U.S. patent number 3,911,603 [Application Number 05/473,844] was granted by the patent office on 1975-10-14 for ironing board cover.
This patent grant is currently assigned to The Ironees Company. Invention is credited to David Lehrman.
United States Patent |
3,911,603 |
Lehrman |
October 14, 1975 |
Ironing board cover
Abstract
An ironing board cover comprising a layer of fabric and a layer
of heat resistant padding adhesively bonded thereto. The fabric
extends beyond the borders of the padding to define a skirt which
can be turned underneath the ironing board to secure the cover
thereto. The padding is bonded to the fabric by use of heat and
minimal pressure.
Inventors: |
Lehrman; David (Cheltenham,
PA) |
Assignee: |
The Ironees Company
(Philadelphia, PA)
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Family
ID: |
26983534 |
Appl.
No.: |
05/473,844 |
Filed: |
May 28, 1974 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
|
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322657 |
Jan 4, 1973 |
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Current U.S.
Class: |
38/140 |
Current CPC
Class: |
D06F
83/00 (20130101) |
Current International
Class: |
D06F
83/00 (20060101); D06F 081/14 () |
Field of
Search: |
;38/140,66,141,68,107,142 ;161/80,82,88,89,90,151,161
;66/136,170 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Larkin; Geo. V.
Attorney, Agent or Firm: Seidel, Gonda & Goldhammer
Parent Case Text
This application is a C.I.P. of my copending application Ser. No.
322,657 entitled Ironing Board Cover and filed Jan. 4, 1973, now
abandoned.
Claims
I claim:
1. A wrinkle free ironing board cover comprising a layer of heat
resistant fabric, a layer of heat resistant padding which is
substantially thicker than said layer of fabric, said padding
including two major surfaces of substantially the same size and
shape of the surface of the ironing board to be covered, said layer
of fabric being adhesively bonded to substantially the entire area
of one of the major surfaces of said layer of padding by a
thermoplastic adhesive, such that during ironing, softening of said
adhesive occurs at about 200.degree.-250.degree. F., allowing the
cover to be maintained in a wrinkle free condition, said layer of
fabric having the same shape but being larger in size than the
layer of padding, the portion of said layer of fabric between said
padding and the edges of said layer of fabric defining a marginal
skirt, said skirt being integral with said layer of fabric, and
means for securing said cover to an ironing board.
2. An ironing board cover as defined in claim 1 wherein said skirt
is of sufficient width to enable the edges of said fabric to
underlie the ironing board when said cover is secured thereon by
said securing means.
3. An ironing board cover as defined in claim 1 including a layer
of heat reflective material between said one major surface of said
padding and the adjacent surface of said fabric.
4. An ironing board cover as defined in claim 1 including an
aperture in said layer of fabric and integral iron support means
for resting an iron thereon being disposed in said aperture and
being bonded to said padding.
5. An ironing board cover as defined in claim 1 wherein said layer
of fabric has a plurality of apertures therein, said apertures
being operative to increase the frictional force applied to an item
to be ironed.
6. An ironing board cover as defined in claim 1 wherein said
thermoplastic adhesive is a self-reactive acrylic copolymer latex
with heat reactive cross-linking groups.
Description
This invention relates to ironing board covers and more
particularly to an ironing board cover of the type which has
padding integrally formed therewith and a method of making the
same.
It is known to make ironing board covers from various combinations
of fabric material and padding. Typical of ironing board covers of
the type comprising two materials is that shown in U.S. Pat. Nos.
3,691,661 or No. 3,414,995. Typically, the padding has been
coextensive with the fabric layers to which they are bonded. Thus,
when the cover is secured to the ironing board, the padding is
tucked underneath the board.
A number of disadvantages result from having the padding
coextensive with the fabric layer. Thus, because the padding is
coextensive with the fabric layer, it is difficult to tighten the
ironing board cover because of the resistance offered by the
attached underpadding as it is drawn together and turned on itself.
Further, the additional cost of providing that portion of the
padding which is turned underneath the ironing board is incurred,
although that portion of the padding is totally unnecessary for any
ironing function whatsoever.
Accordingly, in recognition of the foregoing problems, the
invention relates generally to an ironing board cover which
comprises a layer of fabric and padding in the form of a layer of
heat resistant foam material bonded thereto. The padding may be a
layer of polyurethane or other suitable heat resistant foam
material. The padding is bonded to the layer of fabric by a
thermo-plastic adhesive. The bonding is accomplished by the
application of high heat and minimal pressure. However, the
finished ironing board cover is capable of withstanding the
temperatures and pressures applied during ironing.
The padding is substantially the same size as the ironing board to
be covered. The layer of fabric is larger than the padding so that
a marginal integral skirt is defined between the edge of the
padding and the edge of the layer of fabric. The skirt is an
integral part of the ironing board cover and is formed without the
necessity of a separate sewing operation.
The thermoplastic adhesive is applied to one face of the padding.
Alternatively, the adhesive could be applied to the fabric over an
area corresponding to the area defined by the padding. The padding
is placed upon a tray or other suitable surface with the adhesively
coated face exposed. The fabric is placed over the padding and is
positioned so that there is a uniform width marginal skirt defined
between the outer peripheral edge of the padding and the outer
peripheral edge of the fabric. The outer face of the fabric which
will provide the outer surface of the ironing board cover will be
contacted by the heated platen.
The tray or surface is reciprocated into a press. The top platen of
the press is heated to a temperature of approximately between
300.degree. to 450.degree.F. Minimal pressure is applied when the
platen is brought into contact with the outer face of the fabric.
It is important that pressure be minimal in order to avoid
substantial compression of the foam padding. Only the top 1/16 inch
to 1/8 inch of the padding should be compressed so that the desired
thickness of the padding will be maintained. I have found that too
much pressure will result in crushing of the foam padding during
the bonding and curing steps with the adhesive being forced through
the foam padding and preventing the foam from recovering its
original shape thereby resulting in an unacceptable ironing board
cover.
The top platen is held in place from approximately 3-8 seconds
while the adhesive is cured. The optimum operating temperature of
the platen is 425.degree.F although other temperatures can be used
as noted above. No heat is applied through the bottom of the
padding since such heat would adversely affect the foam padding
during bonding.
The preferred adhesive will soften at approximately 200.degree.F to
250.degree.F although I have found that softening of the adhesive
does not cause delamination, rather, the quality of the bond is
increased. Most ironing is done with an iron heated to
approximately 150.degree.F to 300.degree.F although higher iron
temperatures are employed for special fabrics.
Accordingly, upon ironing, the adhesive may soften thereby
permitting any initial wrinkles to be ironed out of the cover and a
wrinkle free cover to be maintained. I have observed that there is
no deleterious effect upon the ironing board cover as the result of
the use of a hot iron and the application of localized pressure
during ironing. I surmise that this is due to the fact that the
iron is not kept in one location for an inordinate length of time
and that the adhesive does not become highly fluid as a result of
the localized heat applied by the iron.
For the purpose of illustrating the invention, there is shown in
the drawings a form which is presently preferred; it being
understood, however, that this invention is not limited to the
precise arrangements and instrumentalities shown and wherein:
FIG. 1 is an exploded perspective view of the ironing board cover
and an ironing board.
FIG. 2 is a perspective view of the underside of an ironing board
with the cover secured thereto.
FIG. 3 is a broken away portion of the underside of an ironing
board cover.
FIG. 4 is a sectional view taken along line 4-4 of FIG. 2.
Now referring to the drawing for a detailed description of the
invention, an ironing board cover 10 is shown generally in FIG. 1.
Cover 10 comprises a layer of fabric 12 which has the general
outline of a typical ironing board 11, but its edges extend past
the edges 15 of the ironing board 11. Preferably, the layer of
fabric 12 is made from a suitable material which will resist the
heat and pressure normally applied during ironing. Such fabrics are
well known in the art and are readily available commercially. Thus,
they will not be described in detail.
The edges 14 of the layer of fabric 12 may have binding or welting
16 through which a drawstring 18 is run. As best seen in FIG. 3,
the binding or welting 16 comprises a strip of material 20 which is
doubled over on itself and stitched over the edge of the layer of
fabric 12 to provide a conduit for housing the drawstring 18.
Padding 24, having generally the same shape as the layer of fabric
12, is provided. Padding 24 is preferably a layer of foam polymeric
material such as foam polyurethane and is approximately 1/4 inch
thick. The layer of padding 24 is substantially thicker than the
layer of fabric 12. However, the edges of the padding 24 are
coextensive with and uniformly spaced from the edges 15 of the
ironing board 11 to form the cover on which the ironing is
effected.
The padding 24 is secured to the layer of fabric by an adhesive as
described hereinafter. The preferred adhesive is a thermoplastic
polymer material with heat reactive cross linking groups such as
NACRYLIC X-4260 (trademark) which is a self-reactive acrylic
copolymer latex. Such adhesive has a clarity of water white, a
solids content of 51 percent, pH of 3.5, average particle size of
0.18 microns, anionic particle charge, excellent stability density
of 8.8 lbs/gal., and excellent water and solvent resistance.
Due to the adhesive bonding between padding 24 and layer of fabric
12, the laminate is wrinkleproof. The laminate has increased
tensile strength, and abrasion resistance, and is permanently
locked on the fabric 12. During ironing any handling or packaging
wrinkles are ironed perfectly smooth by the automatic softening and
rehardening of the adhesive used.
When installed on an ironing board, the padding 24 as shown in FIG.
4 is coextensive with the edges 15 of the ironing board 11. The
marginal skirt 30 can be turned down and under the board 11. As
seen in FIG. 4 when the drawstring 18 is tightened, the welting 16
is snuggly held on the under surface of the ironing board 11.
Significantly, the absence of the padding 24 from the marginal
skirt 30 enables the cover 10 to be securely tightened on the
ironing board 11. Further, there is no bunching or gathering of the
padding 24 at the corners 32 and 34, nor at the tip 36, or at any
point of the perimeter of the ironing board 11. It is apparent that
if the padding 24 were coextensive with the layer of fabric 12,
such bunching would result and the attendant disadvantages
described above would be present. It should be noted that the
present construction avoids all of those disadvantages without
regard for the thickness of the padding 24.
Referring to FIG. 4, the padding 24 may be characterized as having
first and second major surfaces 40 and 42. If desired, at least one
of these surfaces may be nonplanar. One of the surfaces of the
padding 24 may be convex or concave as desired. Such a variation
from a planar surface may be advantageous in certain ironing
problems.
Still further, a number of other advantages result from the
arrangement described herein. A layer of heat reflective material
26, comprising pure aluminum flakes, inert mineral insulating
material, teflon or silicone, and other materials dispersed in
acrylic resin binders, may be bonded between the fabric layer 12
and the padding 24. Such an arrangement would have the advantage of
further increasing the effectiveness of the iron since heat loss
through the layer of fabric 12 and the padding 24 would be reduced.
In the alternative, the layer of fabric 12 may be formed from heat
reflective material.
Additionally, an iron support may be formed integrally with the
cover. As seen in FIG. 1, an aperture 44 is formed in the layer of
fabric 12. A heat resistant element 46 such as a piece of metal or
the like may be disposed within the aperture 44 and bonded to the
padding 24. The necessity for a separate iron support would be
obviated.
Still further, the layer of fabric 12 may be provided with a
plurality of apertures 48 spaced relatively close to each other.
The apertures 48 have the effect of roughening the surface on which
items to be ironed are placed thereby increasing the frictional
force thereon. This results in a lessening of the tendency of the
iron to push the items off of the ironing board 11.
The preferred method of making the ironing board cover involves the
use of a thermoplastic adhesive applied to one face of padding 24
by conventional applicator rollers or the like. The padding 24 may
be placed upon any suitable surface adapted to be reciprocated into
a press.
The fabric 12 is placed over the padding 24 and is positioned so
that the uniform width marginal skirt 30 is defined between the
outer peripheral edge of the padding 24 and the outer peripheral
edge of the fabric 12.
The tray or surface is reciprocated into a conventional press. The
top platen of the press (not shown) is heated to a temperature of
approximately between 300.degree.F to 450.degree.F with the
preferred temperature being 425.degree.F. Minimal pressure is
applied when the platen is brought into contact with the outer face
of the fabric 12. It is important that pressure be minimal in order
to avoid substantial compression of the foam padding 24. Only the
top 1/16 inch to 1/8 inch of the padding should be compressed so
that the desired thickness of the padding 24 will be maintained.
The exact pressure applied depends upon the foam padding 24 used
and may be easily visually determined by noting the pressure
required to effect the desired minimum compression of the padding
24. Excessive pressure will result in crushing of the foam padding
24 during the bonding and curing steps with the adhesive being
forced through the foam padding 24 and preventing the foam from
recovering its original shape thereby resulting in an unacceptable
ironing board cover 10.
The top platen is held in place from approximately 3-8 seconds
while the adhesive is cured with the optimum curing time being 5
seconds. No heat is applied through the bottom of the padding 24
since such heat would adversely affect the foam padding 24 during
bonding. The preferred adhesive will soften at approximately
200.degree.F to 250.degree.F although I have found that softening
of the adhesive does not cause delamination, rather, the quality of
the bond is increased. Most ironing is done with an iron heated to
approximately 150.degree.F to 300.degree.F although higher iron
temperatures are employed for certain fabrics. Wrinkles in the
cover 10 may be easily ironed out of the cover and a wrinkle free
cover 10 can be maintained. I have observed that there is no
deleterious effect upon the ironing board cover 10 as a result of
the use of a hot iron and the application of localized pressure
during ironing. I surmise that this is due to the fact that the
iron is not kept in one location for an inordinate length of time
and that the adhesive does not become highly fluid as a result of
the localized heat applied by the iron.
While the invention has been described with reference to certain
forms and embodiments thereof, it is apparent that many other forms
and embodiments will be obvious to those skilled in the art in view
of the foregoing description. Thus, the scope of the invention
should not be limited by the foregoing description but, rather,
only by the scope of the claims appended hereto.
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