| 摘要 |
<p>Monolayer polymeric film (I), for packing of articles at prolonged shelf life, comprises a polyamide sheet covered of heat seal coatings on its faces, where (I) has an average water vapor permeability of 35-110 g/m 2>/24 hours. Independent claims are included for: (1) a sachet for packing the article at prolonged shelf life, in which at least one of the partitions comprising the film; (2) a process for preparing (I), comprising obtaining a polyamide sheet, depositing a coating comprising polyvinylchloride and/or polyvinylidenechloride (PVDC) on the sheet, where the quantity of coating is 0.8-10 g/m 2> of polyamide sheet; and drying the obtained coating; (3) a process for preparing the sachet, comprising superimposing two films, so that the coating of faces are carried out at each another, and joining the edge of the films, on at least 50% of their periphery; and (4) a process for packing at least an article at prolonged shelf life, comprising placing the article on the film, on the face of coating film, covering the article with a portion remain free with film or another films, so that faces of coating are carried out one another, and joining the edges of the two films, so that article is confined in the sachet.</p> |
