Fabric As A Roller Curtain Blind
The object of the invention is to provide a fabric which incorporates transverse
strips or bands which define pockets for the housing of rods associated with a roller blind, and which also incorporates a lower hem for a lower flat bar and an upper hooked and/or looped strip for the attachment of the roller blind on a tiedown support and carrier of the corresponding mechanisms of the roller blind. All of the elements i.e. the bands for the housing of the rods, the lower hem for the housing of the flat bar and the upper attachment strip of the roller blind, are integrally formed during a single weaving process of the fabric eyelets which accommodate the passage of the rolling/unrolling threads of the roller blind are also fabricated in the same weaving process, as well as the openings in the bands which allow the introduction of the rods.
The complexity of the production of the known roller blind results from a sheet fabric on which a plurality of strips must be transversely, e.g. horizontally, attached, typically at regular intervals, and which must be sewn through their longitudinal edges to the fabric, such as on the rear face of the same, in order to define a receptacle for the transverse rods between the strip and the fabric on which it is sewn, which the roller blinds incorporate at generally regular intervals.
The complexity of the production of the known roller blind results from a sheet fabric on which a plurality of strips must be transversely, e.g. horizontally, attached, typically at regular intervals, and which must be sewn through their longitudinal edges to the fabric, such as on the rear face of the same, in order to define a receptacle for the transverse rods between the strip and the fabric on which it is sewn, which the roller blinds incorporate at generally regular intervals.
The manufacture of the roller blinds according to the improvements of the invention, permit the production of a roller blind in a simple and rapid manner, with an optimum finish, since both the housing strips for the rods and the lower hem for the flat bar and the upper attachment strip of the roller blind, and even the eyelets for the rolling/unrolling threads of the roller blind, are obtained during a single weaving of the fabric, i.e., they are integrally woven with the fabric itself, and do not constitute additional elements or items, as is found in known construction of roller blinds.
Housing strips for the rods, which are obtained during the actual weaving stage of the fabric, are determined by two plies, forming bands in continuity with the actual fabric, between which plies is defined a pocket for the rod, with the particularity that in proximity to the ends, one of said plies, specifically the one considered as rear, is provided with an opening through which the end of the rod may be introduced, transversely into the pocket between the two plies of the band or strip.
Moreover, during the weaving of said transversal bands, and indeed the fabric in general, two cords are woven on the rear ply but which, at regular intervals or at suitable distances, present small sections not woven with the ply, i.e. the cords are spaced apart from the rear ply to form eyelets for the passage of the threads for rolling/unrolling the roller blind.
Another novel characteristic presented by the fabric of the invention is a lower hem which is similarly obtained during the actual process of weaving of the fabric, since similarly to the bands or strips for housing the rods, said lower hem also forms a woven band, of greater width, to receive the corresponding flat bar used as weight in the roller blinds.
Since the bands or strips, hems and small cords of hook and/or loop threads are woven, no seams, roughness nor small bends exist which are normally caused by the seams of a conventional fabric, so that the roller blind, in its unrolling, remains perfectly smooth, and on which the bands or strips may be of the same color or of different color to the fabric, or may be a combination of colors, etc., though always forming a totally smooth surface without the least, minimum wrinkle, and, what is more important, with a perfect positioning of the bands or strips, with which the rods always remain parallel to each other as well as the lower flat bar, thus allowing the attainment of a roller blind having an improved finish.
Another advantage consists in the production time saving as compared to conventional roller blind, since the fabric which forms the shade of the roller blind comes out practically from the loom, leaving only the introduction of the rods, and forming the hems of the sides.
by: erin
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