U.S. patent number 3,875,942 [Application Number 05/310,373] was granted by the patent office on 1975-04-08 for diaper containing powder having properties beneficial to skin.
This patent grant is currently assigned to Colgate-Palmolive Company. Invention is credited to Sandford A. Haver, Karl H. Roberts.
United States Patent |
3,875,942 |
Roberts , et al. |
April 8, 1975 |
Diaper containing powder having properties beneficial to skin
Abstract
A disposable diaper having a absorbent core, an outer liquid
impervious sheet on one side of the core and a layer of powder on
the other side of the core. A perforated non-absorbent facing
overlies the layer of powder and has a plurality of perforations
therein for permitting flow of powder onto the crotch area of an
infant using the diaper.
Inventors: |
Roberts; Karl H. (Flemington,
NY), Haver; Sandford A. (Rye, NY) |
Assignee: |
Colgate-Palmolive Company (New
York, NY)
|
Family
ID: |
23202200 |
Appl.
No.: |
05/310,373 |
Filed: |
November 29, 1972 |
Current U.S.
Class: |
604/370; 604/359;
604/374 |
Current CPC
Class: |
A61F
13/512 (20130101); A61F 13/8405 (20130101); A61F
2013/51372 (20130101); A61F 2013/51117 (20130101) |
Current International
Class: |
A61F
13/15 (20060101); A61f 013/18 () |
Field of
Search: |
;128/284,286,287,290 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Medbery; Aldrich F.
Attorney, Agent or Firm: Sylvester, Esq.; Herbert S. Grill,
Esq.; Murray M. Koch, Esq.; Kenneth A.
Claims
We claim:
1. A disposable diaper adapted to be used in contact with human
skin comprising an outer sheet of liquid impervious material, an
absorbent core on said sheet, a layer consisting of loose powder
evenly distributed over said core, said powder having lubricating
and drying effects on the skin, and an inner sheet of non-absorbent
material overlying said layer of powder, said inner sheet having a
plurality of perforations to permit the passage of liquid to the
core of the diaper and the passage of powder onto the skin.
2. A disposable diaper according to claim 1 wherein said absorbent
core is thicker at its center than at its edges and said inner
sheet is stretched over said absorbent core for compacting said
layer of powder.
3. A disposable diaper according to claim 1, wherein said outer
sheet is a film of polyethylene, said inner sheet being of a
non-woven tissue and overlying and compacting said layer of
powder.
4. A disposable diaper according to claim 1, wherein said core
includes a soft mat of wood fluff sandwiched between two thin
absorbent tissues, said outer sheet being a film of polyethylene,
said inner sheet being of a non-woven tissue.
5. A disposable diaper according to claim 1, wherein said inner
sheet is of non-woven tissue.
6. A disposable diaper according to claim 1, wherein said outer
sheet is a thin film of polyethylene.
7. A disposable diaper according to claim 1, wherein said core
includes a soft mat of wood fluff sandwiched between two thin
absorbent tissues.
Description
BACKGROUND AND FIELD OF THE INVENTION
This invention relates to a disposable diaper and more particularly
to a powdered diaper for making available an immediate supply of
powder from a diaper to an infant's skin in the contact area for
lubrication and drying effects.
DESCRIPTION OF THE PRIOR ART
Disposable diapers have been devised for absorbing excrement from
an infant in a manner so as to prevent the soiling of outer
garments and so that upon disposal of the diaper, all that need be
done is to dry and lubricate the skin of the infant. However,
material used for drying and lubricating the infant's skin often
includes bulky cans of powder, baby oil, and the like, which are
burdensome for travel with the infant.
The present invention provides for a diaper which contains its own
supply of powder which will feed itself to the skin of the infant
during initial wear thereof so as to dry, lubricate and protect the
infant's skin from chaffing while also serving to neutralize the
chemical effects of the urine and feces thereafter.
Various types of diapers have been devised in the past which
contain layers of absorbent material while the patent to Hayford,
U.S. Pat. No. 3,585,998, provides for encapsulated baby oil in a
diaper. None of the prior provides for retaining a suitable layer
of powder in the diaper adapted for convenient and efficient
self-application onto the skin of a baby.
SUMMARY OF THE INVENTION
It is therefore the primary object of the present invention to
provide a powdered diaper adapted to make available an immediate
supply of powder from the diaper to the infant's skin in the
contact areas for lubrication and drying effects.
It is a further object of the invention to provide a diaper adapted
for self-application of powder to the crotch area of an infant at
the time of dressing the infant with the diaper and during the use
thereof by the baby.
The construction of this invention features a composite layered
diaper having an outer sheet of liquid impervious material, a core
of woodfluff sandwiched between thin absorbent tissues, a powder
layer and a non-absorbent inner layer having a plurality of small
perforations for permitting the passage of liquid to the core of
the diaper and the passage of powder onto the skin of the
infant.
Still further objects and features of this invention reside in the
provision of a disposable diaper that is simple in construction and
manufacture, capable of being produced out of readily available
material, and which will eliminate the need of the infant's
guardian in carrying bulky cans of powder and the like when
travelling with the infant.
These, together with the various ancillary objects and features of
the present invention, which will become apparent as the following
description proceeds, are attained by this diaper containing powder
having properties beneficial to skin, a preferred embodiment of
which is illustrated in the accompanying drawing, by way of example
only, wherein:
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is an exploded perspective view of a powdered diaper
constructed in accordance with the concepts of the present
invention; and,
FIG. 2 is a vertical sectional view taken along the plane of line
2--2 in FIG. 1.
DESCRIPTION OF THE PREFERRED EMBODIMENT
With continuing reference to the accompanying drawing, wherein like
reference numerals designate similar parts throughout the various
views, reference numeral 10 is used to generally designate the
powdered disposable diaper constructed in accordance with the
present invention. This diaper has four main component parts,
including an outer sheet 12, a core 14, a layer of powder 16 and an
inner sheet 18.
The outer sheet 12 is made of a suitable waterproof non-absorbent
material, which is liquid impermeable, for preventing liquid from
passing entirely through the diaper. The sheet 12 is preferably
made of a polyethylene film.
The absorbent core 14 is made from a soft highly absorbent mat of
wood fluff 20 sandwiched between two thin absorbent tissues 22 and
24. An appropriate quantity of powder is evenly distributed on the
top of the absorbent core 14 to form a layer 16. The outer sheet 18
is in the form of a non-absorbent soft, non-woven tissue having a
large number of small perforations 26. The sheet 18 permits the
passage of liquid to the core of the diaper and the passage of
powder to the surface of the diaper, thereby providing a "dry feel"
next to the infant.
In order to assure proper functioning of the invention, the inner
sheet 18 is drawn taunt over the powder compacting the powder layer
16. This can be accomplished by making the mat of wood fluff 20
slightly thicker in the central portions thereof rendering it more
absorbent at the critical areas, while rendering the entire diaper
more flexible at the extremities thereof. Thus, with the inner
sheet 18 stretched taunt when secured to the other layers, as by
stitching or bonding, an effective compacting of the powder layer
is achieved. Accordingly, the powdered diapers can be conviently
packed and handled without likelihood of any loss of powder, yet
when the diaper is placed on the baby, the taut condition of the
inner sheet 18 is eliminated and the powder becomes self-applicable
onto the skin of the baby eliminating the often dangerous to the
baby application from the powder can which inadvertently can allow
loose powder to enter the breathing apparatus of the baby.
A latitude of modification, substitution, and change is intended in
the foregoing disclosure, and in some instances, some features of
the present invention may be employed without a corresponding use
of other features.
* * * * *