Different bottle materials require different types of liners. For glass bottles, heat-seal liners are often the preferred option. These liners are activated by heat and form a strong, airtight bond with the bottle mouth once sealed using specialized equipment.
They are commonly used in sauces, preserved foods, or any product that goes through high-temperature sterilization. Heat seal liners provide excellent sealing strength and can also serve as a tamper-evident feature.
Although they require additional sealing equipment, heat seal liners remain the top choice for brands that prioritize product integrity, long-term storage, and leak prevention.