School Laminating Pouches with Slots

The printed insert should not cover the slot or interfere with the sealed area around it. Leave enough clear laminate between the top of the insert and the slot so the attachment hardware pulls against the laminated film rather than the paper. The document also needs a complete sealed border around its remaining edges. If the insert is too large, the pouch may separate near the slot or allow moisture to reach the paper. Measure the printable area inside the pouch rather than relying only on its outside dimensions. A test badge should be laminated, cooled, attached to the intended clip or lanyard, and handled normally before a larger batch is produced.

Daily-wear badges generally need more rigidity than temporary event passes. A 5 mil pouch can suit light to moderate use while keeping the badge reasonably flexible. A 7 mil or 10 mil pouch may provide greater stiffness for cards handled throughout the day, but the laminator must support the selected thickness. Heavier film also adds weight and may affect how the badge hangs from a clip or reel. The pouch size, slot position, and attachment hardware should be selected as one system. Suitable badge reels should hold the finished badge securely without placing excessive strain on the slot.

Most thermal slotted pouches work in a standard pouch laminator that supports their width and thickness. The slot itself does not require a special heating process. Small badge pouches can feed unevenly in a wide machine, so a carrier may be recommended to keep them straight and prevent adhesive from contacting the rollers. Feed the pouch with the factory-sealed edge first unless the machine instructions state otherwise. Never feed the slotted edge first merely because it will become the top of the badge. Allow the finished pouch to cool flat before attaching a clip or lanyard, since pulling on the slot while the laminate is still warm may weaken it.

Post-lamination slot punching may be suitable when a school already owns standard pouches, needs an unusual slot position, or produces several badge layouts from the same pouch size. The finished laminate must leave enough clear border for the slot to pass through sealed film without cutting into the paper insert. Placing the slot too close to an edge can weaken the badge, while cutting into the document can break the moisture-resistant seal. A dedicated slot punch should create a clean opening sized for the selected clips, lanyards, or badge reels. Test the position and hardware before punching an entire batch.