Developing first-time supervisors in plastic moulding and extrusion units

A newly promoted in-charge usually got the job because nobody could beat him on the machine. He can hear a worn check ring in the screw and smell degraded resin before it shows as brown streaks. What he has never done is plan a crew, settle a row between a packer and the quality checker, or tell an old friend his work falls short. Those skills can be taught. They stick best when taught on the floor he already knows.

What follows is a working development plan for first-time supervisors in plastic manufacturing. It assumes a busy plant, no training room and charge-hands who cannot leave their lines for days at a stretch.

• Short and frequent beats long and rare. A seventy-five minute slot every second week fits around production. A three-day residential course does not.
• Every module ends on the floor. Each session sets a small assignment, carried out on the supervisor's own shift before the group meets again.
• Use the plant's own cases. Last month's seized ejector plate, last week's overtime squabble, yesterday's near miss at the granulator.
• Charge-hands learn from each other. In-charges from different shifts rarely meet except at the punching machine. Bringing them together is half the value.
• The plant head takes part. If the boss never asks about it, the new leads conclude it is a formality.

Week 1. The shift start: reading the plan, allocating presses and lines, dryer lead times, sequencing mould changes, matching people to machines.
Week 2. Stop, hold or run: when a tool throwing flash or a film bubble full of gels justifies stopping, how to tag a hold, who decides.
Week 3. Instructions that land: short, specific, repeated back, in the crew's mother tongue.
Week 4. Fairness: overtime rotation, night duty, the cooler benches, leave requests and writing each decision down.
Week 5. Rows on the floor: packer against checker, setter against operator, own crew against the contractor's crew.
Week 6. Safety on the shift: stopping an unsafe act, such as a guard propped open, and looking into a near miss without hunting for a culprit.
Week 7. Handover and records: the shift log, settings altered, holds and pending jobs.
Week 8. Coaching a learner: teaching a mould change or a cold start in small pieces.
Week 9. Reporting upward: taking a problem to the production manager with facts and a proposal.
Week 10. Your own time: stepping back from fixing every machine personally.
Weeks 11 and 12. Review, observation and a talk about the coming quarter.

1. 1

   Open with a real case

   Ten minutes on something that happened in the plant this month, told by one of the group.

2. 2

   Teach one idea

   Fifteen minutes on a single tool, such as the four-line handover or the private corrective word.

3. 3

   Rehearse it

   Pairs act out the conversation or the decision, one playing the operator or the production manager.

4. 4

   Set the floor assignment

   One concrete task before the group reconvenes, such as three shift starts with a written allocation, or one corrective conversation held in private.

5. 5

   Log it

   Each in-charge jots the assignment and its outcome in a pocket book, which the facilitator reads at the next meeting.

Once a month, the in-charges from all shifts meet for an hour without the plant head. Each brings one headache. The group suggests what they would try. Night leads gain most, because they work most alone, often with only the security guard and the chiller for company.

Twice in the twelve weeks, the plant head watches each new lead run a shift start and a handover. Afterwards they talk privately for fifteen minutes: one thing done well, one thing to change. A three-question pulse taken from the crew at the outset and at the finish, asked by someone with no stake in the shift, adds the operators' view.

• Resignations and requests to move away from each lead's shift, set against the months before.
• Near-miss reports, where a rise often means the crew trusts the supervisor more.
• How evenly overtime and nights are spread across the shift.
• Leave decisions recorded rather than given on the phone.
• Rejects traced to process settings, and whether handover pages show fewer repeat items.

None of these needs new software. They come from the attendance record, the shift log and a simple tally kept by HR.

GullyHR's manager development programme can run or design this plan around your shift pattern. Extrusion plants have specific notes on growing line supervisors on extrusion lines. How a lead sets timed checks and reviews them with operators appears on the page for performance reviews at blow moulders. The pattern this plan answers is described in supervisors promoted for speed, and the sector overview is on our plastics HR page.