| 摘要 |
<p>A one-piece plastics tie for tying about the neck of a bag comprises an elongate strap 10 provided with a series of serrations 11 on one side thereof and with an apertured head 12 at one end thereof, and a pawl 14 disposed in the head aperture 13 for engaging the strap serrations 11 when the strap 10 is passed through the head aperture, the strap 10 being provided with a series of teeth 20 on one side thereof for gripping the neck of the bag about which the tie is to be applied, each tooth 20 having surfaces 21 which are alternately inclined across the width of the strap. The neck of the bag is pinched into the channels between adjacent teeth 20 and thus it is difficult to slide the tie axially of the neck, since the surfaces of the teeth 20 lie at an opposed angle to the direction of movement. <IMAGE></p> |
