There are many types of machine within the plastic industry that need to be checked and aligned. On extrusion machines, straightness of pipes, shaft alignment and pointing direction of gearboxes towards pipes all need to be checked. On film blowing machines, centring and parallelism of rolls must be checked. Shaft alignment on pumps and engines must be performed. Fans and other sheave/pulleys aligned. Even the bases of all the machines must be checked regarding straightness/twist.
Advantages of correct alignment
Extends the life of screws
Extends the time between planned services
Reduces the amount of incorrectly produced products, i.e. total amount of granules used
Increases available machine time
Can increase the production speed for certain processes
