Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Reexamination Certificate
1997-08-27
2001-07-24
Lewis, Aaron J. (Department: 3761)
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
C604S390000, C604S396000
Reexamination Certificate
active
06264644
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates generally to disposable body fluid absorbent articles such as disposable diapers, sanitary napkin or incontinent pants and more particularly to such articles provided with means used to secure such articles in a state convenient for disposal thereof.
Japanese Laid-Open Utility Model Application No. Sho5822908discloses a disposable diaper provided with an adhesive tape used to secure the used diaper in a rolled up or folded state to prevent any stained portion of the diaper from being exposed. Therefore, the used diaper can be disposed of in a manner which is not only sightly but also sanitary.
The foregoing adhesive tape has its inner surface applied with adhesive by means of which one end portion (fixed end portion) of the adhesive tape is fixed to the outer surface of a backsheet of the diaper and the opposite end portion defines a free end portion. The used diaper can be maintained in a rolled up or folded state by bonding the free end portion of the adhesive to the diaper at an appropriate location.
With the foregoing adhesive tape, a shear stress is generated between the adhesive tape and the backsheet as the adhesive tape is linearly pulled in the direction from the fixed end portion toward the free end portion. According to this prior art, the adhesive is selected so that the shear stress does not peel the fixed end portion off from the backsheet. However, when the free end portion of the adhesive is pulled so as to be folded back toward the fixed end portion, a peeling force is generated between the fixed end portion and the backsheet. As a result, the fixed end portion is easily peeled off from the backsheet or the backsheet is broken in the proximity of the fixed end portion. Such undesirable situation may often occur, for example, when a baby wearing the diaper plays with the adhesive tape.
SUMMARY OF THE INVENTION
In view of the problem as has been mentioned above, it is a principal object of the invention to improve a disposable body fluid absorbent article provided with an adhesive tape used to secure the article prior to disposal of the article so that the adhesive tape cannot be easily peeled off from the article.
The object set forth above is achieved, according to the invention, by a disposable body fluid absorbent article comprising an inner surface intended to be placed adjacent a wearer's skin, an outer surface intended to be placed remotely from the wearer's skin and disposal securing means used to secure said article in a shape desired for disposal of said article, wherein:
said disposal securing means comprise a first tape and a second tape disposed between said first tape and the outer surface of the article and extending in alignment with said first tape;
said first tape has inner and outer surfaces and comprises a first fixed portion extending adjacent longitudinally one end and fixed on the inner surface of said first tape to the outer surface of said article and a free portion extending adjacent the longitudinally opposite end, said free portion comprising, as viewed from said longitudinally opposite end toward said first fixed portion, a tab zone having no adhesive on both the inner and outer surfaces of said first tape and an adhesive zone having adhesive on the inner surface of said first tape alone;
said second tape has inner and outer surfaces and comprises a second fixed portion extending from said free portion toward said first fixed portion of said first tape and fixed on the inner surface of said second tape to the outer surface of said article and a fold-back portion being contiguous to said second fixed portion and folded back adjacent said first fixed portion of said first tape with the inner surface of said second tape facing outward; and
said adhesive zone provided on said free portion of said first tape is bonded to the outer surface of said second fixed portion of said second tape and said fold-back portion of said second tape is fixed on the outward facing surface of said fold-back portion to the inner surface of said free portion of said first tape.
In the article according to the invention, the disposal securing means for this article after use comprises the adhesive tape and the release tape. The adhesive tape is fixed at its one end to the outer surface of the article and the release tape has the fold-back portion fixed to the inner surface of the adhesive tape at the location in the proximity of said one end. When a tension is exerted to the adhesive tape, substantially no peeling force is exerted to the end of the adhesive tape at which the adhesive tape is fixed to the outer surface of the garment. In this manner, the adhesive tape is not readily peeled off from the article.
Other and further objects, features and advantages of the invention will appear more fully from the following description.
REFERENCES:
patent: 4047528 (1977-09-01), Karami
patent: 4207895 (1980-06-01), Schaar
patent: 4516976 (1985-05-01), Bell
patent: 4869724 (1989-09-01), Scripps
patent: 0 314 535 (1989-05-01), None
patent: 0 338 680 (1989-10-01), None
patent: 6623330 (1994-11-01), None
patent: 58-22908 (1983-02-01), None
patent: 94 09736 (1994-05-01), None
Igaue Takamitsu
Soga Hiroyuki
Lewis Aaron J.
Lowe Hauptman & Gilman & Berner LLP
Reichle K. M.
Uni-Charm Corporation
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