| 摘要 |
<p>The invention relates to a method for continuously producing a flexible elastic web material having two outer material webs or layers (20, 32), of which at least one is made of a textile material, and between which a pretensioned elastic intermediate ply is inserted that, when relieved from tension, causes the web material to shorten, and when tension is exerted thereupon, enables the web material to be elastically lengthened again. In order to produce the web material, the first material web or layer (20) is shaped to form a tube, and a contact adhesive (24) is applied thereto. Afterwards, a pattern (26, 28) of elastic threads or stands are, while pretensioned, progressively placed onto the outer side of this tube in a continuous manner in the longitudinal direction of the tube. A second material web or layer (13) is then placed onto the first tubular material web or layer provided with the pretensioned elastic threads, and is progressively joined in an adhering manner to the first material web or layer. The tube obtained hereby that is comprised of two material webs or layers with the embedded pattern consisting of pretensioned elastic threads or strands is then cut up in the longitudinal direction and unfolded in order to obtain the desired surface-elastic web material.</p> |
