| 摘要 |
<p>A disposable vase comprises biodegradable material. In one embodiment, the wall of the vase is made of a plastic selected from a biodegradable polymer selected from a polyester and a polymer derived from starch or a mixture thereof, wherein the polymer has a thickness that allows the vase to retain its shape. When it becomes street litter, such a vase decomposes relatively fast. The biodegradable plastic can be selected from polylactates and polyhydroxyalkanoates. Preferably the polyhydroxyalkanoate is chosen from polyhydroxybutanoate, polyhydroxyoctanoate, polyhydroxyvalerate and mixtures thereof. The excellent plastic properties of these polyesters also offer possibilities for use at home, since their environment-friendly character permits the owner of the vase to discard, without feeling embarrassed, a vase that he or she considers less beautiful or of which he or she is tired, and to buy another vase.</p> |
