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Apticote Coatings Eliminate the need For Expensive Release Agents in Tyre Moulding Applications

Poeton Industries Limited, a world leader in surface coating technology, has developed a number of specialised coatings in its Apticote range to eliminate the need for release agents in tyre moulding applications and increase the life of the mould tool itself.

A spokesman for the company says replacing conventional silicone spray release agents with a specialised coating provides considerable cost and operational benefits. The high cost of release agents is eliminated in the production of tyres with normal tread forms and only required where the tread form is very deep, for example on snow tyres.

The health and safety implications for the control of hazardous substances such as silicone spray in the tyre manufacturing environment, are also greatly reduced. Carry-over of release agent onto the product is also eliminated and the working life of the mould can be extended significantly, simply by re-coating.

Coatings such as Apticote 200, 350, 450 and 460, which are already used extensively for tyre moulding applications, have excellent release properties and are extremely resistant to the high temperatures and aggressive materials used in tyre manufacture.

For the production of larger tyres, where sidewall plates are used, special Apticote nickel/chrome duplex coatings have been developed with exceptional wear and corrosion resistance, to reduce the pitting corrosion caused by heat and carbon gases.

Coatings can also be modified to provide the gloss or matt finishes required for modern tyres

Apticote 200, an inert low-friction copolymer coating, combines excellent wear properties with permanent dry lubricity to extend mould life and eliminate the need for expensive chemical mould release agents. Throughput and machine running speeds are both increased and downtime is greatly reduced as tools need changing less frequently and many cleaning operations are eradicated.

Apticote 200 can operate at temperature up to +285ºC and is chemical resistant.

Apticote 450 is a self-lubricated, nickel-alloy composite that provides a unique combination of extremely low friction and high load-carrying capacity. The uniform dispersion of polymer within the coating produces superior low friction qualities throughout the life of the mould, making it ideal for unlubricated moulding applications.

Apticote 460M is one of a family of electroless nickel composites. It has been developed for rubber and polymer moulding applications requiring permanent mould release properties. Apticote 460A is designed to provide excellent mould release where maximum chemical and abrasion resistance is also required.

Both offer the opportunity to substantially reduce material costs by coating low cost materials to meet the needs of high performance tyre moulding applications. For example, moulds manufactured from low carbon steel and coated with Apticote 460 can be used to replace more expensive alloy moulds with no loss of performance. And costs are further reduced because moulds can be machined from more workable and readily available metals.

Apticote 460 achieves four times the hardness of electroless nickel in Tabor Abrasor Tests, outperforms hard chrome in dry running applications and will operate at temperatures up to +260ºC.

To discuss sample processing or technical advice for your next tyre moulding application call Poeton Industries now on 01452 300500.

For further information contact Rowenna Poeton,
Poeton Industries Limited, Eastern Avenue, Gloucester GL4 3DN
Tel: 01452 300500 Fax: 01452 300050 Email: rowennapoeton@poeton.co.uk

For press information contact Dennis Cantillion,
Cantillion King, 16 The Cornhill, Stroud, Gloucestershire, GL5 1AJ
Tel: 01453 755551 Fax: 01453 751525 E-mail: dennis@cka.co.uk

14 April 2010

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