1. Choose suitable carton raw materials

According to the quality size of the contents, the appropriate facial paper, stupid paper paper core. For the quality size of different contents, choose different raw materials. Increasing the edge pressure strength of the cardboard is actually to increase the ring pressure strength of the facial paper. Using high-quality, high-strength, low-weight raw materials in the carton production process is an effective way to improve carton quality reduce costs. "Lightweight tissue paper, heavyweight core paper."

2. Reasonable box design

①The ratio of length to width of the carton (L/B)

The ratio of length to width of the bottom of the carton is different, the compressive strength is also different. When the ratio of length to width is 1.2 to 1.4, the compressive strength of the carton is max.

② Box height (H), when the carton has a certain peripheral length the height is between 20-25cm, the greater the height, the smaller the compressive strength; when the height is 25cm-1m, its compressive strength hardly changes.

③Carton peripheral length Z=2(L+B) When the height of the carton other conditions are constant, the circumference of the carton is doubled, the compressive strength will increase by about 55%. Cartons with a circumference of less than 2m are better processed. Its compressive strength easily meets design requirements

④ Carton the four corners of the carton

 "Cut corner" treatment The compressive strength of the carton after the "corner cut" treatment can be increased by 31%. It can also save paper consumption reduce breakage.

3. Stable production process

a. The squareness problem of the carton mainly depends on whether the cardboard creasing line meets the standard.

The width of the indentation line of the corrugated carton should be no more than 12mm for a single corrugated carton no more than 17mm for a double corrugated carton. The fold line should be centered. When the cardboard is double-sided, the carton is square, when it is single-sided, the carton lacks squareness, the folding resistance of the flap is reduced.

b. Whether the size is accurate.

    Although the corrugated box is stipulated to have an allowable error range. But regardless of whether it is within the allowable error range, the compressive strength is different. Therefore, the carton factory should minimize errors.

4. Bonding pressure

When the Kunshan carton manufacturer is sending printing by mechanized transmission, the printing is completed after the pressure of the printing cylinder the corrugated cardboard. When the pressure is high, the graphics text of the cardboard are clear, the slot size is shifted; when the pressure is too high, the graphics text on the surface of the cardboard will appear. Concave-convex phenomenon, thereby crushing the corrugated cardboard, affects the edge compressive strength of the cardboard the compressive strength of the corrugated box after forming. The compressive strength of the carton with excessive printing pressure is 30%-40% lower than the compressive strength of the same carton after printing.