| 摘要 |
<p>THE INVENTION RELATES TO A METHOD FOR MANUFACTURING A LAMINATED STRUCTURE (22) FOR USE IN AN ABSORBENT ARTICLE SUCH AS A DIAPER, A SANITARY NAPKIN, A PANTY LINER, AN INCONTINENCE PAD OR SIMILAR AND BEING DEFINED BY A PLURALITY OF MATERIAL LAYERS (6, 7, 8) COMPRISING AT LEAST A FIRST LAYER (6) WHICH IS LIQUID- PERMEABLE, A SECOND LAYER (7) CONSTITUTING AN ABSORBENT CORE (7) AND A THIRD LAYER (8), EACH OF SAID LAYERS (6, 7, 8) BEING FORMED OF A MATERIAL HAVING A CERTAIN PORE RADIUS (RI, R2, R3), SAID METHOD COMPRISING: BONDING TOGETHER SAID MATERIAL LAYERS (6, 7, 8) BY MEANS OF AT LEAST TWO ULTRASONIC WELDING STEPS (4; 12); AND PROVIDING AN ULTRASONIC WELDING PATTERN (15; 17) FOR EACH OF SAID WELDING STEPS, EACH OF SAID WELDING PATTERNS (15; 17) BEING DEFINED BY A PLURALITY OF BONDING SITES (16; 18). THE METHOD ACCORDING TO THE INVENTION COMPRISES PROVIDING SAID WELDING STEPS (4; 11) FOR FORMING GENERALLY THE ENTIRE ABSORBENT ARTICLE; AND SELECTING SAID WELDING PATTERNS (15; 17) IN A MANNER SO THAT AT LEAST THE ENTIRE LAMINATED STRUCTURE (22) HAS A MULTIPLE PORE RADIUS.</p> |
