Nonwoven fabric contains bonding strips of thermal bonding materials to form layers in the nonwoven to be broken down through the thickness by the needle bonding action for a combined mechanical and thermal bonding

摘要

To produce mechanically-bonded nonwoven fabric, in addition fibers are scattered through the cross section of the nonwoven for an additional heat bonding action. Fiber web (1) covered with a bonding strip (2) is laid to and fro across the whole nonwoven width, at 90 deg to the web formation line. The bonding strip forms a flat bonding layer (5) in the cross section of the nonwoven (4) being produced. To produce a mechanically-bonded nonwoven fabric, in addition fibers are scattered through the cross section of the nonwoven for an additional heat bonding action. A fiber web (1) covered with a bonding strip (2) is laid to and fro across the whole nonwoven width, in folds at 90 deg to the web formation line. The width of the bonding strip (2) is at least 1 cm larger than the withdrawn length of a web fold, so that the bonding strip (2) forms a flat bonding layer (5) in the cross section of the nonwoven (4) being produced. During the mechanical bonding, fiber bonds hold the material together.