agood way to delay hardening is pour a small amount of cleaning solvent bottle N°1 over the resin still under catalysis In this manner it will become more flexible to be accommodated with spatula or with hand always using the gloves provided with the kit Is it possible to apply the product over fabric belts and steel cables? Yes the product can be applied over any type of rubber conveyor belts either with fabric or steel cable base For the latter and when cables are exposed and in sight avoid removing all of the rubber when scraping the surface of the cables Take into account that the product adheres better to rubber than to iron What other type of equipment can be repaired with this product? Other typical applications of the product are impeller coating recovery rubber hopper repair in mining rucks pulley recovery repair of all types of coating of natural or synthetic rubber protection of pieces and equipment exposed to acid environments recovery of rubber lifters in agglomerate drums etc Ineed to apply the resin over a surface and have it drain quickly Is there a way to turn it more liquid? Yes before mixing the resin with the catalyst pour between ½ and up to one bottle of cleaning solvent inside this substance and mix This will turn the resin to a more aqueous state similar to water How can Iobtain a better finish in a damage repaired with the conveyor belt repair kit? Once the resin is applied over the damage and when set and has lost its sticky consistency the repair can be manually adjusted using the cleaning solvent hands must be protected with latex gloves until the desired finish is achieved This allows for elimination of potential surface bubbles or “orange skin” marks that can appear Note These anomalies do not affect the quality of the repair only its appearance What can Ido if the repair has set? There are two options A When the product has just set but still has not reached its maximal hardness and presents a consistency similar to that of cheese the thickness of the repair can be levelled with a knife B Once the resin has already reached a higher hardness level close to the final hardness 85 Shore Ait must be scraped with a grinder and a wire brush to wear down enough of the product to reach the desired thickness What are the main advantages of this product compared to other repair alternatives? This product is distinguished from the competition for • Being a fast repair this product does not take more than 1 hour from the time the repair work starts to the time the equipment is back in operation • Great durability and adherence Higher production • Decrease in production costs • High resistance to impact and exposition to acid • High flexibility up to 300% elongation • Easily mouldable to repair damages in curves or angles • Safe packing and handling for the user • Simple to implement safety measures decreasing risks of accidents • Easy to apply Why is the product not sold in large volumes? Being a fastsetting product if sold in larger containers it would set before being able to apply completely thus losing a great part of the content How can Icontain the resin to repair passthrough damage for example a hole? Nonstick PVC film must be used installing it with impact staples in the lower part of the damage and pour the resin over it until WURTH CONVEYOR BELT REPAIR KIT - FAQ