Method and apparatus for forming tow-based absorbent...

A - Human Necessities – 61 – F

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Details

A61F 13/539 (2006.01) A61L 15/28 (2006.01) A61L 15/60 (2006.01) A61F 13/494 (2006.01)

Patent

CA 2519671

An apparatus and method for forming tow-based absorbent structures having a single casing sheet are disclosed. The apparatus has a tow supply mechanism for providing tow material, a particulate matter supply mechanism for providing particulate matter, and a casing sheet supply mechanism for providing casing sheet material. The apparatus also has a vacuum draw roll having a foraminous center surface that has a width defined by a first edge and a second edge and is rotatable about a first axis. The vacuum draw roll is positioned to receive the tow material, the particulate matter and the casing sheet material to form a open core composite supply. The apparatus also has one or more angled surfaces positioned to create one or more obtuse angles in the open core composite supply, and one or more folders to further fold the one or more obtuse angles in the open core composite supply to form a folded core composite supply.

L'invention concerne un appareil et un procédé permettant de former des structures absorbantes à base d'étoupe ayant une feuille enveloppe simple. L'appareil est doté d'un mécanisme de fourniture d'étoupe qui fournit le matériau d'étoupe, un mécanisme de fourniture de matière particulaire qui fournit une matière particulaire, et un mécanisme de fourniture de feuille enveloppe qui fournit du matériau de feuille enveloppe. L'appareil est également doté d'un rouleau d'aspiration ayant une surface centrale foraminée dont la largeur est définie par un premier bord et un second bord et qui tourne autour d'un premier axe. Le rouleau d'aspiration est placé de manière à recevoir le matériau d'étoupe, la matière particulaire et le matériau de feuille enveloppe pour former une alimentation composite à noyau ouvert. L'appareil a en outre une ou plusieurs surfaces en angle placées de manière à créer un ou plusieurs angles obtus dans l'alimentation composite à noyau ouvert, et une ou plusieurs plieuses pour plier une nouvelle fois lesdits angles obtus dans l'alimentation composite à noyau ouvert de façon à former une alimentation composite à noyau plié.

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