U.S. patent number 3,554,195 [Application Number 04/728,443] was granted by the patent office on 1971-01-12 for napkin for babies.
This patent grant is currently assigned to Bowater-Scott Corporation Limited. Invention is credited to Ian Lindsay Murdoch.
United States Patent |
3,554,195 |
Murdoch |
January 12, 1971 |
NAPKIN FOR BABIES
Abstract
A baby's napkin comprises a paper-thin backing sheet having a
central crutch portion at the top of the sheet which is wider than
a front portion at the bottom of the sheet, so that in use the ends
of the back portion overlap end areas of the front portion, and one
face of each pair of overlapping faces carries an area of
pressure-sensitive adhesive protected by a strippable covering.
Inventors: |
Murdoch; Ian Lindsay (Barnes,
London, EN) |
Assignee: |
Bowater-Scott Corporation
Limited (London, EN)
|
Family
ID: |
10186151 |
Appl.
No.: |
04/728,443 |
Filed: |
April 13, 1968 |
Foreign Application Priority Data
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|
|
|
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May 17, 1967 [GB] |
|
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22856/67 |
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Current U.S.
Class: |
604/365; 2/402;
2/406; 604/370; 604/372; 604/375; 604/390 |
Current CPC
Class: |
A61F
13/60 (20130101); A61F 13/58 (20130101) |
Current International
Class: |
A61F
13/58 (20060101); A61F 13/60 (20060101); A61F
13/56 (20060101); A61f 013/16 () |
Field of
Search: |
;128/287,288,524--529,284 ;2/224,67 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Eager; Adele M.
Claims
I claim:
1. A napkin for babies characterized by an impermeable backing
sheet of paper thinness (about .025 mm. thinness) comprising a
marginal a back portion at the top and a marginal front portion at
the bottom of the backing sheet, the backing sheet having a central
crutch portion between the said marginal portions and having
concave arcuate side edges adapted to fit in a fluid-tight manner
around a baby's thighs when the napkin is applied to the baby, the
back portion at the top of the backing sheet being wider than the
front portion at the bottom of the backing sheet so that in use the
ends of the back portion overlap the end areas of the front portion
to an extend sufficient to provide holding areas with adhesive
inside the overlapping faces, one face of each pair of the
overlapping faces being provided with an exposable
pressure-sensitive adhesive protected by strippable covering.
2. A napkin for babies according to claim 1, comprising at end area
of the marginal back portion at the top of the backing sheet an
adhering plastics film coated with a pressure-sensitive adhesive
temporarily protected by siliconized release paper, whereby on
stripping the release paper the pressure-sensitive adhesive can be
applied to the end areas of the marginal front portion and finger
pressure exerted to secure together the said end areas of the
marginal front and back portions of the backing sheet.
3. A napkin for babies according to claim 1, comprising a wad of
absorbent material of a width slightly less than the minimum width
of the crutch portion of the backing sheet, there being only a
single sheet of material, said wad being secured to said single
sheet and presenting a free and unobstructed outer surface for
direct contact with a baby's body.
4. A napkin for babies according to claim 1, comprising an
absorbent wad consisting of fluffed cellulose pulp covered with
nonwoven fabric secured by adhesive to the backing sheet.
5. A napkin for babies according to claim 1, including an absorbent
was wad secured on the backing sheet by gauze material covering the
wad and adhesively held in position on the backing sheet.
6. A napkin for babies according to claim 1, wherein the backing
sheet is blanked out of a sheet of impermeable material and covered
by tissue paper adhesively secured to the whole area of contact
with the backing sheet.
Description
BACKGROUND OF THE INVENTION
This invention relates to the manufacture of napkins for babies and
has for its main object to manufacture a napkin which is
essentially comfortable for the baby, easy to apply without the use
of pins, efficient in use and wholly disposable.
SUMMARY
A napkin for babies constructed according to the present invention
is characterized by an impermeable backing sheet of paper thinness
(about .025 mm. thinness) comprising a marginal back portion at the
top and a marginal front portion at the bottom of the backing
sheet, the backing sheet having a central crutch portion between
the said marginal portions and having side edges adapted to fit
around a baby's thighs when the napkin is applied to the baby, the
back at the top of the backing sheet being wider than the front
portion at the bottom of the backing sheet so that in use the ends
of the back portion overlap the end areas of the front portion to
an extent sufficient to provide holding areas with adhesive inside
the overlapping faces, one face of each pair of overlapping faces
being provided with an exposable pressure-sensitive adhesive
protected by strippable covering.
A backing sheet used in napkins constructed according to the
present invention may be a thin sheet produced from one of the
industrial plastics inert in the circumstances of use, and may be
covered with tissue paper. The plastic sheet material used must be
soft and easily pliable in any direction and if a paper covering is
used, this must be intimately secured thereto over the whole area
of to avoid ruffling.
In referring to the backing sheet as being impermeable reference is
made to the character of the plastic element of the backing sheet,
and the term " impermeable" means what is generally referred to in
the art to which the present invention belongs, as
"waterproof."
A napkin for babies constructed according to the invention
preferably comprises at each end of the marginal back portion at
the top of the backing sheet a securing tab having an adhering
plastics film coated with a pressure-sensitive adhesive temporarily
protected by siliconized release paper whereby on stripping the
release paper the pressure-sensitive adhesive can be applied to the
end areas of the marginal front portion and finger pressure exerted
to secure together the end areas of the front and back portions of
the backing sheet.
A napkin for babies constructed according to the present invention
may also comprise a wad of absorbent material of a width slightly
less than the minimum width of the crutch portion of the backing.
The absorbent wad preferably consists of fluffed cellulose pulp
covered with a nonwoven fabric material secured by adhesive to the
backing.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a plan view of the backing sheet, in one example of the
invention, showing the securing tabs on the marginal back portion
at the top of the backing sheet and a symmetrically arranged
absorbent wad,
FIG. 2 is a view showing the first step in suing the napkin
constructed according to the invention in which the front portion
is folded towards the back portion,
FIG. 3 is a view similar to FIG. 1 showing the second state where
the release paper is removed from the adhesive tabs, and
FIG. 4 shows the final step in which the end areas and the securing
tabs of the back portion are folded over onto the outside face of
the front portion ready for securing the two together in the
overlaps by thumb and finger pressure.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In the drawings the impermeable backing sheet is generally
identified by the reference 10, the backing sheet being formed from
a sheet of plastic material, such as polyvinyl chloride, the
thinness of the sheet being about .025 mm., and comprising at the
top of the backing sheet the back portion of the napkin indicated
by reference 12 and at the bottom of the backing sheet the front
portion of the napkin indicated by the reference 11.
Between the back and front portions of the napkin the side edges
are similarly shaped to fit around a baby's thighs, the central
area of the napkin constituting a crutch portion 13.
An absorbent wad 14 overlies the crutch portion and extends nearly
to the top and to the bottom of the backing sheet as clearly shown
in FIG. 1. The wad 14 has a width slightly less than the minimum
width of the crutch portion 13. The wad 14 in the embodiment shown
consists of fluffed cellulose pulp covered with a nonwoven fabric
material secured to the backing sheet by adhesive. Alternatively
the wad may be enclosed in a permeable covering, which may be
formed of knitted gauze, and the gauze may be secured to the
backing sheet to hold the was in required medial position.
At each end of the marginal back portion of the backing sheet, are
tabs, generally indicated at 15, which, in use, overlap the end
areas of the front portion, and are provided with adhesive surfaces
for securing the end areas of the back portion onto the outer face
of the front portion.
As clearly shown in FIG. 3 the tabs 15 have an adhesive surface 17
is protected by a strippable covering 16 of siliconized release
paper until the napkin is going to be used. When the napkin is to
be fitted onto a baby, the front portion of the napkin is drawn
upwardly, as indicated by the arrows 18 in FIG. 2, the protective
covering 16 is stripped back and exposes the adhesive surface 17
which is then ready to engage the outer surface of the front
portion 11 of the napkin. The covering 16 is preferably coloured
for ease of identification.
It will be seen that by varying the position at which the adhesive
tab 15 is applied to the front portion 11, a variation in the waist
measurement of the napkin is afforded. Variations in the thigh
measurements are also afforded by selection of the position at
which the tabs are secured to the front portion.
As shown in FIG. 4, following the removal, or part removal, of the
protective covering 16 the end areas of the back marginal portion
of the napkin are folded onto the outer face of the front marginal
portion of the napkin and then finger and thumb pressure is exerted
on the overlap produced to secure the napkin in position without
the use of pins or other hard elements such as press-studs.
The removal of the covering 16 and the fixing of each adhesive tab
15 to the front portion may be effected almost as a simultaneous
operation, similar to the application of sticking plaster onto a
person's skin, such operation being rapidly and easily
performed.
The backing sheet, instead of being constituted solely by the thin
sheet of polyvinyl chloride, may be a sheet of the plastic material
covered with a tissue, the tissue being closely adherent to the
plastic sheet over the whole area of contact so as to avoid
ruffling. The employment of the tissue makes the napkin more
comfortable to apply by eliminating the contact of the relatively
cold plastic surface to the limbs and body of the child.
The adhesive surfaces 17 of the tabs 15 may be formed of a
pressure-sensitive adhesive which may be that obtainable on the
open market in ribbon form consisting of polypropylene film with
adhesive coated on each face and with each coating protected by an
overlying siliconized release paper, a length sufficient for each
tab being cut from the ribbon.
In the course of manufacturing a backing sheet according to the
invention, the paper on one face only of the ribbon material is
removed immediately before application of cutoff sections thereof
to the tabs 15, then the sections of adhesive ribbon are pressed
onto the tabs 15 with the siliconized release paper still adhering
to the outside thereof. The napkin is then ready for use in the
manner described above.
Alternatively, the adhesive may be coated directly onto the tabs of
the back marginal portion, and then covered with release paper.
As regards the formation of the impermeable backing sheet, instead
of blanking it out of a sheet of polyvinyl chloride, sheets of
polypropylene or other polyolefins, polyamide of polyester may be
employed.
By use of the present a readily applied (without the use of pins)
napkin is produced which is exceptionally soft to the child and is
effective for the purpose intended. At the same time it is a easy
to remove the napkin as a disposable article by tearing the thin
backing material.
The adhesive may equally well be applied to either face of each
pair of overlapping faces. For example, as an alternative to
providing the pressure-sensitive adhesive on the inside face of the
tabs 15, with the same shape of backing sheet 10 the adhesive may
be applied to the outside face of the overlapping end areas of the
front portion 11.
Furthermore, if the end areas of the front portion 11 were to be
slightly extended, adhesive could be applied to the inner surfaces
of these extensions for fixing to the outside of the end areas of
the back portion 12.
* * * * *