公开(公告)号：US20200378039A1

公开(公告)日：2020-12-03

申请号：US16933406

申请日：2020-07-20

申请人： Kam Cheung KOO

发明人： Kam Cheung KOO

IPC分类号： D02G3/32 ,  D03D15/08 ,  D03D15/00 ,  D06B9/00 ,  D06M11/05 ,  D02G3/44

摘要： Techniques for producing an article having hollow structures are described herein. The disclosed techniques include weaving a plurality of yarns to form a woven fabric, wherein the plurality of yams each comprise a dissolvable core, and the dissolvable core comprises polyvinyl alcohol (PVA) having a water solubility; neutralizing an alkaline before drying the woven fabric to maintain the water solubility of the PVA; and washing the woven fabric or a garment made by the woven fabric to at least partially remove the dissolvable core.