U.S. patent number 3,875,621 [Application Number 05/439,102] was granted by the patent office on 1975-04-08 for multiply folded adhesive diaper fastener.
This patent grant is currently assigned to Colgate-Palmolive Company. Invention is credited to Hamzeh Karami.
United States Patent |
3,875,621 |
Karami |
April 8, 1975 |
Multiply folded adhesive diaper fastener
Abstract
A diaper fastener for use on a diaper having an inner surface,
an outer surface, and a lateral margin, the fastener comprising a
first strip of tape having an adhesive coated on one surface
thereof, a first portion of said one surface in contact with the
outer diaper surface adjacent the lateral margin for securing the
fastener to the diaper. A second strip member is adhesively secured
to a second portion of the first tape adjacent the first portion,
the second strip member including an opening therethrough whereby
adhesive in first tape second portion is exposed through said
opening. The second strip member includes an exposed surface which
has limited affinity for the adhesive. A third portion of the first
tape is in contact with the exposed surface of the second strip
member and includes an opening aligned with the opening in the
second strip member.
Inventors: |
Karami; Hamzeh (Crystal Lake,
IL) |
Assignee: |
Colgate-Palmolive Company (New
York, NY)
|
Family
ID: |
23743300 |
Appl.
No.: |
05/439,102 |
Filed: |
February 4, 1974 |
Current U.S.
Class: |
24/67R; 24/67AR;
604/389; 428/41.9 |
Current CPC
Class: |
A61F
13/58 (20130101); Y10T 428/1481 (20150115); Y10T
24/20 (20150115); Y10T 24/207 (20150115) |
Current International
Class: |
A61F
13/58 (20060101); A61F 13/56 (20060101); A43c
011/00 (); A44b 021/00 () |
Field of
Search: |
;24/61,67,7,11,9
;128/287,284 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Gilliam; Paul R.
Assistant Examiner: Troutman; Doris L.
Claims
I claim
1. A diaper fastener for use on a diaper having an inner surface,
an outer surface, and a lateral margin, the fastener comprising a
first strip of tape having an adhesive coated on one surface
thereof, a first portion of said one surface in contact with said
outer diaper surface adjacent said lateral margin for securing said
fastener to said diaper, a second strip member adhesively secured
to a second portion of said one surface adjacent said first
portion, said second strip member including an opening therethrough
whereby adhesive in said second portion is exposed through said
opening, said second strip member including an exposed surface
which has limited affinity for said adhesive, a third portion of
said one surface in contact with said exposed surface of said
second strip member and including an opening aligned with said
opening in said second strip member, the adhesive on said second
portion which is exposed through said first and second aligned
openings being in contact with said diaper inner surface.
2. A diaper fastener as claimed in claim 1 wherein said opening in
said second strip member is adjacent said third portion.
3. A diaper fastener as claimed in claim 2 wherein said opening in
said second strip member is laterally centered with respect to said
first strip of tape.
Description
BACKGROUND OF THE INVENTION
This invention relates to diaper fasteners of the variety which
include an adhesive-bearing tape for securing opposite ends of the
tape to different parts of the diaper thereby retaining the diaper
on an infant.
Tape fasteners of this general variety have been proposed which
include a strip of tape and a centrally located release sheet which
is adhesively secured to the strip of tape and has an exposed
surface which has been treated to have a limited affinity for the
adhesive. An end portion of the strip of tape is folded over for
contact with that exposed surface thereby retaining the fastener in
a folded configuration and protecting the adhesive on that end
portion without the necessity of a separate, removable release
sheet.
SUMMARY OF THE INVENTION
It is a principal object of the present invention to provide for an
improved fastener of the type described above, which is easy to use
and compact and neat appearing as presented to the consumer.
To achieve these and other objects, diaper fastener constructed
according to the present invention comprises a first strip of tape
having an adhesive coated on one surface thereof. A first portion
of that surface is in contact with the outer diaper surface
adjacent said lateral margin for securing the fastener to the
diaper. A second strip member is adhesively secured to a second
portion of the first tape adjacent the first portion, the second
strip including an opening therethrough whereby adhesive on the
second portion is exposed through the opening. The second strip
member includes an exposed surface which has limited affinity for
the adhesive. A third portion of said first tape is in contact with
the exposed surface of the second strip and includes an opening
aligned with the opening in the second strip. Preferably, the
opening in the second strip is adjacent the third portion of the
first strip and is laterally centered with respect to the first
strip of tape.
BRIEF DESCRIPTION OF THE DRAWING
Other objects, features, and advantages of the invention will be
apparent from the following description of a particular preferred
embodiment, taken together with the accompanying drawings in
which:
FIG. 1 is a perspective view of a diaper fastener constructed
according to the present invention in the configuration as
presented to the consumer;
FIG. 1A is a view taken at 1A--1A of FIG. 1;
FIG. 2 is a perspective view of the fastener of FIG. 1 as partially
extended; and
FIG. 3 is a perspective view of the fastener of FIG. 1 as fully
extended preparatory to use in securing a diaper to an infant.
DETAILED DESCRIPTION OF A PARTICULAR PREFERRED EMBODIMENT
Referring to the drawing, a disposable diaper 10 comprises an
absorbent body 12 disposed between an outer water impervious
plastic backing sheet 14 and an inner water pervious liner 16. The
backing sheet 14 extends around the diaper lateral margin 18
providing portion 20 of the plastic which forms a portion of the
diaper's inner surface.
A fastener 22 constructed according to the present invention
comprises a first strip of tape 24 and a second strip member 26.
The strip of tape 24 is approximately three times as long as the
strip 26 and has an adhesive coated over the entirety of its
surface 28 (i.e., the upper surface of strip 24 as viewed in FIG.
3). A first portion 30 of the surface 28 is in contact with the
plastic outer surface of the diaper 10 adjacent the lateral margin
18 and is adhesively secured thereto. The portion 32 of strip 24
which underlies the strip 26 comprises a second portion of the
strip 24 which abuts the portion 30 in the region of the lateral
margin 18. A third portion 34 of the strip 24 extends from the end
of strip 26 remote from the lateral edge 18 (as viewed in FIG. 3)
to the end of the strip 24.
The strip member 26 may comprise paper with its upper surface 36
treated with a release agent. The strip 26 is provided with an
opening 38 whereby a portion 40 of the adhesive in the tape portion
32 is exposed. As best seen by a comparison of FIGS. 2 and 3, the
portion 34 of tape strip 24 is provided with an opening 42 which is
aligned with the opening 38 when the portion 34 is folded over for
contact with the surface 36.
As best seen in FIG. 2, when the portion 34 is folded over for
contact with surface 36, the alignment of openings 38 and 42
exposes a region 40 of adhesive. By then folding the strip 24
around the lateral margin 18 of the diaper 10 the region 40 of
exposed adhesive can be brought in contact with the portion 20 of
plastic backing sheet 14, as in FIG. 1A. The adhesive in the region
40, therefore, serves to retain the fastener 22 in a compact, neat
appearing configuration prior to the use of the fastener. The
fastener configuration also is an aid to automated packaging of the
diapers since loose, projecting tapes are eliminated.
When the diaper is to be placed on an infant, the folded over
portion of the fastener which overlies the inner surface of the
diaper can readily be pulled free from the portion 20 of the
plastic 14 to achieve a configuration as shown in FIG. 2. Even
though the adhesive used forms a strong bond with the plastic 14,
by making the region 40 small enough a bond can be achieved which
is easily overcome by the consumer and yet sufficient to retain the
fastener in the configuration shown in FIG. 1 during normal
manufacturing and handling processes. Finally, the portion 34 of
strip 24 is peeled from the surface 36 of the strip 26 to achieve
the configuration shown in FIG. 3.
With the arrangement shown in FIG. 3, the exposed adhesive in the
region 34 of strip 24 is available for securing the diaper to the
infant, while the exposed surface 36 of the strip 26 provides a
non-adhesive region in the area where the front and back waistline
portions of a conventional diaper are brought into contact prior to
taping. This latter feature, of course, assures that even if the
diaper is ill-fitting and/or stretched or twisted during use, the
adhesive on the fastener 22 will never come in contact with the
infant's skin.
While a particular preferred embodiment has been illustrated in the
accompanying drawing and described in detail herein, other
embodiments are within the scope of the invention and the following
claims.
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