DE1051175B - Process for coating the inner surfaces of heated hollow bodies with powdery, meltable coating agents that are swirled up by a gas stream - Google Patents
Process for coating the inner surfaces of heated hollow bodies with powdery, meltable coating agents that are swirled up by a gas streamInfo
- Publication number
- DE1051175B DE1051175B DEF20961A DEF0020961A DE1051175B DE 1051175 B DE1051175 B DE 1051175B DE F20961 A DEF20961 A DE F20961A DE F0020961 A DEF0020961 A DE F0020961A DE 1051175 B DE1051175 B DE 1051175B
- Authority
- DE
- Germany
- Prior art keywords
- hollow bodies
- lined
- chamber
- hollow body
- heated
- 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
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
- B05D7/222—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
- B05D1/22—Processes for applying liquids or other fluent materials performed by dipping using fluidised-bed technique
- B05D1/24—Applying particulate materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
- B05D2401/30—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant
- B05D2401/32—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant applied as powders
Description
DEUTSCHES M*m, PATENTAMTGERMAN M * m, PATENT OFFICE
kl 75c ύkl 75c ύ
INTERNAT KL B 44 U INTERNAT KL B 44 U
ANMELDETAGREGISTRATION DAY
BEKANNTMACHUNGNOTICE
DER ANMELDUNG
UND AUSGABE DER
AUSLEGESCHRIFTTHE REGISTRATION
AND ISSUE OF THE
EDITORIAL
F 209611Vc/75 cF 209611Vc / 75 c
4. AUGUST 1956 19. FEBRUAR 1959 AUGUST 4, 1956 FEBRUARY 19, 1959
Zur Herstellung von Schutzuberzugen aus Stoffen, die einen niedrigeren Schmelzpunkt als das Material haben, aus dem der zu überziehende Gegenstand be steht, ist es bereits bekannt, den Gegenstand in er warmtem Zustand m den pulverformigen Schutzstoö, beispielsweise Kunststoffpulver einzutauchen, wobei das Pulver durch eintn aufsteigenden, durch das Pulver hindurchgehenden Luft oder Gasstrom aufgewirbelt wird und sich in einem flussigkeitsahnlichen Zu stand befindetFor the production of protective covers from substances that have a lower melting point than the material that the object to be coated is made of, it is already known to include the object in it in a warm state m the powdery protective materials, For example, to dip plastic powder, the powder rising through the powder passing air or gas flow is whirled up and in a liquid-like to stand is located
Dieses Verfahren hat den Vorteil daß der pulverformige Schutzstoff gleichmäßig an alle Stellen des zu überziehenden Gegenstandes gelangt Nachteilig ist dabei, daß Hohlkörper, die nur innen mit einer Schutzschicht versehen werden sollen, beim Eintauchen auch auf der Außenseite den Überzug erhalten Ist dieser äußere Überzug unerwünscht, so muß er anschließend wieder entfernt werden Um dies zu vermeiden, besteht zwar die Möglichkeit, die Außenflachen vor dem Eintauchen in das Pulverbad durch Manschetten od dgl abzudecken Dies bedeutet aber einen zusätzlichen Arbeitsaufwand und bereitet auch bei komplizierten Formen SchwierigkeitenThis method has the advantage that the powdery protective substance is applied evenly to all points The disadvantage is that the hollow body, which is only covered with a protective layer on the inside are to be provided, when immersed, the coating is also obtained on the outside. If this is the case outer coating undesirable, it must then be removed again. To avoid this, there is although the possibility of the outer surfaces in front of the To cover immersion in the powder bath with cuffs or the like, but this means an additional one Workload and causes difficulties even with complicated shapes
Gemäß der Erfindung werden bei Hohlkörpern die Innenflachen in der Weise mit einem Schutzuberzug versehen daß die Aufwirbelung des pulverformigen Schutzstoffs in einer geschlossenen Kammer erfolgt, aus der em Strom des aufgewirbelten Schutzstoffes durch Verstärkung des Gasstromes in das Innere des erwärmten Hohlkörpers gedruckt wird Der direkt an der Wirbelkammer angeschlossene oder durch em Rohr oder Schlauch mit ihr verbundene Hohlkörper wird vorzugsweise oberhalb der Kammer angeordnet, wobei der Anschluß an der Kammer jedoch beliebig ist, d h der Hohlkörper bzw die Leitung kann am Deckel oder an einer Seitenwand der Kammer angesetzt werden Es wurde gefunden, daß das Einleiten des Wirbelstroms in den Hohlkörper durch die Regelung des Drucks der zugefuhrten Luft bzw Gases so gesteuert werden kann daß em ganz genaues Em stellen des Pulverbadspiegels im Hohlkörper möglich ist Dieser kann also bis zur gewünschten Hohe mit der Schutzschicht versehen werdenAccording to the invention, the hollow bodies Inner surfaces in the way with a protective cover provided that the pulverulent protective substance is whirled up in a closed chamber, from the em stream of the whirled up protective substance by amplifying the gas flow into the interior of the heated hollow body, the pressure is applied directly the vortex chamber connected to it or connected to it by a tube or hose is preferably arranged above the chamber, but the connection to the chamber is optional is, i.e. the hollow body or the line can be on Lid or to be attached to a side wall of the chamber It has been found that the discharge of the eddy current in the hollow body through the regulation the pressure of the supplied air or gas can be controlled so that em very precise Em it is possible to place the powder bath level in the hollow body So this can be used up to the desired height the protective layer are provided
Handelt es sich um Hohlkörper, die auf ihrer ganzen Lange mit der inneren Schutzschicht versehen werden sollen, so empfiehlt es sich auf den Hohlkor per einen Stutzen als Verlängerung aufzusetzen, so daß der Pulverbadspiegel genügend hoch eingestellt werden kann, ohne daß Verluste an Pulver durch Überströmen entstehenIs it a hollow body that is on its should be provided with the inner protective layer for the entire length, it is recommended to use the hollow core put on by a nozzle as an extension, so that the powder bath level is set high enough without loss of powder caused by overflow
Im Gegensatz zu dem bisher bekannten Tauchver fahren ermöglicht es die Erfindung, nur die Innenflächen von Hohlkörpern durch aufgewirbeltes Pulver mit einer Schutzschicht zu versehen, ohne daß zusatz-Verfahren zum ÜberziehenIn contrast to the previously known Tauchver drive, the invention allows only the inner surfaces to provide hollow bodies with a protective layer by whirling up powder, without additional processes to cover
der Innenflachen erhitzter Hohlkörperthe inner surfaces of heated hollow bodies
mit durch einen Gasstrom aufgewirbelten,with whirled up by a gas flow,
pulverformigen, schmelzbarenpowdery, fusible
UberzugsmittelnCoating agents
Anmelder:Applicant:
Fürstlich HohenzollernschePrincely Hohenzollernsche
Huttenverwaltung Laucherthal,Huttenverwaltung Laucherthal,
Laucherthal (Kr. Sigmaringen)Laucherthal (Kr. Sigmaringen)
Ernst Schlechtendahl Sigmaringendorf,Ernst Schlechtendahl Sigmaringendorf,
Dipl -Ing Erhard Weisner, SigmaringenDipl -Ing Erhard Weisner, Sigmaringen
Dipl -Ing Gerhard Bunge, Sigmarmgendorf,Dipl -Ing Gerhard Bunge, Sigmarmgendorf,
Dipl -Chem Dr Gerhard Boltz,Dipl-Chem Dr Gerhard Boltz,
Laucherthal (Kr Sigmaringen),Laucherthal (Kr Sigmaringen),
Dipl -Ing Horst Erbe Sigmaringen,Dipl -Ing Horst Erbe Sigmaringen,
und WiIh Haas, Saulgau (Wurtt),and WiIh Haas, Saulgau (Wurtt),
sind als Erfinder genannt wordenhave been named as inventors
liehe Maßnahmen, wie Abdecken der Außenflachen,borrowed measures, such as covering the outer surfaces,
ei forderlich sind Matenalverluste, wie sie beim Mituberziehen der Außenflachen entstehen, treten nicht emMaterial losses, such as those caused by pulling over, are also required the outer surfaces arise, do not step em
In der Zeichnung sind in Fig 1 bis 4 Vorrichtungen zur Ausfuhrung des Verfahrens schematisch dar-In the drawing, devices are shown in FIGS. 1 to 4 to carry out the process schematically
gestelltposed
Bei der Vorrichtung nach der Fig 1 ist innerhalb eines Gefäßes bzw einer Kammer K eine poröse Bodenplatte P so vorgesehen daß zwischen ihr und dem eigentlichen Gefaßboden noch em ZwischenraumIn the device according to FIG. 1, a porous base plate P is provided within a vessel or a chamber K so that there is still an intermediate space between it and the actual vessel base
verbleibt Durch einen Anschluß im Gefaßboden wird em Luftstrom L zugeführt, und die Luft verteilt sich infolge der porösen Bodenplatte gleichmäßig über den Kammerquerschnitt, wodurch das oberhalb der Bodenplatte P befindliche pulverformige Gut G aufgewirbeltremains Through a connection in the bottom of the vessel, an air stream L is supplied, and the air is distributed evenly over the cross-section of the chamber due to the porous bottom plate, whereby the powdery material G located above the bottom plate P is whirled up
v\ird und innerhalb der Kammer einen flussigkeits ähnlichen Zustand annimmtv \ ird and inside the chamber a liquid assumes a similar state
Wahrend dieses Pulverbad bisher dazu benutzt wurde, um die zu überziehenden, zu diesem Zweck über den Schmelzpunkt des Pulvers erhitzten GegenWhile this powder bath was previously used to coat the ones to be coated, for this purpose Counter heated above the melting point of the powder
Claims (2)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE569893D BE569893A (en) | 1956-08-04 | ||
LU36295D LU36295A1 (en) | 1956-08-04 | ||
DEF20961A DE1051175B (en) | 1956-08-04 | 1956-08-04 | Process for coating the inner surfaces of heated hollow bodies with powdery, meltable coating agents that are swirled up by a gas stream |
FR1199668D FR1199668A (en) | 1956-08-04 | 1958-06-17 | Method for heat coating the inner surface of hollow bodies by means of a powdered fusible coating agent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF20961A DE1051175B (en) | 1956-08-04 | 1956-08-04 | Process for coating the inner surfaces of heated hollow bodies with powdery, meltable coating agents that are swirled up by a gas stream |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1051175B true DE1051175B (en) | 1959-02-19 |
Family
ID=7089875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEF20961A Pending DE1051175B (en) | 1956-08-04 | 1956-08-04 | Process for coating the inner surfaces of heated hollow bodies with powdery, meltable coating agents that are swirled up by a gas stream |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE569893A (en) |
DE (1) | DE1051175B (en) |
FR (1) | FR1199668A (en) |
LU (1) | LU36295A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3074808A (en) * | 1959-10-19 | 1963-01-22 | Phillips Petroleum Co | Method and apparatus for coating the interior of a pipe |
US3138483A (en) * | 1960-01-11 | 1964-06-23 | Polymer Processes Inc | Apparatus for coating interior of hollow body |
US3142579A (en) * | 1960-02-05 | 1964-07-28 | Engelhard Hanovia Inc | Internal coating of flanged hollow bodies |
US3185131A (en) * | 1960-10-24 | 1965-05-25 | Gen Motors Corp | Apparatus for coating articles in a fluidized bed |
US3218184A (en) * | 1956-05-28 | 1965-11-16 | Jerome H Lemelson | Apparatus and method for coating pipe |
US3260611A (en) * | 1963-02-13 | 1966-07-12 | Polymer Corp | Coating method |
US3295494A (en) * | 1958-09-25 | 1967-01-03 | Internat Protected Metals Inc | Fluidized bed apparatus for coating the interior of hollow body |
US3432326A (en) * | 1956-05-28 | 1969-03-11 | Dow Chemical Co | Method for coating pipe |
DE1571036B1 (en) * | 1960-01-11 | 1972-07-06 | Knapsack Ag | PROCESS FOR COVERING THE INNER SURFACE OF LONG STRETCHED HOLLOW BODIES, IN PARTICULAR PIPES |
AT383096B (en) * | 1983-04-18 | 1987-05-11 | Oesterr Salen Kunststoffwerk | TRANSPORT CONTAINER FOR DANGEROUS GOODS |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4089998A (en) * | 1976-07-13 | 1978-05-16 | Gibson Jack Edward | Method of powder coating the interior of tubular goods |
-
0
- LU LU36295D patent/LU36295A1/xx unknown
- BE BE569893D patent/BE569893A/fr unknown
-
1956
- 1956-08-04 DE DEF20961A patent/DE1051175B/en active Pending
-
1958
- 1958-06-17 FR FR1199668D patent/FR1199668A/en not_active Expired
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3218184A (en) * | 1956-05-28 | 1965-11-16 | Jerome H Lemelson | Apparatus and method for coating pipe |
US3432326A (en) * | 1956-05-28 | 1969-03-11 | Dow Chemical Co | Method for coating pipe |
US3295494A (en) * | 1958-09-25 | 1967-01-03 | Internat Protected Metals Inc | Fluidized bed apparatus for coating the interior of hollow body |
US3074808A (en) * | 1959-10-19 | 1963-01-22 | Phillips Petroleum Co | Method and apparatus for coating the interior of a pipe |
US3138483A (en) * | 1960-01-11 | 1964-06-23 | Polymer Processes Inc | Apparatus for coating interior of hollow body |
DE1571036B1 (en) * | 1960-01-11 | 1972-07-06 | Knapsack Ag | PROCESS FOR COVERING THE INNER SURFACE OF LONG STRETCHED HOLLOW BODIES, IN PARTICULAR PIPES |
US3142579A (en) * | 1960-02-05 | 1964-07-28 | Engelhard Hanovia Inc | Internal coating of flanged hollow bodies |
US3185131A (en) * | 1960-10-24 | 1965-05-25 | Gen Motors Corp | Apparatus for coating articles in a fluidized bed |
US3260611A (en) * | 1963-02-13 | 1966-07-12 | Polymer Corp | Coating method |
AT383096B (en) * | 1983-04-18 | 1987-05-11 | Oesterr Salen Kunststoffwerk | TRANSPORT CONTAINER FOR DANGEROUS GOODS |
Also Published As
Publication number | Publication date |
---|---|
LU36295A1 (en) | |
BE569893A (en) | |
FR1199668A (en) | 1959-12-15 |
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