| 摘要 |
<p>A process for producing a biodegradable resin foam, having the steps of mixing a starch polymer containing from 5 % by weight to 30 % by weight of water, a vinyl alcohol resin containing from 5 % by weight to 30 % by weight of water, a nonionic surfactant, an inorganic or organic filler, and optionally a thickening agent; optionally adjusting the water content of the mixture, to prepare a composition having from 5 % by weight to 30 % by weight of water on the whole, based on total weight of the composition; melting and expanding it to prepare a foam, which has a low density and fine closed cells, and shows a good surface condition in a molded body.</p> |
