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Retreading

We retread our tires using the Bandag Process

For more than 50 years, Bandag retreads have built a solid reputation based on a commitment to quality, innovation and a focus on improving tire performance and your bottom line. We use this process to provide value to customers and to do our part for the environment.

Denray offers tire retreading, which can significantly increase the lifespan of tires at a fraction of the cost of replacement. Retreading is the most environmentally friendly way to recycle tires.

Bandag Process – Step 1

Bandag Process - Step 1 - Denray Tire - Winnipeg - Manitoba
Initial Inspection – A 396 Spreader
A visual, hands-on inspection from bead to bead, inside and out, is done to find and mark all visible defects.

Bandag Process – Step 2

Bandag Process - Step 2 - Denray Tire - Winnipeg - Manitoba
Initial Inspection – B NDT IIB
An electronic inspection designed to find all “through-the-tire” penetrations in the crown and sidewall areas.

Bandag Process – Step 3

Bandag Process - Step 3 - Denray Tire - Winnipeg - Manitoba
Initial Inspection – C 7400 Shearography
An inspection to determine the conditions within the casing. The casing is subjected to a vacuum while lasers measure surface anomalies (ie: expanding pockets of air). An animated visual of the anomalies aids in deter mining the casing’s condition. At the end of the initial inspection, information like casing condition, casing age and fleet specifications are considered to determine if the tire can be retreaded.

Bandag Process – Step 4

Bandag Process - Step 4 - Denray Tire - Winnipeg - Manitoba
Buffing 8400 buffer
The casing is inflated to operational pressure. The process removes the worn tread surface, trues up the roundness and prepares the surface for a new tread.

Bandag Process – Step 5

Bandag Process - Step 5 - Denray Tire - Winnipeg - Manitoba
Repair
Removing all injuries identified during Initial Inspection and replacing the material with structurally sound materials that will return the casing to a useful life.

Bandag Process – Step 6

Bandag Process - Step 6 - Denray Tire - Winnipeg - Manitoba
Applying Cushion 6400 Extruder
In a one-step process, an uncured bonding layer is extruded onto the prepared casing surface, all skives are filled, and the shoulders are stripped. The casing is now ready for its new tread.

Bandag Process – Step 7

Bandag Process - Step 7 - Denray Tire - Winnipeg - Manitoba
Building 5400 OSM Builder
Automatically applies a new tread so it is straight, centered on the casing, and the end splices match.

Bandag Process – Step 8

Bandag Process - Step 8 - Denray Tire - Winnipeg - Manitoba
Enveloping 1210 Enveloper
Encases the uncured, built tire in an elastic envelope in preparation for curing.

Bandag Process – Step 9

Bandag Process - Step 9 - Denray Tire - Winnipeg - Manitoba
Curing 4150 Chamber
An autoclave-type device that applies heat and pressure, and over time, causes the the bonding layer in the built tire to cure; permanently adhering the new tread to the prepared casing.

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