white cardboard is a kind of white cardboard made of thick, firm, pure and high-quality wood pulp. After calendering or embossing, it is mainly used for printing substrate for packaging and decoration, which is divided into three levels, A, B and C, with a quantitative of 210-400g/m2. It has the advantages of low printing cost and good color. It is the first choice for most packaging box papers. With the international "plastic restriction order" policy, the market demand for white cardboard has surged.
Corrugated paper is made of face paper, lining paper, core paper and corrugated paper processed into waveform corrugated by bonding. The size is divided into five types: A, B, C, E and F. Type A and B corrugated paper are generally used as the outer packing box for transportation, and beer boxes are generally made of B corrugated paper. E corrugated is mostly used for single package, while F corrugated is micro corrugated, which is mainly used for disposable packaging of hamburgers, pastries or refrigerated goods. The advantages of corrugated paper lie in its low cost, light weight, easy processing, and more than 80% of corrugated paper can be recycled. The outer packing boxes, fruit boxes, and suitcases of packaging products are all suitable for corrugated paper.
Special paper is made from different fibers by paper making machine. There are many kinds of special paper. Gold and silver cardboard is mainly used in packaging box. Its advantages are that the paper is firm, the color is full, the surface is smooth and fine, and the disadvantage is poor ink permeability and absorption.
