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FR2211342A1 - Mixer for liquid plastics giving reduced turbulence - has divergent outlet from mixing chamber leading to mould - Google Patents

Mixer for liquid plastics giving reduced turbulence - has divergent outlet from mixing chamber leading to mould

Info

Publication number
FR2211342A1
FR2211342A1 FR7341541A FR7341541A FR2211342A1 FR 2211342 A1 FR2211342 A1 FR 2211342A1 FR 7341541 A FR7341541 A FR 7341541A FR 7341541 A FR7341541 A FR 7341541A FR 2211342 A1 FR2211342 A1 FR 2211342A1
Authority
FR
France
Prior art keywords
mixing chamber
pref
mould
divergent outlet
mixer
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.)
Granted
Application number
FR7341541A
Other languages
French (fr)
Other versions
FR2211342B3 (en
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.)
Mannesmann Demag Krauss Maffei GmbH
Original Assignee
Krauss Maffei 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 Krauss Maffei AG filed Critical Krauss Maffei AG
Publication of FR2211342A1 publication Critical patent/FR2211342A1/en
Application granted granted Critical
Publication of FR2211342B3 publication Critical patent/FR2211342B3/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3442—Mixing, kneading or conveying the foamable material
    • 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
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/76—Mixers with stream-impingement mixing head
    • B29B7/7663—Mixers with stream-impingement mixing head the mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube
    • 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
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/76—Mixers with stream-impingement mixing head
    • B29B7/7663—Mixers with stream-impingement mixing head the mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube
    • B29B7/7684—Parts; Accessories
    • B29B7/7689—Plunger constructions
    • B29B7/7694—Plunger constructions comprising recirculation channels; ducts formed in the plunger

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Two liquid plastic components (e.g. polyisocyanate and polyol) are fed pref. through separate inlets into a pref. cylindrical mixing chamber and pref. a hydraulically driven piston is slideable in the mixing chamber to force the mixed components through a divergent outlet duct into a mould. Pref. when the piston is completely located in the mixing chamber the separate inlets coincide with recesses in the piston so that the plastic components flow into the recesses and pass into return ducts. The divergent outlet duct reduces turbulence in the liquid plastic mixt., reducing air bubbles and providing a better quality prod.
FR7341541A 1972-12-22 1973-11-22 Mixer for liquid plastics giving reduced turbulence - has divergent outlet from mixing chamber leading to mould Granted FR2211342A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE7246832 1972-12-22

Publications (2)

Publication Number Publication Date
FR2211342A1 true FR2211342A1 (en) 1974-07-19
FR2211342B3 FR2211342B3 (en) 1976-10-01

Family

ID=6634612

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7341541A Granted FR2211342A1 (en) 1972-12-22 1973-11-22 Mixer for liquid plastics giving reduced turbulence - has divergent outlet from mixing chamber leading to mould

Country Status (3)

Country Link
JP (1) JPS4990351A (en)
BR (1) BR7309907D0 (en)
FR (1) FR2211342A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260564A2 (en) * 1986-09-10 1988-03-23 Bayer Ag Method and device for continuously making a plastic material, essentially a liquid reactive mixture for making foam, from at least two liquid components

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260564A2 (en) * 1986-09-10 1988-03-23 Bayer Ag Method and device for continuously making a plastic material, essentially a liquid reactive mixture for making foam, from at least two liquid components
EP0260564A3 (en) * 1986-09-10 1988-11-30 Bayer Ag Method and device for continuously making a plastic material, essentially a liquid reactive mixture for making foam, from at least two liquid components

Also Published As

Publication number Publication date
BR7309907D0 (en) 1974-08-29
FR2211342B3 (en) 1976-10-01
JPS4990351A (en) 1974-08-29

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Legal Events

Date Code Title Description
ST Notification of lapse