| 摘要 |
A method of manufacturing an electric lamp is provided to purify indoor air by emitting a great quantity of negative ions and far infrared rays and to be eco-friendly by having antibiotic, deodorizing, and pollution preventing effects. A method of manufacturing an electric lamp includes the steps of: grinding rough tourmaline(1); washing the electric lamp(2); applying power coating or liquid coating of tourmaline powder to the electric lamp(3); drying the electric lamp applied with the coating of the tourmaline power(4); and packing the dried electric lamp(5). In the power coating step, the tourmaline power is heated for 15 minutes after being coated on the electric lamp by a magnetic field so as to be melted and adhered to the electric lamp. |
