doppelwandige

Doppelwandige is a German adjective meaning double-walled. It is the inflected form of doppelwandig used before feminine singular nouns in the nominative or accusative case, and in other inflected forms for different genders and numbers. The term combines doppel- (double) and Wand (wall) with the -ig suffix that forms adjectives in German.

In German, doppelwandige describes objects with two walls separated by a space, typically to improve insulation or strength. Common examples include a doppelwandige Thermoskanne (a double-walled thermos), doppelwandige Gläser (double-walled glasses) that prevent condensation, and doppelwandige Fassaden or Doppelhüllen in architecture (double-skin facades). The phrase is often used in product descriptions, architectural discussions, and technical specifications.

Construction and function often involve an inner and outer wall with an air or vacuum gap between them. Materials frequently include stainless steel, glass, or specialized ceramics. Benefits of doppelwandige designs include reduced heat transfer, better temperature retention, lower condensation on the outer surface, and enhanced durability. They can also add weight and cost, and require precise sealing and joining of the walls to maintain insulation and integrity.

Doppelwandig designs are common in consumer goods such as insulated drinkware, as well as in architectural systems and laboratory equipment. The term emphasizes the two-wall configuration rather than the specific insulation method, which can be vacuum, inert gas, or simply air-filled depending on the application.