DE750651C - Closing or separating plate for gas tracers - Google Patents
Closing or separating plate for gas tracersInfo
- Publication number
- DE750651C DE750651C DE1940750651D DE750651DD DE750651C DE 750651 C DE750651 C DE 750651C DE 1940750651 D DE1940750651 D DE 1940750651D DE 750651D D DE750651D D DE 750651DD DE 750651 C DE750651 C DE 750651C
- Authority
- DE
- Germany
- Prior art keywords
- fleece
- chemisches zentralblatt
- chemisches
- zentralblatt
- closing
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Biophysics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Nonwoven Fabrics (AREA)
Description
• Bei der Füllung der Prüfröhrchen, die zum Nachweis von Giftgasen in def Luft oder am Boden dienen, werden zur Abdeckung der Gel- oder Diatomitsdhichten bzw. zur Tren-S nung mehrerer Schichten Plättchen verwendet, die aus gasdurchlässigem Glasfaservließ bestehen. Die Herstellung dieser kleinen, im Durchmesser etwa 8 mm großen Plättchen für den Massenverbrauch bereitet aber Schwierigkeiterf, da beim Ausstanzen derselben aus einem gewöhnlichen Glasfaservließ das Material meist in kurze Stücke zerfällt. Diese Schwierigkeiten werden erfindungsgemäß dadurch vermieden, daß das Glasfaservließ mit solchen Lösungen oder Emulsionen von Kunstharzen und ähnlichen Klebemitteln vorbehandelt wird, die bei der Prüfreaktion im Röhrchen unschädlich, d. h. chemisch inaktiv sind. Zu dem Zweck kann das gewöhnliehe Vließ mit Lösungen oder Emulsionen von Polyvinylacetaten oder -Chloriden oder Gemischen derselben, Polyisobutylene^ PoIyacrylsäureestern u. dgl. getränkt werden, wobei der Überschuß in Walzen abgequetscht und das Vließ getrocknet wird. Durch die *5 dem Glas eigene Federkraft öffnet sich dann das Vließ wieder etwas, so daß es gasdurchlässig wird. Es können aber auch auf die zur Vließbildung dienenden Glasfaden vorher Lösungen oder Emulsionen der vorgenannten Klebemittel, beispielsweise mittels Spritzpistole, aufgebracht werden, und aus diesen Fäden erst wird dann in üblicher Weise das Vließ gebildet.• When filling the test tube, which is used to detect poisonous gases in def air or on Serve to cover the gel or diatomite layers or for Tren-S Several layers of platelets made of gas-permeable glass fiber fleece are used exist. The production of these small plates, about 8 mm in diameter for the mass consumption, however, it is difficult because of the punching out of the same from a normal fiberglass fleece, the material usually breaks up into short pieces. These difficulties are avoided according to the invention in that the glass fiber fleece is pretreated with such solutions or emulsions of synthetic resins and similar adhesives that are used in the test reaction harmless in the tube, d. H. are chemically inactive. To that end, this can be habitual Fleece with solutions or emulsions of polyvinyl acetates or chlorides or Mixtures of the same, polyisobutylenes ^ polyacrylic acid esters and the like, the excess being squeezed off in rollers and the fleece being dried. Through the * 5 The spring force of the glass then opens the fleece again a little so that it is gas-permeable will. However, solutions can also be applied beforehand to the glass threads used to form the fleece or emulsions of the aforementioned adhesives, for example using a spray gun, are applied, and only then the fleece is formed in the usual way from these threads.
Aus solchen Vließen lassen sich in einfachster Weise gebrauchsfähige Plättchen im Massenbetrieb durch Ausstanzen erzeugen.From such fleece can be used platelets in the simplest way Generate mass production by punching.
Die Verarbeitung von Glasfasern mit Bindemitteln ist an sich bekannt. So sind Glasfasern unter Zusatz eines Bindemittels zu einer festen Schicht gewalzt worden. Ferner wurden Glasfasern in plastische Bindemittel eingebettet, die den gleichen Brechungsindex aufwiesen, so daß die erhaltene kompakte Masse durchsichtig war. Auch bei der Herstellung von IsolierkörpernThe processing of glass fibers with binders is known per se. So are Glass fibers have been rolled into a solid layer with the addition of a binder. Furthermore, glass fibers were embedded in plastic binders, which are the same Had refractive index so that the resulting compact mass was transparent. Also in the manufacture of insulating bodies
WUWU
aus Glaswolle sind leimartige Substanzen oder andere Stoffe wie Zellulosederivate, Polyvinylverbindungen oder trocknende öle aufgebracht worden. Diese hatten aber nur den Zweck, die Formarbeit zu erleichtern und das Absplittern kleiner Teile zu verhindern.made of glass wool are glue-like substances or other substances such as cellulose derivatives, Polyvinyl compounds or drying oils have been applied. But these only had the purpose of making molding work easier and preventing small parts from chipping.
Bei allen diesen Erzeugnissen wurde inAll of these products were made in
keinem Fall Wert auf hohe LuftdurchläsIn no case value high air flow
keit gelegt. Auch wurden nach den besclaid. Also after the besc
ίο benen Verfahren keine kleinen Platt
durch Ausstanzen gefertigt. Allerdings
den die Bindemittel auch durch Aufsprühen mit einer Pistole aufgebracht oder die präparierte
Masse gewalzt. Jedoch geschah dies nicht unter dem Gesichtspunkt einer hohen Luftdurchlässigkeit, sondern um das Material
zu einer festen kompakten Masse zu walzen. Demgegenüber wird nach der Erfindung zur
Auflockerung des Faservließes der Überschußίο the procedure no small flat
manufactured by punching. However
which the binding agent is also applied by spraying with a gun or the prepared mass is rolled. However, this was not done from the point of view of high air permeability, but rather to roll the material into a solid, compact mass. In contrast, according to the invention, the excess is used to loosen the fiber fleece
«ο des Bindemittels durch Walzen abgequetscht und das Vließ anschließend getrocknet.«Ο of the binding agent squeezed off by rollers and then dried the fleece.
Claims (3)
(Chemisches Zentralblatt,
S. 497);Swedish patent specification.
(Chemisches Zentralblatt,
P. 497);
(Chemisches Zentralblatt,
S. 3009), Nr. 48 105, Zusatz zu Nr. 817 108 (Chemisches Zentralblatt, 1938, 1, 2, S. 2965), Nr. 853 142 (Chemisches Zentralblatt, 1940, II, 2, S. 1337).French patents
(Chemisches Zentralblatt,
P. 3009), No. 48 105, addition to No. 817 108 (Chemisches Zentralblatt, 1938, 1, 2, p. 2965), No. 853 142 (Chemisches Zentralblatt, 1940, II, 2, p. 1337).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE750651T | 1940-12-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE750651C true DE750651C (en) | 1945-01-23 |
Family
ID=6650603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1940750651D Expired DE750651C (en) | 1940-12-21 | 1940-12-21 | Closing or separating plate for gas tracers |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE750651C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE953841C (en) * | 1953-04-25 | 1956-12-06 | Draegerwerk Ag | Valve for gas detonators |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH74588A (en) * | 1916-09-30 | 1917-03-16 | Philipp Gerber | Portable device for pressing bulk goods that can be pressed into bales |
US1938982A (en) * | 1932-10-14 | 1933-12-12 | Smith Edward Wanton | Method of making glass wool separators |
FR817108A (en) * | 1933-08-22 | 1937-08-26 | Saint Gobain | Industrial glass fiber product and process for manufacturing this product |
FR48105E (en) * | 1936-12-31 | 1937-10-25 | Saint Gobain | Industrial glass fiber product and process for manufacturing this product |
FR845489A (en) * | 1938-10-31 | 1939-08-24 | Ig Farbenindustrie Ag | Process for improving insulating layers composed of glass filaments and mineral wool |
FR853142A (en) * | 1938-04-16 | 1940-03-11 | Thomson Houston Comp Francaise | Improvements to electrically insulated conductors and corresponding new insulators |
-
1940
- 1940-12-21 DE DE1940750651D patent/DE750651C/en not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH74588A (en) * | 1916-09-30 | 1917-03-16 | Philipp Gerber | Portable device for pressing bulk goods that can be pressed into bales |
US1938982A (en) * | 1932-10-14 | 1933-12-12 | Smith Edward Wanton | Method of making glass wool separators |
FR817108A (en) * | 1933-08-22 | 1937-08-26 | Saint Gobain | Industrial glass fiber product and process for manufacturing this product |
FR48105E (en) * | 1936-12-31 | 1937-10-25 | Saint Gobain | Industrial glass fiber product and process for manufacturing this product |
FR853142A (en) * | 1938-04-16 | 1940-03-11 | Thomson Houston Comp Francaise | Improvements to electrically insulated conductors and corresponding new insulators |
FR845489A (en) * | 1938-10-31 | 1939-08-24 | Ig Farbenindustrie Ag | Process for improving insulating layers composed of glass filaments and mineral wool |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE953841C (en) * | 1953-04-25 | 1956-12-06 | Draegerwerk Ag | Valve for gas detonators |
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