On any production line, the package sealing system plays a critical role: protecting the product, ensuring its preservation, and guaranteeing the end consumer’s experience. However, not all sealing systems are the same, and a wrong choice or incorrect execution can compromise the integrity of the package, leading to unnecessary costs, returns, or even legal issues.
At SM Tecnic, with more than 20 years of experience in technical sealing solutions for sectors such as food, cosmetics, and pharmaceuticals, we share the most frequent mistakes we see in the industry and how to prevent them with proper planning, suitable materials, and specialized advice.
1. Using an unsuitable sealing system for the type of product
One of the most common mistakes is applying the same sealing type to products with very different characteristics. For example, a pressure-sensitive adhesive may work well with dry products but not provide the necessary safety for liquids, sauces, or creams.
➡ How to avoid it: choose the sealing system based on the product’s viscosity, sensitivity to oxygen or humidity, and the type of packaging. At SM Tecnic, we develop solutions such as Inducseal or Induflex (for induction sealing) and SM Flex PS (for pressure sealing), tailored to each need.
2. Not considering compatibility between packaging material and seal
The packaging material directly affects sealing effectiveness. Some surfaces do not respond well to heat or have adhesion problems with certain adhesives or metallic layers.
➡ How to avoid it: ensure that the seal and packaging are thermally and chemically compatible. At SM Tecnic, we analyze each packaging’s characteristics before defining the most suitable technical solution.
3. Lack of uniformity in applied pressure or temperature
In both pressure sealing and induction sealing, irregular application can cause defects such as air bubbles, areas without adhesion, or even seal breakage during transport.
➡ How to avoid it: carry out regular calibration tests on machinery and ensure that application parameters are correctly adjusted. Airtight sealing is only possible when pressure, time, and temperature are balanced.
4. Neglecting the production environment
Dust, moisture, or product residues can interfere with the sealing process. A dirty or damp edge on the package is enough to prevent proper seal adhesion.
➡ How to avoid it: maintain a clean and controlled environment, especially in critical areas of the line. Including automatic cleaning systems or inspection stations helps detect errors before the package advances in the process.
5. Not validating the system with integrity tests
In many cases, the sealing system is considered valid after just a few tests. But problems may appear later during transport or storage.
➡ How to avoid it: perform integrity tests and transport simulations before starting mass production. At SM Tecnic, we work with our clients during the testing phase to ensure that each solution meets the product’s real conditions.
The importance of specialized technical advice
Choosing the right package sealing system is not only about materials but also about understanding the process, usage conditions, and sector regulations. At SM Tecnic, we work with production lines from different industries, offering customized solutions that combine safety, efficiency, and adaptability. Common mistakes can be avoided with the support of a technical team that understands everyday challenges. If you are developing new packaging or need to improve the reliability of your current sealing, we are here to help.
Contact our team for a no-obligation technical diagnosis.
