BACKGROUND FABRIC USED FOR AIRBAGS AND METHODS FOR MANUFACTURING THIS FABRIC

Abstract

This invention addresses a problem in conventional weaving methods: insufficient warp tension at the side edges in the width direction leads to a difference in the curl ratio between the center and the side edges of the fabric. This difference in curl ratio causes unevenness in the fabric's width. To solve this problem, the invention uses a supplementary yarn with a lower shrinkage rate in boiling water than the base yarn. This prevents shrinkage at the side edges in the width direction and thus reduces the difference in curl ratio between the center and side edges of the fabric. This allows for the production of highly uniform fabrics for air bags in the width direction.