Metallized PET Film Laminate Curl Control

Metallized PET Film laminates may curl after curing or slitting when web tension, adhesive application and layer shrinkage are unbalanced. Curl can disrupt registration, feeding and seal alignment even when barrier performance remains acceptable.

A Metallized Film Supplier needs the complete structure, film gauges, machine direction, coat weight and cure profile. These details help separate a substrate issue from a lamination or storage effect.

Record Curl Direction

Note which layer sits inside the curl and whether the shape changes across the web. Mark machine and transverse directions on retained samples before cutting.

Compare Process Stages

Inspect the web after lamination, after cure and after slitting. Record unwind and rewind tension, nip pressure, oven conditions and roll hardness. Change one variable at a time.

Test Pouch-Making Stability

Run the cured laminate through the intended bag line and check tracking, registration and seals. Send Cailong the structure, settings, curl map and samples.