Retreading Tires Process

Retreading Tires Process

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Retreading Process: Step 1

Initial Inspection

Before any equipment is turned on, we use our eyes. Trained Bandag specialists perform a visual, hands-on inspection from bead to bead. It covers both inside and out, and it’s done in order to find and mark all visible injuries. Factors like fleet specs are also considered to decide if the tire is suitable for retreading.

Retreading Process: Step 2
Electrical Inspection

Now it’s time to dig deeper with an in-depth, electronic inspection. It’s designed to find all “through-the-tire” penetrations in the crown and sidewall areas that may not be visible to the naked eye. Actual damage can be closely evaluated.



Retreading Process: Step 3
Shearography

This determines conditions within the casing, subjecting it to a vacuum while lasers measure surface anomalies. An animated visual of the anomalies determines casing condition.



Retreading Process: Step 4
Buffing

At this stage, the casing is inflated to its operational shape. The process removes the worn tread surface, trues up the roundness and prepares the surface for a new tread.



Retreading Process: Step 5
Repair

It’s time for a little surgery. Any damaged material identified during initial inspection is removed and repairs are made, essentially returning the casing to a useful life.



Retreading Process: Step 6
Applying Cushion

An uncured bonding layer is extruded onto the prepared casing surface and all skives are filled. The casing is ready for a new tread.



Retreading Process: Step 7
Building

A new tread is automatically applied, with attention to precise detail. The tread must be straight and perfectly centered on the casing.



Retreading Process: Step 8
Enveloping

The assembled but uncured tire is encased in an elastic envelope and prepared for curing. Hold on to your seat, we’re close to being done now.



Retreading Process: Step 9
Curing

The curing chamber is an autoclave-type device that applies heat and pressure. Over time it causes the bonding layer in the tire to cure and permanently adhere the new tread to the prepared casing.




Retreading Process: Step 10
Final Inspection

A visual, hands-on inspection is repeated to ensure our quality specifications are met.

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Retreading Tire Process

Retreading Tire Process

Retreading Tire Process | Retread Process

Our retread process starts with a thorough initial inspection of casings for cuts, punctures, air pockets and other damage, and casings are repaired if necessary. 

 

Then casings are scanned for separations that might affect performance, and the tires are buffed to remove the old, worn tread design. Damaged materials are removed and final repairs are made. New tread rubber is bonded to the casing at low temperatures to avoid stress and distortion. Then a final inspection is performed to ensure the tire is in perfect operating condition.

 A PDF of the Retread Process is available by clicking here

 

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