The material composition of the carton, what are the chemical components in the carton

The material composition of the carton is mainly paper and glue, which are environmentally friendly and sustainable. However, as the demand for cartons increases, the functionality of cartons has gradually improved. Therefore, in addition to paper and glue, the material composition of cartons on the market has gradually increased.

For many special-purpose cartons, adding other materials can make the carton more environmentally friendly, waterproof, moisture-resistant, tear-resistant, or have some special gas barrier properties.

The carton may contain some chemical components, such as polyethylene and polyamino acid lipids. These chemistries can be used as additives to improve the physical properties of cartons. For example, polyethylene is a common plastic that can be added to cartons to improve their tear resistance while also enhancing the carton's waterproofness and sealing.

Polyamino acid ester is an additive with good moisture-proof performance, which can improve the moisture-proof performance of the carton and avoid the influence of humidity on the contents.

A possible ingredient is kraft pulp, which is made mainly of chemicals and has a very strong finished product, hence the name kraft paper. Another possible ingredient is semi-chemical pulp, which uses a chemical treatment to remove some of the lignin from the wood and then mechanically crush the remaining softened wood chips. The purity and strength of this pulp is higher than that of wood pulp, and the yield is higher than that of chemical pulp made by chemical methods.

In general, cartons may contain components such as paper, glue, polyethylene, polyamino acid lipids, kraft pulp, and semi-chemical pulp. These ingredients have different functions and roles that can improve the performance and quality of cartons.

The classification of carton materials is as follows. The classification of carton materials is as follows:

1. Whiteboard paper: whiteboard paper is a kind of cardboard with white and smooth front and gray background on the back, which is mainly used for single-sided color printing to make cartons for packaging, or for design and handmade products.

2. Kraft cardboard: Kraft cardboard, known as containerboard paper in China, is one of the main types of paper used in cartons. Domestic containerboard is divided into three grades: excellent products, first-class products, and qualified products.

The kraft paper must have a tough texture, high burst resistance, ring compressive strength and tear resistance, in addition to a high water resistance.

3. Corrugated base paper: corrugated base paper is one of the important components of corrugated cardboard. Corrugated base paper requires good fiber bonding strength, smooth paper surface, good tightness and stiffness, and a certain elasticity to ensure that the made carton has shockproof and pressure resistance.