Section 8 Folding Carton Strength Calculation
First, folding carton strength
Folding cartons are produced with folding-resistant paperboard. The strength of the carton is related to the stiffness of the paperboard. The stiffness of the paperboard depends on the thickness of the paperboard, namely the cross-sectional area of ​​the paperboard, the elastic modulus, and the longitudinal and transverse direction of the paperboard.
In shipping or storage, the carton is mainly subjected to stacking pressure.
The cardboard thickness increases in direct proportion to the stacking strength.
Second, folding carton strength calculation formula
Section 9 Paste the carton
A pasting carton is formed by adhering and pasting the substrate paperboard with a veneer material, and can not be folded into a flat plate after molding.
1. Advantage 1 You can use many types of veneer materials.
2 Anti-jamming protection is good.
3 high stacking strength.
4 is more economical, suitable for small batch orders.
5 with display promotions.
2. Disadvantages 1. High production costs 2. Can't fold stacking code 3 Veneer materials are generally manually positioned, and the printing surface is easily deflected.
4 Low production speed, difficulty in storage and transportation
Second, paste the raw material substrate of the carton is mainly selected non-folding board with high stiffness, the thickness range of 0.41-1.57mm, commonly used thickness range of 1-1.3mm. Lined with white or white corrugated paper, plastic, sponge, etc. There are many types of veneer materials.
The box corners can be fixed by adhesive tape reinforcement, staples, paper (cloth) bonding and other methods.
Section ten paste carton structure
First, paste the carton structure
1, tube paste carton
1 structural features
a. Paste by hand.
b. Use paper or cloth to secure the four corners of the box. Do not fasten it with staples.
c. Manual cutting, high dimensional accuracy.
2 Structure
2, disc paste carton made of a cardboard box.
1 Features
a. can use paper, cloth, nail synthetic buttonholes to fix the four corners of the box;
b. The structure is simple, that is, it can be pasted manually, or it can be pasted mechanically, which is convenient for mass production;
c. Poor corners and indentation accuracy.
2 Structure
3. One of the paste trays is also formed by the disc method, and the other is formed by the tube method. 2. The carton type is pasted.
1. Cover box 1 Full cover 2 Shallow cover 3 Deformation cover
2ã€Cover box 1 cover type 2 veneer cover
3, boss box
4, wide bottom box
5, book box
6, drawer box
7. Swivel box
8, shaped box 1 shaped box 2 round arch cover box