Colour printed composite paper board for new type packaging box and manufacturing method

Abstract

A chromatographic composite paperboard for packing case (or box) is composed of chromatographic layer, non-transparent polypropylene layer, adhesive layer and single-or multi-layer paperboard. Its advantages are low cost, high performance, and beautiful appearance.

Description

technical field [0001] The invention relates to a composite cardboard for packing boxes. Background technique [0002] Traditional paper packaging box forming cardboard is divided into two types: non-color printing and color printing. The former material basically uses yellow kraft paper as the surface material, which is compounded with ordinary cardboard paper (including tea board paper, gray board paper, white board paper, etc.) by a compound machine. The latter is made of high-cost and high-cost wood pulp white board paper, white cardboard, art paper, etc., which are printed in single-sheet lithographic color and then laminated with ordinary single-piece boxboard paper with yellow kraft paper as the surface material. , made of color-printed cardboard, and then laminated with corrugated cardboard to make cartons; or directly laminated with ordinary cartons and cartons that have already been made. Non-color printed cardboard has low manufacturing cost and is a medium and ...

AI Technical Summary

Problems solved by technology

There is a kind of packing box cardboard that uses biaxially stretched polypropylene film as the outer layer and is printed on the concave wheel machine. Although it has waterproof and color printing effects, it still has the following disadvantages: 1. Biaxially stretched polypropylene film (OPP film for short) Even if it is composited on white board paper, it cannot show the writing characteristics of paper

2. Printing on the gravure printing machine can only be back printing (also known as bottom printing), not front printing (also known as surface printing). After back printing, the film itself only leaves a mark, and the imaging effect cannot be displayed alone, so compounding can only be selected white board paper contrast

3 Can only be printed first and then compounded, but not compounded and then printed

4 When laminating with white board paper, solvent-based glue (also known as water-based glue) is used. Therefore, some small air bubbles are prone to appear during wet composite molding, which will affect the imprinting and imaging of the OPP film

5. Because the OPP film is transparent and not paper, the back printing effect of the film itself will continue to appear overlapping or drifting due to the horizontal and vertical extension of the film itself.

6 Due to the selection of OPP film and water-based glue, it cannot meet the conditions for automatic box-making assembly line operations

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