| 摘要 |
The invention relates to a machine for producing tubular articles (T) by helical winding of strips of web material, comprising a spindle ( 4 ) and a winding member ( 7 ) to helically wind the strips (S 1, S 2 ) of web material around the spindle. To improve adhesion between strips pressure is applied to the overlapping turns of strips of web material by an ultrasonic generator ( 33 ).
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