Tyre Retreading Process includes:
Collection of Casings
Section Repairs & Skiving
Cementing & Filling
Building Tread Rubber
a. Enveloping & Rim Mounting or b. Double Envelope System
Curing by Chamber
Final Inspection & Painting
1. Collection of Casings
Worn tyres are collected to select suitable casings for tyre
2. Initial Inspection
Each tyre received in a retread plant is subjected to a rigorous
visual inspection. Inspectors are assisted by the use of
non-destructive sophisticated MELION inspection machine.
3. Buffing After inspection
The tyre's old tread is mechanically removed on high speed
buffers. MELION's buffers are extremely accurate and will remove
the proper amount of old rubber while turning the tyre to an exact
specified diameter and radius.
4. Section Repairs & Skiving
With advances in state-of-the-art repair materials and repair
methods, many of these tyres can be routinely repaired and in most
cases can be retreaded when the original tread is worn off. The
repair station is where any surface injury is treated using
effective material and tools for grinding and patching.
5. Cementing and Filling
Even in small injuries it is critical that the injury is cleaned
and filled. If this is not done, severe rust, separation and steel
cable looseness could take tyre out of service. The injury should
be inspected, and then cleaned out with a carbide cutter. After
cementing the injury, a vulcanizing rubber stem should be applied
to "fill" the injury. This would create a permanent repair that
maximizes tyre life.
With MELION designed-and-built spray booth, your cementing
operation can be executed in a clean, efficient &
environmentally responsible manner.
6. Building Tread Rubber
In the pre-cure system, the tread rubber has already been
vulcanized with the new tread pattern design. The buffed tyre needs
a thin layer of cushion gum to be wrapped around its crown area.
The pre-cured tread rubber is then applied with the building
machine. This is called the building process.
7.a) Enveloping & Rim Mounting
The built tyres are then mounted with envelops and rims to prepare
them for curing.
b) or Double Envelope System
For enveloping, tyres are first fitted an outer envelope at the
envelope-mounting table before the inner envelope is fitted into
them. The enveloped tyres are then vacuumed out for preparation
prior to curing. Modern plants have their casings hoisted by
monorail systems. With professional planning from MELION engineers,
you can be assured of workstations designed to maximize output and
8. Curing by Chamber
The tyre is then placed in a curing chamber and the pre-cured tread
becomes adhered to the tyre through a vulcanizing process.
Our wide engineering capabilities and experience enable MELION to
build chambers to suit our clients' different preferences for size,
steam heated, electric heated, or double heating system,
semi-automatic and automatic chambers.
The monorail & hook system increases productivity by cutting
down on chances of casings contamination and allows for faster
loading and unloading of tyres. This increases your work place
safety and productivity.
9. Final Inspection & Painting
The retreaded tyre is subjected to a final inspection. This
inspection insures that only tyres that meet industry quality
standards are allowed to leave the retread plant. All retreaded
tyres are encouraged to be returned with the sidewalls painted
using a light coat of black tyre paint.
The above is the whole process flow of MELION Tyre Retreading
Equipment,should you have any question or inquiry regarding our
products and company,please feel free to contact us.We promise to
offer you our best service with best quality products.