DE641667C - Process for making foils or shaped bodies made of cellulose acetate and similar materials heat-resistant - Google Patents
Process for making foils or shaped bodies made of cellulose acetate and similar materials heat-resistantInfo
- Publication number
- DE641667C DE641667C DEE37452D DEE0037452D DE641667C DE 641667 C DE641667 C DE 641667C DE E37452 D DEE37452 D DE E37452D DE E0037452 D DEE0037452 D DE E0037452D DE 641667 C DE641667 C DE 641667C
- Authority
- DE
- Germany
- Prior art keywords
- cellulose acetate
- resistant
- bodies made
- shaped bodies
- similar materials
- 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
Landscapes
- Laminated Bodies (AREA)
Description
Verfahren zum Wärmebeständigmachen von Folien oder geformten Körpern aus Celluloseacetat und gleichartigen Stoffen Die Erfindung betrifft- ein Verfahren zum Wärmebeständigmachen von Folien oder geformten Körpern aus Gelluloseaoetat und gleichartigen Stoffen, z. B. von farbigen Mänteln für Glühlampen. Es zeigte sich, daß derartige Gegenstände unter der Hitzewirkung ihre Form verändern. Der Erfindung gemäß wird nun eine nachträgliche Formänderung dadurch verhütet, daß die Körper nach der Formgebung und der Trocknung auf oder in einer Formänderungen hindernden Form einer stärkeren Erwärmung, vorzugsweise auf 7o bis 150° C, ausgesetzt werden. Je größer die benutzte Wärme ist, um so kürzer ist die Behandlungszeit. Bei Anwendung einer Erhitzung auf ioo° zeigte sich z. B. eine Behandlungsdauer von .etwa 5 Minuten vorteilhaft, bei Anwendung einer Erhitzung auf 7o° dagegen eine Behandlungsdauer von etwa 15 Minuten.Process for making films or shaped bodies heat resistant made of cellulose acetate and similar substances The invention relates to a method for making films or molded bodies made of gelulose acetate and similar substances, e.g. B. of colored coats for incandescent lamps. It was found, that such objects change their shape under the action of heat. The invention according to a subsequent change in shape is now prevented by the fact that the body after shaping and drying on or in a shape which prevents changes in shape Form a stronger heating, preferably to 7o to 150 ° C, are exposed. The greater the heat used, the shorter the treatment time. When applied heating to 100 ° showed z. B. a treatment time of .about 5 minutes advantageous, when using heating to 70 °, on the other hand, a treatment duration of about 15 minutes.
Nach einer derartigen Behandlung können die Gegenstände, ohne daß die Gefahr einer nachträglichen Formänderung eintritt, recht starken Erwärmungen ausgesetzt werden.After such a treatment, the objects can without the risk of a subsequent change in shape occurs, very strong heating get abandoned.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEE37452D DE641667C (en) | 1928-05-24 | 1928-05-24 | Process for making foils or shaped bodies made of cellulose acetate and similar materials heat-resistant |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEE37452D DE641667C (en) | 1928-05-24 | 1928-05-24 | Process for making foils or shaped bodies made of cellulose acetate and similar materials heat-resistant |
Publications (1)
Publication Number | Publication Date |
---|---|
DE641667C true DE641667C (en) | 1937-02-09 |
Family
ID=7078101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEE37452D Expired DE641667C (en) | 1928-05-24 | 1928-05-24 | Process for making foils or shaped bodies made of cellulose acetate and similar materials heat-resistant |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE641667C (en) |
-
1928
- 1928-05-24 DE DEE37452D patent/DE641667C/en not_active Expired
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