Appeal 2006-2805
Application 09/843,990
21. A process for packaging a product, comprising the steps of:
(A) placing a first product into a flexible, heat-shrinkable bag, the bag
having an open top, whereby a first bagged product having excess bag length
results, and wherein the bag comprises a multilayer film comprising:
(1) a first layer, which is an inside bag layer, and which
comprises polyolefin;
(2) a second layer comprising at least one member selected
from the group consisting of polyolefin, polystyrene, and
polyurethane;
(3) a third layer comprising a polyamide having a melting point
of 160ºC and below; and
(4) a fourth layer, which is an outside bag layer, the fourth
layer comprising polyester; and
wherein the bag is produced by sealing the first layer to itself,
whereby the first layer is an inside bag layer and the fourth layer is an
outside bag layer;
(B) repeating the placing step with a second product and a second
bag, whereby a second bagged product results;
(C) stacking at least the first and second bagged products so that the
excess bag length of each of the bagged products are on top of one another
within a sealing distance of a means for heat-sealing;
(D) heat-sealing the inside layer of first bag to itself in the region
between the open end of the first bag and the product, and the inside layer of
the second bag to itself in the region between the open end of the second bag
and the product, so that the first product is completely sealed within the first
bag and the second product is completely sealed with the second bag, the
sealing being carried out at a temperature so that the resulting packaged
products can be freely separated from one another without layer
delamination.
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Last modified: November 3, 2007