The main role of adhesives in flexible packaging

Adhesives are indispensable core materials in the flexible packaging industry and can be regarded as the "bridge" between different substrates. Their performance directly determines the quality and application value of flexible packaging. Flexible packaging is mostly composed of multiple layers of materials such as plastic, aluminum foil and paper, and adhesives are precisely the key to achieving a firm bond between the layers.

 

Its primary function is to ensure the stability of the composite structure. Through its strong adhesive force, it enables multiple layers of substrates to form a unified whole, resisting friction and compression during transportation and storage, and preventing delamination and cracking. Meanwhile, high-quality adhesives can enhance the functional adaptability of flexible packaging. For instance, solvent-free polyurethane adhesives can meet the moisture-proof and anti-oxidation requirements of food packaging and extend the shelf life of products. High-temperature resistant adhesives are suitable for special scenarios such as retort pouches, ensuring that the packaging remains intact and sealed after high-temperature sterilization.

 

In terms of safety and environmental protection, adhesives that meet national standards can prevent the migration of harmful substances and safeguard the safety of food and drug packaging. In addition, high-performance adhesives can also be adapted to high-speed lamination production, enhancing production efficiency and reducing enterprise costs. From daily snack bags to lithium battery flexible packaging, adhesives support the diversified development of the flexible packaging industry by precisely matching the demands of different application scenarios, becoming an invisible cornerstone for ensuring the functionality, safety and efficiency of packaging.