POLYMERIC FILM Russian patent published in 2007 - IPC C08F297/08 C08F210/16 C08L23/18 C08J5/18 B65D75/04 B65B11/00 B29C49/04 B32B27/32 

FIELD: chemical industry; methods of production of the polymeric films.

SUBSTANCE: the invention is pertaining to the production process of the polymeric films, in particular, to production of the multimodal films manufactured by polymerization at presence of the catalytic agent with the similar type centers of polymerization, having more than one η⁵ - the cyclical ligand. As comonomer of ethylene the film contains, at least, two С_4-12 alpha-olefin preferably 1-butene and 1-hexene. The indicated film is used for the foodstuff packaging including the food and liquids. The method of the film production is the two-staged, including suspension and the subsequent gaseous phase polymerization. The film has the high sealing properties.

EFFECT: the invention ensures production of the polymeric film with the high sealing properties.

21 cl, 1 dwg, 4 tbl, 6 ex