| 摘要 |
<p>In the present invention, provided is an insulating structure of a down product, which resolves the problem that air flows in along with sewn-through line and down flows out along with a sewn-through needle hole. A design used for making another pocket in a hollow tube made in the sewn-through structure provides an obstacle to reduce movement of insulating materials. The sewn-through structure of the present invention is allowed to control collection and size of a valve strip with pockets compared with a normal sewn-through structure, thereby enabling the down to be easily put in the pocket and restricting movement of the down in a distinguished tunnel.</p> |
