DE121344C - - Google Patents
Info
- Publication number
- DE121344C DE121344C DENDAT121344D DE121344DA DE121344C DE 121344 C DE121344 C DE 121344C DE NDAT121344 D DENDAT121344 D DE NDAT121344D DE 121344D A DE121344D A DE 121344DA DE 121344 C DE121344 C DE 121344C
- Authority
- DE
- Germany
- Prior art keywords
- box
- solvent
- air
- taps
- molds
- 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.)
- Active
Links
- 239000002904 solvent Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- QGJOPFRUJISHPQ-UHFFFAOYSA-N carbon bisulphide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 claims description 4
- HEDRZPFGACZZDS-UHFFFAOYSA-N chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- 238000007654 immersion Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000003502 gasoline Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims 1
- 238000009833 condensation Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 238000011084 recovery Methods 0.000 claims 1
- 230000000875 corresponding Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241000270295 Serpentes Species 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/14—Dipping a core
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C1/00—Treatment of rubber latex
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C2/00—Treatment of rubber solutions
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Bei der Herstellung von Waaren durch den Tauchprocefs wird bekanntlich in der Weise verfahren, dafs man Gummi oder ähnliche Materialien mit Hülfe von Lösungsmitteln (Benzin, Alkohol, Schwefelkohlenstoff, Aether, Chloroform etc.) verflüssigt und in die erhaltene Lösung die den herzustellenden Waaren entsprechenden Formen eintaucht, worauf man das Lösungsmittel an der Luft verdunsten lä'fst und darauf den Tauchprocefs event, wiederholt,- je nachdem man dünnere oder dickere Schichten auf die Form aufbringen will. Bei der Ausführung dieses Verfahrens ist es jedoch bis jetzt nicht möglich gewesen, die beim Trocknen der Waaren entweichenden Lösungsmittel zurückzugewinnen.In the production of goods by the immersion process is known in the way procedure that rubber or similar materials are used with the aid of solvents (Gasoline, alcohol, carbon disulfide, ether, chloroform, etc.) liquefied and in the received Solution immersed the shapes corresponding to the goods to be manufactured, whereupon one let the solvent evaporate in the air and thereupon the immersion process event, repeated, depending on whether you want to apply thinner or thicker layers to the mold. However, when performing this procedure it is up to now it has not been possible to use the solvents escaping when drying the goods to win back.
Es hing dies damit zusammen, dafs es sich bis jetzt als unmöglich erwies, die hierbei auftretenden Gasgemische von Lösungsmittel und Luft, welche aufser ihrer Explosionsgefahr auch noch gesundheitsschädlich waren, auf eine möglichst einfache technische Art wieder von einander zu trennen, unter Wiedergewinnung des Lösungsmittels als Flüssigkeit.This was connected with the fact that it has so far proven impossible to do the things that have occurred Gas mixtures of solvents and air, which because of their risk of explosion were still harmful to health, in the simplest technical way possible to separate each other, recovering the solvent as a liquid.
Bei dem neuen Verfahren sucht man nun bei dem Fabrikationsprocesse die Anwesenheit von Luft möglichst zu vermeiden, indem der gesammte Procefs in eisernen Kästen vorgenommen wird, welche nach dem Einbringen der entsprechenden Formen evacuirt werden, so dafs nach Einführung des Lösungsmittels nur dessen Dämpfe mit Spuren von Luft gemischt vorhanden sind. Das Lösungsmittel wird durch entsprechende Vorrichtungen eingebracht, die Formen eingetaucht, abtropfen gelassen und alsdann der überschüssige. Theil des Lösungsmittels wieder entfernt.With the new method, one now looks for presence in the manufacturing process to avoid air as much as possible, by carrying out the whole process in iron boxes which are evacuated after the introduction of the appropriate forms, so that after the introduction of the solvent only the vapors of which are present mixed with traces of air. The solvent is introduced by means of appropriate devices, the molds are dipped and drained relaxed and then the excess. Part of the solvent removed again.
Zur Erläuterung des Verfahrens mag folgendes Beispiel dienen:The following example may serve to explain the procedure:
Der von dem Kasten A durch die Hähne a und b abgesperrte Behälter F wird bei Beginn des Arbeitsprocesses mit Gummilösung vollständig gefüllt und gegen die atmosphärische Luft abgeschlossen. Alsdann werden die Kästen A und H, nachdem das Formbrett B mit den entsprechenden Formen eingebracht ist, evacuirt und hierauf die Gummilösung durch Oeffnen der Hähne α und b aus dem Behälter F in den Tauchkasten C eingesaugt bezw. mit Hülfe der Pumpe E eingepumpt. Der Tauch kasten C wird durch die Kolben D hydraulisch gehoben, die Formen hierdurch in die Lösung eingetaucht und die Kolben hierauf wieder gesenkt. Nachdem die überschüssige Gummilösung von den Formen abgetropft ist, wird sie aus dem Kasten C in den Behälter F zurückgepumpt und die Hähne α und b geschlossen. In dem Kasten H befindet sich die Verdampfer- (Refrigator-) Schlange J einer Kühlbezw. Luftverflüssigungsmaschine und ein Ventilator G. Durch den. Ventilator G werden die Lösungsmitteldämpfe angesaugt und durch das in der Spirale verdampfende Kältemedium so weit abgekühlt, bis sich das in Dampfform befindliche Lösungsmittel in Form von Schnee an der Aufsenseite der Schlange niederschlägt. The container F , which is shut off from the box A by the taps a and b , is completely filled with rubber solution at the beginning of the work process and sealed from the atmospheric air. Then the boxes A and H are evacuated after the molding board B with the corresponding molds has been introduced and then the rubber solution is sucked in resp. By opening the taps α and b from the container F into the immersion box C. pumped in with the aid of pump E. The plunger box C is lifted hydraulically by the piston D , the molds are thereby immersed in the solution and the pistons are then lowered again. After the excess rubber solution has drained from the molds, it is pumped back from the box C into the container F and the taps α and b are closed. In the box H is the evaporator (refrigerator) coil J of a Kühlbezw. Air liquefaction machine and a fan G. Through the. Fan G the solvent vapors are sucked in and cooled down by the cooling medium evaporating in the spiral until the solvent in vapor form is deposited in the form of snow on the outside of the snake.
Die abgekühlten Lösungsmitteldämpfe, die sich bei der in den Formenkästen herrschenden Temperatur in ungesättigtem Zustande befinden, werden durch die Rohrleitung f zu erneuter Sättigung in den Kasten A zurückgeleitet. Die Hähne c und d dienen dazu, nach Beendigung des Processes den Kasten A gegen den Kasten H abzuschliefsen, . damit beim Wiederbeginn des Processes nur der Kasten A von Neuem- zu evacuiren ist.The cooled solvent vapors, which are in an unsaturated state at the temperature prevailing in the mold boxes, are returned to box A through pipe f for renewed saturation. The taps c and d serve to close the box A against the box H after the end of the process,. so that when the process is restarted only box A has to be evacuated again.
Claims (1)
Verfahren zur Wiedergewinnung der beim Tauchprocefs zur Auflösung des Materials verwendeten Lösungsmittel, wie Benzin, Schwefelkohlenstoff, Aether, Chloroform, Alkohol, dadurch gekennzeichnet, dafs der gesammte Fabrikationsprocefs unter Luftabschlufs ausgeführt wird, und die hierbei auftretenden Lösungsmitteldämpfe durch Kühlung zur Condensation gebracht werden.Patent claim:
Process for the recovery of the solvents used in the immersion process to dissolve the material, such as gasoline, carbon disulfide, ether, chloroform, alcohol, characterized in that the entire manufacturing process is carried out with the exclusion of air, and the solvent vapors that occur are brought to condensation by cooling.
Publications (1)
Publication Number | Publication Date |
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DE121344C true DE121344C (en) |
Family
ID=390347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DENDAT121344D Active DE121344C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE121344C (en) |
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- DE DENDAT121344D patent/DE121344C/de active Active
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