Flat-top conveyor chains with very low friction are being made by molding individual flights from Delrin® acetal resin with silicone oil added during the molding process. Three grades of conveyor flights with coefficients of friction ranging from 0.18 to 0.12 are available. They are color-coded for easy identification.
The flights are molded in several designs for assembly of side flexing and straight running chains. Snap-on flights to assemble onto roller chains are also available.
Less tipping, wear, noise. Low friction reduces the risk of product tipping, especially on accumulation conveyors, cuts conveyor component wear and holds down noise.
Permanent lubricity. The silicone oil is melt-blended with Delrin® during the molding process. It does not bleed out, according to Rainbow/RAM.
Durability. Thanks to the superior fatigue strength of Delrin®, the chains withstand repeated "jerk loads" produced when conveyors start with product already on the line. The high tensile strength of Delrin® enables the chains to carry heavy loads.
Resists harsh chemicals. Delrin® is resistant to typical cleaning solutions and other agents used to wash down conveyor lines.
Materials Selected and Why
Delrin® compounded with a silicone oil concentrate from DuPont, meets requirements for low friction, wear resistance, high strength, fatigue endurance, dimensional stability and consistent molding productivity.