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23 C O N V E Y O R B E L T R E P A I R K I Tcovering the whole area Wait until the setting of the substance 45 minutes approximately and then remove the film by hand staples will come off with the film In the case of passthrough damages or rips a hole Where should Iapply the cleaning solvent and primer? In this type of situation it is advised to apply these products on both surfaces top impact surface of the belt and bottom returning surface of the belt Once the primer is dry place the film to contain the resin At what temperature should Istore this product and what should Ido if the container is exposed to low temperatures? The product must be stored at temperatures between 15°Cand 35°C If exposed to lower temperatures the resin can tend to crystallize turning its mix with the catalyst and later application difficult To turn the substance back to a liquid state the container can be heated in a microwave for 1 minute put it close to a heat source for example a halogen bulb or take the resin out of the container and expose it directly to sunlight Under what storage conditions could the resin harden? The product tends to harden when stored at temperatures below 10° Cfor prolonged periods of time It is recommended the storage at temperatures between 15°Cand 35°C May the product be applied on wet surfaces? No the surface must always be dry clean and free of impurities If the chosen area is wet it must be dried with a hot air gun If humidity is superficial the scraping process will suffice to remove the first layer of rubber that is wet Once the resin is mixed with the catalyst bottle N°3 May Isave the remaining product and use it later? No once the chemical reaction starts the whole resin will harden What should Ido if the product does not properly set or if the expected hardness is not reached? If this happens it means that the mix was not performed in the correct ratio i e 1 1 Thus the chemical reaction will not be appropriate and the final product will not set as required Is there any way to accelerate the resin setting? If you wish to accelerate the process a hot air gun can be used to elevate the temperature of the substance once applied to the damage and the setting has already started This alternative is useful when performing a repair in extreme cold conditions where setting is slower Scraping the surface the area was contaminated with dust Is it necessary to go back to previous steps? Yes if the surface is contaminated in any step of preparation it must be returned to the step of application of cleaning solvent and continue with the process normally Note characteristic environmental dust in mining sites does not affect repair only the dust on the surface which contaminates the zone Iopened many resin containers for one repair and did not use all of them Can they be saved for later use? Yes as long as they have not been mixed with the catalyst Being plastic containers they can be closed and stored in their original packing to be used in future repairs What safety measures should Ihave when applying the product? Always check the Safety Data Sheet before use DO NOT SMOKE or use flame sources near this type of products What is the function of the primer? This product generates a reaction on the surface opening the pores of the rubber belt for 10 minutes time in which the resin already mixed with the catalyst should be applied The idea is to produce a mechanical bond between this substance and the rubber once the primer effect ends It is essential to consider that the resin must be applied in this term in order to achieve the desired effect If for any reason this time is passed another layer of primer must be applied before using the resin Iwant to repair a longitudinal damage of 50m long by 10cm wide Can Iapply the cleaning solvent and primer in all the extension and then gradually apply the mixed resins? No Remember that the primer effect lasts for 10 minutes once applied In a repair of this features it is advised to prepare the surface in extensions of 5 to 10 m to ensure that this period of time is not exceeded If time and operation of the equipment cause some wear on the repair What procedure should Ifollow? If wear is to be repaired the same procedure for the case of recovery or repair of natural or synthetic rubber must be followed i e scrape with a grinder and continue with the application steps Can Imake a hot vulcanization on an area previously repaired with the product? No To perform this type of work the residues of the product on the surface must be removed Can Iapply the product to belts operating at high temperatures? Yes the product has been successfully used in cement conveyor belts operating with peaks of 140°C Can this product be used in coatings or conveyor belts exposed to acid environments? Yes this type of product resists well in acid environments Copper mining industries have successfully applied the product in the recovery of lifters in agglomerate drums