Transparent cover element with high thermal insulation

摘要

The present invention concerns a transparent heat-insulating cover element (1), in particular for greenhouse covers, comprising a base body (10) comprising at least two parallel panel-shaped elements (5) being spaced apart from each other and at least one lateral edge profile (18, 18a, 19 19a) forming, in combination with the base body (10), at least one cavity (12) which is essentially sealed against the external atmosphere, wherein the base body (10) is, on at least one of its outer surfaces (9, 11) which is averted from the at least one cavity (12), force-fit joined with, preferably bonded to, a glass layer (14, 16).

主权项

1. Transparent heat-insulating cover element (1), in particular for greenhouse covers, comprising:
a base body (10) comprising at least two parallel panel-shaped elements (5) being spaced apart from each other; and at least one lateral edge profile (18, 18a, 1919a) forming, in combination with the base body (10), at least one cavity (12) which is essentially sealed against the external atmosphere; wherein the base body (10) is, on at least one of its outer surfaces (9, 11) which is averted from the at least one cavity (12), force-fit bonded to a glass layer (14, 16) by means of an adhesive layer (15); characterized in that: at least one of the glass layers (14, 16) comprises a thickness of between 0.1 and 3.2 mm; and a material combination is selected in which the expansion coefficients of the glass layer (14, 16), the adhesive layer (15) and the base body (10) essentially correspond; such that the adhesive layer (15) has a regulating effect between the expansion of the glass layer (14, 16) and the base body (10).