RHL introduces an exciting new development in geotextile calendering

Syncast™ Polyamide Calender Rolls

Richard Hough Limited (RHL) of Bolton, England - a specialist in the manufacture of calender rolls for over 200 years, have recently introduced a high performance polyamide textile calender roll cover to their range. RHL have recently delivered two of the largest polyamide rolls ever produced (see picture). The 240inch face length Syncast™ rolls were supplied to the US to upgrade an existing Geotextile non-woven 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 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. Premium paybacks can be gained due to low cost of the upgrade (no major calender rebuild required), and resultant productivity improvements, less regrind maintenance, higher sheet quality, better efficiency and less scrap.

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.

Roll covers of over 7m (280”) face length and up to 1.25m (50”) diameter can be manufactured utilizing the largest centrifugal casting capacity in the industry. Syncast™ can be fitted as a replacement cover for existing polyamide rolls or supplied as a complete new roll.

RHL will be exhibiting their new centrifugally cast Syncast™ cover at Techtextil North America, Atlanta, Georgia, (April 1-3, 2008), Booth 1753.