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Laser scoring (easy open)
Also known as: laser score, laser scoring, laser perforation, easy-open line, laser tear line
Laser scoring cuts partway into one film layer so a pouch tears open cleanly along a controlled, straight line.
Laser scoring uses a laser beam to cut partway into one or more layers of a laminated film, without piercing the pack. It creates a controlled line along which the pouch tears cleanly, which is why it is often called an easy-open feature.
Why it is used
Tough laminates, especially those containing nylon or thick PE, resist tearing in a straight line. Without guidance, a tear can wander, spill product or run below the zipper. Scoring the outer layer, usually PET or BOPP, makes the tear follow the intended path.
Applications
Straight opening lines above a zipper, steam-vent or opening areas on microwaveable packs, ready meals and retort pouches, coffee and snack bags, and lidding films.
Benefits
- Predictable, straight opening.
- Barrier and sealant layers stay intact when the laser is set correctly.
- Curved or custom opening paths are possible.
Points to watch
Laser power and focus must be tuned to the specific laminate so the barrier is not damaged. A score line is usually combined with a tear notch that starts the tear. Test sample pouches for opening and leak-tightness before production. Laser scoring does not change the pack outline; that is the job of a die-cut shaped pouch.
Frequently asked
Does laser scoring make holes in the pouch?
No. When set correctly it only cuts partway into the outer layer, leaving the barrier and seal layers intact.
What is the difference between a laser score and a tear notch?
A tear notch starts the tear at the edge, while a laser score guides it along a set line. They are usually used together.
Related terms
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