Abstract: An air-bag comprises two super-imposed layers of fabric (2,3). A folding thread (10,11) is provided having one end thereof securely fastened to the fabric forming the bag in a region defined by a seam (4), each thread being connected loosely alternately to each of the layers of fabric. The thread (10,11) has a portion accessible from the exterior of the bag. If that portion of the thread is pulled, the region where the thread is securely fastened to the fabric of the bag is drawn towards the region where the thread is being pulled, thus folding that part of the bag between these two points with a concertina-fold.

Abstract: A method of forming an air bag which includes the steps of weaving on a loom an upper and lower fabric simultaneously, the two fabrics being combined in selected areas to define a seam of substantially circular shape. A bag is produced by cutting within the seam. The bag does not have an additional coating, but the permeability of the bag is determined by controlling the sett thereby utilizing the permeability of the weave itself.

Abstract: A method of forming an air bag which includes the steps of weaving on a loom an upper and lower fabric simultaneously, the two fabrics being combined in selected areas to define a seam of substantially circular shape. A bag is produced by cutting within the seam. The air bag does not have an additional coating, but the permeability of the bag is determined by controlling the sett thereby utilizing the permeability of the weave itself.

Abstract: An inflatable airbag comprises a front part (20) and a rear part (22), or front, rear and side parts joined together by at least one tear seam (24) comprising stitching of tortuous pattern.