US 11,986,977 B2
Method and reprocessing installation for reprocessing film waste material
Marina Matta, Gemmingen (DE); Jochen Schofer, Stuttgart (DE); and Leonid Liber, Rutesheim (DE)
Assigned to Coperion GmbH, Stuttgart (DE)
Filed by Coperion GmbH, Stuttgart (DE)
Filed on Sep. 22, 2021, as Appl. No. 17/481,762.
Claims priority of application No. 20198472 (EP), filed on Sep. 25, 2020.
Prior Publication US 2022/0105662 A1, Apr. 7, 2022
Int. Cl. B29B 17/00 (2006.01); B29B 7/14 (2006.01); B29B 7/60 (2006.01); B29B 17/02 (2006.01); B29B 17/04 (2006.01)
CPC B29B 17/0005 (2013.01) [B29B 7/14 (2013.01); B29B 7/60 (2013.01); B29B 17/0026 (2013.01); B29B 17/02 (2013.01); B29B 17/04 (2013.01); B29B 2017/0224 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for reprocessing film waste material, comprising the following steps:
providing film waste material,
comminuting the film waste material into recycling material by means of a comminuting device,
feeding the recycling material into a multi-shaft screw machine by means of a feeding device,
plasticizing the recycling material into a material melt by means of the multi-shaft screw machine, and
processing of the material melt by means of the multi-shaft screw machine to raw material,
wherein the feeding device comprises a feed screw machine, the feed screw machine has a free cross-sectional area A1 and the multi-shaft screw machine has a free cross-sectional area A2, and wherein A1>A2.