Richard Hough Limited (RHL) of Bolton, U.K., a specialist in the manufacture of calender rolls for more than 200 years, has recently introduced a high performance polyamide textile calender roll cover to its range. RHL has recently delivered two of the largest polyamide rolls ever produced. The 240-inch face length Syncast rolls were supplied to the U.S. to upgrade an existing geotextile nonwovens calender.
Roll edge marking and web defects due to roll surface marking have been virtually eliminated, meaning greatly reduced quality defects and significant savings in production costs. Syncast Polyamide covers over existing cotton-filled rolls and revolutionizes geotextile calendering The exciting news for existing geotextile calender users is that Syncast covers can be fitted over existing cotton-filled calender rolls. The largest capacity centrifugal casting facility in the industry allows them the ability to do this.
Syncast is a uniquely elastic, thermoplastic polymer that has been specially developed for textile calender rolls. Syncast roll covers are centrifugally cast at high speed (2000rpm), ensuring the expulsion of all air bubbles and impurities from the cover. Internal stresses are minimized as Syncast is cast at temperatures below the melting point of the polymer. Optimum molecule length gives the Syncast roll cover excellent elasticity and mark recovery, with minimum shape distortion. Syncast roll covers are fully annealed and ultrasonically checked, guaranteeing optimum quality and performance.
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