Laser cutting device for thin sheets of foil has laser cutting head with laser beam focussing optic restricting angle of beam to ten degrees which keeps material residues loose for easier removal

摘要

A laser cutting device (100) has a laser cutting head (14) with a laser beam focussing optic (30) which restricts the focussing angle of the laser cutting beam (31) to 10 +- 1[deg]. The beam outlet orifice (24) of the beam outlet nozzle (140) has a diameter of between 4 and 16 mm, preferably between 5 and 12 mm. The cutting device moves above the laminate web (19) being cut at a distance (C ) corresponding to 5 to 6.5 times the diameter of the beam outlet orifice. The laminate web being cut is preferably formed from resin-coated or fibre-impregnated paper. The laser cutting head can be moved along the guide web inside a modular housing (190) which has a wedged tapering zone (195) with slit opening (191) for the laminate web (19).Elastomer sealing lips (193) are formed at the edges of the slit opening.