What does the carton industry term 300 GSM ccnb top sheet+Class A and Class BC double-wall correction mean?

This string of terms is related to the materials and specifications of the carton industry. Let me explain one by one:

1.300gsm CCNB top layer:

-300gsm: indicates the gram weight of cardboard, that is, grams per square meter. Here, 300gsm refers to the gram weight of 300 grams per square meter.

-ccnb: clay coating newsback is a kind of cardboard coated with clay, which is usually used on the surface of cartons to make them smoother and more shiny.

-Top layer: Top layer cardboard, usually the top layer for packaging.

Therefore, "300g/m2 CCNB top sheet" means that the top surface of the carton is made of 300g/m2 clay coated paperboard.

2. Class A BC double-wall corrugated board:

-Grade A: indicates the grade of cartons, which is usually used to indicate the quality and performance of cartons. "Grade A" stands for high quality grade.

-BC double-wall corrugated paper: indicates the corrugated board structure of the carton. "BC" means that the carton is double-layer corrugated board, that is, it contains two layers of corrugated board, which provides higher strength and protection.

Therefore, "Class A, BC double-walled corrugated paper" means that this carton belongs to high-quality grade and adopts double-layer corrugated board structure, which has better strength and protection. This design is usually used for packaging that requires a higher level of protection, such as transporting fragile or important items.