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 .