What factors affect the compressive capacity of cartons? Hangzhou Dingfeng Paper Packaging Co., Ltd. will explain to you:
1) Quality of raw materials
Base paper is the decisive factor to determine the compressive strength of cartons. However, the influence of other conditions in the production process of corrugated cardboard can not be ignored, such as the amount of adhesives, impregnation of corrugated height changes, coating, composite processing and so on.
2) moisture content
Cartons made of corrugated cardboard with excessive moisture content, or stored in humid environment for a long time, will reduce their compressive strength. Fiber is a kind of water absorbent. When the humidity in the air is high during the plum rain season, the relationship between moisture in cardboard and the humidity in the atmosphere is very important.
3) box type
Box type refers to the type of carton and the size ratio of the same type of carton. They have a significant impact on the compressive strength. Some cartons are made of double-layer corrugated cardboard, and their compressive strength is obviously higher than that of single-layer cartons of the same specifications. Under the same conditions, the higher the carton, the worse the stability and the lower the compressive strength.
4) Printing and Opening
Printing reduces the compressive strength of cartons. The strength of cardboard boxes can be reduced by opening on the surface of the box or punching and cutting the hand holes on the side of the box, especially when the area of opening is large and the side is inclined to a certain side.
5) Vortex Street Flowmeter with Processing Deviation
In the process of making cartons, improper wire pressing, deep grooving and poor combination will also reduce the compressive strength of cartons. If the finished cartons need to reach a certain strength, they must be tested for compression (carton compression testing machine), ring pressing, rigid pressing, side pressing, adhesion (ring pressing testing machine), bursting resistance (rupture strength testing machine) to assess whether the cartons meet customer requirements or national standards.