Quality of sealing plays an important role in packaging industry to ensure the safety of products. Low quality seals generate issues related to package integrity. Heat sealing process is widely used in packaging products. The process joins thermoplastic materials by applying pressure and heat. As the process needs three variables such as heat, pressure and time, so controlling these variables is necessary to avoid the risk of bad quality welds.
Heat Seal tester is used to seal thermoplastic materials, envelopes, pouches, bags, packaging etc. by applying heat. Heat seal test identifies sealing parameters such as pressure, dwell time and sealing temperature of the material. Thermoplastic materials are polystyrene, PVC (polyvinyl chlorides), polypropylene etc., widely used in manufacturing units to pack consumable products. The packagers conduct heat seal test regularly as a part of the quality system to assure quality to the customers. A poor quality test gives edge leaks, weak seals, and hard brittle areas as a result of overheating and unsealed areas because of low-heating.
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