tire reinforcements

TIRE REINFORCEMENTSTE 552

Nonwoven Product Development

Neslihan Yagmur

What is Tire?

• A tire is a ring-shaped covering that fits around a wheel's rim to protect it and enable better vehicle performance.

Duties of Tire

• Carry the burden of car

• Follow the direction given by the Steering

• give very good traction on the road, which keeps cars from sliding

• offer a smooth, comfortable ride

Tire Types

• Some examples;

– Type P

• passenger vehicle tire

– Type LT

• light truck

– Type T

• temporary, or spare tire

Layers of Tire

1) Airtight synthetic rubber liner

2) Carcass ply

3) Beads

4) Sidewall

5) Crown Plies

6) Tread

1. Airtight synthetic rubber liner

• Keeps air inside the tire

• Check your tires' air pressure monthly, as some air loss occurs over time

2. Carcass ply

• The carcass ply is comprised of thin textile fiber cables that are bonded into the rubber

• These fiber cables are largely responsible for determining the strength of the tire.

2. Carcass ply “Nonwoven Tech”


• Non-woven metal fibers entangled with one another

• Pores filled with rubber

• Metal fibers contains steel fibers with natural or synthetic fibers

• Generally polyester fibersUnvulcanized Rubber Layer

Unvulcanized Rubber Layer

Non-woven Layer

Materials for Non-woven Ply

• Metallic:– Copper

– Nickel

– Iron

– Steel

• Fibers:– Polyester

– Carbon fiber*

– Polyethylene terephthalate*


• Ratio of fiber:rubber; 80:20

• Thickness 1 to 5 mm;

– preferably 2-3 mm

• Fiber lenght 20-100 (40-60)* mm

• Fiber diameter 6-40 denier

3. Beads

• The beads are responsible for clamping the tire firmly against the rim of the wheel.

4. Sidewall

• giving the tire its height

• protects the tire against impacts with curbs and other objects

• contains all the markings which tell youinformation about the tire;

– speed rating

– load rating

– tire dimensions

5. Crown Plies

• Crown plies provide the rigid base for the tread

• provide centrifugal and lateral rigidity to the tire

• allowing the tire to flex sufficiently for a comfortable ride.

6. Tread

• The tread is designed to provide traction in a variety of conditions.

• Good tread design provides also resist to;

– wear

– Abrasion

– heat

REFERENCES

• http://www.tirebuyer.com/education/tire-anatomy-and-construction

• http://en.wikipedia.org/wiki/Tire

• U.S. Patent 3895665

• Rowell, J. D., Tire Tread Seperation, Rowell & Bennett

THANK YOU FOR YOUR ATTENTION

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