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Priority to DE19742463163priorityCriticalpatent/DE2463163A1/en
Publication of DE2463163A1publicationCriticalpatent/DE2463163A1/en
The frame consists of hollow sections joined together and filled with a material containing a vaporizable liquid. Between the hollow sections and the door-panels placed on them are sealed air-pockets which are interconnected by means of holes in the hollow sections by the material combining with the liquid. The door panels consists of a box-structure with insulation material inserted. The hollow sections combine to form a rectangular frame of about the same size of the door panel. Between the top and bottom horizontal hollow sections of the rectangular frame are vertical hollow struts spaced apart. The material combining with the liquid inside the hollow sections is pref. water bonded gypsum. The frame is preferably sheet steel, with plastic as the insulating material.
DE197424631631974-07-021974-07-02Fire-resistant sliding-door - includes sectional door-panel and heat-resistant insulating material inside
PendingDE2463163A1
(en)
Insulated prefabricated concrete structural wall panels - used for contg. lateral thrust beside e.g. swimming pools, comprises vertically stable concrete frame with transverse base rods