Warm-keeping polyester yarn

The utility model discloses a warm-keeping polyester yarn, which belongs to the technical field of textile, comprises a yarn core, and is characterized in that a plurality of connecting yarns are arranged on the yarn core, supporting yarns are arranged among the connecting yarns, two ends of each supporting yarn are fixedly connected with the connecting yarns, and warm-keeping cavities are formed among the yarn core, the connecting yarns and the supporting yarns. The supporting yarn can be connected with the yarn core through the connecting yarn, meanwhile, the supporting effect is achieved, a warm-keeping cavity is formed among the yarn core, the connecting yarn and the supporting yarn, air is not prone to circulation after entering the warm-keeping cavity, and the warm-keeping effect is effectively achieved. 本实用新型公开一种保暖涤纶丝，属于纺织技术领域，包括纱芯，其特征在于：所述纱芯上设置有若干连接纱，若干所述连接纱之间设置有支撑纱，所述支撑纱的两端均与连接纱固定连接，所述纱芯、连接纱及支撑纱之间形成有保暖腔，本实用新型通过连接纱能够将支撑纱通过连接纱与纱芯连接，同时也有着支撑的作用，从而使得纱芯、连接纱以及支撑纱之间形成了保暖腔，使得空气进入到保暖腔后不易流通，有效的起到了保暖的作用。