| 摘要 |
In a method for the continuous manufacture of drip irrigation tubes which comprise a tube body (1) into which dosing elements are set (6), a hole is created in the walling of the tube body (1). This takes place by means of a laser beam (13) which is directed by an optical device (16). This optical device (16) has the effect of converting the laser beam (13) into the form of a ring, a line (19) of high energy density being formed corresponding substantially to the ring shape at a separation (a) from the optical device (16), whereby a particle (20) is cut from the walling. |
