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WALTER ROTHERMUNDT TECHN GROSS
Original Assignee
WALTER ROTHERMUNDT TECHN GROSS
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 WALTER ROTHERMUNDT TECHN GROSSfiledCriticalWALTER ROTHERMUNDT TECHN GROSS
Priority to DE1957R0014827priorityCriticalpatent/DE1754206U/en
Publication of DE1754206UpublicationCriticalpatent/DE1754206U/en
Manufacture Of Macromolecular Shaped Articles
(AREA)
Description
Beschreibunß :Sie ie Vaktiudiverformung von glasfaserverstärkten Polyesterharzenmacht den Einsatz einer Polie erforderlich. Diese Folie hat
denZweck, das &u verformende Teil luftdicht äbauschließen.
Alsdannmuß sie sich bei der Vakuumerzeugung infolge ihrer Elastizitätdem herzustellenden Teil fest anschmiegen, um. so die Kalthärtungdes Fertigteiles herbeizuführen. Bei dieses Vorgang ist die
Foliezusätzlich noch einer starken chemischen Beanspruchung ausgesetzt.Die bisher angewandten Folien, meistens aus Kunststoff, sind
dieserBeanspruchung, nur sehr bedingt gerecht geworden und waren
nachkurzer Zeit schon nicht mehr einsatzfãhig.Der wesentliche Fortschritt meiner Gummi-Folie liegt darin,
daßtrotz der hohen mechanischen, thermischen und chemischen Beanspru-chung eine gleichbleibende Elastizität bei guten Verformungseigen-schaften erreicht wirdlDurch die chemische Beständigkeit der
Folieerreicht diese eTielfaches an Lebensdauer gegenüber den sonsteingesetztenPollen.Schutzanspruch :EineCummi-Polie dadurch geken=eichnet, daß sie eine bleibeadeElastizität ; gute Lösungsmittelbeständigkeit-im vorliegendenFalle spezielle Btyr. olbeständigkeit-und gute Verformungseigen-schaften aufweist. Infolge dieser Eigenschaften ist die Gummi-Foliebesonders für die Vakuum-Verformung von glasfaserverstärktenPolyesterharzen in der Kalthärtung geeignet. Description : You ie the vacuum deformation of glass fiber reinforced polyester resins requires the use of a policy. This slide has it Purpose to seal the &u deforming part airtight. then due to its elasticity, it has to move when generating a vacuum cling tightly to the part to be manufactured in order to. so the cold hardening of the finished part. In this process, the foil additionally exposed to strong chemical stress. The foils used so far, mostly made of plastic, are this one Stress, only very conditionally met and were after not operational for a short time. The main advance of my rubber film is that despite the high mechanical, thermal and chemical stresses constant elasticity with good deformation properties properties is achieved through the chemical resistance of the film achieves this much longer service life than the usual ones used pollen. Claim for protection : A cummi policy is characterized by the fact that it remains a beach elasticity ; good solvent resistance-in the present Trap special Btyr. oil resistance and good deformation properties properties. As a result of these properties is the rubber sheet especially for the vacuum forming of glass fiber reinforced Polyester resins suitable for cold curing.
Barrier layer photocell, in particular copper oxide cell, with a transparent protective layer made of lacquer or the like applied to the transparent electrode.
Process for the production of alcohol-soluble polyesters with terminal 4,4-bis (hydroxyaryl) pentanoic acid units and their use as color carriers in printing inks