| 摘要 |
<p>PURPOSE:To make a label or printed part easily peeled off or removed from the surface of a container, on which an indicating label is stuck or an indicating printing is made, after the container is used by sticking the label or providing the printing to the container main body through a biodegradable plastic layer. CONSTITUTION:In preparing an indicating label or providing a coloring agent 3 for an indicating printing over the surface of a layer 1 forming a main body of a container that is formed properly by molding of plastic in accordance with application, a biodegradable plastic layer 2 is interposed between the surface of the layer 1 and the label or the coloring agent. A high polymer that is stable under normal usage, but easily degraded by functions of microorganism or mold when thrown into the sea or buried underground is used as a material for the biodegradable plastic 2. For instance, any one of the folowings can be used in the form of simple substance or in the form of combination: 3-hydroxy butylate, 3-hydroxy barylate copolymerized polyester, 3-hydroxy butylate.4-hydroxy butylate copolymerized polyester, polycaprolactone, and cellulose.chitosan mixed polymer.</p> |
