EP0525237A1 - Procédé pour nettoyer et/ou rincer des mélangeurs pour matériaux plastiques aptes à mousser - Google Patents

Procédé pour nettoyer et/ou rincer des mélangeurs pour matériaux plastiques aptes à mousser Download PDF

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Publication number
EP0525237A1
EP0525237A1 EP91112859A EP91112859A EP0525237A1 EP 0525237 A1 EP0525237 A1 EP 0525237A1 EP 91112859 A EP91112859 A EP 91112859A EP 91112859 A EP91112859 A EP 91112859A EP 0525237 A1 EP0525237 A1 EP 0525237A1
Authority
EP
European Patent Office
Prior art keywords
mixing
feeds
rinsing
cleaning
air
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.)
Withdrawn
Application number
EP91112859A
Other languages
German (de)
English (en)
Inventor
Rainer Baars
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VARIOTEC SANDWICHELEMENTE GmbH
Original Assignee
VARIOTEC SANDWICHELEMENTE GmbH
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 VARIOTEC SANDWICHELEMENTE GmbH filed Critical VARIOTEC SANDWICHELEMENTE GmbH
Priority to EP91112859A priority Critical patent/EP0525237A1/fr
Publication of EP0525237A1 publication Critical patent/EP0525237A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B01F35/10—Maintenance of mixers
    • B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
    • B01F35/1452—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids

Definitions

  • the invention relates to a method for cleaning and / or rinsing mixing devices for foamable plastics, e.g. Polyol and isocyanate, the mixing devices having a mixing head with lockable feeds for the foam materials or cleaners, detergents or the like.
  • the mixing devices having a mixing head with lockable feeds for the foam materials or cleaners, detergents or the like.
  • this object is achieved in that for rinsing and / or cleaning the mixing head and mixing chamber or the mixing chamber into the one for a foam material, e.g. Polyol blocked feed essentially water heated to 85 Celsius and into that for the other foam material, e.g. Isocyanate, blocked supply air is passed. Water and air are preferably fed into the feeds simultaneously.
  • a foam material e.g. Polyol blocked feed essentially water heated to 85 Celsius and into that for the other foam material, e.g. Isocyanate
  • Water and air are preferably fed into the feeds simultaneously.
  • the mixing head has feeds for the foam materials, e.g. Has polyol and isocyanate and a feed line which can additionally be released therefrom and that when the feeds for the foam materials are blocked, water and cold or warmed air are introduced into the mixing head via the additional feed line to water heated essentially to 85 Cel-sius.
  • the foam materials or the water and air get into the inlets via suitable valves. It goes without saying that water and air can also be introduced into the mixing head via feeds which are independent of one another, instead of via a single feed.
  • 1 denotes the mixing head of a mixing device which, in a manner known per se, has a feed 2 for a foam material, e.g. Polyol and a feed 3 for another foam material e.g. Isocyanate.
  • the two feeds 2 and 3 are connected to a mixing chamber 4 which has an outlet 5 and is fixedly connected to the mixing head and in which the foam materials are mixed.
  • the foam material mixture reaches the processing plants via the outlet 5.
  • the mixing chamber 4 receives a mixing body 6 freely rotatable, which is rotatable via a shaft 7 by a drive motor (not shown).
  • the mixing body 6 and the inner walls 4 'of the mixing chamber 4 have mixing webs 8 which lead to a forced mixing of the foam materials when the mixing body 6 rotates.
  • cleaning or rinsing of the mixing device is required in each case.
  • water heated to approximately 85 degrees is introduced into the feed 2, which is blocked for the foam material
  • air, preferably air heated to 85 ° C. is introduced into the feed, which is blocked for the other foam material, and both, and both Media are fed to the mixing chamber 4.
  • the water-air mixture brings about an intimate cleaning of the mixing head 1 or of the mixing head 1 and mixing chamber 4, including the mixing body 6.
  • the use of a water-air mixture as a cleaning or rinsing agent has proven to be economically advantageous and environmentally compatible.
  • the mixing body 6 has webs 6 'on the outside.
  • the mixing head 1 is provided with feeders 2 and 3 for the foam materials.
  • an additional feed 9 is formed for a water-air mixture.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polyurethanes Or Polyureas (AREA)
EP91112859A 1991-07-31 1991-07-31 Procédé pour nettoyer et/ou rincer des mélangeurs pour matériaux plastiques aptes à mousser Withdrawn EP0525237A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP91112859A EP0525237A1 (fr) 1991-07-31 1991-07-31 Procédé pour nettoyer et/ou rincer des mélangeurs pour matériaux plastiques aptes à mousser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91112859A EP0525237A1 (fr) 1991-07-31 1991-07-31 Procédé pour nettoyer et/ou rincer des mélangeurs pour matériaux plastiques aptes à mousser

Publications (1)

Publication Number Publication Date
EP0525237A1 true EP0525237A1 (fr) 1993-02-03

Family

ID=8207001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91112859A Withdrawn EP0525237A1 (fr) 1991-07-31 1991-07-31 Procédé pour nettoyer et/ou rincer des mélangeurs pour matériaux plastiques aptes à mousser

Country Status (1)

Country Link
EP (1) EP0525237A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0709131A1 (fr) * 1994-10-26 1996-05-01 Societe Des Produits Nestle S.A. Mélange de fluides

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3026183A (en) * 1960-02-05 1962-03-20 Dayco Corp Mixing apparatus
CH385174A (de) * 1959-07-03 1964-12-15 Bosch Gmbh Robert Vorrichtung zum Herstellen und Dosieren von aus vorzugsweise miteinander reagierenden, flüssigen Stoffen bestehenden Gemischen
US3212128A (en) * 1963-03-20 1965-10-19 Air Prod & Chem Mold filling apparatus
US3273863A (en) * 1964-04-24 1966-09-20 Lodige Wilhelm Mixing apparatus
US3450388A (en) * 1968-03-12 1969-06-17 Gen Motors Corp Mixer with flushing valve in the outlet
DE2056435A1 (en) * 1970-11-17 1972-05-25 Ernst R Feed control - to mixer of multi-component plastics using a movable valve ring
JPS555960A (en) * 1978-06-28 1980-01-17 Matsushita Electric Ind Co Ltd Device for mixing of reaction mixture for manufacturing polyurethane, etc.
JPS615908A (ja) * 1984-06-21 1986-01-11 Matsushita Electric Ind Co Ltd 反応性射出成形機の混合部の洗浄方法
DE3918285A1 (de) * 1988-06-10 1990-01-25 Elastogran Polyurethane Gmbh Verfahren und vorrichtung zum spuelen (reinigen) von mischvorrichtungen fuer mehrkomponenten-kunststoffe, insbesondere polyurethan
DE3906577C1 (fr) * 1989-03-02 1990-06-13 Mgv-Moest-Spritzgeraete Produktions- Und Vertriebs-Gmbh, 8910 Landsberg, De

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH385174A (de) * 1959-07-03 1964-12-15 Bosch Gmbh Robert Vorrichtung zum Herstellen und Dosieren von aus vorzugsweise miteinander reagierenden, flüssigen Stoffen bestehenden Gemischen
US3026183A (en) * 1960-02-05 1962-03-20 Dayco Corp Mixing apparatus
US3212128A (en) * 1963-03-20 1965-10-19 Air Prod & Chem Mold filling apparatus
US3273863A (en) * 1964-04-24 1966-09-20 Lodige Wilhelm Mixing apparatus
US3450388A (en) * 1968-03-12 1969-06-17 Gen Motors Corp Mixer with flushing valve in the outlet
DE2056435A1 (en) * 1970-11-17 1972-05-25 Ernst R Feed control - to mixer of multi-component plastics using a movable valve ring
JPS555960A (en) * 1978-06-28 1980-01-17 Matsushita Electric Ind Co Ltd Device for mixing of reaction mixture for manufacturing polyurethane, etc.
JPS615908A (ja) * 1984-06-21 1986-01-11 Matsushita Electric Ind Co Ltd 反応性射出成形機の混合部の洗浄方法
DE3918285A1 (de) * 1988-06-10 1990-01-25 Elastogran Polyurethane Gmbh Verfahren und vorrichtung zum spuelen (reinigen) von mischvorrichtungen fuer mehrkomponenten-kunststoffe, insbesondere polyurethan
DE3906577C1 (fr) * 1989-03-02 1990-06-13 Mgv-Moest-Spritzgeraete Produktions- Und Vertriebs-Gmbh, 8910 Landsberg, De

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 151 (M-483)(2208) 31. Mai 1986 & JP-A-61 005 908 ( MATSUSHITA ) *
PATENT ABSTRACTS OF JAPAN vol. 4, no. 30 (C-2)(512) 15. März 1980 & JP-A-55 005 960 ( MATSUSHITA ) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0709131A1 (fr) * 1994-10-26 1996-05-01 Societe Des Produits Nestle S.A. Mélange de fluides

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