Metallized PET Film for Window Pouches

Metallized PET Film with defined clear and metallized zones can create a product-viewing window without adding a separate cut-out. The design succeeds only when registration, barrier coverage and pouch geometry are controlled together.

A Metallized Film Supplier needs the artwork, repeat length, web width, slit plan and finished-pouch drawing. The clear window must stay away from critical barrier and seal areas after printing, lamination and bag making.

Fix the Functional Zones

Mark the viewing window, print registration marks, seals, folds and product-contact area. Confirm which region requires light protection and which region may remain transparent.

Control Registration through Conversion

Web stretch, tension and slitting error can shift the window. Measure position at the start, middle and end of the roll, then repeat after lamination and pouch forming.

Validate the Finished Package

Check window position, seal integrity, appearance and shelf-life performance with the real product. Send Cailong the drawing, tolerance, structure, line settings and rejected samples.