Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Patent
1988-10-07
1991-02-19
Rosenbaum, C. Fred
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
128DIG15, 428100, 24306, A61F 1316
Patent
active
049940546
DESCRIPTION:
BRIEF SUMMARY
The invention relates to disposable articles, particularly all-in-one diapers for babies or incontinent adults and involves a self-attaching fastening means of the buckles and grips type. It concerns in particular the part provided with buckles.
Patent application FR 86 12403 registered by the applicant describes an all-in-one diaper the fastening means of which, enabling the diaper to be fitted around the waist, are of the buckles and grips type. One of the part of each lateral fastener is mounted on a tab integral with one edge of the absorbent pad, on the rear part of the diaper, and the complementary part is fixed to the external face of the pad at the front part. In this way, after placing the diaper around the bottom, one can tighten it around the waist of the user by joining each of the lateral tabs to its complementary part.
In this patent application, the grips part is preferably mounted on the lateral tab and the buckles part on the external face of the pad.
In order to cut manufacturing costs of disposable articles, as far as possible, one attempts to use parts that are themselves intended to be discarded following use.
There exists on the market self-attaching fasteners the buckle part of which is constituted by a fabric provided on one of its faces with raised buckles enabling the grips to be attached and embodied in accordance with a loose reinforcement offering an open structure.
When it is wished to secure a part of this type, i.e. the buckles part, to the outer face of the pad, which is conventionally a polyethylene sheet, a hot-melt glue is generally used, which is adhesive at ambient temperature, between the part and the plastic sheet. In a production machine with a high output rate, the adhesive is applied to either of the faces before coming into contact, after which the part is laid on the sheet and pressing it to ensure the bond.
This linking mode commonly used in the domain considered is however not possible with the part of the type desired, owing to the fluidity of the adhesive substance. It passes through the open structure of the fabric when pressed and links together the buckles with which it is provided on the opposite face. These buckles, once glued flat, are not longer effective and it is no longer possible to attach the grips of the complementary self-attaching part. The fastener is unusable.
The object of the invention is a part for a self-attaching fastener made from a buckles part with an open structure fabric, enabling it in particular to be fixed to a support by means of a cold adhesive glue and is characterized in that the buckles part is covered at least in part by film of synthetic resin intended to form a screen between the fabric of the buckles part and the cold adhesive glue.
The expression "open structure " is defined as being a structure in which the opening between the meshes is sufficient to enable a fluid to pass, of viscosity corresponding to that of a hot-melt glue, when pressure is exerted on the part, under the conditions prescribed on the machines used in the domain of disposable articles.
In practice, it is recognized that a structure is open when, after the non-buckled face of the part has been coated with adhesive and the part is applied to a flat support, the buckles can be glued together by pressing moderately with the finger on the buckled surface.
The skin is preferably obtained by coating a glue deposited hot, the viscosity of which is sufficient to prevent it passing through the meshes of the fabric and which, once cold, has no further residual tack. It is reminded that "tack" is the ability of an adhesive to form immediately a joint of measurable strength.
This arrangement offers many advantages:
After cooling, the skin forms a screen. During pressing, the cold adhesive bond is maintained between the skin and the sheet of polyethylene and links them without passing through the fabric. The efficiency of the buckles is not impaired.
Implementation is very simple, since it suffices in the case of an adhesive resin without cold tack to carry out a
REFERENCES:
patent: 4299223 (1981-11-01), Cronkrite
patent: 4537591 (1985-08-01), Coates
Brellmann Jean
Pigneul Raymond
Ruppel Remy
Breiner A. W.
Kaysersberg, SA
Maglione Corrine
Rosenbaum C. Fred
LandOfFree
Self-attaching fastener part notably for all-in-one disposable d does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Self-attaching fastener part notably for all-in-one disposable d, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-attaching fastener part notably for all-in-one disposable d will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1140601