| 摘要 |
For sealingly joining an underroof to a skylight or another roof installation a fitting collar is provided comprising a film element (7, 8) with a substantially U-shaped plane configuration with a cutout, at the sides of which there are flange parts (9, 10) for attachment of the fitting collar to mutually adjoined exterior sides (1 through 4) of the main frame structure of the window or the roof installation, in such manner that the film element is brought to extend substantially in parallel with the roof surface, in order to connect with adjacent parts (5, 6) of the underroof. The fitting collar can be manufactured in a simple manner, in that there in two overlapping lengths of film is produced transversal welds, at distances corresponding to a prescribed main frame width, whereby an obliquely extending part of each weld is formed by two parallel welded seams (18, 19), each having an outer part (18a, 19a) extending perpendicular to one of said side edges, through an edge region defining said attachment flange part, and an oblique part (18b, 19b) extending between said edge regions parallel to the oblique part of the other weld seam. Then the fitting collars are separated from said lengths of plastic film material by cutting the welded lengths of plastic film material along cutting lines extending between said weld seams in said oblique parts and said U-shaped plane configuration of each collar by cutting one of said lengths of plastic film material along a cutting line (20) perpendicular to said side edges substantially midway between said welds is formed. In the end and the parts of said cut one length along said oblique parts of the weld seams are folded in order to form the side parts of said U-shaped configuration.
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