Comparison of leak test method and wit gas

Many industrial products need to be leak-free. It includes not only food, cosmetics, or pharmaceutical packaging, but also products such as lighting, electronics, and plastic parts for the automotive industry. But how can a manufacturer test the airtightness of a product leak?

The entry-level solution is to test in a water bath. This is a very simple yet effective method. Hold the specimen in water and a tester will monitor the rise of air bubbles. It’s very intuitive.

The product does not expand, but is tested in a vacuum chamber. The product inflates itself and air bubbles escape from the leak. The important thing is that you know that the package is leaking and know where it is, so you can detect and eliminate weaknesses in the process.Wit Leak Master Easy It is used by a large number of customers.

Virtually everything that must be leakproof. Often it is a packaging, tubular bag, stand-up pouch, or thermoformed tray, and even vacuum packaging can be easily tested. Mainly related to meat and sausage products, salads, breads, snacks, dairy products, pet foods and medical products. Coffee capsules are also available. Lights, bubble wrap, or plastic parts should also be leak-proof.

If you just want to check for leaks and find the cause of the leak, these devices are certainly very good. However, there are restrictions. Underwater testing usually means that the product can no longer be sold. Also, because the tests are run manually, they place high demands on those who may affect the results.

Leak test using specific test gas and sensor technology. Leak-Master Pro 2 has a device that uses a CO2 sensor to measure the airtightness of leaks in related products. A vacuum is created in the test chamber to draw gas from the leaking package. Parameters such as vacuum and measurement time are pre-defined by the customer, so the test runs automatically. PRO 2 displays the result on a rotating optical signal. If the device lights red, CO2 has been detected and the product is leaking. The tests are completely independent of the inspector, standardized and reproducible. Everything is digitally documented and can be exported.

The more CO2 in the package, the quicker you can find the leak. In most cases, 8-10 seconds will suffice. It can detect leaks of 10 micrometers and above. Micro leaks cause problems for manufacturers. CO2 testing is also non-destructive. After testing, you can sell a leak-free package without any problems, saving you money and money.

Water bath devices offer the cheapest way. They have been proven for many years and work reliably. If you want to know where the product is leaking, you need a water bath anyway. Also, if the product does not contain CO2, or if you are using a vacuum pack, a water bath is best.

For more standardization and automation, CO2 units are suitable because they do not need to be inspected by a human inspector. The results are reliable, even after multiple tests at the end of a long working day. You can test the airtightness of leaks without damaging the product. And finally, testing without water is cleaner and less complex as it does not require regular water changes or cleaning.

Ideally, I have both devices. Use CO2 equipment to perform all spot checks safely and non-destructively. If the package is leaking, you can use a water bath to locate the leak and eliminate the weaknesses.

Only 100% inspection provides 100% certainty. Therefore, you usually need an inline solution. Here, too, machines equipped with CO2 sensors are actually well established.Witz Leak Master MapMax Used by food producers around the world, it guarantees perfect packaging and thus product quality.

Like Pro 2, MapMax receives all packages from the wrapping machine. A vacuum is created in the chamber. The sensor detects the escaping CO2.

There is an alarm directly on the device. In addition, leaking packages can be physically rejected. Everything is fully automated, very fast and reliable. MapMax manages up to 15 cycles per minute.

MapMax is used to directly test entire batches or cartons. There are actually faster machines on the market that apply pressure from the rollers to the package. However, this method is very coarse and only detects very large leaks. This is not enough for most products. In fact, exterior testing is the safest because testing is done at the end of the process. After that, the package will be untouchable and will not be damaged.

Whether random testing or in-line is required depends heavily on the product, packaging, process, expiration date, and distribution channel. But in any case, inline provides maximum trust. Comparison of leak test method and wit gas

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