Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Patent
1994-04-14
1995-03-28
Kruter, Jerome L.
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
604383, H61F 1320
Patent
active
054012686
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to the field of hygiene and more particularly to that of feminine hygiene.
A particular subject of the invention is moveable fastening tabs or wings placed on the outer surface of sanitary towels and arranged asymmetrically along the longitudinal edge of the sanitary towel.
In fact, it is known from European Patent Application 0,134,086 (PROCTER & GAMBLE), from European Patent Application 0,267,059 (BEGHIN-SAY) or also from International Patent Application WO 89/02729 that it is possible to provide, during the cutting of the outer lining of sanitary towels, lateral flaps of semi-circular or quadratic shape designed so as to form after use, by folding around the sanitary towel, itself folded, a disposable sealed package. According to European Patent Application 0,267,059, the presence of lateral wings or flaps in the area of the biconcave zone of the inner surface of the sanitary towel provides, in addition, improved lateral impermeability as well as excellent comfort.
In this Patent Application, the lateral wings or flaps contain, in addition, one or more layers, joined together, improving the lateral impermeability. The fixing of these wings is provided by the cutting method because they are an integral part of the towel.
It was however desirable to find a fastening device which provides a surface for fixing on the under-garment which is larger than that presented by the current devices with lateral flaps and at the same time, which guarantees surface eveness and therefore lateral impermeability without having recourse to complex industrial methods.
The example with asymmetrical wings defined in French Patent Application 92.10052 in the name of the Applicant already provides an initial solution.
The purpose of the device according to the invention is to obtain this desired new result.
SUMMARY OF THE INVENTION
It is characterized in that the lateral flaps are incorporated in the gauze and in the impermeable part.
The lateral flaps according to the invention have a triangular surface projecting over the median axis of the outer part of the sanitary towel which may contain, on its base, a semi-circular indentation.
The two lateral flaps are arranged head-to-tail on the towel, so as to provide an adhesion surface which is as large as possible.
Before use, the flaps are lateral and are folded under the adhesive surface or surfaces of the single-sided siliconized paper, placed on the inner surface, which permits the subsequent transfer of the adhesive surfaces onto the lateral flaps at the time of use.
The invention also includes a process for the production of sanitary products provided with these lateral flaps which consists of confining the absorbent pad made of cellulose pulp or of a sanitary towel composite, between a film of polyethylene and a layer of non-woven fabric or a film of micro-perforated polyethylene which is impermeable, towards the outside, to liquids, of sealing the two layers by joining or sizing, of cutting, along the strip, the material formed previously, constituted by the pad and the two protective layers of impermeable film, thus forming a wavy ribbon in the form of a garland, of placing this garland on a single-sided siliconized paper the inner side of which has been coated beforehand in a continuous or discontinuous manner with a glue. A second single-sided siliconized paper, the inner side of which has been coated beforehand with one or more blocks of glue, is placed on the lateral flaps which have been folded beforehand over the inner surface.
According to one particular example of the invention, the sealing of the polyethylene film is carried out by heat-sealing or by sizing.
In the latter case, an elastic cylindrical membrane maintained under pressure ensures contact between the two layers of film with a view to sealing.
The cutting out of the lateral flaps is carried out in a synchronous fashion and at the same time as the positioning of the absorbent pads.
The positioning of the single-sided siliconized paper is carr
REFERENCES:
patent: 4500316 (1985-02-01), Damico
patent: 4781712 (1988-11-01), Barabino et al.
patent: 4950264 (1990-08-01), Osborn, III
patent: 5201727 (1993-04-01), Nakanishi et al.
Kruter Jerome L.
Prest'Hyg S.A.
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