Belting Glossary - Conveyor Belt Terms and Meanings
There are currently 34 names in this directory beginning with the letter D.
Data code
Any combination of numbers, letters, symbols, or other methods used by a manufacturer to identify the date of manufacture.
Deflector
A board or plate at an angle across the path of a belt traveling over a flat surface to transfer material off the belt.
Denier
A yarn sizing system for continuous filament synthetic fibers on the basis of the weight in grams of 9000 meters of the yarn.
Density
The ratio of the mass of a body to its volume or the mass per unit volume of the substance. For ordinary practical purposes, density and specific gravity may be regarded as equivalent.
Diameter
The length of a straight line from the periphery passing through the geometric center to the other side of the periphery of an object.
Dielectric strength
The measure of electric potential strength of a rubber product. Measure of its ability as an insulating compound to resist passage of a disruptive discharge produced by an electric stress. Measured as volts per mil of thickness.
Dip coat
A thin coat on a surface obtained by dipping the material to be coated into the coating materials.
Double plate bolt fastener
Two ends of belting joined together with a plate on both sides across both ends of the joint.
Drive factor
A numerical factor used for calculating the belt minimum slack side tension required for a given driving condition and or configuration.
Drive snubbed pulley
An non-driven pulley located close to the drive pulley to provide a greater arc of contact around the drive pulley.
Drive-on hinged fastener
Two ends of belting joined together with a pre-packaged fastener assembly having prongs for driving through the belt end.
Drive-on plate fastener
Two ends of belting joined with a single plate, across the top cover joint, with rivets or sharp teeth clinched over on the bottom cover side of the belting.
Drop ply
The omission of a reinforcing ply for a specified distance from each edge. Usually the bottom or next to bottom ply in flat conveyor belting.
Duck
A tern applied to a wide range of medium and heavyweight fabrics, commonly made of cotton, including the heaviest and strongest of all, single-woven fabrics. There are three main types number duck, army-type duck and flat duck.
Durometer hardness
An arbitrary numerical value which measures the resistance to penetration of the indentor point of the durometer. Value may be taken immediately or after a very short specified time.
Dutchman
A short section of belting mechanically spliced into a length of belting and removed when the take-up allowance is exceeded.