Corrugated board Detection

- Dec 03, 2019-

图片6

Yesterday, the inspection of corrugated box raw materials was mentioned. These tests do not need to be done by the carton manufacturers themselves. They only need to be provided by the suppliers. These data are needed to prevent the occurrence of problems when they are available.


Although the corrugated box can replace most of the wooden box packaging, the reasons why it can't be done are: 1. The water and moisture resistance is not as good as the wooden box. 2. Easy to be punctured by sharp hard objects. 3. Compressive strength is not as good as wooden cases. (Especially this one)


So what kind of data do you need from a carton customer?


Corrugated cardboard boxes are packaging containers. The main test items are the following eight items:

Carton pressure test。

Carton pressure test is the most basic test for carton performance. It can determine the pressure resistance of the carton under different conditions.


The equipment used for the carton pressure test is a dedicated pressure tester. The working table of this testing machine generally has an area of 1.5mX1.5m or 1mX1m for each of the upper and lower pressure plates. One of the two pressure plates is a support plate. Its position can be adjusted according to the size of the sample to make it suitable Height, then fasten the carton; the other is a pressure plate, which can slide along the guide bar to apply pressure to the sample.

图片7

2. Carton drop test

The drop test can determine the performance of the carton and the cushioning effect of the carton structure. It is suitable for packaging with a total weight of less than 150 kg or a small volume.


The equipment used in the testing machine is relatively simple, and a hook drop testing machine or a strut-type testing machine can be used.


3. Bevel impact performance

For packages that are heavy or bulky, such as packages weighing more than 150 kg, you can use the bevel impact test to check the impact resistance of the package and its contents.


The slope impact test can simulate the strong impact caused by the train, car starting, braking and downhill.


This test can also provide similar experiments for various impact forces caused during the transfer process (such as goods passing through the conveyor belt, lifting, unloading, etc.).


The test device is an impact tester consisting of a slide, a block and a baffle.


4. Hexagonal drum test

The hexagonal drum test is a comprehensive test for simulating the carton containing items during transportation and receiving various external forces.


This test can mimic the tests that occur when a carton is transported into a warehouse, cabin, or compartment by a conveyor belt, or when the carton is transported from one floor to another high storage place by a conveyor belt.


This test can serve two purposes:

a. Simulate the shock and vibration that the carton may encounter during transportation, and test the carton's ability to withstand these shocks and vibrations.


b. Detect the protective ability of the carton, inner packaging and shock-proof materials to the contents. This test is also essential to check the reliability of the carton joints and closures.


This test is performed on a special hexagon drum tester.


5. Vibration and anti-vibration performance test


The carton will be subjected to vibrations of different frequencies and amplitudes during transportation, which will affect the carton and its contents, such as deformation and cracking of the carton, surface abrasion, and ink contamination.


Due to the wide range of vibration frequencies during transportation, the test includes two aspects:

a. Put the carton on the vibration table without tightness, and test the carton's ability to withstand the fatigue and high frequency vibration caused by repeated vibration;


b. The other is to put the carton tightly on the vibration table, and check whether the low frequency vibration will cause resonance in the carton contents. This test is mainly used for items that are very sensitive to low-frequency vibrations, including electronic equipment.


The vibration table for the carton vibration test can generate a vibration frequency of 1-80Hz and an acceleration of 0.5-10g (g = 9.81m / s * s). Place the test carton on the shaking table, tie the carton tight or allow it to move freely.


The basic method of the test is to reproduce the vibration during transportation, such as in the train compartment, car compartment, and aircraft cabin, under experimental conditions. The strength of the vibration depends on the type of transport.


Carton stacking quantity is generally not less than 3, the total stacking height should depend on the type of transportation.


Generally, the stacking height of railway transportation is 2.5m, that of cars is 2m, and that of air transportation is 1.5m. The test termination time is determined by the breakage rate of the carton. Damage includes damage to the carton's seams and adhesive box walls.


6. Spray test


The corrugated cardboard box is sprayed under the prescribed conditions for the prescribed time and the amount of water sprayed, and the ability of the cardboard box to withstand water immersion and the ability of the cardboard box to protect its contents are tested.


7. Weather resistance test


This is the test carton's resistance to weather tests in outdoor environments, including comprehensive damage caused by light, cold and heat, wind and rain, bacteria, etc.


It can evaluate the service life of the carton in ordinary or extreme environments. Weather resistance testing has a very important position in product testing in many industries, and is getting more and more attention from enterprises.


8. Friction performance test


At present, many product manufacturers use automated assembly lines or mechanical equipment in the process of product packing, handling and transportation, such as using a forklift to transport the boxes after stacking, or using conveyor belts to transport them to the warehouse. If the carton surface does not have a certain sliding angle (the carton surface is too slippery), it is easy to cause collisions and slippage between the carton during transportation, which will cause damage to the contents of the carton.


Therefore, some large professional customers require a certain anti-slip angle for the ordered corrugated cardboard boxes, that is, the stacking of cardboard boxes is within 200 degrees of inclination, and there can be no sliding and falling between the boxes.


The purpose of checking this indicator: a carton with a high surface friction coefficient indicates that the carton can resist sliding when it is stacked with a tilt. A low coefficient indicates a potential problem. The packaging will slide after the stacking, which causes unsafe items. factor.


Are the tests mentioned above not easy for you as a carton? Although the carton looks simple, it is not easy to make it.