| 摘要 |
The present invention relates to a biodegradable board comprising laminates of nonwoven fabric, which comprises natural fiber and a sheath-core type composite fiber having double layers of inner part and surface layer and its preparation method, and particularly to a biodegradable board comprising at least two layers of nonwoven fabric, which comprises natural fiber and sheath-core type composite fiber comprising biodegradable polylactic acid as a sheath component and resins such as polyethyleneterephthalate, polypropylene and polyethylene as a core component, and its preparation method.
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