Method and apparatus for marking shrink wrap lid for beverage container

摘要

A reflective hood system for heat-shrinking a film onto an open-topped container includes a reflective hood having a reflective surface, a radiant energy source, and a reflective shield, wherein the reflective shield is located at or near an opening in the reflective hood, and wherein the reflective shield has at least one optical aperture, an optical aperture including an optical surface having areas of higher and lower reflective capability. The reflective hood assembly may further include a reflective shield having two or more optical apertures.