A MACHINE INTENDED FOR PACKING PRODUCTS IN RIGID OR SEMI-RIGID PALLETS, SEALED UPPER WITH THERMOPLASTIC FILM, ESPECIALLY FOR THE PRODUCTION OF PACKAGES WITH MODIFIED ATMOSPHERE

摘要

1. A machine for packaging products in rigid or semi-rigid pallets, top-closed with thermoplastic film, in the manufacture of packages with a modified or unmodified atmosphere and having an intermittent mode of operation, characterized in that it contains the first station (S1) for preparing groups of pallets filled with products (V), placed at regular intervals between each other in one or two parallel rows; an intermediate station (S2) for closing and heat sealing the coating on the upper edge of the indicated groups of pallets, in selection after removal of air from said pallets and / or replacement of air with a modified atmosphere, useful for preserving packaged products, and subsequent cutting operations to separate closed pallets from the continuous web from which the specified covering coating is taken; terminal station (S3) intended for dispensing groups of pallets with packaged product; means for periodically and simultaneously moving groups of pallets with the product from the indicated first station (S1) to the specified second station (S2) and from the second station (S2) to the specified third and final or issuing station (S3) .2. The machine according to claim 1, characterized in that said stations (S1, S2, S3) are equidistant from each other in the horizontal direction, said transmitting means comprising moving and lifting devices (16, 16 ') operating along said stations, which have a length that allows simultaneously occupying two such sequential stations, and which are equipped with any means, such as teeth (116, 116 ') of devices that can be inserted in the transverse direction under