MOULDED PAPER BODY WITH MINIMUM FORMATION OF FOLDS AND METHOD FOR FORMATION THEREOF Russian patent published in 2016 - IPC B31B43/00 

FIELD: packaging industry.

SUBSTANCE: invention relates to moulded paper body with minimum formation of folds, method for production thereof and paper container with body and bottom elements obtained using said method. deep drawing pressure applied frame which tightens fold element is not less than value at which formation of folds starts at height exceeding threshold value α, but not more than 12 % of ultimate strength at break in direction perpendicular to direction of paper making a workpiece, and size of cavities in horizontal cross-section wall section is not more than 30 % of received for 100 % of thickness of paper base vertical part at a distance from bottom element within threshold value α, wherein threshold value α is preset height, below which there is no formation of folds.

EFFECT: moulded paper housing is formed by deep drawing of a flat blank consisting mainly of paper, which provides for lifting of external peripheral section of billet and forming section wall using puncheon, matrix and retention mechanism external peripheral section of blank by compression between frame which tightens fold element and upper surface of matrix.

12 cl, 10 dwg, 2 tbl