A heat-seal coating is a layer of special adhesive resin that we apply to a film. This coating enables the film to bond with another film during the heat-sealing process, creating a strong and durable seal. We commonly use heat-seal coatings in flexible packaging to create a seal between two films or between a film and a rigid substrate. This process is essential in ensuring that the packaging is secure and able to protect the product inside from external factors such as moisture and air.