| 摘要 |
<p>PURPOSE:To obtain a sheet for the packaging of a perishable material and having excellent freshness-keeping performance, at a low cost,by mixing coral sand into a sheet or film. CONSTITUTION:A sheet material composed of a synthetic resin (e.g. polyethylene) is mixed with coral sand having particle diameter of 100-2,000 mesh, preferably 150-500 mesh.</p> |
