Potato plants are grown in abundance in the North of the country, Thailand the number of hundred thousand tonnes per year, as well as with the industrial sector in processing potato products. Potato scraps, which then cause spoilage issues useful by bring a styrofoam cushion production from potato starch. By styrofoam cushion (foam loose-fill) is a type of cushioning foam that resembles a foam cell open. Small pieces are produced from the extrusion process often is made from lightweight expandable polystyrene, physical and mechanical properties and excellent prices but from plastic foam that can be used for a long time to decompose. Result in increased waste. Emissions that cause global warming, which is causing these problems, one of the environmental. Now select the different natural raw materials to replace the use of plastic foam is widely used for. Price is naturally biodegradable after use and reduce environmental pollution problems, so. This research project focused on studying the effect of speed of screw per mechanical and physical properties, morphology, from shock-resistant foam potato starch granules. From forming by extrusion process, so select the speed of the screw that is suitable for the production of beads to get the property corresponds to the use of granular foam cushioning. In addition, cushioning foam Pellet.
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