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US08173730B2 Environmentally friendly material used for making pens 失效
用于制作钢笔的环保材料

Environmentally friendly material used for making pens
Abstract:
A biodegradable polylactic acid material being suitable for the manufacture of articles, such as pens, is the heated mixed product of the following components, 93% by weight to 96% by weight polylactic acid, 0.8% by weight to 1.2% by weight of a chain extender, 0.6% by weight to 1.0% by weight of a nucleating agent, and 2.5% by weight to 5.0% by weight of a filler.
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