Get a grip on screw slippage

Some of the factors that need to be consider, to prevent the problem of screw slippage in the barrel of the injection molding machine. Screw slippage occurs in the barrel of the injection molding machine, when it has difficulty in picking up material from the feed throat, or is unable to develop sufficient tack to convey the material through the barrel. The phenomena also occurs during the plasticizing phase, when the screw rotates and moves back in the barrel, to convey material along the screw and accumulate the next shot. Screw slippage occurs due to high backpressure, significantly hot, or cold rear barrel section, a worn barrel, shallow feed section on the screw, and improper hopper design. Experts state that proper temperature and backpressure settings can be helpful in preventing the problem of screw slippage in the barrel of the injection molding machine.