Note: Descriptions are shown in the official language in which they were submitted.
1
NEEDLE-RESISTANT GLOVE AND MAT
TECHNICAL FIELD
[0001] The present disclosure generally relates to a needle-resistant glove
and mat, and methods
for fabricating thereof; and more particularly to an elastomeric cloth glove
and an elastomeric mat
having improved resistance against sharp elements/tips.
BACKGROUND
[0002] Protection from accidental punctures is needed in different industries,
medicine, law
enforcement, and in any occupation where sharp instruments are encountered and
where the
combination of flexibility and protection against needle-stick or puncture
wounds is needed.
[0003] Wearing protective gloves by the health care workers prevents contact
of potentially infectious
materials with the skin, especially for surgeons. Needle-stick injuries may
lead to potentially fatal dangers to
all healthcare workers. Thus, ideal surgical gloves and their constituting
layers need to offer protection
against mechanical aggressors, (e.g. needles, sharp bone fragments or other
surgical instruments);
while also providing barrier to blood borne pathogen hazards. Ideally, safety
gloves should provide
this protection, while still allowing the wearer to perform his or her job
without undue hindrance.
[0004] Accordingly, there exists a need for materials and gloves with improved
resistance against
needle, and other sharp elements; while providing adequate flexibility,
dexterity, tactility, and
comfort.
SUMMARY
[0005] This summary is intended to provide an overview of the subject matter
of the present
disclosure, and is not intended to identify essential elements or key elements
of the subject matter,
nor is it intended to be used to determine the scope of the claimed
implementations. Its sole purpose
is to present some concepts of one or more aspects in a simplified form as a
prelude to the more
detailed description that is presented later.
Date Recue/Date Received 2021-07-27
2
[0006] In one general aspect, the present disclosure describes an exemplary
glove that is resistant
to needle. Said exemplary glove may comprise a coated cloth glove; and at
least one elastomeric
glove coupled to the coated cloth glove, wherein surfaces and edges of said at
least one elastomeric
glove may be layered and fitted on an outer surface and an inner surface of
the coated cloth glove,
respectively.
[0007] The above aspect may include one or more of the following features. In
exemplary
embodiments, said at least one elastomeric glove may include: a first
elastomeric glove coupled to
the inner surface of the coated cloth glove through an outer surface of said
first elastomeric glove,
and a second elastomeric glove coupled to the outer surface of the coated
cloth glove through an
inner surface of said second elastomeric glove .
[0008] In some exemplary embodiments, the coated cloth glove may include a
cloth made from at
least one of wool, silk, and a combination thereof; and a coating on at least
one of an outer surface
and an inner surface of the cloth. Said cloth may comprise at least one of
wool fibers, silk fibers,
wool particles, silk particles, knitted wool, knitted silk, nonwoven wool,
nonwoven silk, and a
combination thereof. In an embodiment, the coated cloth glove may comprise the
cloth, and the
coating on the outer surface and the inner surface of the cloth
[0009] In exemplary embodiments, said coating may be made from a coating
composition
comprising silica particles, glutaraldehyde, and an organosilane; wherein, in
an exemplary
embodiment, the organosilane, the glutaraldehyde, and the silica particles may
constitute 1 to 5
wt.%, 0.2 to 3 wt.%, and 2 to 8 wt.% of the coating composition, respectively.
In an embodiment,
(3-Aminopropyl) trimethoxysilane (APTMS) may be selected as the organosilane.
In an
embodiment, said coating composition may comprise 2 to 3 wt.% of the APTMS,
0.2 to 1 wt.% of
the glutaraldehyde, and 4 to 6 wt.% of the silica particles.
[00010] In exemplary embodiments, the at least one elastomeric glove may be
made from a mixture
of a latex composition, and 0.5 to 50 wt. % of polyethylene particles. In an
embodiment, the mixture
may include 30 wt.% of the polyethylene particles dispersed within the latex
composition. In one
exemplary embodiment, the polyethylene particles may have a diameter of 100 gm
or less, and may
be selected from ultra-high molecular weight polyethylene particles (UHMPE).
[00011] In some exemplary embodiments, the latex composition may comprise a
latex including a
natural latex, or a synthetic latex. The synthetic latex, in different
embodiments, may include at least
one of polychloroprene, acrylic latex, vinyl acrylics, nitrile latex,
polyvinyl acetate, carboxylated
Date Recue/Date Received 2021-07-27
3
polyacrylonitrile butadiene, polyisoprene, styrene-isoprene block copolymers,
styrene-ethylene
butylene-styrene block copolymers, styrene-butadiene-styrene block copolymers,
polyurethane,
polyurea, vinyl chloride, and a blend thereof.
[00012] In exemplary embodiments, said latex composition may further include
at least one or a
mixture of a vulcanization agent, a surfactant, an antioxidant, and an
accelerator.
[00013] In an exemplary embodiment, said exemplary glove may be a surgical
glove, resistant to
needle. Another aspect of the present disclosure is related to an exemplary
needle-resistant
elastomeric mat. Said elastomeric mat may include a coated cloth, which may
comprise a cloth
made from the at least one of wool, silk, and the combination thereof; and the
coating coated onto at
least one horizontal surface of the cloth. In exemplary embodiments, said
cloth may include the at
least one of the wool fibers, the silk fibers, the wool particles, the silk
particles, the knitted wool, the
knitted silk, the nonwoven wool, the nonwoven silk, and the combination
thereof. The coating may
be made from the coating composition comprising the silica particles, the
glutaraldehyde, and the
organosilane. In exemplary embodiments, said coating composition may include 1
to 5 wt.% of the
organosilane, 0.2 to 3 wt.% of the glutaraldehyde, and 2 to 8 wt.% of the
silica particles. In an
embodiment, the APTMS may be used as the organosilane.
[00014] In an embodiment, said coating composition may comprise 2 to 3 wt.% of
the APTMS, 0.2
to 1 wt.% of the glutaraldehyde, and 4 to 6 wt.% of the silica particles.
[00015] In some exemplary embodiments, the elastomeric mat may further include
at least one
elastomeric layer coupled to at least one horizontal surface of the coated
cloth; wherein the at least
one elastomeric layer may be made from the mixture of the latex composition,
and 0.5 to 50 wt.% of
the polyethylene particles. The latex composition may include at least one of
the natural latex or the
synthetic latex.
[00016] In yet another aspect, the present disclosure describes an exemplary
method for
fabricating said exemplary needle-resistant coated mat. The exemplary method
may include:
obtaining the cloth made from the at least one of the wool fibers, the silk
fibers, the wool particles,
the silk particles, the knitted wool, the knitted silk, the nonwoven wool, the
nonwoven silk, and the
combination thereof; and fabricating the coated cloth by dipping said cloth in
a composition
containing 1 to 5 wt.% of the organosilane, 0.2 to 3 wt.% of the
glutaraldehyde, and 2 to 8 wt.% of
the silica particles. In an exemplary embodiment, said organosilane may be the
APTMS.
Date Recue/Date Received 2021-07-27
4
[00017] In exemplary embodiments, said method may further include coupling the
at least one
elastomeric layer to the coated cloth. The at least one elastomeric layer may
include the mixture of
the latex composition, and 0.5 to 50 wt.% of the polyethylene particles. In an
exemplary
embodiment, the at least one elastomeric layer may be coupled to the at least
one horizontal surface
of the coated cloth.
BRIEF DESCRIPTION OF THE DRAWINGS
[00018] The novel features which are believed to be characteristic of the
present disclosure, as to its
structure, organization, use and method of operation, together with further
objectives and advantages
thereof, will be better understood from the following drawings in which a
presently preferred
embodiment of the present disclosure will now be illustrated by way of
example. It is expressly
understood, however, that the drawings are for the purpose of illustration and
description only and
are not intended as a definition of the limits of the present disclosure.
Embodiments of the present
disclosure will now be described by way of example in association with the
accompanying drawings
in which:
[00019] FIG. 1A illustrates a schematic perspective view from a back side of
an exemplary glove,
resistant to needle, which comprises three gloves, and a schematic section
thereof, consistent with
one or more embodiments of the present disclosure;
[00020] FIG. 1B illustrates a schematic perspective view from a palm side of
the exemplary glove,
resistant to needle, which comprises three gloves, and a schematic section
thereof, consistent with
one or more embodiments of the present disclosure;
[00021] FIG. 2A illustrates a schematic perspective view from a back side of
an exemplary glove,
resistant to needle, which comprises two gloves, and a schematic section
thereof, consistent with one
or more embodiments of the present disclosure;
[00022] FIG. 2B illustrates a schematic perspective view from a palm side of
the exemplary glove,
resistant to needle, which comprises two gloves, and a schematic section
thereof, consistent with one
or more embodiments of the present disclosure;
[00023] FIG. 3A illustrates a schematic cross-sectional view of the glove
comprising three gloves,
in consistence with one or more embodiments of the present disclosure;
[00024] FIG. 3B illustrates a schematic cross-sectional view of the glove
comprising two gloves, in
consistence with one or more embodiments of the present disclosure;
Date Recue/Date Received 2021-07-27
5
[00025] FIG. 4 is a schematic flowchart of a method for fabricating a coated
cloth glove, in
consistence with one or more embodiments of the present disclosure;
[00026] FIG. 5 illustrates a schematic cross-sectional view of a coated cloth,
resistant to needle; in
consistence with one or more embodiments of the present disclosure;
[00027] FIG. 6 illustrates a schematic cross-sectional view of the elastomeric
mat, resistant to
needle; in consistence with one or more embodiments of the present disclosure;
[00028] FIG. 7 is a flowchart diagram of an exemplary method for fabricating
the coated cloth,
consistent with one or more embodiments of the present disclosure; and
[00029] FIG. 8 is a flowchart diagram of an exemplary method for fabricating
an elastomeric mat,
resistant to needle; consistent with one or more embodiments of the present
disclosure.
[00030] FIG. 9 shows scanning electron microscope (SEM) images of A) untreated
knitted natural
silk fabric (30X magnification), B) untreated wool felt (30X magnification),
C) knitted natural silk
fabric coated with glutaraldehyde, APTMS, and silica nanoparticles (1500X
magnification), D)
knitted natural silk fabric coated with glutaraldehyde, APTMS, and silica
nanoparticles (5000X
magnification), E) wool felt coated with glutaraldehyde, APTMS, and silica
nanoparticles (1500X
magnification), and F) wool felt coated with glutaraldehyde, APTMS, and silica
nanoparticles
(5000X magnification).
DE TAILED DESCRIPTION
[00031] The following detailed description is presented to enable a person
skilled in the art to make
and use the methods and devices disclosed in exemplary embodiments of the
present disclosure. For
purposes of explanation, specific nomenclature is set forth to provide a
thorough understanding of
the present disclosure. However, it will be apparent to one skilled in the art
that these specific details
are not required to practice the disclosed exemplary embodiments. Descriptions
of specific
exemplary embodiments are provided only as representative examples. Various
modifications to the
exemplary implementations will be readily apparent to one skilled in the art,
and the general
principles defined herein may be applied to other implementations and
applications without
departing from the scope of the present disclosure. The present disclosure is
not intended to be
limited to the implementations shown but is to be accorded the widest possible
scope consistent with
the principles and features disclosed herein.
Date Recue/Date Received 2021-07-27
6
[00032] It must be noted that, as used in this specification, the singular
forms "a," "an," and "the"
include plural referents unless the context clearly dictates otherwise.
[00033] As used herein, the terms "comprising," "including," "constituting,"
"containing,"
"characterized by," and grammatical equivalents thereof are inclusive or open-
ended terms that do
not exclude additional, unrecited elements or method steps.
[00034] Reference herein to "one embodiment", "an embodiment", "some
embodiments", "one or
more embodiments", "one exemplary embodiment", "an exemplary embodiment",
"some exemplary
embodiments", and "one or more exemplary embodiments" indicate that a
particular feature,
structure or characteristic described in connection or association with the
embodiment can be
included in at least one of such embodiments. However, the appearance of such
phrases in various
places in the present disclosure do not necessarily refer to a same embodiment
or embodiments.
[00035] The present disclosure describes an exemplary mat, exemplary glove,
and methods for
fabricating thereof. The exemplary glove and mats disclosed herein, provide an
improved resistance
against mechanical risks including, but not limited to needle, and any sharp
elements/tips/points
penetrating thereto. The aspects and embodiments disclosed herein, may
pertain/suit, but not limit,
to different applications and products including surgical gloves, disposable
gloves, work safety
gloves, dishwashing/kitchen gloves, condoms and the like
[00036] As to terminology, the term "durometer hardness", also cited as "shore
durometer", may
refer to a scale indicating level or amount of resistance to indentation. This
scale is a measure of
hardness of a material, typically of polymers such as elastomers and rubbers,
that is measured using
a device named "shore durometer".
[00037] As to terminology, the term "couple" and its derivatives may refer to
any direct or indirect
communication or association between two or more elements, whether or not
those elements are in
physical contact with one another.
[00038] As to terminology, the term "knitted" and "knitting" may refer to any
method for which a
cord(s) or thread(s) or strand(s) or cloth(s) can be assembled to create a
series of intertwined loops
or layers of construction including, but not limited to, knitting, crocheting,
looming, weaving,
stitching and the like.
[00039] As to terminology, the terms "felt", used herein, may refer to densely
mattered non-woven
fabrics that are produced from animal hair fibers, such as wool, as a result
of their inherent ability to
become entangled.
Date Recue/Date Received 2021-07-27
7
[00040] Referring now to the figures, FIG. 1A illustrates a schematic
perspective view from a back
side of an exemplary glove 100, resistant to needle, which comprises three
gloves and a schematic
section 101 thereof, consistent with one or more embodiments of the present
disclosure. In addition,
FIG.1B illustrates a schematic perspective view from a front palm side of the
exemplary glove 100,
resistant to needle, which comprises three gloves and a schematic section 102
thereof, consistent
with one or more embodiments of the present disclosure. According to FIG.1A
and FIG. 1B, in
consistence with exemplary embodiments of the present disclosure, the
exemplary glove 100 may
have a plurality of fingers (104, 106, 108, and 110), a thumb 112, a back
portion 114, a front palm
portion 116, and a cuff 118.
[00041] FIG. 2A illustrates a schematic perspective view from a back side of
an exemplary glove
200, resistant to needle, which comprises two gloves and a schematic section
201 thereof, consistent
with one or more embodiments of the present disclosure. In addition, FIG. 2B
illustrates a schematic
perspective view from a front palm side of the exemplary glove 200, resistant
to needle, which
comprises two gloves and a schematic section 202 thereof, consistent with one
or more
embodiments of the present disclosure. According to FIG.2A and FIG.2B, in
consistence with
exemplary embodiments of the present disclosure, the exemplary glove 200 may
also have a
plurality of fingers (204, 206, 208, and 210), a thumb 212, a back portion
214, a front palm portion
216, and a cuff 218.
[00042] Referring to FIGs. 1A, 1B, 2A, and 2B, consistent with one or more
embodiments, the
exemplary glove 100 and the exemplary glove 200 may include a coated cloth
glove 120 and at least
one elastomeric glove (122 and/or 124). FIG. 1A and FIG. 1B, show the
exemplary glove 100 which
may comprise the coated cloth glove 120 coupled to two elastomeric gloves (122
and 124) including
an inner elastomeric glove 122 and an outer elastomeric glove 124; wherein
surfaces and edges of
the inner elastomeric glove 122 and the outer elastomeric glove 124 may be
layered and fitted on an
inner surface 1201 and an outer surface 1202 of the coated cloth glove 120,
respectively. To be
specific, an outer surface 1222 of the inner elastomeric glove 122 may be
coupled to the inner
surface 1201 of the coated cloth glove 120; and an inner surface 1241 of the
outer elastomeric glove
124 may be coupled to the outer surface 1202 of the coated cloth glove 120.
Exemplary sections of
the coated cloth glove 120, the inner elastomeric glove 122, and the outer
elastomeric glove 124 are
schematically shown in the schematic sections 101 and 102. It is worth to note
that, said schematic
sections (101 and 102) are not intended to be specified, only, to the back
portion 114 and the palm
Date Recue/Date Received 2021-07-27
8
portion 116 of the exemplary glove 100; and may also refer to the plurality of
fingers (104, 106,
108, and 110), the thumb 112, and the cuff 118.
[00043] In contrast, FIG. 2A and FIG. 2B show an exemplary glove 200 which may
comprise the
coated cloth glove 120 coupled to one elastomeric glove including the outer
elastomeric glove 124;
wherein surfaces and edges of the outer elastomeric glove 124 may be layered
and fitted on the outer
surface 1202 of the coated cloth glove 120. In detail, the inner surface 1241
of the outer elastomeric
glove 124 may be coupled to the outer surface 1202 of the coated cloth glove
120. Exemplary
sections of the coated cloth glove 120 and the elastomeric outer glove 124 are
schematically
magnified in the schematic sections 201 and 202. It is worth to note that,
said schematic sections
201 and 202 are not intended to be specified, only, to the back portion 214
and the palm portion 216
of the exemplary glove 100; and may also refer to the plurality of fingers
(204, 206, 208, and 210),
the thumb 212, and the cuff 218.
[00044] FIG. 3A illustrates a schematic cross-sectional view 300 of the glove
100 comprising three
gloves, in consistence with one or more embodiments of the present disclosure.
Referring to FIG.
3A, and in consistence with one or more exemplary embodiments, the glove 100
may include the
coated cloth glove 120 coupled to two elastomeric gloves (122 and 124)
including the inner
elastomeric glove 122 and the outer elastomeric glove 124; wherein surfaces
and edges of the inner
elastomeric glove 122 and the outer elastomeric glove 124 may be layered and
fitted on the inner
surface 1201 and the outer surface 1202 of the coated cloth glove 120,
respectively. As illustrated in
FIG. 3A, skin of a wearer 303 may be in contact with the inner surface 1221 of
the inner elastomeric
glove 122.
[00045] FIG. 3B illustrates a schematic cross-sectional view 302 of the glove
100 comprising two
gloves, in consistence with one or more embodiments of the present disclosure.
Referring to FIG.
3B, and in consistence with one or more exemplary embodiments, the glove 100
may include the
coated cloth glove 120 coupled to the outer elastomeric glove 124; wherein
surfaces and edges of
the outer elastomeric glove 124 may be layered and fitted on the outer surface
1202 of the coated
cloth glove 120. As illustrated in FIGs. 3A, skin of the wearer 303 may be in
contact with the inner
surface 1201 of the coated cloth glove 120.
[00046] According to different embodiments of the present disclosure, and in
accordance with FIGs.
I (A, B), 2 (A, B), and 3 (A, B), the glove 100 may be fabricated by different
methods known to
those skilled in art. In one embodiment, the coated cloth glove 120, the inner
elastomeric glove 122,
Date Recue/Date Received 2021-07-27
9
and the outer elastomeric glove 124 may be fabricated separately, followed by
attaching the inner
surface 1201 of the coated cloth and the outer surface 1202 of the coated
cloth glove 120 to the outer
surface 1202 of the inner elastomeric glove 122 and the inner surface 1241 of
the outer elastomeric
glove 124, respectively, using a bonding means (such as an adhesive, a paste,
a binder, and the like).
In an exemplary embodiment, the outer elastomeric glove 124 may be coated onto
the outer surface
1202 of the coated cloth glove 120 by dipping or by a coating method. A wide
variety of coating
methods are known in the art; in one or more embodiments, said coating method
may include, but
not limit to, direct coating, foamed and crushed foam coating, transfer
coating, hot melt extrusion
coating, calendar coating, rotary screen coating, spray coating, curtain
coating, slot die or extrusion
coating, mayer rod coating, kiss roll coating, gravure coating, and reverse
roll coating.
[00047] In one or more embodiments, the inner elastomeric glove 122 and the
outer elastomeric
glove 124 may be made from a mixture of a latex composition, and polyethylene
particles. In one or
more embodiments, the polyethylene particles may constitute 0.5 to 50 wt.% of
the mixture. More
particularly, the polyethylene particles may constitute 20 to 40 wt.% of the
mixture. In one
exemplary embodiment, the inner elastomeric glove 122 and the outer
elastomeric glove 124 may be
made from a mixture of the latex composition, and the polyethylene particles;
wherein the
polyethylene particles may constitute 20 to 40 wt.%, more particularly 25 to
35 wt.%, of the
mixture. Said latex composition, according to one or more embodiments, may
include a natural latex
or a synthetic latex; wherein the synthetic latex may be selected from the
group including
polychloroprene, acrylic latex, vinyl acrylics, nitrile latex, polyvinyl
acetate, carboxylated
polyacrylonitrile butadiene, polyisoprene, styrene-isoprene block copolymers,
styrene-ethylene
butylene-styrene block copolymers, styrene-butadiene-styrene block copolymers,
polyurethane,
polyurea, vinyl chloride, and the blend thereof. In one particular embodiment,
the latex composition
may be prepared using the natural latex. Said latex composition may further
include at least one or a
mixture of a vulcanization agent, a surfactant, an antioxidant, an
accelerator, and other known
substances used for production of gloves.
[00048] In exemplary embodiments, the at least one elastomeric glove including
the inner
elastomeric glove 122 and the outer elastomeric glove 124 may be configured to
provide flexibility
to the glove (100 and 200), and further improve its durometer hardness. In
exemplary embodiments,
the at least one elastomeric glove including the inner elastomeric glove 122
and the outer
elastomeric glove 124, may be prepared with different strength, durometer
hardness, flexibility, and
Date Recue/Date Received 2021-07-27
10
diameter for different applications. For example, the strength, the durometer
hardness, the
flexibility, and the diameter may be adjusted to obtain enough flexibility,
strength, and resistance
against needle for sensitive applications, such as surgeon gloves. In an
exemplary embodiment, the
inner elastomeric glove 122 and the outer elastomeric glove 124 may have a
thickness of at least
0.03 mm; however, as discussed, the thickness may be adjusted in accordance
with the application.
[00049] Referring again to FIGs. 3A and 3B, and in consistence with one or
more embodiments, the
coated cloth glove 120 may include a cloth 304, that may be fabricated from at
least one of wool,
and silk, and a combination thereof; and a coating 306 on an outer surface
3041 and an inner surface
3042 of said cloth 304. In exemplary embodiments, said cloth 304 may comprise
the at least one of
the wool fibers, the silk fibers, the wool particles, the silk particles, the
knitted wool, the knitted silk,
the nonwoven wool, the nonwoven silk, and the combination thereof. In yet
another embodiment,
only the outer surface 3041 of the cloth 304 may be coated with said coating
306. The coating 306,
shown in FIGs. 3A and 3B, may be made from a coating composition comprising
silica particles,
glutaraldehyde, and an organosilane. In one or more exemplary embodiments, the
silica particles
may constitute 2 to 8 wt.%, more particularly 4 to 6 wt.% of the coating
composition; the
glutaraldehyde may constitute 0.2 to 3 wt.%, more particularly 0.2 to 1 wt.%,
of the coating
composition; and the organosilane may constitute 1 to 5 wt.%, more
particularly 2 to 3 wt.%, of the
coating composition. In a particular embodiment, said silica particles may
have a diameter of at least
nm; and the organosilane may be APTMS. In some exemplary embodiments, the
coated cloth
glove 120 may have a thickness of at least 0.006 inch; the thickness of the
coated cloth glove 120
may be adjusted to comply with different applications, such as surgeon gloves,
safety work gloves,
dishwashing/kitchen gloves and the like. In an exemplary embodiment, the
coating 306 may be
formed onto the outer surface 3041 of the cloth 304 by dipping or by a coating
method. A wide
variety of coating methods are known in the art; in one or more embodiments,
said coating method
may include, but not limit to, direct coating, foamed and crushed foam
coating, transfer coating, hot
melt extrusion coating, calendar coating, rotary screen coating, spray
coating, curtain coating, slot
die or extrusion coating, mayer rod coating, kiss roll coating, gravure
coating, reverse roll coating,
and other known coating methods not mentioned herein.
[00050] In an exemplary embodiment, said cloth 304 may be the knitted wool or
the knitted silk
coated with the coating 306, that is made from said coating composition.
Date Recue/Date Received 2021-07-27
II
[00051] FIG. 4 is a flowchart diagram of a method 400 for fabricating the
coated cloth glove 120, in
consistence with one or more embodiments of the present disclosure. In
exemplary embodiments,
the method 400 may include: preparing the cloth 304 made from the at least one
of wool, and silk,
and the combination thereof (step 402); obtaining a cloth glove by forming or
knitting the cloth 304
in shape of a glove having a plurality of fingers, a thumb, a palm portion, a
back portion, and a cuff
(step 404); and obtaining the coated cloth glove 120 by dipping said cloth
glove 120 in the coating
composition (step 406).
[00052] Referring to the step 402 of the FIG.4, and according to one or more
exemplary
embodiments, the cloth 304 may include the knitted/woven wool, the wool felt,
the knitted/woven
silk, or a silk felt. In another embodiment, the cloth 304 may be prepared
using silk fibers, and wool
fibers; which may be integrated/mattered by an attachment means (such as an
adhesive, a paste, a
binder, and a combination thereof), pressure, dispersion in a matrix,
electrospinning, or by any
means/methods known in the art, to form the cloth 304.
[00053] Referring to the step 406 of the FIG. 4, and according to one or more
exemplary
embodiments, the coated cloth glove 120 may also be obtained by
coating/layering the coating
composition using said coating methods. The coating methods may include, but
not limit to, direct
coating, foamed and crushed foam coating, transfer coating, hot melt extrusion
coating, calendar
coating, rotary screen coating, spray coating, curtain coating, slot die or
extrusion coating, mayer
rod coating, kiss roll coating, gravure coating, reverse roll coating, and
other known coating
methods not mentioned herein.
[00054] In one or more exemplary embodiments, the coated cloth glove 120 may
further be coupled
to the at least one elastomeric glove (122 and/or 124). To obtain the glove
100 comprising the
coated cloth glove coupled to the inner elastomeric glove 122 and the outer
elastomeric glove 124,
as shown in FIGs. 1A and 1B: the inner elastomeric glove 122 which is in shape
of a glove (having a
plurality of fingers, a thumb, a front palm portion, and a back portion) may
be attached to the coated
cloth glove 120 by said bonding means; and the outer elastomeric glove 124 may
be formed/layered
or attached/coupled onto the coated cloth glove 120 by using said bonding
means, or by dipping the
coated cloth glove 120 into the mixture of the latex composition, and the
polyethylene particles or
by coating said mixture onto the coated cloth glove 120 using said coating
methods.
[00055] To obtain the glove 200 comprising the coated cloth glove 120 and the
outer elastomeric
glove 124, as shown in FIGs. 2A and 2B: the outer elastomeric glove 124 may be
formed/layered or
Date Recue/Date Received 2021-07-27
12
attached/coupled onto the coated cloth glove 120 by using said bonding means,
or by dipping the
coated cloth glove 120 into the mixture of the latex composition, and the
polyethylene particles or
by coating said mixture onto the coated cloth glove 120 using said coating
methods.
[00056] In one or more embodiments of the present disclosure, structure of a
coated cloth and an
elastomeric mat, that are resistant to needle; and method for fabricating
thereof are disclosed. FIG. 5
illustrates a schematic cross-sectional view of the coated cloth 500,
resistant to needle; consistent
with one or more embodiments of the present disclosure. Referring to FIG. 5
and in accordance with
one exemplary embodiment, the coated cloth 500 may include the cloth 304, made
from the at least
one of wool, silk, and the combination thereof. In exemplary embodiments, said
cloth may comprise
the at least one of the wool fibers, the silk fibers, the wool particles, the
silk particles, the knitted
wool, the knitted silk, the nonwoven wool, the nonwoven silk, and the
combination thereof. In
exemplary embodiments, at least one horizontal surface 502 of the cloth 304
may be coated with the
coating 306, which is made from the coating composition comprising the silica
particles, the
glutaraldehyde, and the organosilane. In one or more exemplary embodiments,
the silica particles
may constitute 2 to 8 wt.%, more particularly 4 to 6 wt.% of the coating
composition; the
glutaraldehyde may constitute 0.2 to 3 wt.%, more particularly 0.2 to 1 wt.%,
of the coating
composition; and the organosilane may constitute 1 to 5 wt.%, more
particularly 2 to 3 wt.%, of the
coating composition. In a particular embodiment, said silica particles may
have a diameter of at least
nm; and the organosilane may be the APTMS.
[00057] FIG. 6 illustrates a schematic cross-sectional view of the elastomeric
mat 600, resistant to
needle; in consistence with one or more embodiments of the present disclosure.
The elastomeric mat
600 may comprise the coated cloth 500 and at least one elastomeric layer 602,
two elastomeric
layers in an embodiment, coupled to/layered onto/coated onto at least one
horizontal surface 604 of
the coated cloth 500. Similar to the elastomeric inner glove 122 and the
elastomeric outer glove 124,
the at least one elastomeric layer 602 described herein, may be made from the
mixture of the latex
composition, and the polyethylene particles. In an embodiment, the
polyethylene particles may
constitute 20 to 40 wt.%, more particularly 25 to 35 wt.%, of the mixture.
Said latex composition,
according to one or more embodiments, may include the natural latex or the
synthetic latex; wherein
the synthetic latex may be selected from the group including polychloroprene,
acrylic latex, vinyl
acrylics, nitrile latex, polyvinyl acetate, carboxylated polyacrylonitrile
butadiene, polyisoprene,
styrene-isoprene block copolymers, styrene-ethylene butylene-styrene block
copolymers, styrene-
Date Recue/Date Received 2021-07-27
13
butadiene-styrene block copolymers, polyurethane, polyurea, vinyl chloride,
and the blend thereof.
In one particular embodiment, the latex composition may be prepared using the
natural latex. Said
latex composition may further include the at least one or the mixture of the
vulcanization agent, the
surfactant, the antioxidant, the accelerator, and the other known substances
used for production of
the gloves. As mentioned, the at least one elastomeric layer 602 may be
coupled to/layered
onto/coated onto the at least one horizontal surface 604 of the coated cloth
glove 500. The phrases
or terms "coupled to", "layered onto", and "coated onto" used herein, may mean
that the at least
one elastomeric layer 602 is attached or coupled or layered by the bonding
means (such as an
adhesive), dipping, and the coating methods. Said coating methods, as
mentioned earlier in this
disclosure, may include, but not limit to, direct coating, foamed and crushed
foam coating, transfer
coating, hot melt extrusion coating, calendar coating, rotary screen coating,
spray coating, curtain
coating, slot die or extrusion coating, mayer rod coating, kiss roll coating,
gravure coating, reverse
roll coating, and the other known coating methods not mentioned here.
[00058] FIG. 7 is a flowchart diagram of an exemplary method 700 for
fabricating the coated
cloth 500, consistent with one or more embodiments of the present disclosure.
The exemplary
method 700 may include: obtaining the cloth 304 made from the at least one of
wool, silk, and the
combination thereof (step 702); and obtaining the coated cloth 500 by coating
the at least one
horizontal surface 502 of the cloth 304 with the coating composition, which
may comprise the
organosilane, the glutaraldehyde, and the silica particles (step 604).
[00059] Referring to the step 702 of the FIG. 7, and according to exemplary
embodiments, the cloth
may comprise the at least one of the wool fibers, the silk fibers, the wool
particles, the silk particles,
the knitted wool, the nonwoven wool, the nonwoven silk, the knitted silk, and
the combination
thereof. In one or more exemplary embodiments, the cloth 304 may include the
knitted/woven wool,
or the knitted/woven silk which may comprise the wool fibers, or the silk
fibers, respectively. In
another embodiment, the cloth 304 may be prepared using the silk fibers, and
the wool fibers;
which may be integrated by the attachment means (such as the adhesive, the
paste, the binder, and
the combination thereof), pressure, dispersion in a matrix, or any of the
means/methods known in
the art, to form the cloth 304.
[00060] Referring to the step 704 of the FIG. 7, in one or more exemplary
embodiments, the silica
particles may constitute 2 to 8 wt.%, more particularly 4 to 6 wt.% of the
coating composition; the
glutaraldehyde may constitute 0.2 to 3 wt.%, more particularly 0.2 to 1 wt.%,
of the coating
Date Recue/Date Received 2021-07-27
14
composition; and the organosilane may constitute 1 to 5 wt.%, more
particularly 2 to 3 wt.%, of the
coating composition. In a particular embodiment, said silica particles may
have the diameter of at
least 10 nm; and the organosilane may be the APTMS. Said coating composition
may be coated onto
the at least one horizontal surface 502 of the cloth 304 by dipping or by the
coating methods,
discussed herein.
[00061] FIG. 8 is a flowchart diagram of an exemplary method 800 for
fabricating the elastomeric
mat 600, resistant to needle; consistent with one or more embodiments of the
present disclosure. The
exemplary method 800 may include fabricating the coated cloth 500 (step 802);
and obtaining the
elastomeric mat 600 by coupling the at least one elastomeric layer 602 to the
at least one horizontal
surface 604 of the coated cloth 500 (step 804).
[00062] Referring to the FIG. 8, the step 802 may include fabricating the
coated cloth 500. As
shown in the flowchart diagram of the FIG. 8, the step 802 may include the
step 702 and the step
704 of the exemplary process 700.
[00063] Referring to the step 804 of the FIG. 8, in an embodiment, the at
least one elastomeric layer
602 may be prepared from the mixture of the latex composition, and 0.5 to 50
wt.% of the
polyethylene particles. In exemplary embodiments, the polyethylene particles
may constitute 20 to
40 wt.%, more particularly 25 to 35 wt.%, of the mixture. Said latex
composition, according to one
or more embodiments, may include the natural latex or the synthetic latex;
wherein the synthetic
latex may be selected from the group including polychloroprene, acrylic latex,
vinyl acrylics, nitrile
latex, polyvinyl acetate, carboxylated polyacrylonitrile butadiene,
polyisoprene, styrene-isoprene
block copolymers, styrene-ethylene butylene-styrene block copolymers, styrene-
butadiene-styrene
block copolymers, polyurethane, polyurea, vinyl chloride, and the blend
thereof.
[00064] Referring again to the step 804, and according to the exemplary
embodiments, coupling the
at least one elastomeric layer 602 to the at least one horizontal surface 604
of the coated cloth 500
may include: coupling the at least one elastomeric layer 602 to the at least
one horizontal surface
604 of the coated cloth 500 by dipping the coated cloth 500 in the mixture of
the latex composition,
and 0.5 to 50 wt.% of the polyethylene particles; and/or by coating/layering
the mixture of the latex
composition, and 0.5 to 50 wt.% of the polyethylene particles onto the coated
cloth 500 by the
coating methods, mentioned earlier in the present disclosure.
[00065] As discussed in the present disclosure, the latex composition may
include the vulcanization
agent. In exemplary embodiments, the vulcanization agent may include, but not
limit to, Sulfur,
Date Recue/Date Received 2021-07-27
15
Sulfur Monochloride, Tellurium, Selenium, Thiuram accelerators, Polysulphide
polymers, p-
Quinonedioximes, Metallic Oxides, Organic Peroxides, Di-isocyanates, other
known vulcanization
agents in the art, and a combination thereof.
[00066] As discussed in the present disclosure, the latex composition may
include the accelerator.
In exemplary embodiments, the accelerator may include, but not limit to,
Hexamethylene
Tetramine(HMT), Diphenyl Guanidine(DPG), Heptaldehyde-Aniline condensation
Product (BA), N,
N' -Di orthotolyl Guanidine (DOTG),
2- Mercaptobenzothiazole(MBT), 2-2' -
Dithiobis(benzothiazole)(MBTS), Zinc -2-m erc aptob enzothi azole(ZMBT),
Zinc-0,0-di-N-
phosphorodithioate(ZBDP), N-Cyclohexy1-2-benzothiazole sulfenamide (CBS), N-
tert-buty1-2-
benzothi azole sulfenamide (TBBS), 2 -(4-M orpholin othi o)-b enzothi azol
e(MB S), N,N' -di cycl ohexyl-
2-benzothiazole sulfenamide (DCBS), Ethylene Thiourea(ETU), Di-pentamethylene
Thiourea
(DPTU), Dibutyl Thiourea(DBTU), Tetramethylthiuram Monosulfide(TMTM),
Tetramethylthiuram
Disulfide(TMTD), Dipentamethylenethiuram tetrasulfide(DPTT),
Tetrabenzylthiuram Disulfide
(TBzTD), Zinc dimethyldithiocarbamate(ZDMC), Zinc diethyldithiocarbamate
(ZDEC), Zinc
dibutyldithiocarbamate (ZDBC), Zinc dibenzyldithiocarbamate(ZDBC), Zinc-
Isopropyl
Xanthate(ZIX), other known accelerators in the art, and a mixture thereof.
[00067] As discussed in the present disclosure, the latex composition may
include the antioxidant.
In exemplary embodiments, the antioxidant may include, but not limit to, Para
Phenylenediamines
(PPD's), Trimethyl-dihydroquinolines (TMQs), Phenolic antioxidants, Alkylated
Diphenylamines
(DPAs), Aromatic Phosphites, Diphenylamine -Ketone Condensates, other known
accelerators in
the art, and a mixture thereof.
[00068] As discussed in the present disclosure, the latex composition may
include the surfactant. In
exemplary embodiments, the surfactant may include, but not limit to, Anionic
surfactants, Cationic
Surfactants, Zwitter ionic Surfactants, Non-ionic Surfactants, and a mixture
thereof.
[00069] In exemplary embodiments, the latex composition may be prepared using
an aqueous
solvent, or an organic solvent.
[00070] Unless otherwise stated, all measurements, values, ratings, positions,
magnitudes, sizes, and
other specifications that are set forth in this specification, are
approximate, not exact. They are
intended to have a reasonable range that is consistent with the functions to
which they relate and
with what is customary in the art to which they pertain.
Date Recue/Date Received 2021-07-27
16
[00071] It will be understood that the terms and expressions used herein have
the ordinary meaning
as is accorded to such terms and expressions with respect to their
corresponding respective areas of
inquiry and study, except where specific meanings have otherwise been set
forth herein. Relational
terms such as "first" and "second" and the like may be used solely to
distinguish one entity or action
from another without necessarily requiring or implying any actual such
relationship or order
between such entities or actions. An element proceeded by "a" or "an" does
not, without further
constraints, preclude the existence of additional identical elements in the
process, method, article, or
apparatus that comprises the element.
[00072] While various implementations have been described, the description is
intended to be
exemplary, rather than limiting and it will be apparent to those of ordinary
skill in the art that many
more implementations are possible that are within the scope of the
implementations. Although many
possible combinations of features are shown in the accompanying figures and
discussed in this
detailed description, many other combinations of the disclosed features are
possible. Any feature of
any implementation may be used in combination with or substituted for any
other feature or element
in any other implementation unless specifically restricted. Therefore, it will
be understood that any
of the features shown and/or discussed in the present disclosure may be
implemented together in any
suitable combination.
EXAMPLES
EXAMPLE 1: Fabrication of a coated wool glove and a coated wool mat
[00073] In one exemplary embodiment, the coated wool mat was fabricated by
coating a wool
fabric or textile, prepared by knitting or weaving wool fibers, or felt with
the coating composition.
To prepare the coating composition, in one embodiment, 0.4 g of glutaraldehyde
50%, 4.4 g of silica
(SiO2, 11-13 nm) nanoparticles, and 2 ml of the APTMS were added to 100 ml of
ethanol 95%. The
prepared suspension was then mixed and homogenized for 3 h at 15 C, using an
ultrasonic
homogenizer. The wool fabric or textile, and the wool felt were initially
sewed in shape of a glove
having a thumb, fingers, a palm portion, and a back portion. The created wool
gloves were,
subsequently, placed or dipped into a stable dispersion of the coating
composition; after 24 h, the
coated wool gloves were air dried.
EXAMPLE 2: Fabrication of a coated silk glove and a coated silk mat
[00074] In one exemplary embodiment, the coated silk mat was fabricated by
coating a natural silk
fabric or textile, prepared by knitting or weaving silk fibers, or felt with
the coating composition. To
Date Recue/Date Received 2021-07-27
17
prepare the coating composition, in one embodiment, 0.4 g of glutaraldehyde
50%, 4.4 g of
nanosilica particles (SiO2; 11-13 nm), and 2 ml of the APTMS were added to 100
ml of ethanol
95%. The prepared suspension was then mixed and homogenized for 3 h at 15 C,
using an
ultrasonic homogenizer. The natural silk fabric or textile was initially sewed
in shape of a glove
having a thumb, fingers, a palm portion, and a back portion. The created
natural silk gloves were,
subsequently, placed or dipped into a stable dispersion of the coating
composition; after 24 h, the
coated silk gloves were air dried.
[00075] FIG. 9 shows scanning electron microscope (SEM) images of A) untreated
knitted natural
silk fabric (30X magnification), B) untreated wool felt (30X magnification),
C) knitted natural silk
fabric coated with the glutaraldehyde, the APTMS, and the silica particles
(1500X magnification),
D) knitted natural silk fabric coated with the glutaraldehyde, the APTMS, and
the silica particles
(5000X magnification), E) wool felt coated with the glutaraldehyde, the APTMS,
and the silica
particles (1500X magnification), and F) wool felt coated with the
glutaraldehyde, the APTMS, and
the silica particles (5000X magnification).
[00076] Resistance of the coated natural silk fabric and the coated wool
fabric to needle was
evaluated. According to the obtained results, a 13x6.5 cm layer of the coated
knitted natural silk (93
g/m2) resisted against a 27 gauge syringe needle attached to weights up to
31.6 g, which were
released onto it. In comparison, the same size of the coated wool felt (690
g/m2) was resistant to a 23
gauge syringe needle attached to weights up to 300 g.
EXAMPLE 3: Fabrication of the inner elastomeric glove and the outer
elastomeric glove
[00077] As discussed herein, according to an embodiment, the inner elastomeric
glove and the outer
elastomeric glove may comprise the mixture of the latex composition, and 0.5
to 50 wt.% of
polyethylene particles. To prepare the latex composition, a latex containing
about 60% total solid
was used; in one embodiment, a latex composition comprising 100 phr of said
60% natural rubber
latex, 0.2 phr of 10% potassium hydroxide solution, 0.4 phr of a 50%
antioxidant emulsion, 0.2 phr
of 50% zinc oxide dispersion, 0.5 phr of 50% sulphur dispersion, 0.4 phr of
50% ZDBC dispersion,
and 1 phr of 50% ZMBT dispersion was prepared. Ultra high molecular weight
polyethylene
(UHMPE) was added to the prepared solution with a weight percent of 10%.
[00078] The inner elastomeric glove and the outer elastomeric glove were
formed separately, by
dipping glove mold(s) into a coagulant solution (20% calcium nitrate solution
in methanol) . Once
Date Recue/Date Received 2021-07-27
18
removed from the coagulant solution, the mold was allowed to dry for several
minutes. The mold
was then dipped into the latex solution containing 10 wt.% of the UHMPE, using
standard
techniques. Once removed, the glove was allowed to dry at 20 to 27 C for
several minutes.
Afterwards, the glove was cured at about 100 C for about 20 min. The glove
was then removed
from the mold and analyzed for various physical characteristics.
[00079] To obtain a glove with a predetermined thickness, several dipping and
drying steps may be
required.
Date Recue/Date Received 2021-07-27
