公开(公告)号：US09725647B1

公开(公告)日：2017-08-08

申请号：US15289953

申请日：2016-10-10

申请人： Techid Limited

发明人： Kwok Keung Chan ,  Chun Yu Yeung ,  Chin Ho So

IPC分类号： D01F1/04 ,  C09K11/77 ,  D01F1/00 ,  D01F6/00 ,  D01D5/12

CPC分类号： C09K11/7791 ,  D01D5/12 ,  D01F1/00 ,  D01F1/04 ,  D01F1/06 ,  D01F6/00 ,  D01F6/04 ,  D01F6/06 ,  D01F6/10 ,  D01F6/22 ,  D01F6/24 ,  D01F6/60 ,  D01F6/62 ,  D01F6/64

摘要： An anti-counterfeiting yarn includes a uniformly distributed up-conversion fluorescent material and a polymer, wherein the up-conversion fluorescent material comprises a maximum weight percent of about 1.8%. A method of preparing an anti-counterfeiting yarn includes mixing functional polymer chips containing up-conversion fluorescent material with polymer chips not containing up-conversion fluorescent material in a ratio such that the fluorescent material is uniformly distributed in the mixture, melting the mixture, extruding the melt into filaments, and producing anti-counterfeiting yarn through spinning and drawing the filaments.