What Are The Material Classifications Of Paper Bags?

The design of gift paper bags can be divided into: white cardboard paper bags, white cardboard paper bags, copper cardboard paper bags, kraft paper bags, and a small amount of special paper.
White linerboard: The white linerboard is firm and thick, with high stiffness, burst resistance and smoothness. The paper surface is flat. The commonly used thickness is 210-300g white linerboard, and the most used is 230 white linerboard. The paper bags printed with white cardboard are full in color, and the texture of the paper is also very good, which is your first choice for customization.

Copper coated paper: The coated paper is characterized by its smooth and smooth surface, high whiteness, high smoothness and good gloss. It also makes the printed graphics and pictures have a three-dimensional sense. The commonly used thickness is 128g – 300g. The printing effect of copper coated paper is the same as that of white cardboard. The color is full and bright. Compared with white cardboard, its stiffness is not as good as that of white cardboard.

White kraft paper: white kraft paper has high bursting resistance, good toughness, high strength, uniform thickness, and stable color image. According to relevant national laws and regulations, supermarkets are restricted from using plastic bags, and foreign countries, Europe and the United States and other countries advocate the trend of using environment-friendly paper bags. Plastic pollution is strictly controlled. Plastic bags will be replaced by environment-friendly paper bags. The white kraft paper market has a good prospect. Made of 100% pure wood pulp, it is environmentally friendly and non-toxic, and can be recycled. The white kraft paper has good toughness and does not need to be coated. It is widely used to make environment-friendly clothing handbags, high-end shopping bags, etc. The common thickness of white kraft paper is 120g-200g. The paper has no brightness and glossiness. White kraft paper is not suitable for printing content with too much ink.

Kraft paper: also called natural kraft paper. It has high tensile force, high toughness, usually brown yellow, high tear strength, fracture and dynamic strength, and is widely used in shopping bags, envelopes, etc. The commonly used thickness is 120g-300g of natural kraft paper. Kraft paper is generally suitable for printing single or double color manuscripts with uncomplicated colors. The price of kraft paper is the lowest compared with white cardboard and white kraft paper box coated paper.
Whiteboard with gray background: Whiteboard is a kind of board with white and smooth front and gray background back. The common thickness is 250g – 350g. Whiteboard is white on one side and gray on the other. The price is cheaper than that of white cardboard.
Black paperboard: It is a kind of special paper with black sides. Black paperboard is characterized by fine paper, black heart, strong and thick, good folding resistance, smooth surface, good stiffness, good tension, high burst resistance. The commonly used thickness is 120g – 350g black cardboard. Because black cardboard is black inside and outside, it cannot be printed with color patterns, and is only suitable for gilding, silver stamping and other processes. The bag is also very beautiful.
According to the bag edge, bottom and back sealing methods, there are four types of paper bags: open seam bottom bag, open adhesive corner bottom bag, valve type suture bag, and valve type flat hexagonal end bottom adhesive bag.

According to the different handles and hole digging methods: NKK (drilling and threading), NAK (there is no hole and rope, which can be divided into non folding and standard folding), DCK (cordless bag body hole digging handle), BBK (there is tongue and no punching).
Precise and beautiful portable paper bag has become a convenient shopping bag for ladies. The design of gift paper bag, in addition to paying attention to tight structure, does not come off the bottom, but also pursues environmental protection, beauty, precision and durability. It is precisely because of these characteristics that it is different from ordinary paper bags. Paper bags made of different materials can reflect different characteristics. Different back cover methods also make them able to withstand multiple gifts. It is also because of these that they are suitable for different gifts. Reyoung is a professional manufacturer of paper bag packaging. Please contact us if necessary.