GB1417377A - Method of and a machine for manufacturing foam especially polyurethane foam from a free-flowing reaction mixture - Google Patents

Method of and a machine for manufacturing foam especially polyurethane foam from a free-flowing reaction mixture

Info

Publication number
GB1417377A
GB1417377A GB1447574A GB1447574A GB1417377A GB 1417377 A GB1417377 A GB 1417377A GB 1447574 A GB1447574 A GB 1447574A GB 1447574 A GB1447574 A GB 1447574A GB 1417377 A GB1417377 A GB 1417377A
Authority
GB
United Kingdom
Prior art keywords
pipe
mixer
mixing head
residence
time unit
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.)
Expired
Application number
GB1447574A
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.)
Maschinenfabrik Hennecke GmbH
Hennecke GmbH
Original Assignee
Maschinenfabrik Hennecke GmbH
Hennecke 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 Maschinenfabrik Hennecke GmbH, Hennecke GmbH filed Critical Maschinenfabrik Hennecke GmbH
Publication of GB1417377A publication Critical patent/GB1417377A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29B7/7615—Mixers with stream-impingement mixing head characterised by arrangements for controlling, measuring or regulating, e.g. for feeding or proportioning the components
    • B29B7/7621—Mixers with stream-impingement mixing head characterised by arrangements for controlling, measuring or regulating, e.g. for feeding or proportioning the components involving introducing a gas or another component in at least one of the components

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Accessories For Mixers (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

1417377 Mixing apparatus MASCHINENFABRIK HENNECKE GmbH 2 April 1974 [5 April 1973] 14475/74 Heading B1C [Also in Division C3] An apparatus for the manufacture of plastics foam material comprises supply tanks for the foam-forming components from each of which a pipe incorporating a pump leads to a mixing head, at least one pipe incorporating a mixer into which a gas line opens, the mixer being preceded by a pressure pump and a residence-time unit incorporating a pressure generator being arranged between the mixer and the mixing head. In Fig. 1 a pipe 2 leads from a supply tank 1 to a mixing head 3, the pipe being provided with a reversing valve 4. A pump 5 delivers the component stored in tank 1 to mixing head 3 and brings it to a higher pressure level under which it is expanded into a mixer 6 through nozzle 7. A compressed air line 8, which contains a throttle valve 9 opens into mixer 6. A section 10 of the pipe 2 functions as a residence-time unit and a pressure generator 12 is arranged at an elevated point 11. A recycle pipe 15 terminates in a reversing valve 4. The residence-time unit 10 is fitted with a measuring element 16 which transmits its measured valve to a controller 17 which compares it with a preset value and adjusts valve 9 through adjusting member 18. The second component is delivered to the mixing head through a pipe 19 and a metering pump 20. In Fig. 2 a similar apparatus is shown, which differs from the apparatus of Fig. 1 in that the residence-time unit is in the form of an intermediate container 30, a pressure generator 32 being arranged on the upper part 31 of the intermediate container. A useful mixer for the process is shown in Fig. 3. In this a pipe 43 opens through a nozzle 44 into one end 45 of an outer shell 46. A compressed air line 47 opens adjacent the same end, but at the periphery. A radial wall 48 adjoined by an inner concentric shell 50 is arranged in the shell 46 at a point corresponding to about one third of the length of the mixer 42. The wall 48 is provided with perforations 51 and, at its rear end, is closed by an end wall 52 arranged at a distance from the second end wall 53 of the outer shell 46. The pipe 43 leads off from the wall 53.
GB1447574A 1973-04-05 1974-04-02 Method of and a machine for manufacturing foam especially polyurethane foam from a free-flowing reaction mixture Expired GB1417377A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732317152 DE2317152B2 (en) 1973-04-05 1973-04-05 METHOD AND DEVICE FOR PRODUCING FOAM, IN PARTICULAR POLYURETHANE FOAM, FROM A FLOWABLE REACTION MIXTURE

Publications (1)

Publication Number Publication Date
GB1417377A true GB1417377A (en) 1975-12-10

Family

ID=5877141

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1447574A Expired GB1417377A (en) 1973-04-05 1974-04-02 Method of and a machine for manufacturing foam especially polyurethane foam from a free-flowing reaction mixture

Country Status (7)

Country Link
JP (1) JPS49130958A (en)
AT (1) ATA277274A (en)
BE (1) BE813228A (en)
DE (1) DE2317152B2 (en)
FR (1) FR2224280A1 (en)
GB (1) GB1417377A (en)
NL (1) NL7404504A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059603A2 (en) * 1981-02-27 1982-09-08 Nordson Corporation Method and apparatus for controlling the density of dispensed adhesive foam
GB2116574A (en) * 1982-03-19 1983-09-28 Ici Plc Method of manufacturing polyurethane foams
GB2125308A (en) * 1982-07-30 1984-03-07 Polyrim Mfg Apparatus for nucleating a liquid chemical constituent of a reaction injection molding system
US4933115A (en) * 1984-09-19 1990-06-12 Bayer Aktiengesellschaft Process for the production of a flowable mixture which reacts to form foam from flowable components stored in storage containers

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1123167A (en) * 1978-04-11 1982-05-11 Steven M. Conover Process for the production of elastomeric moldings
EP0070324A1 (en) * 1981-07-16 1983-01-26 Union Carbide Corporation Apparatus for producing a curable polyurethane froth
DE3147160A1 (en) * 1981-11-27 1983-06-01 Bayer Ag, 5090 Leverkusen METHOD AND DEVICE FOR PRODUCING A FLOWABLE, SOLID OR FOAMING REACTION MIXTURE
DE3544914A1 (en) * 1985-12-19 1987-06-25 Elastogran Masch Bau DEVICE FOR PRODUCING A REACTION MIXTURE FROM AT LEAST TWO PLASTIC COMPONENTS
US5055272A (en) * 1989-01-13 1991-10-08 Sealed Air Corporation Method for producing polyurethane foam and apparatus therefor
DE102009016730A1 (en) * 2009-04-09 2010-10-14 Hennecke Gmbh Method for the production of a saturated solution from a polyurethane reaction component such as polyol and isocyanate, comprises dosing saturated solution from the reaction component with a dissolved repellent in a process container
JP7060397B2 (en) * 2017-02-15 2022-04-26 有限会社浦野技研 Slurry ice manufacturing equipment and manufacturing method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059603A2 (en) * 1981-02-27 1982-09-08 Nordson Corporation Method and apparatus for controlling the density of dispensed adhesive foam
EP0059603A3 (en) * 1981-02-27 1983-04-20 Nordson Corporation Method and apparatus for controlling the density of dispensed hot melt thermoplastic adhesive foam
GB2116574A (en) * 1982-03-19 1983-09-28 Ici Plc Method of manufacturing polyurethane foams
GB2125308A (en) * 1982-07-30 1984-03-07 Polyrim Mfg Apparatus for nucleating a liquid chemical constituent of a reaction injection molding system
US4933115A (en) * 1984-09-19 1990-06-12 Bayer Aktiengesellschaft Process for the production of a flowable mixture which reacts to form foam from flowable components stored in storage containers
US5002704A (en) * 1984-09-19 1991-03-26 Bayer Aktiengesellschaft Apparatus for the production of a flowable mixture which reacts to form foam from flowable components stored in storage containers

Also Published As

Publication number Publication date
BE813228A (en) 1974-10-03
JPS49130958A (en) 1974-12-16
ATA277274A (en) 1975-12-15
FR2224280A1 (en) 1974-10-31
NL7404504A (en) 1974-10-08
DE2317152A1 (en) 1974-10-17
DE2317152B2 (en) 1977-06-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee