GB/T 21661-2020 Plastic shopping bag carrying bag fatigue testing machine

GB/T 21661-2020 Plastic shopping bag carrying bag fatigue testing machinePLY-03 has the multifunctional adaptability of *, which can meet the detection needs of different types of plastic shopping bags. It can easily handle both common vest bags and various styles of handbags. Thanks to its unique design, the fixtures and suspension devices of the testing machine have been carefully designed and optimized to flexibly adapt to plastic shopping bags of different shapes, sizes, and materials.

GB/T 21661-2020 Plastic shopping bag carrying bag fatigue testing machinePLY-03 testing method

1、 The necessity of lifting test for plastic shopping bags

Although plastic shopping bags have the advantages of being lightweight and waterproof, the breakage of the lifting strap or damage to the bag body during the process of carrying heavy objects and repeated carrying may result in item loss or even safety hazards. Jinan Ruilaibo Intelligent Technology Co., Ltd. believes that detecting bag fatigue and ensuring product quality is an important matter. By conducting lifting tests, actual usage scenarios can be simulated to evaluate its durability and load-bearing capacity, thereby ensuring consumer safety during use. Research has shown that insufficient strength of the lifting belt or defects in the sealing process are the main reasons for non-compliance, such as improper raw material ratios or lax production process control, which may cause bag breakage.

2、 Lifting test method and standard requirements

According to the GB/T 21661-2020 standard, the lifting test must follow the following process:

1. Equipment requirements

Using a specialized testing machine with an amplitude of 30 mm ± 2 mm and a frequency of 2-3 Hz (such as the Ruilai Platinum PLY-03 model), the bag lifting action is simulated through a high-precision vibration control system.

2. Sample preparation

Load simulated objects (such as sand and rice grains) equivalent to the nominal load-bearing capacity, with a volume not exceeding 2/3 of the bag's capacity, ensuring that there is enough slack space at the bag opening.

3. Testing process

Hang the sample on the testing machine and perform 3600 consecutive lifting cycles to observe whether the bag body and lifting strap are damaged, broken, or not.

4. Judgment criteria

If two or more of the three sets of samples are unqualified (with broken straps or damaged bags), the batch of products will be judged as unqualified.

3、 Technical advantages of the Ruilai Platinum PLY-03 testing machine

To improve the efficiency and accuracy of detection, the PLY-03 fatigue tester for Ruilai Platinum Bags has the following characteristics:

-Accurate simulation: By automating pneumatic clamping and preset parameters (amplitude, frequency, frequency), human error is reduced and the usage scenario is realistically restored.

-Strong stability: adopting a high durability mechanical structure, supporting long-term continuous testing, ensuring data reliability.

-Multi functional adaptation: compatible with various bag types such as vest bags and tote bags, and can be extended to testing items such as drop tests and sealing strength.