Heat Seal Coatings; Used to Seal Products, Packaging, & Other Thermoplastic Materials Using Heat
Heat seal coatings are thermoplastic coatings used to seal a variety of materials including films, paper, foils, and non-wovens. They are designed to adhere to various substrates by using heat and pressure to form a seal. In flexible packaging, heat seal coatings are widely used to protect food and beverages from the risk of spoilage and contamination during storage and handling. These type of coatings are used in various lidding applications, such as condiments and dairy, and restorable and ovenable containers. Heat seal coatings are available in solvent- and water-based solutions, as well as solid resins. This method guarantees a perfect heat-bond between the two substrates; heat and moisture will not be able to permeate through the bonding. It can be supplied in a wide variety of chemistries and carriers. Low temperature heat seal films are commonly used in the consumer goods and food packaging industries, which in turn increase the demand for heat seal coatings. The most commo