The ways of Raise Blown Film Productivity
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First,Streamline job schedules.

Material changes can be very costly, especially in coextrusion. More effective scheduling saves time, money, and purging compound. Try to schedule jobs in a sequence that minimizes changing resins, web width, or film gauge. This can't always be done because of customer demands, but start each day with a short planning session to optimize job order. Ideally, you should follow soft materials such as LDPE with a tougher, stiffer material such as HDPE. But if you're extruding the tough, stiff material and the next job requires a much softer grade, use a transition resin like fractional-melt LDPE to flush the barrel and screw. Save the cost of purging compound for tougher jobs or for when you have gel problems or carbonization.

Second ,Identify all material-conveying lines.

Resin-feed lines from silos, daybins, and gaylords should be clearly identified for operators and technicians. The cost of material cross-contamination can be a major blow to the bottom line, costing you wasted production time and materials.

Third,Tap your suppliers for training.

Properly trained people are more important to your goal of increasing productivity than are either raw materials or equipment. With all the changes occurring in blown film technology today, your people can never have enough training. A good way to find inexpensive assistance is to start with your equipment and resin suppliers. Many of them will assist in everything from conducting one-day seminars at your site to advising how to implement an ISO 9000 certification program.

Fourth,Keep material inventory accurate and up to date.

How many times has your manufacturing plant started on an order and run short of a certain material? Even once is too much. Before set-up or even before scheduling, verify that the correct amounts of material are on hand to complete the job.