Bi-Component Spinning Compound (PLA/PBAT)

About This Product

Bi-Component Spinning Compound is a PLA/PBAT pairing supplied as a pellet compound for sheath-core fibre spinning. The gap in melting behaviour between the two polymers is the whole point of the construction: PBAT softens and flows at a lower temperature than PLA, so it can be run as the sheath around a PLA core. Bi-component fibre puts a lower-melting polymer on the outside of a higher-melting core, so the fabric can be thermally bonded without melting the structural component. It is how strength and bondability are obtained in one filament. In a single-polymer web the calender has to take the fibre close to its own melting point, and every bond point is then a weak spot where the fibre has lost the orientation that gave it strength; with a sheath-core fibre the bond forms in the sheath while the core stays drawn and load-bearing. The sheath-core ratio is the lever, since more sheath bonds faster and softer and less sheath keeps more of the strength. This compound is formulated for that sheath-core construction in a biodegradable system. Supplied as a raw material for processing on the buyer's own line. We do not produce finished articles. It is used in thermally bonded nonwovens, in technical textiles and in hygiene fabrics. Bio Green Chem supplies Bi-Component Spinning Compound to specification on the sheath-core ratio, the melting behaviour of each component, filament fineness and the bonding window your calender runs.