Recoverable reinforced foaming sheet packing material and preparation method thereof

Abstract

The invention relates to a recoverable reinforced foaming sheet packing material and a preparation method thereof. The preparation method comprises the following steps that (1) an upper foaming boardand a lower foaming board are prepared with a foaming process; (2) the upper foaming board is arranged between an upper insulation roller and a high-voltage discharging rod, the lower foaming board isarranged between a lower insulation roller and the high-voltage discharging rod, the lower surface, heated and molten through corona discharging, of the upper foaming board and the corresponding upper surface of the lower foaming board synchronously pass through a corona heating area and are pressed and combined by a composite roll, thus a heat permeation layer is formed between the lower surfaceof the upper foaming board and the upper surface of the lower foaming board, the heat permeation layer connects the upper foaming board with the lower foaming board, and thus the upper foaming boardand the lower foaming board become a composite whole; and (3) BOPP/PE/PET plastic film layers/a BOPP/PE/PET plastic film layer are/is attached to the upper surface of the upper foaming board and/or the lower surface of the lower foaming board with PUR glue through UV curing technology. After corona treatment is combined with pressing combination by the composite roll, the lower surface of the upper foaming board and the corresponding upper surface of the lower foaming board permeate each other to form the heat permeation layer, overall strength can be improved, strength can be enhanced by about 50%, and toughness can also be improved.

Description

technical field [0001] The invention belongs to packaging materials, in particular to a recyclable reinforced foam sheet packaging material and a preparation method thereof. Background technique [0002] At present, the packaging materials used to make packing boxes or other containers generally use corrugated cardboard. Corrugated cardboard is easy to age, break, not moisture-proof, not waterproof, and corrugated cardboard needs to use a large amount of wood as raw materials, which often leads to excessive felling of trees. Destroying the environment is not conducive to environmental protection. [0003] Therefore, the industry has been trying to find some packaging materials that can replace corrugated cardboard. If injection-molded plastic panels are used entirely, the cost will be too high. Moreover, due to the high density of injection-molded plastic panels, the produced packaging boxes are heavy and not suitable for handling. In addition, thicker injection-molded plas...

AI Technical Summary

Problems solved by technology

[0002] At present, the packaging materials used to make packing boxes or other containers generally use corrugated cardboard. Corrugated cardboard is easy to age, break, not moisture-proof, not waterproof, and corrugated cardboard needs to use a large amount of wood as raw materials for production, which often leads to excessive felling of trees. Destroy the environment, not conducive to environmental protection

[0003] Therefore, the industry has been trying to find some packaging materials that can replace corrugated cardboard. If injection-molded plastic panels are used entirely, the cost will be too high. Moreover, due to the high density of injection-molded plastic panels, the produced packaging boxes are heavy and not suitable for handling. In addition, thicker injection-molded plastic sheets are difficult to fold and pack, and thinner injection-molded plastic sheets are hard to meet the packaging requirements. Therefore, it is difficult for injection-molded plastic sheets to replace corrugated cardboard as packaging materials. Injection-molded plastic sheets are only used in some special applications. Packaging, cannot be widely promoted and applied

The foamed board has the advantages of light weight, waterproof and good heat insulation performance, but the single-layer foamed board has low impact strength, poor toughness, and is easy to break down, so it has defects as a packing box.

Images