Foamed Insulation Box Compound (PLA/PBAT/PBS)

About This Product

A foaming compound built on three polyesters: polylactic acid, polybutylene adipate terephthalate and polybutylene succinate, the last a semi-crystalline aliphatic polyester made from succinic acid and butanediol. The three are melt-compounded and pelletised for foam extrusion and forming. Insulated shipping boxes for chilled food and pharmaceuticals are overwhelmingly expanded polystyrene, and the recipient is left with a bulky item that few kerbside schemes accept. Replacing it means meeting two demands that pull against each other: a foam light and closed-celled enough to insulate at low density, and a wall tough enough to survive handling while cold, which is exactly when a stiff polyester is most brittle. Adding PBS to the PLA/PBAT system improves the toughness and thermal behaviour needed for a box that must survive a cold chain and hold temperature for a stated duration. Thermal performance is validated against your route and duration rather than assumed from the material, because hold time depends on wall thickness, foam density and coolant load as much as on the polymer. Supplied as a raw material for processing on the buyer's own line. We do not produce finished articles. It is used in insulated shipping boxes, cold chain logistics and chilled food delivery. Bio Green Chem supplies this foamed insulation box compound to specification on polymer base, pellet form, foam density, wall thickness and the hold time your route requires.