Domed tampon with surfactant-treated cover

A - Human Necessities – 61 – F

Patent

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Details

A61F 13/20 (2006.01)

Patent

CA 2387120

A process for forming tampons having an absorbent structure (12) substantially enclosed by an apertured film cover (22) that has a nonionic surfactant at least partially applied to the cover (22)is disclosed. An absorbent structure (12) is formed into a tampon blank wherein an individual sheet substantially encloses the tampon blank, forming a cover (22). The covered tampon blank is compressed in a press to form a substantially cylindrical, compressed tampon (10) having a cover (22) comprising the individual sheet. The compressed tampon (10) is transferred to a further press, and at least a portion of the tampon (10) covered by the coated sheet portion of the cover (22) is further compressed to form a constricted portion having overlapping portions of the cover (22) being folded upon each other in a substantially unbonded manner. Preferably, the constricted portion is a dome-shaped introduction end (14) of the tampon.

L'invention concerne un procédé de fabrication de tampons présentant une structure absorbante (12) enveloppée sensiblement dans une pellicule de film perforée, qui renferme un tensioactif non ionique, appliqué au moins partiellement à la pellicule (22). Une structure absorbante (12) est formée dans une découpe de tampon (10), laquelle est sensiblement enveloppée d'une feuille individuelle formant une pellicule (22). La découpe de tampon (10) enveloppée est comprimée dans une presse, de manière à former un tampon (10) comprimé, sensiblement cylindrique, qui présente une pellicule (22) enveloppant la feuille individuelle. Le tampon comprimé est transféré à une autre presse, au moyen de laquelle au moins une partie du tampon recouvert de la partie de feuille revêtue de la pellicule (22) est comprimée à nouveau, afin de former une partie étranglée constituée de parties superposées de pellicule (22), pliées les unes sur les autres d'une façon sensiblement non liée. La partie étranglée est de préférence un embout (14) d'accès bombé du tampon.

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