How to Improve PET Flake Viscosity with SSP Solid State Polycondensation
PET bottle flakes will lose intrinsic viscosity (IV) during recycling and extrusion. Low IV PET material cannot meet the high tensile requirement for cotton strap, packing band and rigid packaging. Solid State Polycondensation (SSP) is the most reliable technology to raise PET flake viscosity without melting the material What causes IV drop of recycled PET…
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