|
Pricefitters offers spiral grooving as one of several methods for providing an irregular surface on the internal walls of resin conveying lines in order to minimize the development of streamers, angel hair, and snakeskins. During dilute phase conveying, resin pellets travel at high speeds through the conveying lines. This high rate of speed can result in the pellet softening due to heat developed from the friction between resin pellets, the tubing wall and the conveying air. The speed at which the pellets travel can also result in the generation of dust, fines and fluff as the pellet bangs into and off of the tubing walls.
Spiral grooving, or rifling, increases the air turbulence within the conveying tube with the result of keeping the resin pellet suspended in the air instead of making contact with the tubing wall. Spiral grooving is most effective as a surface treatment when applied to long straight tubing runs where the pellet has a tendency to saltate out of the air stream and slide along the wall of the tube. PriceFitters also offers shot peening and porcelain lining treatments.
|