They can lead to inconsistent peel force, delamination of lidstock during peeling, and occasional lidstock tearing.
All three problems were surfacing in Schick’s Xtreme3 disposable razor packaging operation—until a recent switch to a lidding film from Curwood that consistently adheres to and peels from a thermoformed tray that holds the razors.
From the outside-in, Curwood’s 2.75-mil adhesive-lamination contains 48-ga polyester that’s reverse-printed flexographically in six to eight colors/14# clear polyethylene/2-mil EZ Peel® polyester sealant. Unlike some materials, the multilayer inner sealant layer is not dependent on machine temperature and dwell time, so there’s no inconsistent peeling, according to Curwood. Curwood ships rollstock to Schick’s plant in Milford, CT.
There it’s fed to the thermoforming/filling/
sealing equipment on which the razors are packed. The clear trays are reportedly made of a monolayer polyester. The clear tray and lidding film permit consumers to easily view the razors in the pack.
According to Curwood, the lidstock was tested on Schick’s production line, where it has resulted in efficiency gains by decreasing downtime, reducing start-up waste, and creating the potential for increased line speeds.
