DE713696C - Process for coating unfired, water-sensitive writing or drawing leads with molten organic compounds - Google Patents

Process for coating unfired, water-sensitive writing or drawing leads with molten organic compounds

Info

Publication number
DE713696C
DE713696C DEST58845D DEST058845D DE713696C DE 713696 C DE713696 C DE 713696C DE ST58845 D DEST58845 D DE ST58845D DE ST058845 D DEST058845 D DE ST058845D DE 713696 C DE713696 C DE 713696C
Authority
DE
Germany
Prior art keywords
water
coating
unfired
organic compounds
molten organic
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
DEST58845D
Other languages
German (de)
Inventor
Georg Loy
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.)
JS Staedtler GmbH and Co KG
Original Assignee
JS Staedtler GmbH and Co KG
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 JS Staedtler GmbH and Co KG filed Critical JS Staedtler GmbH and Co KG
Priority to DEST58845D priority Critical patent/DE713696C/en
Priority to DEST60974D priority patent/DE729570C/en
Application granted granted Critical
Publication of DE713696C publication Critical patent/DE713696C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D13/00—Pencil-leads; Crayon compositions; Chalk compositions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Paints Or Removers (AREA)

Description

,Verfahren zum Überziehen von ungebrannten, wasserempfindlichen Schreib- oder Zeichenminen mit schmelzflüssigen organischen Verbindungen Die Erfindung betrifft das Überziehen-ungebrannter, wasserempfindlicher Schreib- oder Zeichenminen (Kopier, Farbkopier-, Tinten-oder Farbminen, Ölkreiden) mit schxnelzflüssigen organischen Verbindungen im Durchstoßverfahren., Process for coating unfired, water-sensitive writing or drawing leads with molten organic compounds The invention relates to the covering of unfired, water-sensitive writing or drawing leads (copier, Color copiers, ink or color leads, oil pastels) with molten organic Connections using the push-through method.

Da beim Einleimen der nachbehandelten Minen in die üblichen Holzfassungen das Leimwasser von der Mine rasch aufgenommen wird, so war bekanntlich ein verhältnismäßig umständlicher Leim- und. Tro:cken--vorgang erforderlich, der bei niedriger Temperatur vor sich ging und längere Zeit in Anspruch nahm, andernfalls die Minen Tro@kkenri:sse bekamen.As when gluing the post-treated leads into the usual wooden frames the glue water is quickly absorbed by the mine, it was known to be a proportion cumbersome glue and. Drying process required at low temperature went on and took a long time to complete, otherwise the mines Tro @ kkenri: sse got.

Um den Nachteil der Wasseraufnahme durch die Mine beim Einleimen zu vermeiden, hat man schon die Minen in geschmolzenes Fett getaucht oder in dem bekannten Durchstößverfaren mit geschmolzenem Fett überzogen. In letzterem Falle wurden die Minen durch die Fettschmelze; welche gegebenenfalls noch Harz .enthielt, unter Verwendung,eines die Mine umfassenden Abstreifers hindurchgeführt.To the disadvantage of the water absorption by the mine when gluing avoid, one has already dipped the mines in melted fat or in the known Piercing coated with molten fat. In the latter case, the Mines through the fat melt; which possibly still resin .halthalt, using, one the mine comprehensive scraper passed through.

Es hat sich aber gezeigt, daß ein festes Verleimen der gefetteten Mine mit dem Holz nur in beschränktem Umfange möglich ist, da Fett und Leim schlecht aneinanderhaften. Auch wird das Holz durch das Fetten gegebenenfalls in seiner Festigkeit beeinträchtigt.But it has been shown that a firm gluing of the greased Mine with the wood is only possible to a limited extent, since grease and glue are bad stick together. The wood may also lose its strength through greasing impaired.

Gemäß der Erfindung werden die Minen -im Durchstoßverfahren mit schmelzbaren Kunstharzen im Schmelzfluß überzogen, die in Wasser quellbar, aber darin unlöslich sind.According to the invention, the mines -in the push-through process with fusible Synthetic resins coated in the melt flow, which are swellable in water but insoluble in it are.

Der beschränkt wasseraufnahmefähige Überzug ermöglicht nunmehr eine feste Verbindung zwischen Mine und Holzfassung. Zum überziehen der Minen im Sinne der Erfindung können z. B. bekannte Polyvinylester oder Carbamidharze verwendet werden. Das überzugsbad besitzt alsdann eine Tem.-peratur von ioo bis i5o- C.The limited water-absorbing coating now enables a fixed connection between lead and wooden frame. To cover the Mines within the meaning of the invention can, for. B. known polyvinyl esters or carbamide resins be used. The bath cover then has a temperature of 100 to i5o- C.

Beispiel i rberzugsbad = geschmolzenes, niedrigpolymeres Polyvinylacetat. Beispiel z Cberzugsbad = Carbamidharzgießmasse (Kondensationsprodukt aus Harnstoff und Formaldehyd).Example of a coating bath = molten, low-polymer polyvinyl acetate. Example z Coating bath = carbamide resin casting compound (condensation product of urea and formaldehyde).

Bei Verwendung von Acetylcellulos;e sind die üblichen Weichmachungsmittel zugefügt. wie Dimethylphthalat oder Triphenylphosphat.When using acetyl cellulose; e are the usual plasticizers added. such as dimethyl phthalate or triphenyl phosphate.

Die schmelzbaren Kunstharze werden in einer elektrisch -beheizten Durchstoßvorrichtung, wie solche für das Polieren von Schreibstiften bekannt ist, bei einer Temperatur von Zoo bis 170'', gegebenenfalls unter Anwendung von Druck, z. B. i bis z Atm., in den plastischen Zustand übergeführt. Durch diese Masse werden die Minen in rascher Folge hindurchgestoßen und dadurch mit deinem Überzug versehen. Eine Matrize, deren öffnung dem Durchmesser der Mine einschließlich Überzug entspricht, :di'ent als Abstreifer. Nach dem Verlassen der -Vorrichtung erkalten die Minen sehr rasch i-nd sind sofort heimfähig.The fusible synthetic resins are in an electrically heated Piercing device, as is known for polishing pens, at a temperature from zoo to 170 '', if necessary with the application of pressure, z. B. i to z Atm., Transferred to the plastic state. Be through this mass pushed through the mines in quick succession and thereby provided them with your coating. A die, the opening of which corresponds to the diameter of the lead including the coating, : di'ent as a scraper. After leaving the device, the mines get very cold Schnell i-nd are ready to go home immediately.

Derart behandelte Minen sind von einem sehr feinen, zusammenhängenden Film umgeben, der praktisch unempfindlich gegen das Leimwasser ist und eine vollkommene Verleimung zwischen Holz und Mine ermöglicht. Die unvermeidlichen Durchmesserunterschiede der Minen werden weitgehend ausgeglichen.Mines treated in this way are of a very fine, coherent type Surrounded by film, which is practically insensitive to the glue water and a perfect one Allows gluing between wood and lead. The inevitable differences in diameter of the mines are largely balanced.

Claims (1)

PATENTANSYRUCIi: Verfahren zum überziehen von ungebrannten, wasserempfindlichen Schreib-oder Zeich enminen mit schmelzflüssigen organischen Verbindungen im Durchstoßverfahren, dadurch gekennzeichnet, daß schmelzbare Kunstharze, die in Wasser zwar quellbar, :aber hierin unlöslich sind, verwendet würden.PATENTANSYRUCIi: Process for coating unfired, water-sensitive Writing or drawing leads with molten organic compounds in the push-through process, characterized in that fusible synthetic resins which, although swellable in water, : but are insoluble in it, would be used.
DEST58845D 1939-06-27 1939-06-27 Process for coating unfired, water-sensitive writing or drawing leads with molten organic compounds Expired DE713696C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEST58845D DE713696C (en) 1939-06-27 1939-06-27 Process for coating unfired, water-sensitive writing or drawing leads with molten organic compounds
DEST60974D DE729570C (en) 1939-06-27 1941-08-01 Process for coating unfired, water-sensitive writing or drawing leads

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEST58845D DE713696C (en) 1939-06-27 1939-06-27 Process for coating unfired, water-sensitive writing or drawing leads with molten organic compounds
DEST60974D DE729570C (en) 1939-06-27 1941-08-01 Process for coating unfired, water-sensitive writing or drawing leads

Publications (1)

Publication Number Publication Date
DE713696C true DE713696C (en) 1941-11-13

Family

ID=31496657

Family Applications (2)

Application Number Title Priority Date Filing Date
DEST58845D Expired DE713696C (en) 1939-06-27 1939-06-27 Process for coating unfired, water-sensitive writing or drawing leads with molten organic compounds
DEST60974D Expired DE729570C (en) 1939-06-27 1941-08-01 Process for coating unfired, water-sensitive writing or drawing leads

Family Applications After (1)

Application Number Title Priority Date Filing Date
DEST60974D Expired DE729570C (en) 1939-06-27 1941-08-01 Process for coating unfired, water-sensitive writing or drawing leads

Country Status (1)

Country Link
DE (2) DE713696C (en)

Also Published As

Publication number Publication date
DE729570C (en) 1942-12-21

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