Mobiltech

Tires

A tire is the component of a wheel that enables smooth vehicle performance. It is the only part of a car which touches the ground and consequently one of the most important piece of a vehicle requiring particular attention.

Tires are used in automotive and industrial applications. Automotive tires, both used in OEM and aftermarket, are used for cars, motorcycles, trucks, busses, bicycles and airplanes. Industrial tires are applied in agricultural and construction vehicles.

Key elements of a tire are the visible treads and sidewalls consisting of natural and synthetic rubber, the carcass underneath the tread and the bead connecting the tire to the rim. The carcass as key scaffold provides the shape and strength to the tire. It is made of steel cords and/or fabric layers embedded into rubber as reinforced material. The construction of these cords in the carcass determine the strength of the tire and contributes to resist any puncture or damage from outside.

 

OLBOPLAST® yarn was developed and patented in the 1970s by Olbo Industrietextilien. It is used as weft material for tire cord fabrics applied in carcasses of radial tires. Tire cord fabrics serve as textile reinforcing material within the tires.

OLBOPLAST® is a two-component yarn consisting of an elastic core and a cover. The core is made of a highly stretchable nylon material; the cover is made out of cotton. OLBOPLAST® ensures that tire cords can be easily woven, treated, calendared and finished.

During the tire cord fabric production, the stable cotton cover allows as weft or filling yarn in transverse direction an uniform allocation of the warp yarns in longitudinal direction. During curing of a raw tire to form its final tire shape, the high elastic nylon core guarantees equal density of the single cords in the carcass.

Within various production steps connected to manufacturing tires, auxiliary materials are applied. Liner fabrics are important auxiliary materials. They are used for carrying other materials or goods through fabric-, wire- and rubber calendaring machines. Manufacturers of cord fabrics and steel cords use liner fabrics as lead liners to pull processed goods into the calander.

We offer liners for different applications in various colors. Colored liners can be identified easily and can be allocated to specific processes. Liners are available as greige (untreated) or as treated fabrics. Typical treatments are:
• Heat-setting ensures that the liner fabric stays in its original shape when it is exposed to heat during further processing of tire products.
• Calendering is a mechanical process that makes the fabric surface smoother and the fabric gets a stabilized and dense structure.
• Rubber-repellent treatments are applied if rubber products should not adhere to the fabric.

Tires have to withstand particular strain at the bead as it is the connecting part of the tire to the rim. To achieve the required stability, a chafer fabric is wrapped around the bead wire section of the tire. The goal is to obtain an abrasion-resistant layer between the rubber and the rim. The chafer fabric protects the tire from damages during assembling or removal from the rim.

In addition, special chafer fabric types ensure that pressurized air stays inside tubeless tires and does not leak.

The appropriate RFL treatment provides excellent adhesion to rubber, e.g. to CR, NBR, HNBR and EPDM compounds.