Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Patent
1998-02-02
2000-03-21
Weiss, John G.
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
604358, 604365, 6043851, 604386, 604387, 604389, A61F 1315
Patent
active
060397179
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a fastening device for fastening onto textile or textile-like material surfaces, comprising a self-adhesive, pressure sensitive layer with a first surface intended to be firmly joined to a substrate, and a second surface intended to serve as a surface which fastens onto the textile or textile-like material surface.
The invention also concerns an absorbent article such as a sanitary napkin, an incontinence guard, a seat cover or a bed protector comprising such a fastening device.
A diaper in accordance with the invention comprises a first liquid-permeable casing layer, a second liquid impermeable casing layer, which layers are mutually joined around an absorption body enclosed between the casing layers, and which has a front part, a rear part, and a narrow crotch part arranged between these two parts, and two longitudinal side edges, a front waist edge and a rear waist edge, which are shaped to together encircle the user's waist and thereby form the diaper's waist opening. The diaper further comprises fastening tabs, which are arranged on the longitudinal side edges, near the rear waist edge, and are intended to fasten onto the front part for fastening the diaper together to a pants-like shape.
BACKGROUND OF THE INVENTION
The most common way to fasten a sanitary napkin inside a pair of underpants during use has up to now been to arrange a fastening surface in the form of pressure-sensitive adhesive on the side of the napkin which during use is intended to be in contact with the underpants of the user. In order to avoid adhesion problems with the adhesive surface during storage and transport of the napkins, the fastening adhesive is usually protected with a special removeable strip of material made of release agent treated paper, or similar. When the napkin is to be used, the protective strip is removed, so that the adhesive is exposed and can be used for fastening of the napkin in the underpants of the user. The protective strip does not have any further function, but is thrown away after it has been released from the fastening adhesive. The use of such protective strips has a number of disadvantages. For example, it is awkward to handle the protective strips when the sanitary napkin is to be used, especially if the sanitary napkin is provided with several different protective strips which have to be removed. Furthermore, the use of protective strips results in the use of unnecessarily large amounts of material, which is a disadvantage from an environmental and energy point of view, as well as with respect to costs.
In order to eliminate the special protective strips, it is known to provide a sanitary napkin with adhesive regions as well as release agent treated regions arranged in such a way that the sanitary napkin can be folded together with the adhesive regions in contact with and protected by the release agent treated regions. Such sanitary napkins are described in U.S. Pat. No. 4,376,440, EP 471,384, EP 471,385, EP 471,386 and EP 471,387.
Such an arrangement brings about a reduction in material consumption as well as certain simplifications in handling the sanitary napkin. A principal problem and a big disadvantage with it is, however, that the possibility of applying the fastening adhesive in the way which gives the best anchoring of the sanitary napkin inside the user's underpants, is greatly limited, since the placing of the adhesive surface primarily must be chosen so that the adhesive surface after folding together of the sanitary napkin lies in contact with the corresponding release agent treated area.
From EP 393,953 a pressure sensitive adhesive fastening device is known, which comprises a carrier of which one side is equipped with a pressure sensitive adhesive, arranged in the spaces between a series of pegs or projections, projecting out from the carrier, wherein the pegs or projections extend out beyond the adhesive. The fastening device is especially suitable for use on cloth, whereby the pegs or projections are able to penetrate the sur
REFERENCES:
patent: 4010753 (1977-03-01), Tritsch
patent: 4067337 (1978-01-01), Ness
patent: 4336804 (1982-06-01), Roeder
patent: 4337772 (1982-07-01), Roeder
patent: 4376440 (1983-03-01), Whitehead et al.
Peppers Miley Craig
SCA Hygiene Products AB
Weiss John G.
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