Seal integrity testing is pivotal in protecting against leaks or defects and ensuring packaging is safe and effective across multiple use cases and industries. For example, in the food and pharmaceutical industries, it helps prevent contamination, which could pose a dangerous health risk to consumers.
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In this article, Kevin Goodison, a product specialist at LIMAB UK, will explain what seal integrity testing is and why it is important. For more information about the various methods available for leak detection and seal integrity testing and guidance on selecting the best solution for your business, use the links at the bottom of the article or contact us by calling +44 (0) , emailing or submitting a contact form.
Leak detection and seal integrity testing is an assessment of the packaging of products to ensure it is free from any defects that could cause leaks like punctures, pinholes or channel leaks in the seal area. Mechanically weak seals may split or break under pressure or in specific environments.
Package seal integrity testing enables manufacturers to determine packaging strength under practical operating conditions.
Before a product reaches the end consumer, it must be packaged appropriately. The role of packaging is twofold:
To protect the product from external contaminants, including oxygen, permeating the product
To stop the packaging contents from leaking out.
With leak detection and seal integrity testing, manufacturers can detect leaks or defects in packaging before despatch. This practice does not only protect consumers ' it also protects the brand. Some processes use the Modified Atmosphere Packaging (MAP) technique to substitute the atmospheric air inside a package. One example is a crisp packet, where nitrogen is introduced to the packaging environment to maintain moisture. If this protective gas leaks out ' or oxygen gets in ' it will accelerate the decomposition process, compromising the product. This spoilage can reduce shelf life, impact food quality and taste and damage the brand's credibility, reputation and sales.
Crisp Packets Need to Seal in Nitrogen to Maintain Moisture Levels
Seal integrity testing is pivotal in protecting against leaks or defects and ensuring packaging is safe and effective across multiple use cases and industries. Learn more about leak detection methods and applications by using the links below:
Explore Our Range of Leak Detection and Seal Integrity Testing Equipment at LIMAB UK
Our team of product specialists at LIMAB UK get to know the unique needs of your business and provide one-to-one support to find the best package leak detection and seal integrity testing method for you. Request a consultation today by calling +44 (0) , emailing or submitting a contact form.
Packaging integrity and seal strength testing are key validation requirements for terminally sterilized medical devices, and demonstrate that the package has retained its seal strength and has no breaches or defects following sterilization, distribution, and aging.
Sterile barrier testing is used in the manufacturing of medical devices, pharmaceuticals, and other products that require a sterile barrier. This testing ensures that the sterile packaging system effectively maintains sterility throughout the product's shelf life and the sterile barrier prevents ingress of microorganisms or contaminants to the product.
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Visual inspection testing is a method for evaluating the seals and material surfaces of flexible packaging to highlights areas of concern for subsequent tests (slits, tears, wrinkles, bubbles, channels in seals, etc.).
Dye penetration testing provides evidence that the sterile seal or surface has not been breached. Dye penetration test methods are applicable to both opaque and non-opaque materials.
Bubble leak testing provides evidence that the sterile barrier has not been breached. In a bubble leak test, the package is submerged underwater while inspecting for a steady stream of bubbles or an ingress into the package after the test.
Bubble leak under vacuum testing provides evidence that the sterile barrier has not been breached. In a bubble leak test, the package is submerged underwater, and a vacuum is applied to the test system while inspecting for steady stream of bubbles during the test or an ingress of the test fluid into the package after the test.
A packaging seal strength test is used to measures the strength of the seals in the packaging material to prevent the package from opening during handling and transportation. Seal strength is typically measured in terms of force required to open or peel apart the sealed layers.
Peel or seal strength testing evaluates the tensile strength of seals in flexible barrier materials. This includes pouches and trays with flexible lids.
Burst testing determines the ability of a package to withstand internal pressurization, pressurizing the package until the internal pressure causes it to burst.
Peel characteristics help ensure the integrity and reliability of the packaging to maintain sterility throughout its shelf life. Seal width measurement testing ensures that the seals on the packaging are of the correct width and meet the required specifications.
We also offer distribution simulation and accelerated and real-time aging services, providing our Customers with a comprehensive offering of validation testing.
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