Solvent-free polyurethane adhesive is a viscous substrate, which can connect film substrates together by means of their viscosity. They are viscous liquid at normal temperatures. Solvent-free adhesive is mostly adopted for solventless lamination for flexible packaging.
Solventless adhesive for flexible packaging is constantly making technical improvement. The new type of solventless adhesive can completely meet the dry lamination requirements among the most flexible packaging materials and can be used widely in drug & food packaging.
Solvent-free adhesive is a good replacement for solvent adhesive:
- effective reducing the residual solvent, as it is a solvent-free adhesive.
- high Initial adhesion, making it possible for real-time slitting and delivery without a long-time curing.
- lower cost, as it has no extra use of any solvent and heating oven system.
- working environment friendly, reducing pollution and avoiding the risk of fires.
As solvent-free adhesive can be used directly for flexible packaging laminating application without diluting with the solvent.
-effectively reducing the incident of quality problems. Application with a solvent-free composite adhesive product, it can directly see its quality. For the composite of the aluminized film, the solventless adhesive can effective prevent aluminizing transfer.
In the flexible packaging composite industry, the solvent-free adhesive will be the trend of developing in the flexible packaging industry. As an increased awareness of environmental protection and healthy safety for the food packaging, the solvent-free adhesive has become more popular in the market of flexible packaging lamination.
