SEWING METHOD OF UPHOLSTERY MATERIAL FOR UPHOLSTERY INTEGRAL FOAMING

摘要

PROBLEM TO BE SOLVED: To improve workability of sewing upholstery material in an upholstery material sewing method including steps of joining a plurality of upholstery pieces to form an upholstery material, sewing the upholstery material into a bag, and injecting foaming liquid for forming a pad into the bag to form a pad integrated with the upholstery material.;SOLUTION: Two needle threads 1A, 1B are passed through a sewing needle A to take two needle threads 1A, 1B as a stitch member of a needle hole H of the sewing needle A.;COPYRIGHT: (C)2004,JPO