Dupont Teijin Films U.S. Limited Partnership

David Voisin

Stephen William Sankey

Stephen Keith Franzyshen

Fenghua Deng

Cornell Chappell, Jr

Ken Evans

Pierre G O Moussalli

Jay B Barber

A sealed container containing a foodstuff or beverage has a lid that includes a heat-sealable, composite film that includes a polymeric substrate layer having a first and second surface, a primer layer that includes PVdC disposed on the first surface, and a heat-sealable polymeric layer extrusion coated on the primer layer. The heat-sealable polymeric layer is 12 &#x3bc;m thick or less and includes a copolymer having repeating monomeric units of ethylene and at least a second type of repeating monomeric unit having the formula [&#x2014;CHC(R)(X)&#x2014;] wherein:

Heat-sealable composite polymeric film

A breathable, heat-sealable, composite film comprising a perforated polymeric substrate layer having a first and second surface and disposed on a surface of the substrate layer an unperforated barrier layer wherein: (i) the thickness of the unperforated barrier layer is no more than about 12 pm; and (ii) the perforated substrate layer has a degree of perforation of from about 0.1 to about 78%, wherein the perforations have an average diameter of between 0.05 and 1.5 mm; and a process for the production thereof, suitable for use in the packaging of freshly cut plants such as flowers, vegetables, fruits and salads.

Self-venting polymeric film

A heat-scalable, composite film said film comprising a polymeric substrate layer having a first and second surface and disposed on a surface of the substrate layer a water-soluble barrier layer, wherein (i) the substrate layer has one or more venting means therein; and (ii) the thickness of the barrier layer is from about 0.05 to about 40 &#x3bc;m; a process for the manufacture thereof; and use thereof as a self-venting film in the packaging of an ovenable meal.

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Midlothian, VA, United States of America

David Voisin