Coated sheet materials and packages made therewith
AssigneesE.I. du Pont de Nemours and Company, Sigma Laboratories of Arizona, Inc.
InventorsIoannis Bletsos, Michael Mikhael, Jose Rodriguez-Parada, Angelo Yializis
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Abstract
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.
Claims13
A heat sealable package comprising:
- a first material which comprises a fibrous sheet, said first material having a coating covering at least one side, said coating comprising polyacrylate having a thickness between about 0.05 and about 5 μm;
- and
- a second material;
- wherein portions of the coated side of the first material can be heat-sealed to the second material such that the first material and the second material cooperate to form a void capable of containing an article.
Dependencies are inferred from the claim text.