Solvent-free multifunctional and high-performance adhesive for laminated flexible packaging materials.
Next-generation adhesive for laminating flexible packaging materials that is environmentally friendly, solvent-free, compatible with various laminate materials, and supports fast curing and high line speeds.
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basic information
In the European and American flexible packaging materials industry, as the trend towards solvent-free solutions continues, traditional two-component polyurethane adhesives face limitations in increasing line speeds due to mist generated by the adhesives, which can lead to contamination of the work environment and products. Additionally, the curing time before cutting after lamination can take several days, and if defects are found during quality checks of the laminated products after this period, it results in the waste of several days' worth of production. Furthermore, certain combinations of laminated materials (such as aluminum-coated films with OPP, PET, etc.) may not adhere properly, prompting Clavirit to develop a two-component polyurethane adhesive to address these issues. The specific advantages include: - Minimal increase in viscosity (Table 1), designed to prevent mist generation even at high line speeds → Improvement in workplace cleanliness and product yield - Rapid curing allowing cutting operations to be performed after 8 hours → Increased productivity and reduced work-in-progress time - Formulation with adhesive properties that are compatible with a wide range of materials, regardless of film type → Enables previously impossible combinations With these advantages, two types of formulations are available for material selection based on specific needs: - For liquid encapsulation laminates → PAA (aromatic amine) free with a short time - Cost-effective material options
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Applications/Examples of results
Food-grade retort pouch Food-grade flexible packaging materials For flexible packaging OPP/aluminum foil laminated OPP OPP/PE PET/PE AL/PE Above laminates, etc.
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Company information
Krevelit, which has developed many products such as reactive PUR hot melt ahead of other companies, boasts top-class achievements in the field of PUR (polyurethane) adhesives in Europe. Our Japanese subsidiary, Krevelit Japan, has developed a wide range of products based on PUR as a core technology, including reactive PUR hot melts, single-component PUR adhesives, two-component PUR adhesives, heat-accelerated curing adhesives, field-foamed gaskets (FIPG), and coating materials. We provide maximum productivity improvement and support for new product development tailored to the circumstances of our partner companies in Japan.