Patent ID: 6408598
Filing Date: 2002-06-25
Classification: B65B

Abstract:
A packaging process, comprising:a) providing a support member comprising a product support surface and a periphery; b) providing a film comprising a sealant layer, the sealant layer being sealable to the support member; c) orienting the film to an-orientation ratio of from about 6.0:1 to about 16.0:1; d) positioning a product on the product support surface of the support member such that at least a portion of the product extends upwardly above the level of the periphery; e) extending the film above the support member and product, the sealant layer being immediately above and adjacent to the support member and the product; f) drawing the film into a concavity by differential pressure; g) maintaining the concave shape of the film while heating the film; h) removing gases from the space between the film and the support member and product; i) introducing a desirable gas into said space; j) releasing the film such that it moves toward the product and the support member, the desirable gas being retained within the space precluding close contact of the film with the lowermost portions of the product; and k) sealing the film to the periphery of the support member, wherein at least the steps of heating the film shrinks the film, thereby tensioning it onto and across the underlying product.