Laser Perforation and Scoring
Precision Laser Perforation for Flexible Films
Perftech’s laser perforation and scoring technology provides precise, non-contact processing of flexible films and other roll-fed materials. Our laser system can create custom perforation patterns and scores in multiple directions with precise control of position and pattern. Because laser processing requires no physical tooling, designs can be changed quickly without the tooling fabrication required by mechanical perforation methods.
Common Laser Perforation Applications
- Fresh-cut produce in bags or trays with lidding: Customized perforation patterns help produce optimal headspace for shelf-life extension of perishable fruits and vegetables. This keeps the packaged produce fresher for longer by delaying the ripening process and reducing ethylene production.
- Steam release for microwave-ready packaging: Customized patterns ensure quick and uniform microwave cooking of frozen vegetables and ready-to-eat meals. The perforations allow controlled release of the steam for a perfect cooking result.
- High-altitude burst elimination: Perforation lets the headspace in sealed packages match the changing atmospheric pressure at altitude without compromising shelf life. A single micron perforation, invisible to the eye, can allow the headspace inside the package to equalize to the surrounding atmospheric pressure to maintain seal integrity.
- Venting of excess air in bulk packaging: High-speed filling and case-packing lines cannot slow down for filled bags with excess air to dissipate. Perforation enables rapid deflation time. Adding perforation can allow the package to delate rapidly, optimizing case packing.
Laser perforation can be continuous, applied in specific zones, or registered precisely to the printed package. Registered perforation allows each hole or perforation pattern to be positioned in the same location on every package printed across the web. Because laser is a non-contact process, patterns can be changed without physical tooling, making it especially useful for applications requiring precise placement, customized zones or registered perforation.
Laser perforation is particularly effective when perforations are concentrated in defined areas or patterns in the machine direction. For applications requiring higher perforation densities across the full web width, Perftech can evaluate needle or thermal perforation as alternative technologies.
Laser scoring for easy open and peel/reseal
Laser scoring creates controlled score lines in flexible packaging to support easy-open, peel/reseal and other package-opening features. Scores can be produced in the machine direction, across the web, or as custom contours registered to package features such as seals and zippers. Because laser scoring requires no physical tooling, score patterns can be customized to the specific package design.
For many peel/reseal and easy-open applications, laser scoring provides a flexible alternative to traditional rotary die cutting. Eliminating dedicated tooling can reduce up-front costs and makes it easier to accommodate different score patterns or package designs.
Let’s get started on your solution
Contact us at (630) 554-0010 or Contact us today to discuss your film, package design and performance requirements.
