BAGGING IN TEXTILES

摘要

Bagging is a three-dimensional residual deformation, seen in used garments, which causes a deterioration in the appearance of the garment. The places it is seen during wear are elbows, knees, pockets, hips, and heels. The common factor in all of these parts of garments is the force exerted on that area of the fabric from the moving parts of the body. When the fabric covering that part of the body feels this force for a long time and feels it repeatedly, the fabric deforms and starts to take the form the force is trying to give to it. The force coming from the human body is in the transverse direction to the fabric's plane and the deformation which occurs is spatial. This prolonged and repeated deformation causes the fabric to change its shape, and it usually takes a dome shape, like a part of a sphere, so it is a three-dimensional complex deformation that is very different from the other kinds of deformation seen in textile materials. In the dictionaries, in its simplest meaning, deformation is defined as a change in form. When a deformation has to be studied, factors such as the amount of the deformation, the extreme point of the deformation, the recoverability of the deformation, the residual amount of the deformation, and the mechanism of the deformation should be investigated. This means that parameters such as bagging height, volume, shape, and anisotropy are the main characters of fabric bagging behaviour where no structural breakdown occurs. Since now, these factors have mostly been the main subjects of fundamental engineering experiences. From the engineering point of view, deformation is studied in any kind of material, textiles being our concern. Since all these materials meet human needs in daily life, a wide range of research, from spacework to foods, are all included in the fundamental engineering investigations, and research were done in the past and will continue to be done in the future.