Bostik KP7908 is a tough yet flexible thermoplastic polyester that is designed for solvating or compounding into a high performance adhesive. The finished adhesive will have excellent adhesion to metals, foils and films and can be cross-linked with isocyanate curatives such as Boscodur 21. Cross-linking improves heat and solvent resistance as well as tensile strength.
Bostik KP7908 is most frequently applied from solution, solvent selection is important. KP7908 is soluble in methyl ethyl ketone/toluene blends, cyclic ethers, chlorinated or stronger solvents. When applied via extrusion, the resin must be dried properly first. Applications include:
- Wire and cable wrap applications
- Flexible film packaging
- Flame retardent applications
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