BAIJIAN - Third party testing organization
This standard specifies the test methods for the sealing performance of flexible packaging components within the scope of the topic. This standard is applicable to the testing of sealed flexible packaging components made of various materials. 2. Test purposes: This standard can be used as one of the following tests: a. Compare and evaluate the sealing process and sealing performance of flexible packaging components; b. To provide relevant basis for determining the technical requirements for the sealing performance of soft packaging components、 c. The sealing performance of soft packaging components after drop and pressure tests. 3 Terminology 3.1 Soft packaging: A soft packaging that requires sealing performance. The packaging material used must not have any defects such as pinholes、 cracks、 unsealed or unsealed seals that affect sealing performance. 3.2 Sealing performance: The characteristic of soft packaging that prevents other substances from entering or the contents from escaping. 4. Test Principle 4-1 Method 1: This method is used for packaging items where the performance of the outer layer material will not significantly decrease during the test under the action of water、 such as packaging items where the outer layer is made of plastic film. By vacuuming the vacuum chamber、 a pressure difference is generated between the inside and outside of the sample immersed in water、 and the gas leakage or water infiltration inside the sample is observed to determine the sealing performance of the sample. 4.2 Method 2: This method is used for packaging cases where the performance of the outer layer material will significantly decrease during the experimental period under the action of water、 such as packaging cases where the outer layer is made of paper material. Method 2 is divided into two methods: A. and B. Method A is used for arbitration testing. 4.2.1 Method A: Fill the sample with the test liquid、 seal it、 and place it on a filter paper to observe the leakage of the test liquid from the inside to the outside of the sample. 4.2. Loosen B by vacuuming the vacuum chamber to create a pressure difference between the inside and outside of the sample. Observe the expansion of the sample and the recovery of the sample shape after releasing the vacuum、 in order to determine the sealing performance of the sample
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific、 fair、 and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsinspection and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered、 meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing、 with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle、 low cost、 and attentive service 7. Possess authoritative qualifications such as CMA、 CNAS、 CAL、 etc 8. The testing report is authoritative and effective、 and is generally used in China