Sachet closing device, has male section and female section carried by respective support webs, where webs are respectively formed of cores, covering and welding layers on external surface, and non welding layers on internal surface

摘要

The device has a male section (10) and a female section (20) carried by respective support webs (12, 22). The sections are projected with respect to the support webs. The webs are respectively formed of cores (210, 220), covering and welding layers (212, 222) on an external surface of the webs, and non welding layers on an internal surface of the webs. The welding layers and non welding layers have thickness less than 100 micrometers.