US 12,343,904 B2
Feeding device for feeding fluff and granules into an extruder
Simon Haselmann, Lengerich (DE)
Assigned to WINDMOELLER & HOELSCHER KG, Lengerich (DE)
Appl. No. 17/768,336
Filed by WINDMÖLLER & HÖLSCHER KG, Lengerich (DE)
PCT Filed Oct. 14, 2020, PCT No. PCT/EP2020/078832
§ 371(c)(1), (2) Date Apr. 12, 2022,
PCT Pub. No. WO2021/074184, PCT Pub. Date Apr. 22, 2021.
Claims priority of application No. 10 2019 216 053.0 (DE), filed on Oct. 17, 2019.
Prior Publication US 2024/0140013 A1, May 2, 2024
Int. Cl. B29B 7/60 (2006.01); B29B 7/66 (2006.01); B29B 7/90 (2006.01); B29C 48/25 (2019.01); B29C 48/285 (2019.01); B29K 105/26 (2006.01)
CPC B29B 7/603 (2013.01) [B29B 7/60 (2013.01); B29B 7/66 (2013.01); B29B 7/905 (2013.01); B29C 48/2563 (2019.02); B29C 48/2567 (2019.02); B29C 48/287 (2019.02); B29C 48/288 (2019.02); B29C 48/2886 (2019.02); B29C 48/297 (2019.02); B29K 2105/26 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A feeding device for feeding fluff and granules into an extruder, said feeding device comprising:
a supplying apparatus with an outlet-side pipe piece for the granules, with which the granules can be fed while forming a granule column, the pipe piece being connected to an inlet opening of the extruder; and
a funnel with a funnel outlet for supplying the fluff, an auger being provided within the funnel for conveying the fluff, the auger projecting through the funnel outlet and into the pipe piece, the fluff being conveyable within the granule column,
the auger including an auger first part that is disposed within the funnel, and an auger second part that is disposed within the pipe piece below the funnel outlet, with the auger second part having a width that is wider than the width of the funnel outlet so as to convey within the pipe piece parts of the granules and/or to compact the fluff by functioning as a compacting device.
 
5. A method for feeding fluff and granules into an extruder with the feeding device of claim 1, said method comprising:
feeding the granules are fed with a supplying apparatus having an outlet-side pipe piece while forming a granule column, the pipe piece being connected to an inlet opening of the extruder, supplying the fluff being supplied with a funnel having a funnel outlet, the fluff being conveyed within the funnel with an auger, the auger projecting through the funnel outlet and into the pipe piece, the fluff being conveyed within the granule column,
the auger also conveying parts of the granules and/or compacting the fluff.