TIRE RETREADING PROCESS

   INSPECTION

Carried out by an expert operator during the Initial Inspection, which analyzes the casing conditions to reject or approve it to be retreaded.

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2     BUFFING

Performed by qualified operator the retreading plant’s Buffing area to ensure that the tire profile meets specifications of Crown width, Radius and texture . Buffing involves removing any remaining old rubber from the crown surface and is carried out by qualified and experienced staff using automatic or semi-automatic buffers.

   SKIVING

Removal of any damage found during and after the buffing process. Damaged areas are analyzed, and a determination is made as to whether or not the casing requires to remove small injures . Following the removal of any damage found, the casing is thoroughly cleaned before proceeding to the next step.

4    REPAIR

Areas of the casing that were damaged are repaired using appropriate technique, tools and patches or reinforcement materials designed specifically for Tires and type of the injury.

   FILLING THE INJURY

Process of filling all injuries with extruded rubber rope or filler using a hand extruder under specific pressure and temperature conditions. Injuries are filled in such a manner to avoid leaving air trapped or imperfections that could ultimately affect the functionality of the tire.

6    CEMENTING

Once all injuries have been repaired, cement is applied to the buffed and repaired casing in preparation for the application of the new tread.

   PREPARING THE TREAD

An appropriate PRE-Q tread pattern is selected based on customer requirements and the type of service in which the tire is used. The tread is cut according to the perimeter dimensions of the tire and a layer of cushion gum is applied to either the casing or the tread, depending on the retreading system used.

8 BUILDING

The tread is then placed over the crown of the tire casing and is stitched to the casing using high-tech building machines.

  TIRE PREPARATION

Following tread application, build tires are prepared for curing based on the type of system to be used: rimless tires are fitted with an ring or inner and an outer envelope, and rimmed tires (with rim, flap and inner tube) are fitted with an outer envelope, curing rim and protector for the vulcanization process using the specifications of the GALGO PRE-Q system.

10    CURING

Under specific temperature, pressure, and time conditions, vulcanization of the GALGO PRE-Q treads is achieved through the curing process using curing chambers with hot air, heated by indirect steam, electrical resistance, and/or thermal fluids.

11    FINAL INSPECTION

After the curing process, the tire is examined to ensure that the tread and all repairs are properly cured and that the tire does not show any separation . This process is critical to ensure that tires meet the strictest standards for tire structure, application of tread, cushion gum and patches, and overall appearance. Once the tires pass final inspection, they move on to the final finishing stage.