Biodegradable absorbent pads and method and apparatus for...

A - Human Necessities – 61 – F

Patent

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Details

A61F 13/15 (2006.01) A61F 13/20 (2006.01)

Patent

CA 2205658

A biodegradable feminine hygienic interlabia pad (12) which includes a biodegradable inner absorbent sliver (13) made of cotton or rayon and a biodegradable outer cover (15, 34) also made of cotton or rayon. The edges (78, 80) of the outer cover (15, 34) are sewn together to form a hollow cylinder. Also disclosed are a method and an apparatus for manufacturing the pads (12). A rope (16) of absorbent material and a web of the outer covering (34) are brought together in a die (26). The die (26) in the form of a hollow tube (50) and a tapered guide (56) which causes the outer covering to enclose the absorbent material (16) with the seam for the outer covering (34) being on the inside of the pad (12). The die (26) includes an opening (66, 76) for exposing the adjacent edges of the web (34) so that the edges (78, 80) may be sewn together. Also adjacent panels (86, 88) are formed by sewing the pad (12) itself.

La présente invention concerne un tampon hygiénique féminin interlabiaire biodégradable (12) qui comporte une couche mince interne, absorbante et biodégradable (13), faite de coton ou de rayonne et une enveloppe externe biodégradable (15, 34) également faite de coton ou de rayonne. Les bordures (78, 80) de l'enveloppe externe (15, 34) sont cousues ensemble de façon à former un cylindre creux. L'invention concerne également un procédé et un appareil de fabrication de ces tampons (12). Un boudin (16) de matière absorbante et un voile constituant l'enveloppe externe (34) sont introduits simultanément dans une filière (26). La filière (26) a la forme d'un tube creux (50) et d'un guide conique (56) ce qui permet à l'enveloppe externe de renfermer le matériau absorbant (16), la couture de l'enveloppe externe étant tournée vers l'intérieur du tampon (12). La filière (26) comporte une ouverture (66, 76) servant è exposer les bordures adjacentes du voile (34) de façon à ce que ces bordures (78, 80) soient cousues ensemble. On peut également fabriquer des pans adjacents (86, 88) en faisant une couture sur le tampon (12) même.

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