Abstract: A cable reel having cardboard ends and core which are reinforced by a hollow plastic axis having flanges secured to each end, the flanges pressing against the outer surfaces of the ends and being held to the axis by sonic-welding.

Abstract: A method of assembling a cardboard reel with a reinforcing plastic axis, comprising the steps of: securing a first plastic flange to the end of a hollow plastic axis by spinwelding; passing the free end of the axis through cardboard end plates and a hollow core, that form a reel; and spin welding a second flange to the end of the axis.

Abstract: An apparatus for producing plastic caulking cartridges is disclosed. The apparatus includes a support having a plurality of work stations disposed about it. A mechanism feeds plastic cylindrical tubes to the support and an indexing plate intermittently moves the tubes to the work stations. A plastic spout is fed to a spin welding station, and is spin welded to a tube. The spout welded to the tube thus forms a cartridge. The cartridge is moved to a trimming station where a trimmer cuts off the flash produced during the spin welding operation. Thereafter, the cartridge is conveyed to a dispensing station and the cartridge is dispensed from the work table.

Abstract: A cartridge from which caulking or other similar materials can be dispensed is made by joining first and second members to each other along corresponding annular surfaces as they are rotated relative to each other and pressure is applied to bring them into contact.

Abstract: A first plastic closure member has a peripheral portion including a flange adapted to be secured to an opening in a container and a central frangible section integrally connected to the peripheral portion by a thin plastic portion which surrounds the central section. The central section is substantially flat and disc shaped and is devoid of any pull tab means extending upwardly therefrom. A tab element forms part of the central frangible section, lies in the same plane as the remaining parts of the central section and is integrally connected threto by a thin plastic portion which surrounds the element. A second plastic closure member is adapted to be releasably secured to the peripheral portion of the first closure member.