| 摘要 |
1,103,200. Caps for bottles etc.; pipe &c. end protectors. RAYCHEM Ltd. 4 Nov., 1966 [8 Nov., 1965], No. 47247/65. Headings B8C and B8T. [Also in Divisions A4 and D1] A cap for a bottle, tube end &c. is formed by heat shrinking a length of thermoplastic tube 1 over a rigid ring 2, twisting the free end of the tube 1 to seal it, and pushing this twisted end into a recess 3 in the ring 2. The cap is then heat shrunk on to the bottle &c. The cap may be made of an olefine polymer such as polyethylene, polypropylene or polyvinylidene fluoride. The cap may incorporate a heat-fusible insert. To give a flat top to the cap, the top surface irregulatities may be filled with wax. Heat to cause shrinkage may be by conduction, or preferably convection or R.F. heating. The caps may be used to protect the ends of mineral oil insulated cables, pipes, lead cables, ropes or furniture legs. |
