Patent ID: 6744976
Filing Date: 2004-06-01
Classification: B29C,B65B

Abstract:
A hot airflow generation device for supplying hot airflow to heat and shrink a heat-shrinkage film wrapping around an article, the hot airflow generation device comprising:a casing defining a channel through which the article wrapped by the heat-shrinkage film is conveyed; a hood arranged inside the casing and forming air passages with the casing, each air passage forming an exit opening, the hood comprising walls forming an air intake port in communication with the air passages; an air driving device for drawing air into the air intake port and then into the air passages; a plurality of heaters arranged inside the air passages for heating air flowing therethrough; a plurality of airflow guides, each said airflow guide being arranged inside each said air passage for controlling air flow rate and direction through said associated exit opening; and, wherein air is drawn into the air intake port and driven through the air passages in which the air is heated to become hot airflow which flows toward the article through the exit openings, the air bouncing from the article and drawn into the air intake port and the air passages again for circulation and being heated again.