Air blowing tool for heat-shrinkable packing material

摘要

An air blowing tool includes a connecting pipe (1) and an air blowing head (2). The air blowing head includes an inner wall (22), and an outer wall (21). An annular passage (24) is defined between the inner and outer walls. The inner wall encloses and defines a heating space (23) for accommodating a package (3) to be heated. A plurality of evenly distributed outlets (221) is defined in the inner wall. Each outlet is defined at an acute angle relative to the annular passage. Each outlet is progressively flared such that a cross-sectional area of the outlet at the heating space is greater than a cross-sectional area of the outlet at the annular passage.