Blister package sealing test method

Blister packs are a method of packaging a product between a blister formed from a transparent plastic sheet and a backsheet (made of cardboard, plastic film or sheet, aluminum foil or their composite material). Blister packaging* was mainly used for pharmaceutical packaging. Now, in addition to the packaging of pharmaceutical products such as pharmaceutical tablets and capsule suppositories, blister packaging is also widely used in the sales and packaging of food, cosmetics, toys, gifts, tools and electromechanical parts. It has the characteristics of light weight, transparent and intuitive, good protection and easy to use.

In the pharmaceutical, food and other industries, the sealing of blister packaging is one of the items that need to be investigated. If the blister packaging is not well sealed, it is easy to shorten the shelf life of the product and cause deterioration of the contents. The instrument for testing the sealing property of the blister package is called a seal tester, a seal tester, a sealer, etc., and the test principle is that the compressed air is used as a power source, and the vacuum chamber is vacuumed by the vacuum generating device. The sample is placed in a vacuum chamber and immersed in the water surface; the vacuum tank is evacuated to cause a difference in internal and external pressure between the sample immersed in the water, and by observing the expansion of the sample or the gas overflow (bubble) in the sample, Determine the sealing performance of the sample. The specific test steps are as follows:

1. Prepare the sample to be tested;
2. Place the sealed canister beside the main body of the seal tester, and simultaneously fill the sealed canister to the platen 10mm (after sealing the canister, press the sample below the water surface without water overflow as the principle, according to the sample Size, self-adjusting water injection);
3. Connect the air pipe, take one air pipe into the sealed tank interface, and insert the other end into the vacuum interface of the main machine, and insert one end of the air supply pipe into the vacuum interface;
4. Connect the power supply and turn on the switch;
5. Set the parameters, according to the specific test requirements, set the required pressure holding time of the test press;
6. Place the sample and place the sample to be tested into a sealed tank so that it is immersed below the water surface;
7. Click the test button to start the test and observe the change of the sample.
8. As a result, if the sample has continuous bubbles, it is judged that the sealing performance of the sample is unsatisfactory. On the contrary, the sealing performance of the sample is good.
9. At the end of the test, take out the sample and proceed to the next set of tests.

The above is the test method for the sealing performance of blister packaging. The WST-02 sealing tester independently designed and produced by Shandong Weishen Electronic Technology Co., Ltd. can be used for the sealing test of blister packaging. The instrument has three levels of management authority. At the same time, the micro-printer can be configured to print and retain the test results, which is convenient for storing and retaining the test data. For details, please call Shandong Weishen Electronic Technology Co., Ltd. for details.

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