Process for making disposable diapers

Details Process for making disposable diapers Process for making disposable diapers

A - Human Necessities

61

F

A61F 13/49 (2006.01) A61F 13/539 (2006.01)

Patent

CA 2488943

A continuous first web 351 fed in a first machine direction A in which absorbent member 302 of disposable diaper is to be obtained is coated on its outer surface with a hot melt adhesive agent 354, then guided and cut between upper and lower tool rolls 361, 362 to form the individual absorbent members 302. The absorbent member 302 is guided between the lower tool roll 362 and a guide roll 363 so that the adhesive agent 354 may be pressed against a peripheral surface of the guide roll 363 and then fed onto a reorienting roll 364. After having been reoriented on the reorienting roll 364, the absorbent member 302 is bonded to second web 352 fed in a second machine direction B by means of the adhesive agent 354. Preferably, both the upper tool roll 361 and the lower tool roll 362 have diameters smaller than a diameter of the reorienting roll 364.

L'invention concerne un premier voile continu (351) se déplaçant dans un premier sens machine (A) pour obtenir un élément absorbant (302) destiné à une couche jetable. Un agent adhésif thermofusible (354) est appliqué sur la surface extérieure du voile (351), puis le voile est guidé entre un rouleau coupant supérieur (351) et un rouleau coupant inférieur (362), et le voile est coupé, pour former un élément absorbant individuel (302). Une fois l'élément adhésif (354) pressé contre la surface périphérique du rouleau de guidage (363), l'élément absorbant (302) est guidé entre le rouleau coupant inférieur (362) et le rouleau de guidage (363), puis cet élément est transféré sur un rouleau de conversion d'angle (364). Après que l'élément absorbant (302) a changé de direction sur le rouleau de conversion d'angle (364), il est collé à un second voile (352) se déplaçant dans un second sens machine (B), par le biais de l'agent adhésif (354). De préférence, le rouleau coupant supérieur et le rouleau coupant inférieur (361, 362) présentent un diamètre inférieur à celui du rouleau de conversion d'angle (364).

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