These pair of small pleated shade covers were shredding. I removed the trim, liner then cover. The covers were splitting along the pleats. When I took a real close look, I believe they were paper, not actual material. I could tear them vertically along the pleats and horizontally, just like paper.
The new cover is a sheer fabric that I sent to a pleating company to pleat. The pleated material comes back with pleated paper on both sides of the material. The paper is to protect the material during the pleating process. I believe these manufactured shades were covered with this pleating paper.
These fabric shades have three layers and all layers are hand sewn. The new pleated fabric is very sheer so I first covered the frame with a fitted cover and then used the sheer pleated fabric. The liner is applied last on a shade.
Even though these shades are small, there is a lot of time and costly materials involved in restoring pleated shades.