B - Operations – Transporting – 31 – B
Patent
B - Operations, Transporting
31
B
B31B 7/00 (2006.01) B29C 63/02 (2006.01) B65D 5/56 (2006.01)
Patent
CA 2569956
A method for encapsulating a cellulose based substrate (20) with polymeric film (43) involves applying an adhesive to at least one of the respective films and providing a pressure differential between an environment defined between the films and an environment external to the films so that conformance of the films to the cellulose based substrate is promoted. The cellulose based substrate is encapsulated by the polymeric films and the films are sealed around the peripheral edges of the cellulose based substrate as well as edges that are defined by slots (32) and cutouts (42).
Cette méthode de mise en capsules de substrats à base de cellulose (20) dans un film polymérique (43) consiste à appliquer un adhésif à l~un au moins des films respectifs et de fournir une pression différentielle entre l~environnement délimité par les films et l~environnement externe aux films afin d~accentuer la conformité des films aux substrats à base de cellulose. Le substrat à base de cellulose est encapsulé par les films polymériques qui sont scellés autour des bordures périphériques du substrat à base de cellulose ainsi que des bordures délimitées par les encoches (32) et les découpes (42).
Horsfield Brian C.
Muise H. Donald Jr.
Muise Herbert D.
Wilhite Gerald
Young Richard H. SR.
Gowling Lafleur Henderson Llp
International Paper Company
Weyerhaeuser Company
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