| 摘要 |
<p>A nicotine containment pouch (15) is formed from laminates comprising a nicotine barrier layer (20) and a nicotine degradation agent barrier layer (22). The preferred nicotine barrier layer comprises a nitrile rubber modified acrylonitrile-methyl acrylate copolymer formed by the graft copolymigration of 75 pbw acrylonitrile, and 25 pbw methyl acrylate in the presence of about 10 pbw of a butadiene-acrylonitrile copolymer containing about 70 % by weight of polymer units derived from butadiene. The preferred nicotine degradation agent barrier layer is aluminum. The exterior surface of the pouch is optionally covered by a protective layer (26) of paper stock or polyethylene terephthalate. The nicotine barrier layer is bonded to itself about the periphery of a nicotine containing body (34) within the pouch.</p> |
