Dongguan Pinpai Packaging Industry Co., Ltd.

Cartons also use more complex structures and a variety of materials, such as various gift packaging, high-end tea packaging, and even the once-popular Mid-autumn gift cake packaging box. Some packaging is to protect the product more safely and highlight its preciousness and luxury. Some are packaged solely for packaging, which does not meet the practical functions of packaging described below.

In terms of materials used for cartons, cardboard is the main force. Generally, paper with a basis weight of more than 200gsm or a thickness of more than 0.3mm is called cardboard.

The raw material of cardboard is basically the same as that of paper. Due to its high strength and easy folding characteristics, it has become the main production paper for packaging cartons. There are many types of cardboard, and the thickness is generally between 0.3 and 1.1 mm.

Corrugated cardboard: Two parallel sheets of paper are mainly used as the outer and inner papers. The corrugated core paper processed by a corrugated roller is sandwiched between each paper sheet and the corrugated paper coated with adhesive on the corrugated peak. Corrugated board is mainly used to make outer packaging boxes to protect commodities in the circulation process. There are also finer corrugated papers that can be used as the inner village of commodity cardboard packaging to strengthen and protect commodities. There are many types of corrugated paper, including single-sided, double-sided, double-layer and multi-layer.

White paperboard is made of chemical pulp and high-grade paper pulp. There are ordinary white paperboard lined white paperboard, kraft paper lined white paperboard and so on. There is also a white cardboard made entirely of chemical pulp, also known as high-grade white board paper.

Yellow paperboard refers to low-grade paperboard made from paper pulp produced by the lime method with straw as the main raw material. It is mainly used as a box core that is pasted in the carton for fixing.

Kraft paperboard: made from kraft pulp. The one with kraft pulp on one side is called single-sided kraft board, and the one with kraft paper on both sides is called double-sided kraft board. The main function of corrugated paperboard is called kraft boxboard, and its strength is much higher than that of ordinary paperboard. In addition, it can also be combined with water-resistant resin to make water-resistant kraft paperboard, which is mostly used as a collection of beverage boxes.

Composite processing paperboard: refers to the paperboard made of composite aluminum foil, polyethylene, greaseproof paper, wax and other materials. It makes up for the shortcomings of ordinary cardboard, making the packaging carton with oil-proof, waterproof, fresh-keeping and other new functions.