Tubular container and method of manufacture

摘要

The invention provides a method of manufacturing a mono-layer polyolefin package (9) for isocyanate glue, by subjecting a relatively thin walled package (9) (wall thickness about 0.5-0.6 mm) to a dose of ionising radiation of above 50 kilograys. The ionising radiation causes cross-linking of the polyolefin, reducing the oxygen permeability of the resulting package to a level satisfactory for packaging isocyanate glues. The invention further comprises a package having a wall thickness of between 0.5 and 0.6 mm and a cross-linking ratio of greater than 60%. <IMAGE>