Method and device for producing pre-opened bags of plastic film and pre-opened bags

摘要

For the production of bags (1, 1a, 8, 14) from plastic film, each with a closure (2, 2a), in which two layers (3a, 3b) are connected by means of a side weld seam, a closure band (6) is used as a closure (2 , 2a), the closure band (6) consisting of two band-shaped clamping strips (7a, 7b). According to the invention, the closure tape (6) is closed between two opposite layers (3a, 3b) made of plastic film in the transport direction (16) of the layers (3a, 3b). The respective clamping strip (7a, 7b) is then attached to the directly adjacent layer (3a, 3b) according to the invention and, before the side weld seam is produced, the closure tape (6) is opened according to the invention so that a bag (1, 1a, 8, 14) with a pre-opened closure (2, 2a).