BRPI0801735A2 - mÁquina de misturar e amassar para processos de preparaÇço contÍnuos, bem como, processo para a realizaÇço de processos de preparaÇço contÍnuos por meio de uma mÁquina de misturar e amassar - Google Patents

mÁquina de misturar e amassar para processos de preparaÇço contÍnuos, bem como, processo para a realizaÇço de processos de preparaÇço contÍnuos por meio de uma mÁquina de misturar e amassar

Info

Publication number
BRPI0801735A2
BRPI0801735A2 BRPI0801735-2A BRPI0801735A BRPI0801735A2 BR PI0801735 A2 BRPI0801735 A2 BR PI0801735A2 BR PI0801735 A BRPI0801735 A BR PI0801735A BR PI0801735 A2 BRPI0801735 A2 BR PI0801735A2
Authority
BR
Brazil
Prior art keywords
mixing
preparation processes
continuous preparation
kneading machine
machine
Prior art date
Application number
BRPI0801735-2A
Other languages
English (en)
Inventor
Heini Gruetter
Hans-Ulrich Siegenthaler
Original Assignee
Buss Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Buss Ag filed Critical Buss Ag
Publication of BRPI0801735A2 publication Critical patent/BRPI0801735A2/pt
Publication of BRPI0801735B1 publication Critical patent/BRPI0801735B1/pt

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/505Screws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B29B7/422Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with screw sections co-operating, e.g. intermeshing, with elements on the wall of the surrounding casing
    • B29B7/423Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with screw sections co-operating, e.g. intermeshing, with elements on the wall of the surrounding casing and oscillating axially
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29B7/02Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • B29B7/10Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
    • B29B7/12Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft
    • B29B7/14Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with screw or helix
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/397Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/45Axially movable screws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/505Screws
    • B29C48/67Screws having incorporated mixing devices not provided for in groups B29C48/52 - B29C48/66
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/68Barrels or cylinders
    • B29C48/685Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
    • B29C48/687Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having projections with a short length in the barrel direction, e.g. pins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

MÁQUINA DE MISTURAR E AMASSAR PARA PROCESSOS DE PREPARAÇçO CONTÍNUOS, BEM COMO, PROCESSO PARA A REALIZAÇçO DE PROCESSOS DE PREPARAÇçO CONTÍNUOS POR MEIO DE UMA MÁQUINA DE MISTURAR E AMASSAR. A presente invenção refere-se a uma máquina de misturar e amassar (1) para processos de preparação contínuos que apresenta um eixo de rosca helicoidal (3) que gira em uma carcaça (2), que se movimenta ao mesmo tempo em transíação na direção axial. A fim de poder aumentar de forma duradoura a eficiência da máquina, com relação à carga de material por unidade de tempo, é sugerido um eixo de rosca helicoidal com as rela- ções geométricas seguintes: - Da/Di = 1,5 até 2,0, isto é, a relação entre o diâmetro externo do eixo de rosca helicoidal Da e o diâmetro interno do eixo de rosca helicoi- dal Di se situa entre 1,5 e 2,0; - Da/H = 4 até 6, isto é, a relação entre o diâmetro externo do eixo de rosca helicoidal Da e o curso H se situa entre 4 e 6; - T/H = 1,3 até 2,5, isto é, a relação entre a divisão 1 e o curso H se situa entre 1,3 e 2,5. A máquina de misturar e amassar (1) equipada com um eixo de rosca helicoidal (3) desse tipo é acionada, de preferência, com um número de rotações maior que 500 1/min, em particular, maior que 800 1/min.
BRPI0801735-2A 2007-07-25 2008-06-02 Máquina de misturar e amassar para processos de preparação contínuos, bem como processo para a realização de processos de preparação contínuos por meio de uma máquina de misturar e amassar BRPI0801735B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH11852007 2007-07-25
CH01185/07 2007-07-25

Publications (2)

Publication Number Publication Date
BRPI0801735A2 true BRPI0801735A2 (pt) 2009-03-10
BRPI0801735B1 BRPI0801735B1 (pt) 2018-02-14

Family

ID=38969405

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0801735-2A BRPI0801735B1 (pt) 2007-07-25 2008-06-02 Máquina de misturar e amassar para processos de preparação contínuos, bem como processo para a realização de processos de preparação contínuos por meio de uma máquina de misturar e amassar

Country Status (22)

Country Link
US (1) US7909500B2 (pt)
EP (1) EP2018946B1 (pt)
JP (1) JP4997193B2 (pt)
KR (1) KR101446809B1 (pt)
CN (1) CN101352662B (pt)
BR (1) BRPI0801735B1 (pt)
CA (1) CA2632423C (pt)
DK (1) DK2018946T3 (pt)
ES (1) ES2617952T3 (pt)
HK (1) HK1125593A1 (pt)
HR (1) HRP20170341T1 (pt)
HU (1) HUE031969T2 (pt)
MX (1) MX2008008232A (pt)
MY (1) MY149812A (pt)
PL (1) PL2018946T3 (pt)
PT (1) PT2018946T (pt)
RS (1) RS55766B1 (pt)
RU (1) RU2391203C2 (pt)
SG (2) SG149747A1 (pt)
SI (1) SI2018946T1 (pt)
TW (1) TWI443005B (pt)
UA (1) UA94076C2 (pt)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3868757B2 (ja) * 2001-04-25 2007-01-17 株式会社神戸製鋼所 ゴム系組成物の混練装置および混練方法
PT2018946T (pt) * 2007-07-25 2017-03-15 Buss Ag Máquina de misturar e amassar para processos de preparação contínua, e procedimento para execução de processos de preparação contínua por intermédio de uma máquina de misturar e amassar
EP2397886A4 (en) 2009-02-10 2013-10-09 Sharp Kk LIQUID CRYSTAL DISPLAY DEVICE
CH700976A1 (de) 2009-05-11 2010-11-15 Buss Ag Misch- und Knetmaschine für kontinuierliche Aufbereitungsprozesse sowie Verfahren zur Durchführung von kontinuierlichen Aufbereitungsprozessen mittels einer Misch- und Knetmaschine.
US9011131B2 (en) * 2010-03-11 2015-04-21 Rms Equipment Llc Lug type extruder screw
US8807825B2 (en) * 2010-08-16 2014-08-19 B&P Process Equipment And Systems, Llc Gear box with variably coupled oscillation and rotation for kneading machine
FR2978934B1 (fr) * 2011-08-09 2016-09-02 Rms Equipment Llc Vis d'extrudeuse du type a saillies
CN102528885B (zh) * 2011-12-16 2015-03-25 申清章 一种木屑搅拌机的搅拌装置
CN107428104B (zh) * 2014-12-30 2019-05-10 奥特克莱夫高压高温有限公司 用于材料变形加工的装置
CN107849240B (zh) * 2015-05-12 2021-05-25 巴斯夫欧洲公司 己内酰胺制剂
CN106422956B (zh) * 2016-12-02 2022-07-08 郑州明珠实业有限公司 管链式上料均化系统
KR101788648B1 (ko) * 2017-02-10 2017-11-03 주식회사 지엔티엔에스 연소촉매용 반죽 및 압출장치
EP3473404A1 (de) * 2017-10-17 2019-04-24 Buss AG Misch- und knetvorrichtung
PL3473395T3 (pl) * 2017-10-17 2021-10-04 Buss Ag Asymetryczny trójskrzydłowy wałek ślimakowy do maszyny mieszającej oraz ugniatającej
USD929799S1 (en) * 2018-05-04 2021-09-07 Buss Ag Screw shaft element
US11472089B2 (en) * 2018-05-04 2022-10-18 Case Western Reserve University Mixing element having projections defining channels of varying width and depth for extrusion operations
USD961990S1 (en) * 2018-05-04 2022-08-30 Buss Ag Screw shaft element
RU207074U1 (ru) * 2021-05-25 2021-10-11 Вячеслав Валерьевич Корнейчик Смеситель-пластикатор для установки изготовления полимерных изделий с высоким содержанием жидкого компонента

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH278575A (de) 1949-11-04 1951-10-31 List Heinz Misch- und Knetmaschine.
US3023455A (en) * 1959-03-09 1962-03-06 Herbert F Geier Mixers
US3189324A (en) * 1961-12-06 1965-06-15 Gubler Ernst Kneading and mixing apparatus
NL283627A (pt) * 1962-09-26 1900-01-01
CH407525A (de) * 1964-01-23 1966-02-15 Buss Ag Knet- und Mischeinrichtung
US3458894A (en) * 1966-09-13 1969-08-05 Baker Perkins Inc Mixing apparatus
US3841611A (en) * 1972-07-14 1974-10-15 Buss Ag Mixing and kneading device
JPS61277410A (ja) * 1985-06-03 1986-12-08 Nippei Toyama Corp 推力方向往復運動装置の圧力補償装置
DE19536289C2 (de) * 1995-09-29 1999-01-07 Krupp Werner & Pfleiderer Gmbh Verfahren zur Durchführung von kontinuierlichen Aufbereitungsprozessen mit gleichsinnig drehenden, dicht kämmenden Doppelschneckenextrudern
JPH09254230A (ja) * 1996-01-19 1997-09-30 Nippon Paint Co Ltd 感光性樹脂組成物の成形方法およびそれから得られた樹脂板
US6015227A (en) * 1998-05-26 2000-01-18 Fogarty; James Thermoplastic foam extrusion screw with circulation channels
JP4387036B2 (ja) 2000-04-28 2009-12-16 旭化成ケミカルズ株式会社 一条逆ネジ切り欠きスクリュを用いた液状添加剤の混練方法
JP4297601B2 (ja) 2000-09-13 2009-07-15 株式会社日本製鋼所 同方向回転二軸押出機
KR100853552B1 (ko) * 2000-09-28 2008-08-21 베르스토르프 게엠베하 고점성 매질용 스크루 압출기와 기어 펌프의 조립체
EP1262303A1 (de) * 2001-05-28 2002-12-04 Coperion Buss AG Arbeitsorgan für eine Misch-und/oder Knet- und/oder Fördereinrichtung
WO2003022550A1 (de) 2001-09-11 2003-03-20 Bühler AG Verfahren zur durchführung kontinuierlicher misch- und aufbereitungsprozesse mittels spezieller verhältnisse von mantelfäche und freiem volumen bzw. schneckeninnen- und aussendurchmesser
JP2004237715A (ja) * 2002-12-11 2004-08-26 Sumitomo Rubber Ind Ltd 押出機および押出方法
JP2006315388A (ja) * 2005-04-14 2006-11-24 Sekisui Chem Co Ltd 塩化ビニル系樹脂発泡体の製造方法
ES2314973T3 (es) * 2006-02-06 2009-03-16 Buss Ag Mezcladora y amasadora.
PT2018946T (pt) * 2007-07-25 2017-03-15 Buss Ag Máquina de misturar e amassar para processos de preparação contínua, e procedimento para execução de processos de preparação contínua por intermédio de uma máquina de misturar e amassar
CH700976A1 (de) * 2009-05-11 2010-11-15 Buss Ag Misch- und Knetmaschine für kontinuierliche Aufbereitungsprozesse sowie Verfahren zur Durchführung von kontinuierlichen Aufbereitungsprozessen mittels einer Misch- und Knetmaschine.

Also Published As

Publication number Publication date
TW200904615A (en) 2009-02-01
CN101352662A (zh) 2009-01-28
SG149747A1 (en) 2009-02-27
US20090027994A1 (en) 2009-01-29
PT2018946T (pt) 2017-03-15
RU2008130775A (ru) 2010-01-27
SI2018946T1 (sl) 2017-06-30
KR101446809B1 (ko) 2014-10-02
JP4997193B2 (ja) 2012-08-08
CA2632423C (en) 2012-05-22
BRPI0801735B1 (pt) 2018-02-14
CA2632423A1 (en) 2009-01-25
HUE031969T2 (en) 2017-08-28
EP2018946B1 (de) 2017-01-11
EP2018946A3 (de) 2015-09-23
RS55766B1 (sr) 2017-07-31
CN101352662B (zh) 2012-11-28
KR20090012047A (ko) 2009-02-02
EP2018946A2 (de) 2009-01-28
HRP20170341T1 (hr) 2017-05-05
TWI443005B (zh) 2014-07-01
SG169349A1 (en) 2011-03-30
PL2018946T3 (pl) 2017-07-31
HK1125593A1 (en) 2009-08-14
DK2018946T3 (da) 2017-03-13
RU2391203C2 (ru) 2010-06-10
MY149812A (en) 2013-10-14
JP2009029131A (ja) 2009-02-12
US7909500B2 (en) 2011-03-22
UA94076C2 (ru) 2011-04-11
MX2008008232A (es) 2009-03-04
ES2617952T3 (es) 2017-06-20

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B03A Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]