DEEP-DRAWN TRAY OF SHEET MATERIAL MANUFACTURING METHOD AND DEVICE Russian patent published in 2018 - IPC B65D1/26 

FIELD: technological processes; transportation.

SUBSTANCE: application describes the deep-drawn tray (1) manufacturing method and device from the fibrous sheet material (2), such as polymer coated cardboard. Device includes female mold (3) with the cavity (7) for the tray bottom forming from the outside, male mold (4) with the plunger plate (11) for the tray bottom forming from the inside, which is capable to move relative to the cavity for the tray formation, and clamps (6, 15) with contact surface for the sheet material holding and the tray edge formation. According to the invention, due to the fact that at least one of the molds (3, 4) is spaced at a certain distance laterally from the sheet material, enabling the allowance for the tray side walls free formation and prevention of their folds or tears formation. Behind the plunger plate (11) a spacer (13) may be located to adjust its position relative to the female mold (3) cavity (7). For adjustment of the cavity bottom distance from the clamps contact surface and thereby varying the tray depth, in the cavity there may be a separate lower plate (8) and spacers (9) below it, or screws may be provided.

EFFECT: disclosed are the deep-drawn tray of sheet material manufacturing method and device.

15 cl, 4 dwg