Fire resistant balanced fine corespun yarn and fabric formed thereof

Abstract

This corespun yarn includes a high temperature resistant continuous filament fiberglass core and a low temperature resistant staple fiber sheath surroudning the core. The corespun yarn is useful in the formation of fine textured fire resistant flame barrier fabrics for use as mattress and pillow ticking, bedspreads, mattress covers, draperies, upholstery, protective apparel, tenting, awnings, field fire shelters, for use as a substrate or backing for coated upholstery fabrics and as a flame barrier for use beneath upholstery fabric. The core of high temperature resistant continuous filament fiberglass comprises about 20% to 40% of the total weight of the corespun yarn while the sheath of low temperature resistant staple fibers surrounding and covering the core comprises about 80% to 60% of the total weight of the corespun yarn. The total size of the corespun yarn is within the range of about 43/1 to 3.5/1 conventional cotton count. This corespun yarn may be woven and knit in fine, non-plied form and extneds the range of fineness of fabrics below heretofore achievable limits.

Dependencies are inferred from the claim text.