| 摘要 |
<p>The present invention provides an on-demand, in-situ sponge making device, comprising a precursor container for providing a base paste; a foaming member for providing a the base paste with gas-filled bubbles; an extrusion chamber having an elongated opening for extruding the foamed paste therethrough; and a fixing chamber for drying the extruded paste. The invention further provides a method of manufacturing a sponge, the method comprising foaming a base paste comprising starch and cellulose; extruding the foamed paste through a slit; and drying the extruded paste while it is freely suspended. Lastly, the invention provides a sponge product, comprising a surface layer comprising a porous composition comprising mainly a starch derivative and cellulose; and an interior layer comprising gas-filled bubbles in a moist matrix comprising water, the starch derivative and cellulose; wherein the relative amount by dry weight of the starch derivative preferably exceeds the relative amount by dry weight of the cellulose.</p> |
