Patent ID: 11879191
Assignee: IFG EXELTO NV
Field: Surface technology, coating (Chemistry)
Classification: CPC B  D  A | IPC B  D

Claim 0:
1. A darkening screen having a hemispherical transmission measured in accordance with the standard WUR-TNO-NEN 2675:2018 of less than 1%, which darkening screen comprises:
a first fabric having a light reflecting first face and an opposite second face, which first fabric comprises in machining direction first strips of film material and first threads in between the first strips, and, in cross machining direction, first yarns by means of which the first strips and the first threads are knitted or woven to one another; and
a second fabric which has a first face and an opposite second face and which is applied with its first face against the second face of the first fabric, which second fabric comprises in machining direction second strips of film material and second threads in between the second strips, and, in cross machining direction, second yarns by means of which the second strips and the second threads are knitted or woven to one another,
wherein said first and said second threads have water transporting capacity,
characterised in that
said first threads are aligned with said second threads and are situated, in a direction perpendicular to said first and second fabric, opposite to said second threads to form pairs of first and second threads, and in that
in a number of said pairs of first and second threads the first thread is connected at different locations by cross-connections to the second thread to thereby fix the first fabric to the second fabric.