FR2674181A1 - Device making it possible to deliver, under pressure, a mixture of at least two fluid components reacting with each other - Google Patents
Device making it possible to deliver, under pressure, a mixture of at least two fluid components reacting with each other Download PDFInfo
- Publication number
- FR2674181A1 FR2674181A1 FR9103556A FR9103556A FR2674181A1 FR 2674181 A1 FR2674181 A1 FR 2674181A1 FR 9103556 A FR9103556 A FR 9103556A FR 9103556 A FR9103556 A FR 9103556A FR 2674181 A1 FR2674181 A1 FR 2674181A1
- Authority
- FR
- France
- Prior art keywords
- mixture
- casting
- fluid
- under pressure
- head
- 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.)
- Pending
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
- B29B7/30—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
- B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
- B29B7/404—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with feeding or valve actuating means, e.g. with cleaning means
-
- 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
- B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
- B29B7/401—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft having a casing closely surrounding the rotor, e.g. with a plunger for feeding the 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
- B29B7/30—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
- B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
- B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
- B29B7/421—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with screw and additionally other mixing elements on the same shaft, e.g. paddles, discs, bearings, rotor blades of the Banbury type
-
- 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
- B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
- B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
- B29B7/428—Parts or accessories, e.g. casings, feeding or discharging means
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
- B29C48/39—Plasticisers, homogenisers or feeders comprising two or more stages a first extruder feeding the melt into an intermediate location of a second extruder
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/565—Screws having projections other than the thread, e.g. pins
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/64—Screws with two or more threads
- B29C48/645—Screws with two or more threads neighbouring threads and channels having identical configurations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
DISPOSITIF PERMETTANT DE DELIVRER SOUS PRESSION UN ME
LANGE D'AU MOINS DEUX COMPOSANTS FLUIDES REAGISSANT L'UN
AVEC L'AUTRE.DEVICE FOR DELIVERING UNDER PRESSURE ME
LANGE OF AT LEAST TWO FLUID COMPONENTS REACTING ONE
WITH THE OTHER.
La présente invention concerne un perfectionnement apporté aux installations permettant de délivrer sous pression un mélange d'au moins deux composants fluides réagissant l'un avec l'autre, et qui permettent notamment la fabrication d'articles moulés. Elle a trait plus particulièrement à un perfectionnement apporté à la tête de coulée que comporte une telle installation, et dans laquelle le mélange de produits est obtenu sous l'action d'une vis d'extrusion, commandée par un moteur à vitesse fixe ou variable. The present invention relates to an improvement made to installations making it possible to deliver under pressure a mixture of at least two fluid components reacting with each other, and which in particular allow the manufacture of molded articles. It relates more particularly to an improvement made to the casting head which such an installation comprises, and in which the mixture of products is obtained under the action of an extrusion screw, controlled by a motor at fixed or variable speed. .
La réalisation de pièces moulées obtenues par coulée simultanée d'un mélange de composants fluides, tels que par exemple résine + durcisseur, technique bien connue comme cela ressort des FR-A-2 034 913, 2 187 507 et GB-A1 335 316, implique pour sa mise en oeuvre, l'utilisation de pompes doseuses (à engrenages notamment), qui rendent difficile l'incorporation d'additifs solides permettant de donner des caractéristiques spécifiques à la pièce moulée, tel que par exemple une bonne tenue à l'abrasion qui implique de charger la résine avec de la silice, un allègement de la pièce produite par incorporation de billes de verre creuses, une coloration dans la masse nécessitant des pigments,
Si les solutions proposées à ce jour permettent l'incorporation de charges fines (dont la granulométrie est en général inférieure à dix microns), en revanche, pour des charges dures de granulométrie élevée, ou pour des charges fragiles telles que des billes de verre creuses, l'incorporation est pratiquement irréalisable compte tenu qu'elle entraîne soit une détérioration des pompes (charges dures), soit l'écrasement des billes creuses. The production of molded parts obtained by simultaneous casting of a mixture of fluid components, such as for example resin + hardener, a technique well known as is apparent from FR-A-2 034 913, 2 187 507 and GB-A1 335 316, implies for its implementation, the use of metering pumps (particularly with gears), which make it difficult to incorporate solid additives making it possible to give specific characteristics to the molded part, such as for example good resistance to abrasion which involves loading the resin with silica, lightening the part produced by incorporating hollow glass beads, coloring in the mass requiring pigments,
If the solutions proposed to date allow the incorporation of fine charges (whose particle size is generally less than ten microns), on the other hand, for hard charges of high particle size, or for fragile charges such as hollow glass beads , the incorporation is practically impracticable considering that it involves either a deterioration of the pumps (hard loads), or the crushing of the hollow balls.
Pour résoudre ce problème, il aurait pu être envisagé d'incorporer la charge en aval des pompes, immédiatement avant de réaliser la coulée du mélange de produits, mais une telle solution n'est cependant pas réalisable compte tenu du fait que lors de la coulée, le mélange se trouve sous pression. To solve this problem, it could have been envisaged to incorporate the load downstream of the pumps, immediately before carrying out the pouring of the mixture of products, but such a solution is however not feasible taking into account that during the pouring , the mixture is under pressure.
Or on a trouvé, et c'est ce qui fait l'objet de la présente invention, un dispositif de conception simple, facile à mettre en oeuvre, qui permet de résoudre ces problèmes. Now we have found, and this is what is the subject of the present invention, a device of simple design, easy to implement, which makes it possible to solve these problems.
D'une manière générale, l'invention concerne donc un dispositif qui permet non seulement de délivrer sous pression un mélange d'au moins deux composants fluides réagissant l'un avec l'autre en vue de réaliser un article moulé, mais également d'y incorporer des particules solides pouvant être grossières, dures, fragiles, et ce sans détérioration du matériel de coulée ni altération des caractéristiques des charges, notamment lorsqu'il s'agit de charges creuses (billes de verre). In general, the invention therefore relates to a device which makes it possible not only to deliver under pressure a mixture of at least two fluid components reacting with each other in order to produce a molded article, but also to incorporate solid particles which can be coarse, hard, brittle, and this without deterioration of the casting material or alteration of the characteristics of the fillers, in particular when it is about hollow fillers (glass beads).
D'une manière générale, le dispositif conforme à l'invention est constitué par une tête de coulée permettant de délivrer sous pression un mélange d'au moins deux composants fluides amenés soit simultanément soit séparément à l'intérieur de la tête, la coulée étant obtenue sous l'action d'une vis d'extrusion commandée par un moteur à vitesse fixe ou variable, et il se caractérise en ce que
- la tête de coulée est conçue de manière à former deux chambres, l'une proche de la buse de sortie dans laquelle le mélange fluide est soumis à une poussée régulière et constante, et l'autre disposée en amont (si l'on considère l'écoulement de matière), dans laquelle le mélange fluide est soumis à un brassage ou turbulence inversée par rapport à l'écoulement provoqué par la vis de coulée;;
- l'amenée des constituants (fluides et solides) est réalisée dans la zone de turbulence.In general, the device according to the invention consists of a pouring head making it possible to deliver under pressure a mixture of at least two fluid components brought either simultaneously or separately inside the head, the casting being obtained by the action of an extrusion screw controlled by a fixed or variable speed motor, and it is characterized in that
- the casting head is designed so as to form two chambers, one close to the outlet nozzle in which the fluid mixture is subjected to a regular and constant thrust, and the other arranged upstream (if we consider the flow of material), in which the fluid mixture is subjected to mixing or reverse turbulence with respect to the flow caused by the pouring screw;
- the supply of the constituents (fluids and solids) is carried out in the turbulence zone.
Selon une forme de réalisation conforme à l'invention, la zone de turbulence est obtenue en réalisant un filetage inversé dans la vis d'extrusion sur une partie de sa longueur, ce qui crée des dents ou reliefs brisant l'écoulement du fluide ; un tel filet doit avoir un pas inverse inférieur au pas normal de la vis d'extrusion. According to an embodiment in accordance with the invention, the turbulence zone is obtained by producing an inverted thread in the extrusion screw over part of its length, which creates teeth or reliefs breaking the flow of the fluid; such a thread must have a reverse pitch less than the normal pitch of the extrusion screw.
Grâce à un tel dispositif, il est possible d'incorporer à l'intérieur d'un mélange de composants fluides des charges solides, dures ou au contraire fragiles, le mélange étant réalisé de manière parfaitement homogène. Thanks to such a device, it is possible to incorporate solid, hard or fragile fillers inside a mixture of fluid components, the mixture being produced in a perfectly homogeneous manner.
L'invention et les avantages qu'elle apporte seront cependant mieux compris grâce à l'exemple de réalisation donné ci-après à titre indicatif mais non limitatif, et qui est illustré par les schémas annexés dans lesquels
- la figure 1 est une vue schématique de l'ensemble d'une installation mettant en oeuvre un dispositif conforme à l'invention
- la figure 2 est une vue de détail, en coupe longitudinale, d'une tête de coulée réalisée conformément à l'invention
- la figure 3 est une vue de détail en élévation, montrant la structure d'une forme de réalisation d'une vis permettant de créer les deux zones de traitement à l'intérieur de la tête de coulée conforme à l'invention.The invention and the advantages which it brings will however be better understood thanks to the example of embodiment given below by way of indication but not limitation, and which is illustrated by the appended diagrams in which
- Figure 1 is a schematic view of the assembly of an installation using a device according to the invention
- Figure 2 is a detail view, in longitudinal section, of a casting head produced in accordance with the invention
- Figure 3 is a detail view in elevation, showing the structure of an embodiment of a screw for creating the two treatment zones inside the casting head according to the invention.
Si l'on se reporte à la figure 1 annexée, l'invention concerne donc un dispositif, désigné par la référence générale (1), et dont un mode de réalisation est montré en détail (vu en coupe) à la figure 2, ledit dispositif étant constitué essentiellement par un ensemble dit tête de coulée" permettant de délivrer sous pression un mélange d'au moins deux composants fluides amenés soit simultanément comme illustré à la figure 1, soit séparément à l'intérieur de ladite tête, la coulée étant obtenue sous l'action d'une vis d'extrusion (2) commandée par un moteur (3) à vitesse fixe ou variable.Dans l'exemple d'installation illustrée à la figure 1, les constituants fluides sont préalablement mélangés au moyen d'un ensemble conventionnel (4) (par exemple du type illustré dans le GB-A-1 335 316 ou le FR-A-2 034 913), le mélange formé dans les proportions souhaitées étant introduit à l'intérieur de la tête de coulée (1) par l'intermédiaire d'un conduit (5). Referring to Figure 1 attached, the invention therefore relates to a device, designated by the general reference (1), and an embodiment of which is shown in detail (seen in section) in Figure 2, said device consisting essentially of a so-called casting head assembly "making it possible to deliver under pressure a mixture of at least two fluid components supplied either simultaneously as illustrated in FIG. 1, or separately inside said head, the casting being obtained under the action of an extrusion screw (2) controlled by a motor (3) at fixed or variable speed. In the installation example illustrated in FIG. 1, the fluid constituents are mixed beforehand by means of a conventional assembly (4) (for example of the type illustrated in GB-A-1 335 316 or FR-A-2 034 913), the mixture formed in the desired proportions being introduced inside the casting head (1) through a conduit (5).
Conformément à l'invention, la tête de coulée (2) est conçue de manière à permettre d'incorporer des particules solides (silice, billes de verre..). According to the invention, the casting head (2) is designed so as to allow the incorporation of solid particles (silica, glass beads, etc.).
Pour ce faire, et ainsi que cela ressort des figures 1 et 2, la tête de coulée (1) est conçue de manière à former deux chambres désignées par les références générales (6,7). La chambre (6) proche de la sortie (8) de la tête de coulée, est conçue de manière à ce que le mélange fluide soit soumis à une poussée régulière et constante, alors que l'autre chambre (7), disposée en amont, est soumise à un brassage ou turbulence inversée par rapport à l'écoulement provoqué par la vis de coulée (2). Les particules (charges) (9) sont amenées en quantité souhaitée par l'intermédiaire d'un ensemble de dosage (10) qui débouche à son extrémité (10a) (voir figure 2) dans la zone (7) où est créée la turbulence. To do this, and as is apparent from Figures 1 and 2, the casting head (1) is designed to form two chambers designated by the general references (6,7). The chamber (6) close to the outlet (8) of the casting head, is designed so that the fluid mixture is subjected to a regular and constant thrust, while the other chamber (7), arranged upstream , is subjected to mixing or turbulence reversed with respect to the flow caused by the pouring screw (2). The particles (charges) (9) are brought in desired quantity via a metering assembly (10) which opens at its end (10a) (see FIG. 2) in the zone (7) where the turbulence is created. .
Dans l'exemple de réalisation illustré, la zone de turbulence (7) est obtenue, comme cela est illustré en détail à la figure 3, en réalisant un filetage inversé dans la vis d'extrusion (2) sur une partie de sa longueur (L1), le filet réalisé ayant un pas inversé inférieur au pas normal (P) de la vis d'extrusion (2). On crée donc en surface dans la zone de longueur (L1) des dents ou reliefs séparés les uns des autres qui permettent de créer la turbulence et assurent le mélange homogène des particules à l'intérieur des composants fluides. In the illustrated embodiment, the turbulence zone (7) is obtained, as illustrated in detail in FIG. 3, by making a reverse thread in the extrusion screw (2) over part of its length ( L1), the thread produced having an inverted pitch less than the normal pitch (P) of the extrusion screw (2). We therefore create on the surface in the length zone (L1) teeth or reliefs separated from each other which make it possible to create turbulence and ensure the homogeneous mixing of the particles inside the fluid components.
A titre indicatif, il a été possible d'incorporer de manière homogène des particules de poudre de quartz (20 à 200 microns), de silice (sable technique) de 50 à 500 microns, des billes de verre creuses (50 microns) à l'intérieur d'un mélange fluide bicomposant constitué d'une résine et d'un durcisseur en réalisant une vis (2) ayant les caractéristiques suivantes
- longueur (L) = 200 m
- diamètre nominal (D) = 31,7 mm
- pas (P) du filet principal (6) = 7 mm
- épaisseur du filet principal = 3,5 mm
- profondeur de filetage = 6,5 mm
- longueur (LI) présentant un filet
à pas inversé = 120 mm
- pas du filet inversé = 5,5 mm
- épaisseur du filet inversé = 3 mm.As an indication, it was possible to homogeneously incorporate particles of quartz powder (20 to 200 microns), silica (technical sand) from 50 to 500 microns, hollow glass beads (50 microns) to the interior of a two-component fluid mixture consisting of a resin and a hardener by producing a screw (2) having the following characteristics
- length (L) = 200 m
- nominal diameter (D) = 31.7 mm
- pitch (P) of the main thread (6) = 7 mm
- thickness of main thread = 3.5 mm
- thread depth = 6.5 mm
- length (LI) with a thread
reverse pitch = 120 mm
- pitch of the inverted thread = 5.5 mm
- thickness of the inverted thread = 3 mm.
Bien entendu, l'invention n'est pas limitée à l'exemple de réalisation décrit précédemment. Comme déjà dit, il pourrait être envisagé de délivrer les constituants fluides de manière séparée à l'intérieur de la tête de coulée. Il convient de noter comme indiqué précédemment, que l'amenée de l'ensemble des constituants (fluides et solides) à l'intérieur de la tête de coulée, doit être réalisée dans la zone de turbulence (sur la longueur L1), les additifs solides étant de préférence amenés en amont de l'amenée des constituants fluides. Of course, the invention is not limited to the embodiment described above. As already said, it could be envisaged to deliver the fluid constituents separately inside the casting head. It should be noted as indicated above, that the supply of all the constituents (fluids and solids) inside the casting head must be carried out in the turbulence zone (along the length L1), the additives solids are preferably brought upstream of the supply of the fluid constituents.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9103556A FR2674181A1 (en) | 1991-03-19 | 1991-03-19 | Device making it possible to deliver, under pressure, a mixture of at least two fluid components reacting with each other |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9103556A FR2674181A1 (en) | 1991-03-19 | 1991-03-19 | Device making it possible to deliver, under pressure, a mixture of at least two fluid components reacting with each other |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2674181A1 true FR2674181A1 (en) | 1992-09-25 |
Family
ID=9411065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9103556A Pending FR2674181A1 (en) | 1991-03-19 | 1991-03-19 | Device making it possible to deliver, under pressure, a mixture of at least two fluid components reacting with each other |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2674181A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0684115A1 (en) * | 1994-05-27 | 1995-11-29 | Bayer Ag | Method and device for making a reactive mixture containing filling material |
| FR3110869A1 (en) * | 2020-06-02 | 2021-12-03 | Dut Korea Co., Ltd | MIXING HEAD UNIT WITH HIGH MIXING EFFICIENCY |
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|---|---|---|---|---|
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| US2857144A (en) * | 1956-05-15 | 1958-10-21 | Mobay Chemical Corp | Mixing device |
| US2868518A (en) * | 1957-01-08 | 1959-01-13 | Du Pont | Mixer |
| US2970817A (en) * | 1958-08-04 | 1961-02-07 | Mobay Chemical Corp | Mixing apparatus |
| FR1493426A (en) * | 1965-10-13 | 1967-09-01 | Gestion De Brevets Soc D | New mixing and pouring head for plastic foam machine |
| GB1184016A (en) * | 1967-08-12 | 1970-03-11 | Richard Zippel & Co K G | Improvements in or relating to Mixing Chambers for Mixing Liquids |
| US3843100A (en) * | 1972-07-13 | 1974-10-22 | Owens Corning Fiberglass Corp | Method and apparatus for mixing solids and liquids |
| US3920223A (en) * | 1973-07-05 | 1975-11-18 | Wallace F Krueger | Plural component mixing head |
| US3924837A (en) * | 1974-12-23 | 1975-12-09 | Upjohn Co | Agitator insert for reactive liquid polymer mixer |
| FR2310376A2 (en) * | 1974-03-06 | 1976-12-03 | Wacker Chemie Gmbh | PROCESS FOR MANUFACTURING SOFT VINYL POLYCHLORIDE FOAMS |
| EP0314874A2 (en) * | 1987-11-05 | 1989-05-10 | Herbert Prignitz | Method for delivering a foamable mixture, especially a temperature insulation material, using a mixing head for at least two reactive components in a low-pressure method |
-
1991
- 1991-03-19 FR FR9103556A patent/FR2674181A1/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR956934A (en) * | 1946-12-14 | 1950-02-10 | ||
| US2857144A (en) * | 1956-05-15 | 1958-10-21 | Mobay Chemical Corp | Mixing device |
| US2868518A (en) * | 1957-01-08 | 1959-01-13 | Du Pont | Mixer |
| US2970817A (en) * | 1958-08-04 | 1961-02-07 | Mobay Chemical Corp | Mixing apparatus |
| FR1493426A (en) * | 1965-10-13 | 1967-09-01 | Gestion De Brevets Soc D | New mixing and pouring head for plastic foam machine |
| GB1184016A (en) * | 1967-08-12 | 1970-03-11 | Richard Zippel & Co K G | Improvements in or relating to Mixing Chambers for Mixing Liquids |
| US3843100A (en) * | 1972-07-13 | 1974-10-22 | Owens Corning Fiberglass Corp | Method and apparatus for mixing solids and liquids |
| US3920223A (en) * | 1973-07-05 | 1975-11-18 | Wallace F Krueger | Plural component mixing head |
| FR2310376A2 (en) * | 1974-03-06 | 1976-12-03 | Wacker Chemie Gmbh | PROCESS FOR MANUFACTURING SOFT VINYL POLYCHLORIDE FOAMS |
| US3924837A (en) * | 1974-12-23 | 1975-12-09 | Upjohn Co | Agitator insert for reactive liquid polymer mixer |
| EP0314874A2 (en) * | 1987-11-05 | 1989-05-10 | Herbert Prignitz | Method for delivering a foamable mixture, especially a temperature insulation material, using a mixing head for at least two reactive components in a low-pressure method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0684115A1 (en) * | 1994-05-27 | 1995-11-29 | Bayer Ag | Method and device for making a reactive mixture containing filling material |
| US5770141A (en) * | 1994-05-27 | 1998-06-23 | Bayer Aktiengesellschaft | Process for the production of a filled reaction mixture |
| FR3110869A1 (en) * | 2020-06-02 | 2021-12-03 | Dut Korea Co., Ltd | MIXING HEAD UNIT WITH HIGH MIXING EFFICIENCY |
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