Volume reduction method for a plastic or metal barrel by cutting and removing sections, calibrating remaining sections and rejoining

摘要

The barrel body(21) is separated into three or more sections and one or more sections(30b, 30d,30f) corresponding to the volume by which the barrel is to be reduced are removed. Remaining sections(30a,30c, 30e,30g) are reassembled and joined together. An Independent claim is made for the process equipment including a cutting unit(31) for cutting the barrel body into three or more sections(30a-30g), a device for removing one or more sections and a joining unit for connecting the remaining sections.