| 摘要 |
The present invention relates to a color sharp pencil lead comprising 25-45 wt% of a powdered processed pigment and 55-75 wt% of a processed resin gel. The color sharp lead according to the present invention provides writing utensils which are not easily broken when being used by having high bending strength; are easily handled to be easily bent by having high elasticity with increased bending strength; are not affected by writing speed, shaping, rainy season (moisture), and texture of paper; are an environmentally-friendly product harmless to a human body by preventing leakage of a toxic material by using a processed resin manufactured by using a vegetable plasticizer, and safely used by children; and have high definition of color, have 50 or more various pastel colors to reduce stress of eyes watching the colors for a long time, and enable sketch of various expressions such as writing and graphics. |
