MANUFACTURING METHOD OF NEEDLE-SHAPED BRISTLE HAVING SHORT TAPER LENGTH AND TOOTHBRUSH BY SAME MANUFACTURING METHOD
摘要
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.
申请公布号
EP2083653(A4)
申请公布日期
2015.03.18
申请号
EP20060823806
申请日期
2006.11.29
申请人
BEST WHASUNG CO., LTD.;KWON, YOUNG-JUN;KWON, SUNG-WOOK;KWON, SUNG-HWAN