B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 75/30 (2006.01) B32B 27/04 (2006.01) B65D 65/42 (2006.01) D06N 3/00 (2006.01) D06N 3/08 (2006.01) D21H 19/00 (2006.01)
Patent
CA 2487773
A coated porous sheet material comprising a gas permeable sheet material selected from the group consisting of flash spun plexifilamentary nonwoven sheet, spunbonded-film-spunbonded composite sheet, spun-laced polyester/wood pulp composite sheet and paper and a polymeric coating on at least one side thereof, wherein the permeability of the coated sheet material is substantially equivalent to the permeability of an equivalent sheet material without the coating. The coated porous sheet material is suitable for use in heat sealable packages.
La présente invention concerne un film de matériau poreux revêtu qui comprend un film de matériau perméable aux gaz, choisi dans le groupe formé par un film non-tissé obtenu par filage éclair de filaments plexiformes, un film composite non-tissé par filage direct-film-non-tissé par filage direct, un film composite polyester non-tissé lacé par filage/pâte de bois et du papier, ainsi qu'un revêtement polymère sur au moins une de ses faces. La perméabilité du film de matériau revêtu est sensiblement équivalente à la perméabilité d'un film de matériau équivalent sans le revêtement. Le film de matériau poreux revêtu selon cette invention convient à un usage dans des emballages thermoscellables.
Bletsos Ioannis V.
Mikhael Michael G.
Rodriguez-Parada Jose Manuel
Yializis Angelo
E.i. Du Pont de Nemours And Company
Sigma Laboratories Of Arizona Inc.
Torys Llp
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