(Submit Articles) Mosquito coil is mosquito-repelling incense, usually shaped into a spiral, and typically made from a dried paste of pyrethrum powder. The coil is usually held at the center of the spiral, suspending it in the air, or wedged by two pieces of fireproof nettings to allow continuous smoldering. Burning usually begins at the outer end of the spiral and progresses slowly toward the centre of the spiral, producing a mosquito-repellent smoke. A typical mosquito coil can measure around 15 cm in diameter and lasts up to 8 hours. Mosquito coils are widely used in Asia, Africa, and South America.
Pyrethrum was used for centuries as an insecticide in Persia and Europe, and the mosquito coil was developed around 1890s by a Japanese business man, Eiichiro Ueyama. At that time in Japan, people usually mixed pyrethrum powder with sawdust and burned it in a brazier or incense burner to repel mosquitoes. Initially, Ueyama created incense sticks mixed from starch powder, dried mandarin orange skin powder, and pyrethrum powder. However, the bar-shaped mosquito sticks quickly burned up in about 40 minutes, too brief for a long repelling action. In 1895, his wife, Yuki, proposed making the sticks thicker and longer, and curling them in spirals. In 1902, after a series of trials and errors, he finally obtained a desired incense burning effect out of a spirally-shaped mosquito repellent. The method involved cutting from a thick bar of incense to a certain length and manually winding it. This method continued to be used until 1957, where mass production was made possible through machine punching, making a far larger manufacturing scale possible.
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Longyan Tenghui Machinery Co., Ltd. has advanced processing equipment, professional design, develop a series of mosquito production equipment and mixing equipment, mainly, the company independent research and development of fully automatic multi-mode (18 mode) Mosquito coils or other equipment.For more information about mosquito coils equipment,please visit www.fjlyth.com/en/.
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