need a way to splice large bolts of fabric
I am trying to find a method of sewing together rolls of fabric that will be fed though a machine under some tension. It is important that the seam be straight and sturdy, as any shifting or wrinkling will cause problems. I have tried pinning the two ends of the fabric together and running them through my home sewing machine, but this is very cumbersome and will only work with small diameter rolls of fabric due the to limited size of the throat of the machine.
Is there a sewing device that will stitch two layers of fabric without having a bobbin on the underside? I've thought of using fusible webbing/tape but haven't tried it yet, and I'm not sure the resulting splice would hold up under tension. The fabric has to be held taut as it goes thought the machine (lamination process).
TIA for any suggestions that may be helpful.