PROCESS FOR PACKAGING HIGH PROFILE PRODUCTS IN A MODIFIED ATMOSPHERE WITH AN UPWARDLY FORMED HEAT SHRINKABLE FILM

摘要

A packaging process is disclosed which includes the steps of providing a tray,providing an upper film which includes a sealantlayer which is sealable to the tray, orienting the film to an orientationratio of from about 6.0:1 to about 16.0:1, positioning a high profileproduct on the tray, extending the upper film above the tray and product,drawing the upper film into a concavity by differential pressure,maintaining the concave shape of the upper film while heating the film,removing gases from the space between the upper film and the trayand product, introducing a desirable gas into the space, releasing the upperfilm such that it shrinkis toward the product and the tray whilethe desirable gas is retained within the space and prevents close contact ofthe film with the lowermost portions of the product, and sealingthe upper film to the flange of the tray, wherein at least the step of heatingthe film shrinks the film, thereby tensioning it onto and acrossthe underlying product. The resultant package of the high profile productprovides an in-store overwrap appearance.