| 摘要 |
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.
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