초록 ▼

In a method of making rolls or strips of material having no flaws except joints a supply of material, such as a roll of fabric is inspected for flaws. If any flaws are discovered portions of the material containing the flaws are cut away. The material is attached together after each portion is remov

In a method of making rolls or strips of material having no flaws except joints a supply of material, such as a roll of fabric is inspected for flaws. If any flaws are discovered portions of the material containing the flaws are cut away. The material is attached together after each portion is removed to create a joint for each reattachment. The portions that are cut away are sized so that the joints will be separated by a multiple of a selected distance from one another. The resulting material can then be fabricated into a panel of window covering material in which all the joints are co-linear along a perpendicular to the surface of the material. The joints are positioned so that they will be on a cut line for subsequent processing. In one embodiment the material is wound into a tubular structure that is cut along the joints to form a panel of window covering material.

대표청구항 ▼

[ I claim:] [1.] A method of forming a multi-layered sheet goods product comprising;a. winding at least one elongated strip of material around a support structure in a manner so that each successive winding partially overlaps the immediately preceding winding to a predetermined extent to define an o

[ I claim:] [1.] A method of forming a multi-layered sheet goods product comprising;a. winding at least one elongated strip of material around a support structure in a manner so that each successive winding partially overlaps the immediately preceding winding to a predetermined extent to define an overlap and create a tubular structure;b. bonding each successive winding of material to a preceding winding;c. before winding the at least one elongated strip, inspecting the at least one elongated strip of material for flaws and removing flaws from the at least one elongated strip of material, wherein a process for removing flaws comprises:i. cutting away at least one portion of the material, each portion containing at least one flaw andii. reattaching the at least one strip together after each portion is removed to create a joint for each reattachment, rein the portions that are cut away are sized so that the joints will be aligned so as to form a linear array; andd. cutting the tubular structure along the linear array.