Method for manufacturing tape tab stock that may be used to...

A - Human Necessities – 61 – F

Patent

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Details

A61F 13/60 (2006.01) A61F 13/02 (2006.01) A61F 13/15 (2006.01) B31D 1/00 (2006.01)

Patent

CA 2192323

A method for manufacturing tape tab stock that may be used to produce tape tabs (40) for use with disposable absorbent articles, as well as a method for manufacturing tape tab stock that can be produced on-line and concurrently with the disposable absorbent article to which the tape tabs (40) are joined. The first step in the process is to provide a backing substrate (52) upon which the adhesives of the tape tab can be applied. Once the backing is provided, a pressure sensitive adhesive (54) is applied to regions of one side of the backing substrate. The backing substrate (52) is then slit in a direction parallel to the machine direction and the release surface of a release substrate is placed in contact with the pressure sensitive adhesive (54), forming a laminate comprising the backing substrate (52) and the release substrate. The release substrate preferably covers the entire surface of the backing substrate (52) upon which pressure sensitive adhesive (54) has been applied. The surface of the laminate, including the surface of the release substrate that is not in contact with the pressure sensitive adhesive (54), and any of the backing substrate (52) not covered by the release substrate is then coated with a second adhesive for joining the tape tabs to the absorbent article. After the second adhesive is applied to the surface of the laminate, the laminate is slit in a direction parallel to the machine direction and either rewound for shipping or storage, or fed to a taper unit that is integrated into the absorbent article manufacturing line. The taper unit cuts individual tape tabs (40) and applies them to the absorbent article chassis.

Méthode de fabrication de stock de ruban pouvant être utilisé pour produire des pattes (40) pour articles absorbants jetables, et méthode de fabrication de stock de ruban pouvant être produit en continu et en même temps que l'article absorbant jetable auquel les pattes (40) sont fixées. La première étape du procédé consiste à fabriquer un substrat (52) faisant office de support sur lequel on puisse appliquer les adhésifs de la patte. Un adhésif autocollant (54) est ensuite appliqué à certaines parties d'un côté du substrat. Celui-ci (52) est ensuite découpé dans un sens parallèle au sens d'avancement de la machine et la surface amovible d'un substrat amovible est mise en contact avec l'adhésif autocollant (54), ce qui forme une feuille comprenant le substrat (52) et le substrat amovible. Le substrat amovible recouvre de préférence toute la surface du substrat (52) sur lequel l'adhésif autocollant (54) est à appliquer. La surface de la feuille, qui comprend la surface du substrat amovible qui n'est pas en contact avec l'adhésif autocollant (54), et tout substrat (52) non recouvert par le substrat amovible, est alors revêtue d'un second adhésif destiné à fixer les pattes à l'article absorbant. Après application du second adhésif à la surface de la feuille, celle-ci est découpée en un sens parallèle à celui d'avancement de la machine et rembobinée pour être expédiée ou stockée, ou amenée à une unité d'alimentation en ruban qui est intégrée à la chaîne de fabrication de l'article absorbant. L'unité d'alimentation en ruban découpe des pattes (40) et les fixe sur le support de l'article absorbant.

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