What is Tire Curing Bladder?
Curing is the last process
to produce the tire. After building the carcass into green tire,
applying pressure into curing mold for its final shaping. Meanwhile,
supply heat energy to stimulate the chemical reaction between the rubber
compounds and other materials.
O-Ring is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a round cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface.
Curing Process
- A green tire is placed inside a large mold for the curing process. A tire mold is shaped like a monstrous metal clam which opens to reveal a large, flexible balloon called a bladder. The green tire is placed over the bladder and, as the clamshell mold closes, the bladder fills with steam and expands to shape the tire and force the blank tread rubber against the raised interior of the mold. During this curing process, the steam heats the green tire up to 280 degrees. Time in the mold depends on the characteristics desired in the tire.
- After curing is complete, the tire is removed from the mold for cooling and then testing. Each tire is thoroughly inspected for flaws such as bubbles or voids in the rubber of the tread, sidewall, and interior of the tire.
What is O-Ring?
O-Ring is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a round cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface.
The O-ring may be used in static applications or in dynamic applications where there is relative motion between the parts and the O-ring. Dynamic examples include rotating pump shafts and hydraulic cylinder pistons.
O-rings are one of the most common seals used in machine design because they are inexpensive, easy to make, reliable and have simple mounting requirements. They can seal tens of megapascals (thousands of psi) of pressure.
Why Indobladders?
Advantages
Increased Productivity
Longer bladder life
• High-quality thermally conductive compound
• Strict process controls
Increased Productivity
Longer bladder life
• High-quality thermally conductive compound
• Strict process controls
Shorter cure cycles
• Better heat transfer through superior design and special compound
• Better heat transfer through superior design and special compound
Superior curing performance
• Flexible bladder wall
• Consistent quality and uniformity
• Flexible bladder wall
• Consistent quality and uniformity
Exceptional Cost Benefits
• Reduced press downtimes
• Reduced scrap rates
• Reduced press downtimes
• Reduced scrap rates
Better Tire Finish Appearance
• Innovative bladder venting design and surface finish help reduce “trapped air”
• Innovative bladder venting design and surface finish help reduce “trapped air”
Easy Unfolding of New Bladders
• Coating on the inside
• Coating on the inside
Pre-treated bladders
A common problem with new bladders is the adhesion of their surface to the tire. It is standard practice in the industry to apply an arbitrary silicone release agent to reduce this initial tackiness. The first tires cured with these bladders tend to stick to them, shortening bladder life and even pulling them off their clamping, thus increasing overall costs. Rhein Chemie offers semi-permanent and permanent bladder coatings as well as pre-treated bladders. The coatings reduce tire defects and increase overall bladder life, while also eliminating bladder tackiness.
To ensure easy unfolding of the new bladders, all Rhenoshape® bladders are coated on the inside.
To ensure easy unfolding of the new bladders, all Rhenoshape® bladders are coated on the inside.
Bladder fitment form
We have created the bladder fitment form for customers to complete and submit online their local reference person.
For futher detail specification bladder, please click the link below to check their parameter:
