Patent ID: 6541095
Filing Date: 2003-04-01
Classification: B29C,B29K,B31B,B32B,Y10T

Abstract:
A flattened tubular film of thermoplastic material comprising inner faces which are distinct from each other and wherein the two inner faces are not welded and not glued to each other but are separable subject only to force to overcome blocking between said two inner faces; wherein at least one of said two inner faces comprises a pattern in relief and hollows, wherein said hollows contain gas; wherein said two inner surfaces are in mutual contact only over part of their surfaces wherein said mutual contact between said two inner faces provides essentially hermetic cells due to blocking at an area of said mutual contact . . . â€œhas been deleted and the text â€  two distinct parallel inner faces, wherein both inner faces comprise half-circumferences, where said inner faces are in mutual contact only between said half-circumferences in a discrete pattern, wherein said two inner faces are not welded or glued, wherein said half-circumferences contain gas, and wherein said half-circumferences provide hermetic gas cells.