Do you know the material characteristics of paper bags made by paper bag machines?

1. Advantages of kraft paper:

Kraft paper has high toughness and solidity, and is not easily torn. This type of paper is generally suitable for printing monochrome or two-color paper bags with limited color options.

2. The advantages of black cardboard:

Black cardboard is solid and durable, with a black color. Due to its black color, the disadvantage is that it cannot print colors, but it can be used for processes such as hot stamping and silver stamping.

3. The advantages of white cardboard:

White cardboard is solid and durable, with good smoothness, and the printed colors are rich and full. Paper bags usually use 210-300 grams of white cardboard, with 230 grams of white cardboard being more commonly used.

4. Material characteristics of copperplate paper:

Copperplate paper has excellent whiteness and glossiness, which can make pictures and images appear three-dimensional during printing, but its solidity is not as good as white cardboard. The commonly used thickness of copperplate paper for paper bags is 128-300 grams, and the corresponding weight range for common sizes is 120-300 grams.