Cold Crack Resistance (Cold and Heat Resistance) Test of Products
Cold Crack Resistance (Cold and Heat Resistance) Test of Products
- Test Purpose During the research and development of new products such as plastic packaging for products, plastic empty bottles wholesale, and matching pump bottle dispensers, or the production of bottle and pump- products using new materials, these products face complex and diverse usage environments. Abrupt changes in temperature can have a severe impact on the performance and structural stability of the products, leading to product damage and failure to function normally.
To ensure that new products and products made with new materials can maintain good performance and structural integrity under different temperature conditions, meeting market demands user expectations, this cold crack resistance (cold and heat resistance) performance test is conducted to verify the product's adaptability in extreme temperature environments.
- Low Temperature Test
1. Test Conditions The equipment used in this low-temperature test is a professional refrigerator that can accurately control the temperature. The test temperature is set to -1℃, simulating the extreme low-temperature environment in winter in some cold regions, which can effectively test the product's endurance at low temperatures. The test duration is set to48 hours, which is sufficient for the products to fully absorb the effects of the low-temperature environment and more comprehensively expose any issues that may arise in products under low- conditions.
- Test Method Select a certain number of finished treatment pumps wholesale, assembled pump bottle dispensers, etc. as test samples. Conduct a comprehensive inspection of samples before the test to ensure that there is no initial cracking, deformation, or other defects, to guarantee the accuracy and fairness of the test.
Arrange the checked and qualified assembled products neatly and orderly into a refrigerator that has been pre-set to a temperature of -15℃, ensuring that the products do not press against each other and that each can fully contact the low-temperature environment in the refrigerator. Strictly follow the set test duration and let the products sit in the -15℃ refrigerator for 48.
During this period, closely monitor the operation status and temperature stability of the refrigerator to avoid inaccurate test data due to equipment failure. After the 48-hour test duration, the refrigerator and take out the plastic packaging for products, etc., place them in a normal temperature environment for a period of time, and then observe and inspect the products after their has returned to normal.
- Passing Criteria After observing and inspecting the plastic empty bottles wholesale, treatment pumps wholesale, etc. that have undergone the lowtemperature test, if the products show no cracking, deformation, or other negative phenomena, then the product is deemed to have passed the low-temperature resistance test; if the products show negative phenomena such as cracking or deformation, then the product is deemed to have failed the low-temperature resistance test.
3. Thermal Durability Test
1. Test Conditions
For this thermal durability test, professional constant temperature chamber is used, which is capable of precisely controlling both temperature and humidity simultaneously. The test temperature is set at 50℃, simulating the high temperatures of summer the high-temperature environments that products may encounter in certain specific usage scenarios.
The relative humidity is set at 80%, simulating a humid high-temperature environment, which better test the product's performance under harsh temperature and humidity combinations. The test duration is also set at 48 hours to ensure that the products can fully endure the effects of temperatures and humidity.
- Test Method
Again, select the same number of assembled finished products as the cold resistance test as the test samples. Conduct a comprehensive and structure check on the samples before the test to eliminate any samples with initial problems, ensuring the consistency and validity of the test samples. Place the qualified test samples into the constant temperature that has been calibrated to 50℃ and 80% relative humidity.
Arrange the samples such as bottles and pumps reasonably to avoid mutual shading between samples, ensuring each sample is evenly exposed to the set temperature and humidity environment. Start the constant temperature chamber, allowing the products to remain in a 50℃ and 80% relative environment for 48 hours. During the test, regularly check the temperature and humidity display of the constant temperature chamber to ensure that the equipment is always in normal operation.
After the 48-hour test, turn off the constant temperature chamber and wait for the temperature inside to drop to near room temperature before removing the products. Conduct a comprehensive and meticulous and inspection of the products' appearance, structure, etc.
3. Passing Criteria
If the products that have undergone the thermal durability test show no deformation discoloration, or structural failure during observation and inspection, the product is deemed to have passed the thermal durability test; if any of these undesirable conditions occur, the product is determined have failed the thermal durability test.
4. Significance of the Test
By conducting the above strict cold resistance and thermal durability tests, potential quality issues of products and products made with new materials in extreme temperature environments can be discovered in a timely manner.
For products that pass the test, it can provide strong quality assurance for their launch into market and enhance user trust in the products. For products that fail the test, the R&D and production departments can analyze the reasons for the problems discovered during the test, make targeted improvements and optimizations to the product design, material selection, or production process, thereby enhancing the overall quality and market competitiveness of the products and reducing customer complaints and after-sales caused by temperature and humidity problems in actual product usage, laying a solid foundation for establishing a good brand image for the enterprise.
