Vicote F810Blk Provides Enhanced Wear Resistance

United Biscuits has specified Vicote coatings from Victrex to reduce the downtime required for the recoating of a compression roller and doctor blade deployed in its cake manufacturing facility. The compression roller, which is 1,200mm long and 355mm in diameter, is used for pressing biscuit crumbs, an abrasive and sticky food compound. The doctor blade scrapes the excess compound off the roller.

Traditionally, both the roller and the blade were coated with a stainless-steel reinforced fluoropolymer-based coating. The Vicote F810Blk coating is based upon Victrex Peek polymer. Working with plant engineers at United Biscuits, the coater, Metalcraft Plastic Coatings, saw the potential for Vicote coatings to enhance the longevity of the roller and blade.

United Biscuits is now using the FDA-compliant Vicote F810Blk to coat the doctor blade and roller and is said to be benefiting from enhanced wear resistance combined with good release properties. A key benefit of Vicote F810Blk coating in this application was that it is aqueous-based and contains low levels of solvents, which is important for coaters looking to reduce VOC emissions.

Gary Hull, managing director of Metalcraft, said: 'The previous coating was problematic and in line with new product developments an improved surface was required. 'When Vicote F810Blk was applied, a re-coat was not required for six months.' The increased lifecycle and level of service has led to United Biscuits' engineers to consider Vicote coatings for other applications.

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