AT97293B - Process for the production of resilient and waterproof everyday objects from hard cardboard. - Google Patents
Process for the production of resilient and waterproof everyday objects from hard cardboard.Info
- Publication number
- AT97293B AT97293B AT97293DA AT97293B AT 97293 B AT97293 B AT 97293B AT 97293D A AT97293D A AT 97293DA AT 97293 B AT97293 B AT 97293B
- Authority
- AT
- Austria
- Prior art keywords
- waterproof
- resilient
- production
- hard cardboard
- everyday objects
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 6
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 230000003203 everyday effect Effects 0.000 title description 2
- 229920002678 cellulose Polymers 0.000 description 7
- 239000004922 lacquer Substances 0.000 description 7
- 239000001913 cellulose Substances 0.000 description 6
- 238000005507 spraying Methods 0.000 description 5
- 238000007598 dipping method Methods 0.000 description 3
- 239000002966 varnish Substances 0.000 description 3
- 241000309229 Bactris guineensis Species 0.000 description 2
- SMEGJBVQLJJKKX-HOTMZDKISA-N [(2R,3S,4S,5R,6R)-5-acetyloxy-3,4,6-trihydroxyoxan-2-yl]methyl acetate Chemical compound CC(=O)OC[C@@H]1[C@H]([C@@H]([C@H]([C@@H](O1)O)OC(=O)C)O)O SMEGJBVQLJJKKX-HOTMZDKISA-N 0.000 description 2
- 229940081735 acetylcellulose Drugs 0.000 description 2
- 229920002301 cellulose acetate Polymers 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 229920002160 Celluloid Polymers 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 229920003086 cellulose ether Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung widerstandsfähiger und wasserfester Gebrauchsgegenstände aus Hartpappe.
EMI1.1
Horn, Schildpatt, Steinnuss oder solchen aus massiven Kunstmassen, wie Zelluloid, Bakelit usw. im Aussehen und in der Widerstandsfähigkeit gegen Wasser oder mechanische Beanspruchung gleichkommen, erhält, wenn man in der nachstehenden Weise imprägnierte Hartpappe durch Tauchen, Spritzen oder Pinselauftrag mit Lacken aus Zellulosederivaten überzieht.
Zur Herstellung der Hartpappe für den beanspruchten Zweck verfährt man so, dass man feinst gemahlene Zellulose unter schwachem Druck zu Tafeln walzt, aus diesen Tafeln die herzustellenden Gegenstände stanzt und diese in einer Formpresse unter schwachem Druck formt. Diese rohen Pappformen werden mit einem der nachstehend beschriebenen Lacke durch Tauchen oder Spritzen derart behandelt, dass lediglich eine dünne Aussenschicht der Zellulosefasern sieh mit dem Zelluloseester verbindet. Darauf werden gemäss der Erfindung die so erhältlichen Formen in einer heizbaren Formpresse heiss unter starkem Druck nachgepresst. Auf diese Weise wird eine innige Verbindung von Lackmasse und der durchlässigen Unterlage erzielt.
Bringt man hingegen in bekannter Weise auf eine bereits stark gepresste Hartpappeform Zelluloselaeke auf, so erreicht man nur eine geringe Haftfestigkeit der Lackschicht auf der Pappe, während bei dem neuen Verfahren Lackschicht und Pappe ausserordentlich fest miteinander verbunden sind.
Auf diese Lacksehicht bringt man zweckmässig durch Tauchen oder Spritzen, die gegebenenfalls
EMI1.2
auf. Zur Herstellung gemusterter Gegenstände bedient man sich des Spritzverfahrens unter Anwendung von Schablonen. Diese farbige Schicht wird nach dem Trocknen mit einem Überzug von farblose Zelluloselack und durch ein-oder mehrmaliges Überziehen mittels der üblichen Spritzvorriehtungen versehen.
Besonders hohe Glanzwirkung und Widerstandsfähigkeit werden erreicht, wenn die in vorstehend beschriebener Weise lackierten Gegenstände in einer Presse heiss nachgepresst oder poliert werden. Die auf diese Weise erhaltenen Gegenstände sind im Aussehen und ihren Eigenschaften solchen aus Steinnuss oder Horn gleich. Es ist auch angängig, einerseits für die farbigen Grundierungen, anderseits für den Decldack verschiedene Zellulosederivate anzuwenden, z. B. einen Nitrozelluloselack ffir die Grundierung und als farblosen Decklack einen Acetylzelluloselack. Auch Zelluloseäther, besonders in Verbindung mit Harzen können mit Vorteil für diese Zwecke verwendet werden.
Beispiel : Auf eine Knopfform von Zellulose, die in vorstehend beschriebener Weise hergestellt wird, trägt man durch Spritzen eine etwa 5%ige Acetylzelluloselösung auf, wobei der Lack teilweise in die durchlässige Form eindringt. Hierauf wird der Knopf nach dem Trocknen heiss in einer heizbaren
EMI1.3
heizbaren Polierpresse naehgepresst.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the production of resilient and waterproof everyday objects from hard cardboard.
EMI1.1
Horn, tortoiseshell, corozo or those made of solid synthetic materials such as celluloid, bakelite, etc. are equivalent in appearance and resistance to water or mechanical stress, if one impregnated hard cardboard in the following way by dipping, spraying or brush application with varnishes made of cellulose derivatives covers.
To produce the hard cardboard for the claimed purpose, the procedure is that finely ground cellulose is rolled under low pressure to form sheets, the objects to be produced are punched from these sheets and these are formed in a molding press under low pressure. These raw cardboard forms are treated with one of the varnishes described below by dipping or spraying in such a way that only a thin outer layer of the cellulose fibers connects with the cellulose ester. According to the invention, the molds obtainable in this way are then re-pressed while hot under high pressure in a heatable molding press. In this way, an intimate connection between the lacquer compound and the permeable substrate is achieved.
If, on the other hand, a cellulose sheet is applied in a known manner to an already strongly pressed hard cardboard form, only a low adhesive strength of the lacquer layer on the cardboard is achieved, whereas in the new process the lacquer layer and cardboard are extremely firmly bonded to one another.
This lacquer layer is expediently applied by dipping or spraying, if necessary
EMI1.2
on. The spraying process using stencils is used to produce patterned objects. After drying, this colored layer is provided with a coating of colorless cellulose varnish and by being coated one or more times using the usual spray devices.
A particularly high gloss effect and resistance are achieved if the objects coated in the manner described above are re-pressed or polished in a hot press. The objects obtained in this way are similar in appearance and properties to those made of corozo or horn. It is also common to use different cellulose derivatives on the one hand for the colored primers and on the other hand for the Decldack, e.g. B. a nitrocellulose lacquer for the primer and an acetyl cellulose lacquer as a colorless topcoat. Cellulose ethers, especially in connection with resins, can also be used to advantage for these purposes.
Example: An approximately 5% acetyl cellulose solution is applied by spraying to a button form of cellulose which is produced in the manner described above, the lacquer partially penetrating into the permeable form. Then the button is hot in a heatable after drying
EMI1.3
heatable polishing press.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT97293T | 1922-09-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT97293B true AT97293B (en) | 1924-06-25 |
Family
ID=3616742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT97293D AT97293B (en) | 1922-09-05 | 1922-09-05 | Process for the production of resilient and waterproof everyday objects from hard cardboard. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT97293B (en) |
-
1922
- 1922-09-05 AT AT97293D patent/AT97293B/en active
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