Abstract: An automatic carton forming device includes a supporting table, a storage rack, a limiting part, a transporting part, and a folding part. The storage rack is configured to store folded paper boards, the limiting part is configured to limit the folded paper boards, the transporting part includes a moving base and a driving unit for driving the moving base to move. At least one first vacuum suction cup is disposed on the moving base, the limiting part includes an adsorbing base disposed on one end of the supporting table, at least one second vacuum suction cup is disposed on the adsorbing base. The folding part includes a first overturning plate, a vertical folding unit, a transverse folding unit, and a transmitting unit, and the transmitting unit drives the first overturning plate, the vertical folding unit, and the transverse folding unit to perform folding action.

Abstract: The disclosure relates to a modifier composition for polyolefin, a polyolefin for packaging and a flexible packaging film. The disclosure relates to a modifier composition for polyolefin, including: (A) nano-silicon dioxide; (B) polyvinyl alcohol; (C) acrylic copolymer; and (D) Ethylene-Vinyl Acetate (EVA) copolymer. The disclosure also relates to a polyolefin for packaging, including: a polyolefin resin and a modifier composition of the polyolefin provided by the disclosure. The disclosure also relates to a flexible packaging film, of which at least a part is made of the polyolefin for packaging of the disclosure. The modifier composition of the disclosure can obviously improve the performance in the aspect of reducing residue of solvent in the polyolefin flexible packaging film.