CONTAINER, PREFORM, MANDREL AND METHOD OF PRODUCING CONTAINER Russian patent published in 2010 - IPC B65D5/06 B31B1/28 

FIELD: transport, package.

SUBSTANCE: invention relates to sheet preforms, container made thereof and method of container fabrication. Sheet preform consists of cellulose material layer and thermoplastic layer. Said preform comprises a number of casing panels consisting of 1^st, 2^nd, 3^rd and 4^th panels, and a number of panels that cover the casing face and runs, in fact, parallel about aforesaid casing panels, and consist of 1^st, 2^nd, 3^rd, and 4^th panels that cover casing face. Each of 2^nd and 4^th face covering panels has 1^st and 2^nd inclined loose line that divide their panels into central subpanel adjacent to appropriate 2^nd and 4^th casing panels, and two end subpanels. Each of central subpanels features, in fact, triangular shape and runs from casing panel to the apex. First face closing panel comprises central tab extending outward its panel. Central tab is separated from its panel by loose line. The latter is shifted relative to imaginary line running through both apices and is located at the level of the most remote edge of the first face covering panel and imaginary line level.

EFFECT: reduced probability of interaction between cellulose material on container content.

37 cl, 14 dwg