| Best Whasung Co., Ltd. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110233988 | METHOD FOR TAPERING BRISTLE OF A TOOTHBRUSH BY A MECHANICAL METHOD - A method for tapering the bristle of a toothbrush using grinding drums which have protrusions with a height of between 1.5 to 7.0 mm, and which rotate in the vertical and horizontal directions. The method includes a step of connecting the grinding drums in parallel, such that the grinding drums are arranged in sequence wherein the heights of the protrusions of each of the grinding drums are gradually decreased, and a step of enabling the toothbrush with a non-tapered bristle to pass through each of the grinding drums in series such that the bristle can be ground. The method of the present invention produces highly tapered bristle having a tapered length of 5 mm or longer and an end thickness of 0.02 mm or less even without immersing the bristle into chemicals, and prevents thermal deformations which may otherwise occur in the tapering process performed by a mechanical method. | 09-29-2011 |
| 20100115725 | MANUFACTURING METHOD OF NEEDLE-SHAPED BRISTLES HAVING SHORT TAPER LENGTH AND A TOOTHBRUSH BY SAME MANUFACTURING METHOD - The present invention relates to a method of manufacturing a needle-shaped bristle having a short taper length. The method includes preparing a bundle of toothbrush bristles by mixing a polyester resin (a polyester resin other than a PTT resin) and a PTT resin in a ratio of 90˜40 to 10˜60 and spinning the mixture thereof; cutting the bundle of toothbrush bristles; and tapering the cut bundle of toothbrush bristles by immersing it into a chemical. According to the present invention, since needle-shaped bristles having a taper length of 6 mm or less can be efficiently obtained, the needle-shaped bristles can be implanted even in an anchorless toothbrush. | 05-13-2010 |
| 20100102619 | PROCESSING METHOD FOR TAPER OF NEEDLE-SHAPED BRISTLE ENHANCED THROUGHPUT - The present invention relates to a method of tapering a toothbrush bristle which increases production efficiency. The method includes the steps of cutting bundles of toothbrush bristles; and non-directionally immersing the entire cut bundles of toothbrush bristles into a chemical solution to taper both sides of the toothbrush bristles. According to the present invention, the production efficiency of a needle-shaped bristle is increased approximately three times, and the loss of raw materials is greatly decreased because several processes are not performed. | 04-29-2010 |
| 20080289131 | Needle-Shaped Bristle and Method of Manufacturing the Same - The present invention provides a needle-shaped bristle and a method of manufacturing the needle-shaped bristle. The manufacturing method of the present invention includes the steps of cutting and removing a packing sheet, which is wound around a bundle of bristles, by a length ranging from 30 mm to 50 mm from a first end thereof, and grinding first ends of the bristles using a rotating grinder. The manufacturing method further includes steps of packing the first end of the bundle of bristles, from which the packing sheet is removed, using a packing sheet, cutting the bundle of bristles to a length ranging from 22 mm to 32 mm, and immersing a second end of the cut bundle of bristles, thus tapering second ends of the bristles. The needle-shaped bristle has an advantage of realizing a reduction in the proportion of defective products. | 11-27-2008 |
