Plastic packaging print and colour versions explained

A customer orders a printed pouch. To you, that is not one item. It is a film structure, a thickness, a resin grade, a base colour and a set of print plates, each with its own revision.

A new barcode changes the artwork. The plate changes and the old stock is wrong, yet the order still reads as the same bag, with nothing on it to warn the planner.

That gap is where wrong shipments begin, because the order, the job card and the packing slip all show the same short name and nobody sees what differs.

Think of the version as a recipe. The planner, the press operator and the dispatcher all read it, and if any of them reads a different one the goods go out wrong.

Give each combination its own code and keep the readable name beside it, because a typo in free text creates a phantom item. Colours and grades come from a fixed picklist, so nobody can invent a new spelling for cool white and quietly create a second item.

Carelessness is rarely the cause. People pick what the label says. The real causes are a rack of reels with similar labels, a plate reused after a barcode change, or an order entered against last year’s code.

Colour is a common culprit. Ask any press operator. A white that is slightly cooler is still white on the order, yet it looks wrong beside last month’s stock on the customer’s shelf. Grade is another cause. A substitute resin may run well on the extruder, seal cleanly and still fail the customer’s drop test after the pallets have already left the dock.

Stock suffers as well. Reels of old and new artwork land in one bin, and the oldest gets picked first, since first in first out is the rule the warehouse trusts.

Make the version, not the item name, the thing that stock, orders and job cards point to, so every document speaks about the same exact product. Each reel carries a version code and a lot number, and each job card prints with the plate revision in large type where the operator cannot miss it.

Lock a version once approved. Changes create a new version that links back to the old one, with the reason noted, so the planner can see which orders still reference the old plate. Old reels get held, reworked or scrapped.

Block a job from starting if the plate revision on the job card does not match the revision on the approved version.

List the last five wrong print or colour complaints, trace each one back and note which attribute was mixed up, whether film, resin, shade or plate revision. Those fields go into the code.

Then relabel active stock by version code. Pallet labels should show the plate revision in large type, readable from a forklift seat, so the dispatcher can check it without climbing down. The label walk is dull. It pays back quickly.

Spend an hour in the artwork approval folder as well, because plate revisions often live only in email attachments that nobody has copied into the job records. Finally train the dispatcher to check the packing slip version against the customer’s order, not the item name, and to hold any pallet whose codes differ. It waits on the dock. Planning confirms the change first.