[Chinese Packaging Network News] Modern wooden box packaging into the 21st century, the use of packaging has undergone great changes, the original packaging is traditionally for the convenience of transport, and the basic protection of goods, but after the 21st century The actual role of wooden box packaging has undergone great changes. The basic principle of modern wooden box packaging is: continuously improve the performance of packaging, and the added value of packaging, with particular attention to the role of wooden box packaging, not just for transport And to protect the safety of goods, but also to achieve beautiful, convenient, practical, and enhance the potential value of the product.
First, design guidance test
The purpose of the design guide test is mainly to test the performance of the product and the basis test of the wooden box packaging design. The test can reflect the product's performance and easily damaged parts through scientific data. The design of the wooden box packaging can be targeted. Make up and improve. A comprehensive inspection can be conducted by sweeping test and impact brittle test.
1, sweep frequency test method ASTM D3580 frequency sweep test, product without packaging and with packaging separately, focusing on the frequency response of important components, by installing sensors on important components, drawing graphics, you can analyze the resonance of the component Frequency, frequency sweep frequency range can be 2Hz ~ 200Hz ~ 2Hz, input acceleration is 0. 5g sweep frequency, in the resonant frequency, you can further increase the input acceleration, and then enter the original 2 times the resonant frequency Acceleration (1.0g) vibrates for 5 minutes.
2. Test methods for impact brittleness ASTM 3332 test products do not require packaging. By testing the impact brittleness of the product, we can further discover the weaknesses and defects in the product, understand the characteristics of the product, and improve the inherent quality of the product. Wooden box packaging design provides an important theoretical basis. According to the requirements of the home appliance product design specification, it is stipulated that the product needs to withstand half-sine wave velocity change rate greater than 170cm/s, and the impact square wave acceleration is greater than 36g.
The above two tests should be carried out at the initial stage of design. If problems are found that cannot be tested, improvements should be made immediately from both product and packaging aspects. Don't wait for the product to be finalized. The design cost at that time will be enormous.
Second, the overall product transportation
The test is based on the sales of the product, the product's logistics environment determines the corresponding test program, from which to extract and formulate the company's corresponding transport standards, the standard should be able to meet the quality requirements and transportation requirements of foreign companies, and throughout the product development and reform The final acceptance criteria of the model, so that the product sales to the end user's hands should be intact, and the damage ratio of the product due to transportation should be controlled within a very small range.
The specific implementation plan is as follows:
First of all, we can classify products according to the weight of the products. Weights exceeding 50 kg and less than 50 kg should be examined differently, because according to the statistics and relevant overseas transport test standard weights, different products will be damaged by different degrees and be destroyed. The way will be different, so it is necessary to classify. There are also product transportation standards that should be representative to meet the requirements of the international logistics environment and meet the requirements of foreign machinery handling.
1, small products <50 kg
The test plan should include warehouse tests, mechanical handling tests, vehicle transport vibration tests, air transport vibration tests, rollover tests, and drop tests.
A. Warehouse stacking test ASTM D-642
Calculation of the load: L = W * H-1 F formula, L is the carrying capacity, W: the weight of a single product, H: the number of layers the product is allowed to stack, and F: the coefficient of deterioration.
B. Mechanical transport test ASTM D-6055
It is very common in foreign countries to carry out mechanical handling by forklift pressing and clamping. This test is to make the front, rear, left and right directions of the product subject to pressure. The maximum pressure the product can withstand should not be less than 800 kg. . Each direction should be done 10 times.
C. Vehicle Vibration Test ASTM D-4728
The use of foreign highway spectrum for random vibration, the vibration test method is more realistic to reflect the situation of the product in the road transport, product stacking together for random vibration test, it is recommended to choose 0. 73grms vibration for 1 hour.
D. Airborne Vibration Test ASTM D-4728
In foreign countries, express companies are very developed. They are responsible for quickly sending products purchased by customers on the Internet to customers' homes. They rely mainly on air transport and other logistics equipment, but the vibration of air and road transport is different. It generates The vibration frequency is high, so it is recommended to choose 1.06grms vibration for 30 minutes.
E, rollover test ASTM6197
The impact direction of the rollover impact test is in the front, rear, left and right directions of the product.
F, drop test test reference ASTM5276
Dropping is a common method of damage in transportation, and it is also relatively easy to cause damage to the product. Falling is unavoidable and should be given more attention. The number of falls is 10 times; the drop site: a corner of three and six sides;
G, function and appearance inspection
For home appliances products should be: high pressure test, leakage current test, insulation resistance, functional inspection, visual inspection, noise and so on.
According to the editor of China Packaging Network, wooden box packaging is a product that consumes natural resources, and should strive to create and realize a green earth with the requirements of green environmental protection and energy saving resources.