CA2102577A1 - Mixing kneader - Google Patents
Mixing kneaderInfo
- Publication number
- CA2102577A1 CA2102577A1 CA002102577A CA2102577A CA2102577A1 CA 2102577 A1 CA2102577 A1 CA 2102577A1 CA 002102577 A CA002102577 A CA 002102577A CA 2102577 A CA2102577 A CA 2102577A CA 2102577 A1 CA2102577 A1 CA 2102577A1
- Authority
- CA
- Canada
- Prior art keywords
- shaft
- kneading
- cleaning
- resp
- shafts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
- B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
- B01F27/701—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers
- B01F27/702—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers with intermeshing paddles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/40—Mixers with shaking, oscillating, or vibrating mechanisms with an axially oscillating rotary stirrer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F35/92—Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F35/95—Heating or cooling systems using heated or cooled stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
- B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
- B29B7/481—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with paddles, gears or discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F2035/99—Heating
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Accessories For Mixers (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
ABSTRACT
In the case of a mixing kneader for performing mechanical, chemical, and/or thermal processes with at least two axis-parallel rotating shafts, at least the shaft designated as the main shaft has disk surfaces with kneading bars arranged on their circumference, which are brushed by cleaning resp. kneading and transporting elements, which are mounted on the other shaft designated as the cleaning shaft. The kneading bars of two adjacent disk surfaces on the main shaft maintain a separation from one another, through which the cleaning-resp. kneading and transporting element on the cleaning shaft passes. In this case the shafts and/or the housing are made so that they oscillate back and forth in the longitudinal axis of the shaft.
In the case of a mixing kneader for performing mechanical, chemical, and/or thermal processes with at least two axis-parallel rotating shafts, at least the shaft designated as the main shaft has disk surfaces with kneading bars arranged on their circumference, which are brushed by cleaning resp. kneading and transporting elements, which are mounted on the other shaft designated as the cleaning shaft. The kneading bars of two adjacent disk surfaces on the main shaft maintain a separation from one another, through which the cleaning-resp. kneading and transporting element on the cleaning shaft passes. In this case the shafts and/or the housing are made so that they oscillate back and forth in the longitudinal axis of the shaft.
Description
-' 2:~2~77 Mixing Knead~ ~
"'"',. `' The present invention concerns a mixing kneader for performing ~:
mechanical, chemical~ and~or thermal processes with at least two rotating shafts ~ith parallel a~es, the circumference of the disk -~`
surfaces at least on the shaft designated a~ the main shaft, being provided with kneading bars which are brushed by cleaning, and~or kneading and transporting elements, which are mounted on ~:;
the other shaft designated as a cleaning shaft~ and the kneading bars ot two adjacent disk surfaces on the main shaft maintaining a space between one another through which the cleaning~ and~or kneading and transportlng element on the cleaning shatt passes, in accordance with Canadian Patent A,r,plication 2,070,539, W. ~ tsch e~ al, filed June 5, 1992.
.
rhis mixing kneader produces an outstanding kneading effect on the product with simultaneous goo~ cleaning, in particular of the heated surtaces within the mixing kneader. However, in practice it has been shown that small amounts of material may build up on the housing in the area of the spaces between the kneading bars I, .
"'"',. `' The present invention concerns a mixing kneader for performing ~:
mechanical, chemical~ and~or thermal processes with at least two rotating shafts ~ith parallel a~es, the circumference of the disk -~`
surfaces at least on the shaft designated a~ the main shaft, being provided with kneading bars which are brushed by cleaning, and~or kneading and transporting elements, which are mounted on ~:;
the other shaft designated as a cleaning shaft~ and the kneading bars ot two adjacent disk surfaces on the main shaft maintaining a space between one another through which the cleaning~ and~or kneading and transportlng element on the cleaning shatt passes, in accordance with Canadian Patent A,r,plication 2,070,539, W. ~ tsch e~ al, filed June 5, 1992.
.
rhis mixing kneader produces an outstanding kneading effect on the product with simultaneous goo~ cleaning, in particular of the heated surtaces within the mixing kneader. However, in practice it has been shown that small amounts of material may build up on the housing in the area of the spaces between the kneading bars I, .
2~ ~25~7 , The task of the present invention also is to avoid these small buildups.
In order to solve this task the two shafts and~or the housing is~are made so as to move so ~hat they oscil late back and forth in the longitudinal axis of the shafts.
: -The b~ildup of the product beino treated on the housing wall i5 avoided in this way.
The oscillatory motion extends at least over the width of the slot between the kneading elements which act together. -~
Further advantages, features~ and characteristics of the invention are indicated in the following description of preferred embodiments as well as by means of the drawing:
Fig, 1 shows a top view of a mixing kneader in accordance with the invention with the housing partially cut open;
Fig. 2 shows a top view of a section of two interacting shaft-;
fig. 3 shows a top view of a section of a development of one shaft in accordance with Fig. 2;
~ 2 Fig. 4 shows a top view of a section of a development of the other shaft in accordance with Fig. 2~
~ mi~ing kneader P in accordance with Fig. 1 has a housing 1, which consists of severa} hDusing sections la, lb7 and lc~ The housing sections are coupled together by means of corresponding :~
flange connections ~. Housing section la is provided with 2 ~
feeding pipe connectiDn 3 for a produ~t to be treated in the ~;
mixing kneader, and housing section 1c is proYided with an outlet :~
pipe connection 4 for the treated product.
The product is transported from the feeding pipe connec~ion ~ to the outlet pipe connection 4 by means of two shafts 5 and 6, as well as by kneading and transporting elements 7 mounted thereon.
During transportation the product i5 mixed and kneaded as well as preferably subjected to heat treatment. For this shafts 5 and and, if necessary, also the kneading and transporting elements are heated, as is the housing wall 8, which is not shown in greater detail. Connections ~ and 10 are provided for the introduction of a heating medium into the shafts 5 and 6 and from there, if necessary, into the inner kneading and transportinQ
elements 7, these connections ~ and 10 being arranged around corresponding outlets 11 and 1~ for the heating medium fed through the shafts S and 6. ~ correspondinq feeding of the heating medium in the casing surface of the shafts 5 and 6 and a corresponding feedback through the outlet nipples 11 and 12 are .', ~
2~2~
state-of-the-art and ~herefore are not described ~urther.
Shaft ~ournals 13 and 14 connected with the shafts 5 and 6 pass through an intermediate bracket 15 between connections 9 and 10, in each case a stu~fing box 16 and 17 being prDvided against the housing 1 for sealing shaft 5 resp. 6. Shaft journals 13 and 14 are coupled together outside the intermediate bracket via corresponding gear elements 17 and 18~ for example toothed wheels~ the gear element 17 being connected with a drive 20 via a gear mechanism. ~t least the gear element 17 is set in rotary motion via this drive 20 and the gear mechanism 1~l which motion is transmitted to the sha~t 5. This rotary motion ~ay be transferred to the drive element 18 in the same or opposite direction as well as with the same or different speed.
Corresponding speed-transforming transmissions are sold commercially and are not to be described in greater detail here.
The configuration o~ the kneading and transporting elements 7 and their arrangement on shafts 5 and 6 is essentially within the framework of the present invention. For the sake of clarity in the following discussion, shaft 5 also is called the main shaft and shaft 6 also is called the cleaning shaft. Each shaft 5 resp. 6 is equipped with kneading and transporting elements 7, which are based on the disk sur~aces ~1 of the respecti~e shaft 5 and~or 6- Canadian Patent Application 2,070,539 shows different embodiments of disk surfaces 21.
4 :~
'2 5 7 7 Since preterably the kneading and transporting elements, both on the main shaft as well as on the cleaning shaft ~ are made identical up to the configuration of the disk surfaces ~1, they are to be provided with the same reference number below. Of course, within the framework of the present invention this leaves open the possibility that the kneading and transportin~ elements 7 on the main shaft 5 may be configured differently from those on the cleaning shaft 6.
It is essential that U-shaped kneading bars 25 are located on the circumference of the disk surface 23 both of the main shaft 5 as well as of the cleaning shaft ~ i~ it is provided with disk surfaces. That is, supporting arm 26 rests on the circumference of the disk surface ~3, while vanes 27 and ~8 project on both sides of this supporting arm ~6 toward the respective shaft 5 resp. 6. This then results in a kneading and transporting element 7, as is shown, in particular, in Fig. ~ which has a Y-shaped configuration in top view.
Further, it is essential that two ad3acent kneading and transporting elements 7, and/or the adjacent vanes ~7, maintain a separation a from one another, which makes it possible for the disk surface 21 of the opposite shaft S resp. 6 to pass throu~h it. Correspondingly~ this separation a is slightly larger than the thickness d of a disk surface ~
','"' ~
~;'''`
21~ 77 Further, ~he disk surfaces ~l of the main shaft and cleaning shaft 6 are offset ~rom one another. Preferably this offsetting is such that a disk surface 21 of the cleaning shaft engages the main shaft 5 approximately in the middle between two disk surfaces 21. Of course, this offsetting also may be made eccentric, correspondingly producing kneading areas 2~ of different widths. Of course, the configuration of equal kneading areas 2~ is preferred.
In Figs. 3 ano 4 it is clear that the kneading bars 25 are set obliquely in relation to the axial direction of the sha~ts 5 resp. 6. The transporting effect is improved in this way.
In practice it has now proven to be the case that resioual product in the form of mounds builds up on the housing wall in the area of the uninterrupted kneading elements ~5 and 26. In order to prevent this, the rotational motions of the two shafts 5 and 6 are overlapped by an oscillation in the }ongitudinal direction. That is, the sh ~ts move back and forth toge~her at least by the width of the slot a in the longitudinal axis of the shaft. In this way a complete brushing of the housing wall by the kneading elements 25 and 26 is achieved, and thus the ;~
formation of product masses on the housing wall is avoided.
In order to solve this task the two shafts and~or the housing is~are made so as to move so ~hat they oscil late back and forth in the longitudinal axis of the shafts.
: -The b~ildup of the product beino treated on the housing wall i5 avoided in this way.
The oscillatory motion extends at least over the width of the slot between the kneading elements which act together. -~
Further advantages, features~ and characteristics of the invention are indicated in the following description of preferred embodiments as well as by means of the drawing:
Fig, 1 shows a top view of a mixing kneader in accordance with the invention with the housing partially cut open;
Fig. 2 shows a top view of a section of two interacting shaft-;
fig. 3 shows a top view of a section of a development of one shaft in accordance with Fig. 2;
~ 2 Fig. 4 shows a top view of a section of a development of the other shaft in accordance with Fig. 2~
~ mi~ing kneader P in accordance with Fig. 1 has a housing 1, which consists of severa} hDusing sections la, lb7 and lc~ The housing sections are coupled together by means of corresponding :~
flange connections ~. Housing section la is provided with 2 ~
feeding pipe connectiDn 3 for a produ~t to be treated in the ~;
mixing kneader, and housing section 1c is proYided with an outlet :~
pipe connection 4 for the treated product.
The product is transported from the feeding pipe connec~ion ~ to the outlet pipe connection 4 by means of two shafts 5 and 6, as well as by kneading and transporting elements 7 mounted thereon.
During transportation the product i5 mixed and kneaded as well as preferably subjected to heat treatment. For this shafts 5 and and, if necessary, also the kneading and transporting elements are heated, as is the housing wall 8, which is not shown in greater detail. Connections ~ and 10 are provided for the introduction of a heating medium into the shafts 5 and 6 and from there, if necessary, into the inner kneading and transportinQ
elements 7, these connections ~ and 10 being arranged around corresponding outlets 11 and 1~ for the heating medium fed through the shafts S and 6. ~ correspondinq feeding of the heating medium in the casing surface of the shafts 5 and 6 and a corresponding feedback through the outlet nipples 11 and 12 are .', ~
2~2~
state-of-the-art and ~herefore are not described ~urther.
Shaft ~ournals 13 and 14 connected with the shafts 5 and 6 pass through an intermediate bracket 15 between connections 9 and 10, in each case a stu~fing box 16 and 17 being prDvided against the housing 1 for sealing shaft 5 resp. 6. Shaft journals 13 and 14 are coupled together outside the intermediate bracket via corresponding gear elements 17 and 18~ for example toothed wheels~ the gear element 17 being connected with a drive 20 via a gear mechanism. ~t least the gear element 17 is set in rotary motion via this drive 20 and the gear mechanism 1~l which motion is transmitted to the sha~t 5. This rotary motion ~ay be transferred to the drive element 18 in the same or opposite direction as well as with the same or different speed.
Corresponding speed-transforming transmissions are sold commercially and are not to be described in greater detail here.
The configuration o~ the kneading and transporting elements 7 and their arrangement on shafts 5 and 6 is essentially within the framework of the present invention. For the sake of clarity in the following discussion, shaft 5 also is called the main shaft and shaft 6 also is called the cleaning shaft. Each shaft 5 resp. 6 is equipped with kneading and transporting elements 7, which are based on the disk sur~aces ~1 of the respecti~e shaft 5 and~or 6- Canadian Patent Application 2,070,539 shows different embodiments of disk surfaces 21.
4 :~
'2 5 7 7 Since preterably the kneading and transporting elements, both on the main shaft as well as on the cleaning shaft ~ are made identical up to the configuration of the disk surfaces ~1, they are to be provided with the same reference number below. Of course, within the framework of the present invention this leaves open the possibility that the kneading and transportin~ elements 7 on the main shaft 5 may be configured differently from those on the cleaning shaft 6.
It is essential that U-shaped kneading bars 25 are located on the circumference of the disk surface 23 both of the main shaft 5 as well as of the cleaning shaft ~ i~ it is provided with disk surfaces. That is, supporting arm 26 rests on the circumference of the disk surface ~3, while vanes 27 and ~8 project on both sides of this supporting arm ~6 toward the respective shaft 5 resp. 6. This then results in a kneading and transporting element 7, as is shown, in particular, in Fig. ~ which has a Y-shaped configuration in top view.
Further, it is essential that two ad3acent kneading and transporting elements 7, and/or the adjacent vanes ~7, maintain a separation a from one another, which makes it possible for the disk surface 21 of the opposite shaft S resp. 6 to pass throu~h it. Correspondingly~ this separation a is slightly larger than the thickness d of a disk surface ~
','"' ~
~;'''`
21~ 77 Further, ~he disk surfaces ~l of the main shaft and cleaning shaft 6 are offset ~rom one another. Preferably this offsetting is such that a disk surface 21 of the cleaning shaft engages the main shaft 5 approximately in the middle between two disk surfaces 21. Of course, this offsetting also may be made eccentric, correspondingly producing kneading areas 2~ of different widths. Of course, the configuration of equal kneading areas 2~ is preferred.
In Figs. 3 ano 4 it is clear that the kneading bars 25 are set obliquely in relation to the axial direction of the sha~ts 5 resp. 6. The transporting effect is improved in this way.
In practice it has now proven to be the case that resioual product in the form of mounds builds up on the housing wall in the area of the uninterrupted kneading elements ~5 and 26. In order to prevent this, the rotational motions of the two shafts 5 and 6 are overlapped by an oscillation in the }ongitudinal direction. That is, the sh ~ts move back and forth toge~her at least by the width of the slot a in the longitudinal axis of the shaft. In this way a complete brushing of the housing wall by the kneading elements 25 and 26 is achieved, and thus the ;~
formation of product masses on the housing wall is avoided.
Claims (2)
1. A mixing kneader for carrying out mechanical, chemical, and/or thermal processes with at least two axis-parallel rotating shafts, at least the shaft designated as the main shaft being provided with disk surfaces with kneading bars arranged around their circumference, which are brushed by cleaning, resp.
kneading and transporting elements, which are arranged on the other shaft designated as the cleaning shaft, and the kneading bars of two adjacent disk surfaces on the main shaft maintaining a separation from one another, through which the cleaning resp.
kneading and transporting element on the cleaning shaft passes, in accordance with Canadian Patent Application 2,070,539 characterized by the fact that the shafts (5 and 6) and/or the housing (1) is/are made so that they can oscillate back and forth in the longitudinal axis of the shaft.
kneading and transporting elements, which are arranged on the other shaft designated as the cleaning shaft, and the kneading bars of two adjacent disk surfaces on the main shaft maintaining a separation from one another, through which the cleaning resp.
kneading and transporting element on the cleaning shaft passes, in accordance with Canadian Patent Application 2,070,539 characterized by the fact that the shafts (5 and 6) and/or the housing (1) is/are made so that they can oscillate back and forth in the longitudinal axis of the shaft.
2. A mixing kneader in accordance with Claim 1, characterized by the fact that the oscillating motion takes place at least in the width of the slot (a).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4239424.4 | 1992-11-24 | ||
| DE4239424A DE4239424A1 (en) | 1991-06-07 | 1992-11-24 | Kneading mixer with rotating kneading shafts - reciprocated to avoid product nib deposits on housing wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2102577A1 true CA2102577A1 (en) | 1994-05-25 |
Family
ID=6473496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002102577A Abandoned CA2102577A1 (en) | 1992-11-24 | 1993-11-05 | Mixing kneader |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0603525A1 (en) |
| JP (1) | JPH06339622A (en) |
| AU (1) | AU5063293A (en) |
| CA (1) | CA2102577A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8853333B2 (en) | 2012-05-07 | 2014-10-07 | Basf Se | Process for operating a mixing kneader |
| US9248429B2 (en) | 2012-06-13 | 2016-02-02 | Basf Se | Process for producing water-absorbing polymer particles in a polymerization reactor with at least two axially parallel rotating shafts |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19536944A1 (en) * | 1995-10-04 | 1997-04-10 | List Ag | Mixer kneader |
| DE19940521C2 (en) * | 1999-08-26 | 2003-02-13 | List Ag Arisdorf | mixing kneader |
| EP2052773B1 (en) | 2004-09-28 | 2012-07-18 | Basf Se | Kneader and use of the kneader for producing poly(meth)acrylates |
| WO2007144025A1 (en) * | 2006-06-15 | 2007-12-21 | Syral Belgium Nv | Process for preparing randomly-bonded polysaccharides |
| WO2011105974A1 (en) * | 2010-02-26 | 2011-09-01 | Domeks Makine Limited Sirketi | Continuous mixing system with rotatable and axially movable screws |
| JP2014515413A (en) | 2011-05-26 | 2014-06-30 | ビーエーエスエフ ソシエタス・ヨーロピア | Continuous production method of water-absorbing polymer particles |
| WO2012160174A1 (en) | 2011-05-26 | 2012-11-29 | Basf Se | Method for producing water-absorbing polymer particles |
| WO2013186176A1 (en) | 2012-06-13 | 2013-12-19 | Basf Se | Method for producing water-absorbing polymer particles in a polymerization reactor having at least two axially parallel rotating shafts |
| WO2014118024A1 (en) | 2013-01-29 | 2014-08-07 | Basf Se | Method for producing water-absorbing polymer particles with high swelling rate and high centrifuge retention capacity with simultaneously high permeability of the swollen gel bed |
| CN107051357A (en) * | 2017-04-10 | 2017-08-18 | 山东里德工程技术有限公司 | Twin shaft self-cleaning reactor |
| EP4063091A1 (en) * | 2021-03-26 | 2022-09-28 | Starlinger & Co Gesellschaft m.b.H. | Device and method for the thermal treatment of thermoplastic melts |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE391350C (en) * | 1924-03-06 | Wommer Geb | Method and device for mixing dust-like with viscous substances | |
| DE1197848B (en) * | 1960-10-27 | 1965-08-05 | Gustav Eirich | Mixing and digestion device |
| IT940694B (en) * | 1971-11-18 | 1973-02-20 | Braibanti G E C Spa | MIXER FOR PRESS FOR FOOD AND SIMILAR PASTES WITH DEVICES FOR THE ALTERNATIVE MOVEMENT OF ROTANT SHAFTS |
| CH565585A5 (en) * | 1974-04-16 | 1975-08-29 | List Heinz | Multispindle mixer-kneader - with axially oscillating, rotating scraper shaft |
| DE4118884A1 (en) * | 1991-06-07 | 1992-12-10 | List Ag | MIXING kneader |
-
1993
- 1993-11-05 CA CA002102577A patent/CA2102577A1/en not_active Abandoned
- 1993-11-09 EP EP93118131A patent/EP0603525A1/en not_active Withdrawn
- 1993-11-12 AU AU50632/93A patent/AU5063293A/en not_active Abandoned
- 1993-11-24 JP JP5293098A patent/JPH06339622A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8853333B2 (en) | 2012-05-07 | 2014-10-07 | Basf Se | Process for operating a mixing kneader |
| US9248429B2 (en) | 2012-06-13 | 2016-02-02 | Basf Se | Process for producing water-absorbing polymer particles in a polymerization reactor with at least two axially parallel rotating shafts |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06339622A (en) | 1994-12-13 |
| EP0603525A1 (en) | 1994-06-29 |
| AU5063293A (en) | 1994-06-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |