with screw and additionally other mixing elements on the same shaft

Industry

CPC
B29B7/421

This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B29Plastic substance processing B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED MAKING GRANULES OR PREFORMS RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS B29B7/00Mixing Kneading

Current Industry

B29B7/421with screw and additionally other mixing elements on the same shaft

Industries

Patents Grantslast 30 patents

Information Patent Grant
Method for preparing pure chitosan fiber
- Patent number 11,866,850
- Issue date Jan 9, 2024
- WENZHOU JIAYUAN BIOTECHNOLOGY CO. LTD
- Liang Lin
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Asymmetrical three-blade screw-type shaft for a mixing and kneading...
- Patent number 11,779,891
- Issue date Oct 10, 2023
- BUSS AG
- Martin Schötzau
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
3D printed material, structure and method for making the same
- Patent number 11,718,690
- Issue date Aug 8, 2023
- Mighty Buildings, Inc.
- Vasily Korshikov
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method of producing powder coating material
- Patent number 11,708,496
- Issue date Jul 25, 2023
- AGC Inc.
- Lei Luo
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Grant
Double-bladed worm shaft for a mixing and kneading machine, wherein...
- Patent number 11,504,680
- Issue date Nov 22, 2022
- BUSS AG
- Martin Schötzau
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Kneading disc having band portion with bent part, screw element and...
- Patent number 11,376,760
- Issue date Jul 5, 2022
- The Japan Steel Works, Ltd.
- Takahide Takeuchi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Mixing and kneading machine with receiving areas for kneading eleme...
- Patent number 11,331,634
- Issue date May 17, 2022
- Martin Schötzau
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Torpedo for extruder
- Patent number 11,305,460
- Issue date Apr 19, 2022
- Compagnie Generale des Etablissements Michelin
- Christophe Bessac
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
3D printed material, structure and method for making the same
- Patent number 11,267,913
- Issue date Mar 8, 2022
- Mighty Buildings, Inc.
- Vasily Korshikov
- B33 - ADDITIVE MANUFACTURING TECHNOLOGY
Information Patent Grant
Device for the successive introduction of additives into a polymer...
- Patent number 11,247,185
- Issue date Feb 15, 2022
- Matthias Ginster
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Extruder screw with alternately-arranged conveyance portions and ex...
- Patent number 11,229,889
- Issue date Jan 25, 2022
- SHIBAURA MACHINE CO., LTD.
- Akiyoshi Kobayashi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Extruder screw including conveyance portions and paths within the c...
- Patent number 11,230,033
- Issue date Jan 25, 2022
- SHIBAURA MACHINE CO., LTD.
- Akiyoshi Kobayashi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method for producing a densified material from a complex film, prod...
- Patent number 11,135,630
- Issue date Oct 5, 2021
- Armor
- Fanny Vidalat
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Device and method for dispersing solids, liquids and gases in an ex...
- Patent number 11,045,977
- Issue date Jun 29, 2021
- Covestro Deutschland AG
- Thomas König
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Screw for injection molding machine, injection molding machine, and...
- Patent number 10,766,178
- Issue date Sep 8, 2020
- U-MHI PLATECH CO., LTD.
- Munehiro Nobuta
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Apparatus for extruding plastic materials
- Patent number 10,744,697
- Issue date Aug 18, 2020
- REDETEC INC.
- Alex W. Kay
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method for producing fiber reinforced cementitious slurry using a m...
- Patent number 10,646,837
- Issue date May 12, 2020
- United States Gypsum Company
- Ashish Dubey
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Saponified ethylene-vinyl ester copolymer composition pellet, and p...
- Patent number 10,570,266
- Issue date Feb 25, 2020
- Mitsubishi Chemical Corporation
- Tomonori Yoshida
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Mixing section for plastic extrusion screw
- Patent number 10,513,051
- Issue date Dec 24, 2019
- Reifenhäuser GmbH & Co. KG
- Terry Wayne Williams
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Independently driven device for use with plastic melt feed screw
- Patent number 10,406,722
- Issue date Sep 10, 2019
- Jeffrey A. Myers
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Device for extruding elastomer mixtures
- Patent number 10,343,322
- Issue date Jul 9, 2019
- Compagnie Generale des Etablissements Michelin
- Arnaud Letocart
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Process for the extrusion of plastics tending to adherence
- Patent number 10,112,320
- Issue date Oct 30, 2018
- Entex Rust & Mitschke GmbH
- Harald Rust
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method and apparatus for increasing the intrinsic viscosity of a po...
- Patent number 9,908,263
- Issue date Mar 6, 2018
- NEXT GENERATION RECYCLINGMASCHINEN GMBH
- Thomas Pichler
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Protective elements made of polyolefin hot-melt adhesives
- Patent number 9,725,627
- Issue date Aug 8, 2017
- Henkel AG & Co. KGaA
- Claudia Blodig
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Elastomer composition for a tire object having a self-sealing property
- Patent number 9,677,025
- Issue date Jun 13, 2017
- Compagnie Generale des Etablissements Michelin
- Bozena Voge
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Pellet mill with an improved feed system and a method of forming pe...
- Patent number 9,616,605
- Issue date Apr 11, 2017
- Andritz AG
- Jesper Blok
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method of manufacturing a self-sealing composition
- Patent number 9,593,266
- Issue date Mar 14, 2017
- Compagnie Generale des Etablissements Michelin
- José Merino Lopez
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Kneading degree adjusting mechanism, extruder, continuous mixer, kn...
- Patent number 9,463,581
- Issue date Oct 11, 2016
- Kobe Steel, Ltd.
- Kazuo Yamaguchi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Thermally conductive plastic compositions, extrusion apparatus and...
- Patent number 9,434,870
- Issue date Sep 6, 2016
- Momentive Performance Materials Inc.
- Chandrashekar Raman
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method for producing molded product, method for producing molded pr...
- Patent number 9,421,704
- Issue date Aug 23, 2016
- Hitachi Maxell, Ltd.
- Atsushi Yusa
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Information Patent Application
TREATMENT ELEMENT FOR TREATING MATERIAL BY MEANS OF A SCREW MACHINE
- Publication number 20240042649
- Publication date Feb 8, 2024
- Coperion GmbH
- Johannes HEYN
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
ASYMMETRICAL THREE-BLADE SCREW-TYPE SHAFT FOR A MIXING AND KNEADING...
- Publication number 20230249143
- Publication date Aug 10, 2023
- BUSS AG
- Martin Schötzau
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
DOUBLE-BLADED WORM SHAFT FOR A MIXING AND KNEADING MACHINE, WHEREIN...
- Publication number 20230077542
- Publication date Mar 16, 2023
- BUSS AG
- Martin Schötzau
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
3D PRINTED MATERIAL, STRUCTURE AND METHOD FOR MAKING THE SAME
- Publication number 20220002451
- Publication date Jan 6, 2022
- Mighty Buildings, Inc.
- Vasily Korshikov
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
TWIN-FLIGHT SCREW SHAFT FOR A MIXING AND KNEADING MACHINE
- Publication number 20200282598
- Publication date Sep 10, 2020
- BUSS AG
- Martin Schötzau
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
SCREW DESIGNS FOR USE WHEN MOLDING PRODUCTS THAT INCLUDE SHEER SENS...
- Publication number 20200282599
- Publication date Sep 10, 2020
- Integrated Composite Products, Inc.
- Ronald Clare Hawley
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
ASYMMETRICAL THREE-BLADE SCREW-TYPE SHAFT FOR A MIXING AND KNEADING...
- Publication number 20200247008
- Publication date Aug 6, 2020
- BUSS AG
- Martin Schötzau
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Maxflow Flow Inducement System
- Publication number 20200031016
- Publication date Jan 30, 2020
- Nick Schott
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
METHOD FOR PRODUCING A DENSIFIED MATERIAL FROM A COMPLEX FILM, PROD...
- Publication number 20200023555
- Publication date Jan 23, 2020
- ARMOR
- Fanny VIDALAT
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Composition of 3D printing construction material
- Publication number 20190248932
- Publication date Aug 15, 2019
- Mighty Buildings, Inc.
- Vasily Korshikov
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
KNEADING DISC, SCREW ELEMENT AND EXTRUDER
- Publication number 20190240867
- Publication date Aug 8, 2019
- The Japan Steel Works, Ltd.
- Takahide TAKEUCHI
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
DEVICE AND METHOD FOR DISPERSING SOLIDS, LIQUIDS AND GASES IN AN EX...
- Publication number 20180354159
- Publication date Dec 13, 2018
- COVESTRO DEUTSCHLAND AG
- Thomas König
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
PROCESS FOR THE EXTRUSION OF PLASTICS TENDING TO ADHERENCE
- Publication number 20150283728
- Publication date Oct 8, 2015
- Harald RUST
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
A PELLET MILL WITH AN IMPROVED FEED SYSTEM AND A METHOD OF FORMING...
- Publication number 20140167313
- Publication date Jun 19, 2014
- Andritz AG
- Jesper Blok
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
THERMALLY CONDUCTIVE PLASTIC COMPOSITIONS, EXTRUSION APPARATUS AND...
- Publication number 20140080952
- Publication date Mar 20, 2014
- Chandrashekar Raman
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
THERMALLY CONDUCTIVE PLASTIC COMPOSITIONS, EXTRUSION APPARATUS AND...
- Publication number 20140080951
- Publication date Mar 20, 2014
- Chandrashekar Raman
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
METHOD FOR PRODUCING MOLDED PRODUCT, METHOD FOR PRODUCING MOLDED PR...
- Publication number 20140004335
- Publication date Jan 2, 2014
- Hitachi Maxell, Ltd.
- Atsushi YUSA
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Elastomer Composition for a Tire Object having a Self-Sealing Property
- Publication number 20130202829
- Publication date Aug 8, 2013
- Michelin Recherche et Technique S.A.
- Bozena Voge
- B60 - VEHICLES IN GENERAL
Information Patent Application
SYSTEM AND METHOD FOR BLENDING POLYMERS
- Publication number 20130099424
- Publication date Apr 25, 2013
- Chevron Phillips Chemical Company LP
- Vivek Rohatgi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
BIMODAL POLYETHYLENE COMPOSITIONS FOR BLOW MOLDING APPLICATIONS
- Publication number 20120220747
- Publication date Aug 30, 2012
- UNIVATION TECHNOLOGIES, LLC
- Stephen P. Jaker
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
SCREW EXTRUDER FOR CONTINUOUS AND SOLVENT-FREE RESIN EMULSIFICATION
- Publication number 20110286296
- Publication date Nov 24, 2011
- Xerox Corporation
- Joo T. Chung
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
LUG TYPE EXTRUDER SCREW
- Publication number 20110222363
- Publication date Sep 15, 2011
- Timothy D. MAZZOCCA
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
KNEADING DEGREE ADJUSTING MECHANISM, EXTRUDER, CONTINUOUS MIXER, KN...
- Publication number 20100271901
- Publication date Oct 28, 2010
- Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
- Kazuo Yamaguchi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Oxygen Tailoring of Polyethylene Resins
- Publication number 20100164133
- Publication date Jul 1, 2010
- UNIVATION TECHNOLOGIES, LLC
- Sandra D. Schregenberger
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
BIMODAL POLYETHYLENE COMPOSITIONS FOR BLOW MOLDING APPLICATIONS
- Publication number 20100133714
- Publication date Jun 3, 2010
- UNIVATION TECHNOLOGIES, LLC
- Stephen P. Jaker
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
SCREW ELEMENT FOR USE AS A KNEADING ELEMENT IN A PLASTICIZING UNIT
- Publication number 20090016147
- Publication date Jan 15, 2009
- KraussMaffei Berstorff GMBH
- MICHAEL BEHLING
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Mixing device
- Publication number 20060164911
- Publication date Jul 27, 2006
- BASF AKTIENGESELLSCHAFT Patents, Trademarks and Licenses
- Hartmut Nikolai
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Dynamic mixer screw tip
- Publication number 20050111294
- Publication date May 26, 2005
- CertainTeed Corporation
- Thomas A. Gates
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Oxygen tailoring of polyethylene resins
- Publication number 20050012235
- Publication date Jan 20, 2005
- Sandra D Schregenberger
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Extruder mixing
- Publication number 20040089971
- Publication date May 13, 2004
- Industrial Thermo Polymers Limited
- Steven Hartman
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

with screw and additionally other mixing elements on the same shaft

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Method for preparing pure chitosan fiber

Asymmetrical three-blade screw-type shaft for a mixing and kneading...

3D printed material, structure and method for making the same

Method of producing powder coating material

Double-bladed worm shaft for a mixing and kneading machine, wherein...

Kneading disc having band portion with bent part, screw element and...

Mixing and kneading machine with receiving areas for kneading eleme...

Torpedo for extruder

3D printed material, structure and method for making the same

Device for the successive introduction of additives into a polymer...

Extruder screw with alternately-arranged conveyance portions and ex...

Extruder screw including conveyance portions and paths within the c...

Method for producing a densified material from a complex film, prod...

Device and method for dispersing solids, liquids and gases in an ex...

Screw for injection molding machine, injection molding machine, and...

Apparatus for extruding plastic materials

Method for producing fiber reinforced cementitious slurry using a m...

Saponified ethylene-vinyl ester copolymer composition pellet, and p...

Mixing section for plastic extrusion screw

Independently driven device for use with plastic melt feed screw

Device for extruding elastomer mixtures

Process for the extrusion of plastics tending to adherence

Method and apparatus for increasing the intrinsic viscosity of a po...

Protective elements made of polyolefin hot-melt adhesives

Elastomer composition for a tire object having a self-sealing property

Pellet mill with an improved feed system and a method of forming pe...

Method of manufacturing a self-sealing composition

Kneading degree adjusting mechanism, extruder, continuous mixer, kn...

Thermally conductive plastic compositions, extrusion apparatus and...

Method for producing molded product, method for producing molded pr...

Patents Applicationslast 30 patents

TREATMENT ELEMENT FOR TREATING MATERIAL BY MEANS OF A SCREW MACHINE

ASYMMETRICAL THREE-BLADE SCREW-TYPE SHAFT FOR A MIXING AND KNEADING...

DOUBLE-BLADED WORM SHAFT FOR A MIXING AND KNEADING MACHINE, WHEREIN...

3D PRINTED MATERIAL, STRUCTURE AND METHOD FOR MAKING THE SAME

TWIN-FLIGHT SCREW SHAFT FOR A MIXING AND KNEADING MACHINE

SCREW DESIGNS FOR USE WHEN MOLDING PRODUCTS THAT INCLUDE SHEER SENS...

ASYMMETRICAL THREE-BLADE SCREW-TYPE SHAFT FOR A MIXING AND KNEADING...

Maxflow Flow Inducement System

METHOD FOR PRODUCING A DENSIFIED MATERIAL FROM A COMPLEX FILM, PROD...

Composition of 3D printing construction material

KNEADING DISC, SCREW ELEMENT AND EXTRUDER

DEVICE AND METHOD FOR DISPERSING SOLIDS, LIQUIDS AND GASES IN AN EX...

PROCESS FOR THE EXTRUSION OF PLASTICS TENDING TO ADHERENCE

A PELLET MILL WITH AN IMPROVED FEED SYSTEM AND A METHOD OF FORMING...

THERMALLY CONDUCTIVE PLASTIC COMPOSITIONS, EXTRUSION APPARATUS AND...

THERMALLY CONDUCTIVE PLASTIC COMPOSITIONS, EXTRUSION APPARATUS AND...

METHOD FOR PRODUCING MOLDED PRODUCT, METHOD FOR PRODUCING MOLDED PR...

Elastomer Composition for a Tire Object having a Self-Sealing Property

SYSTEM AND METHOD FOR BLENDING POLYMERS

BIMODAL POLYETHYLENE COMPOSITIONS FOR BLOW MOLDING APPLICATIONS

SCREW EXTRUDER FOR CONTINUOUS AND SOLVENT-FREE RESIN EMULSIFICATION

LUG TYPE EXTRUDER SCREW

KNEADING DEGREE ADJUSTING MECHANISM, EXTRUDER, CONTINUOUS MIXER, KN...

Oxygen Tailoring of Polyethylene Resins

BIMODAL POLYETHYLENE COMPOSITIONS FOR BLOW MOLDING APPLICATIONS

SCREW ELEMENT FOR USE AS A KNEADING ELEMENT IN A PLASTICIZING UNIT

Mixing device

Dynamic mixer screw tip

Oxygen tailoring of polyethylene resins

Extruder mixing