Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Patent
1994-12-15
1996-08-27
Milano, Michael J.
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
604391, A61F 1315
Patent
active
055495915
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to tape tab fastener systems for disposable absorbent articles. More particularly to tape tab fastener systems combining mechanical and adhesive tape tab fastener means in a design with improved handling characteristics, improved construction stability, compatibility with compression packaging. In particular it comprises a short release tape which is protected against full or partial detachment from its foundation.
BACKGROUND OF THE INVENTION
The use of tape tab fastener systems for securing the corners of disposable absorbent articles such as diapers or incontinents briefs is well known in the art. Examples of adhesive tape tab fastener systems are disclosed in U.S. Pat. No. RE 26,151, U.S. Pat. No.3,848,594 and many other publications. While adhesive tape tab fastener systems did provide secure means for fixing a disposable absorbent article around a user's waist during use they were not totally satisfactory.
Adhesive tape tab fastener systems were often only usable upon initial fixation of the disposable absorbent article while refastening was not possible. They also displayed unsatisfactory resistance against contamination.
Hence the prior art discloses many alternative fastener systems trying to solve these problems. For example mechanical fastener systems of the hook/loop type (random entanglement) have been contemplated and disclosed in many publications. In general mechanical fastener systems have the advantage of reduced or no sensitivity versus contamination for example by oils or powders. Mechanical hook/loop fastener systems also have the advantage of being reclosable after opening for example to check the soiling of absorbent articles or to correct the fitting of absorbent articles on the wearer. However, mechanical fasteners require a two part fastening system e.g. tape tabs with hooks and a landing surface with loops.
Mechanical tape tab fasteners of the hook/loop type have been disclosed for use in diapers for example in U.S. Pat. No. 3,110,312 and for disposable diapers in U.S. Pat. No. 4,259,957 or European Patent Application EP-A-235014.
After establishing the principal advantages of mechanical fasteners over adhesive tape tab fasteners, it was found that mechanical fasteners lack the ease of disposability which the adhesive tape tab fasteners provided for disposable absorbent articles. Before disposing a used disposable absorbent article the article is often rolled up upon itself. This pack is then closed by applying the adhesive tape tab onto the outside surface of the rolled up disposable absorbent article.
The advantage of disposability is supplied by adhesive tape tabs which can be attached anywhere to the disposable absorbent article. Mechanical hook/loop fasteners by design require their respective counter surface to achieve an attachment. However, when rolling a disposable diaper onto itself one of the two mechanical fastening members, usually the landing member, is inside the roll and hence unaccessable.
Attempts to resolve this disposability problem have resulted in tape tab fastener systems combining mechanical and adhesive parts. Disclosure of such adhesive-mechanical tape tab fastener systems can be found for example in European Patent Applications EP-A-321232 or EP-A-324578. Adhesive-mechanical fastener systems have the combined advantages of low sensitivity versus contamination and exceptionally good reclosure performance as well as easy disposal of the absorbent article after use. However they still exhibit certain problems which only now have been defined and which are solved by the present invention.
Most adhesive-mechanical tape tab fasteners are in principle made like regular adhesive tape tab fasteners but include a mechanical fastener member on the adhesive tape surface. The adhesive of the tape is used to join the mechanical fastener member to the adhesive-mechanical tape tab fastener. In the process of making a disposable absorbent article the adhesive mechanical tape tab fastener is usually folded inwards i
REFERENCES:
patent: 5019065 (1991-05-01), Scripps
patent: 5288546 (1994-02-01), Roessler
patent: 5383872 (1995-01-01), Roessler
patent: 5403302 (1995-04-01), Roessler
Johnson Kevin C.
Milano Michael J.
Miller Steven W.
The Procter & Gamble & Company
Weirich David M.
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