The plant biomaterial sponge(PBM-S) is a high foaming elastic compound of natural plant-based polymer and small quantity of resin,the natural plant-based polymer itself is a mixture of starch,fiber powder,plant glue and plant oil,with special improvement process and high temperature extrusion foaming forming process.The PBM-R appears to be white or colored,various shapes like globe,strip,sheet or abnormal shape.Its special formulation and processing are listed into China patent for invention（Patent#：ZL00114543.6、ZL00114541.X)  Properties       Lightweight,elastic,non-hygroscopic,non-mildewed,non-insect attractive and good touch。       By changing the foam forming die,PBM-S can be moulded into various shapes,globe,strand,band,sheet or panel with selective sizes。       Good heat pressure shaping ability and secondary heat pressure forming,good for processing to thinset lining such as insole and tray.。       Originated from mother nature biomass,no hazardous substance。       Commercial products can be disposed freely,degradable in garbage landfills and or composts。       Higher performance price ratio than pearl wool and foamed polymer with its excellent overall performances and lower costs 。  Applicayins       PBM-S processed shock absorption packaging materials can be used to fill and cover the commodity to form a dense cusion layer,buffering to protect the commodity in transit。       PBM-S processed panels can be moulded and diecut into types of elastic underlays,such as insole, shoe linings,case pad and packaging materials,featuring with hygiene,venting,no-falling,lightweight,soft and user friendly。  Performance Parameters Item   Parameter Measurement Property Apperance Elastic foam with shapes of globe,strip,sheet,panel or abnormal shape     Color White or colored   Property Density 21.2 kg/m3   Tensile 0.07 Mpa   Moist content 9.5 %   Expansio 40     Static compressions   Degradatio   Biodegradation tested at grade IV,degraded by micrbes.    Inspection and Test       Approved by Hubei Provincial Quality Monitoring Bureau and China Environmental Products Quality Monitoring and Inspection Center,and certified by EU SGS and the USA FDA  Usage       PBM-S can be directly laid into packaging containers,used as filler between spaces to absorb shock in transit.       If commodity is a porous structure,to avoid the PBM-S rolling inside commodity,use bag to contain the materials to insert into the spaces between commodity and master container       PBM-S sheets can be heat pressed and diecut into types of elastic underlays,such as insoles,shoe linings,container pads and linings.  Shelf Life     Two years in airtight storage