| 摘要 |
A method for manufacturing a perforated laminated or nonwoven fabric, comprising the steps of: preheating the laminated or nonwoven fabric to such a temperature as to allow softening without deformations or melting of the nonwoven fabric; forming a plurality of three-dimensional open craters within the laminated or nonwoven fabric, by deforming the laminated or nonwoven fabric, without breaking fibers or filaments of the nonwoven fabric; cooling the laminated or nonwoven fabric so as to maintain the deformation of fibers or filaments in order to define permanently the open three-dimensional craters.
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