Plastics closure clamp - for thermoplastic welding to opening in plastics container e.g. barrel

摘要

The clamp comprises a cylindrical, vertical, internally, threaded neck, a centring guide, an annular collar with upper and lower surfaces in one of which is a device facilitating welding to the container wall, and a circumferentially enlarged lip at the top of the neck for receiving a cap. which resists sudden opening.