5 Jun Initial Inspection. The first part of the retreading process is to inspect the tyre to see whether it meets with our stringent quality specifications. Tyre Retreading by Hot Retreading Process. S. Ajeeth Kumar*. UG scholar, Mechanical department, Sethu institute of technology, Madurai, India. There’s a reason STTC only uses MRT—no other inspection and retread process utilizes Michelin new-tire technology, materials, and quality standards to.

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Some applications for retreaded tires are airplanes, racing cars, buses and delivery trucks. Initial Inspection Each tyre received in a retread plant is subjected to a rigorous visual inspection. The injury should be inspected, and then cleaned out with a carbide cutter. This is called the building process.

The granular residue produced during the Buffing process is extracted using high-powered fans and collected in large hoppers ready for recycling. If proecss tyre is not retreaded after its first use, this amount of raw materials would be lost through disposal.

Tyree addition to reducing the amount of raw materials extracted, retread tires also minimize the amount of waste that ends up in landfills. This step is performed to remove all injuries identified during initial inspection and replace the material with structurally sound materials which will give new life to the casing.

To understand this figure, it is equivalent to lining up passenger tires tread to tread from roughly Los Angeles to San Diego or Philadelphia to Washington DC.

Roller Covering Extruder Plant. Archived from the original on Building A uniform layer of Black vulcanizing cement is applied on the crown of the tyre.

Tyre Retreading Business Process | Tyre Remoulding/Retreading Plant Project

The combination of heat, time and pressure ensures that the new rubber is correctly vulcanised, resulting in a tyre with the same tread pattern and depth as the matrix specification for which it was intended.


Complete “Turn Key” Solutions. This test detects any inherent separations within the casing which are impossible to detect with the naked eye. This increases your work place safety and productivity. Some casings are repaired and some are discarded. With comparable tread geometries, the running performance of a precured retread is often better than a hot retread and the same as an equivalent new tyre. This includes a pronounced reduction in the use of oil.

Initial Inspection The first part of the retreading process is to inspect the tyre to see whether it meets with our stringent quality specifications. Modern plants have their casings hoisted by monorail systems.

Therefore the tire is placed into an envelope which presses the precured tread uniformly on the cushion gum and the casing. Even bias-ply carcasses can undergo hot retreading without any problems. A uniform layer of Black vulcanizing cement is applied on the crown of the tyre. The correct size of curing bag and flap is inserted into the tyre according to the tyre size. The technologies employed by our company for the manufacture of our machines always allow us to offer to the market high quality products.

This is the same process as is used in the production of new tyres. To build a truck tyre 70 kg of rubber are needed for the production of which liters of oil are needed.

This page was last processs on 27 Octoberat The first and important step in the process of retreading is the detailed inspection of casing. Arguments in prcess of precure retreading: This method allows more flexibility in tire sizes and it procses the most commonly used method, but results in a seam where the ends of the strip meet.

  IEC 60479-2 PDF

The Department of Transportation requires marking of a “DOTR number” which shows the name of the retreader and when it was retreaded. Cementing and Filling Even in small injuries it is critical that the injury is cleaned and filled.

Both processes start with the inspection of the tire, followed by non-destructive inspection method such as shearography to locate non-visible damage and embedded debris and nails.

This means lower logistics costs and makes the operator more flexible and closer to his customers. Initial Inspection The initial inspection is done to evaluate the casing.

Retreading is applied to casings of spent tires that have been inspected and repaired. This process involves three further thorough examinations: The whole process is computer-controlled to ensure that the correct amount of rubber is applied.

Tire Tread and Tire Track Evidence: This inspection insures that only tyres that meet industry quality standards are allowed to leave the retread plant. Precure retreading requires high-quality carcasses.

The Process of Retreading

The bond between the carcass, the bondung gum and the precured tread is created in an autoclave. The enveloped tyres are then vacuumed out for preparation prior to curing. The purpose of the flap is to increase the life of the curing bag, so that the flap absorbs the heat during the curing process. The problem of tyres disposal is particularly heavy; approx.