Systems and methods for treating and handling cardboard sheets

An automatic-adjustable stacker, comprising:

• a controller that obtains information on a length of a pre-treated cardboard;
• and an automatic-adjustable gripper mechanism;
• wherein the controller synchronizes the automatic-adjustable gripper mechanism with the arrival of a leading edge of a pre-treated cardboard at substantially an end-edge of a module preceding the automatic-adjustable stacker, the automatic-adjustable gripper mechanism operating to:
• grip the leading-edge of the pre-treated cardboard from the substantially end-edge of the module preceding the automatic-adjustable stacker;
• transfer the pre-treated cardboard toward a desired location;
• and
• release the transferred pre-treated cardboard when a trailing-edge of the pre-treated cardboard is proximate to the end-edge of the module preceding the automatic-adjustable stacker, based at least in part on the length of the pre-treated cardboard obtained by the controller, wherein a concavity-like shape is created to the pretreated cardboard while it is being transferred.

A vacuum sorter comprising:

• a controller;
• a vacuum chamber having openings along a portion of its surface;
• and
• a peeler;
• wherein a pre-treated cardboard is placed along the surface of the vacuum chamber and the controller commands the peeler to get hold of an area of the pre-treated cardboard and pull a portion of the pre-treated cardboard away from the vacuum chamber surface.