U.S. patent application number 13/917286 was filed with the patent office on 2013-12-19 for treated non-woven fabric comprising functional additive and a method of preparing a treated non-woven fabric.
The applicant listed for this patent is BASF CORPORATION. Invention is credited to David C. ANTONUCCIO, Simone BRIGHT, Manasi CHAVAN, Clifford A. MILOW, Samir F. NAGGIAR, Colleen M. ROCAFORT, Ashish TANEJA.
Application Number | 20130337710 13/917286 |
Document ID | / |
Family ID | 49756318 |
Filed Date | 2013-12-19 |
United States Patent
Application |
20130337710 |
Kind Code |
A1 |
ROCAFORT; Colleen M. ; et
al. |
December 19, 2013 |
TREATED NON-WOVEN FABRIC COMPRISING FUNCTIONAL ADDITIVE AND A
METHOD OF PREPARING A TREATED NON-WOVEN FABRIC
Abstract
Provided is a treated non-woven fabric having an improved
tactile property. Also provided are products comprising the treated
non-woven fabrics. Methods of preparing the treated non-woven
fabrics are provided.
Inventors: |
ROCAFORT; Colleen M.;
(Ocala, FL) ; NAGGIAR; Samir F.; (Plainsboro,
NJ) ; MILOW; Clifford A.; (Massapequa, NY) ;
CHAVAN; Manasi; (Stony Brook, NY) ; TANEJA;
Ashish; (Ann Arbor, MI) ; BRIGHT; Simone;
(Detroit, MI) ; ANTONUCCIO; David C.; (Indian
Trail, NC) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
BASF CORPORATION |
FLORHAM PARK |
NJ |
US |
|
|
Family ID: |
49756318 |
Appl. No.: |
13/917286 |
Filed: |
June 13, 2013 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
61659879 |
Jun 14, 2012 |
|
|
|
Current U.S.
Class: |
442/102 |
Current CPC
Class: |
D06M 15/00 20130101;
Y10T 442/2352 20150401; D04H 1/4326 20130101; D04H 13/00 20130101;
D04H 1/4282 20130101 |
Class at
Publication: |
442/102 |
International
Class: |
D04H 13/00 20060101
D04H013/00 |
Claims
1. A treated non-woven fabric having an improved tactile property,
comprising a non-woven fabric comprising a functional additive in a
suitable amount to improve a tactile property, wherein the
functional additive is selected from the group consisting of
Additive A, Additive B, Additive C, Additive D, Additive E,
Additive F, Additive G, Additive H (as each is described in columns
2 and 3 of Table 1); a blend of Additives G and F ("Additive BA"),
a blend of Additives F and B ("Additive BB") and a blend of
Additives F and H ("Additive BC").
2. The treated non-woven fabric of claim 1, wherein the non-woven
fabric comprises a plastic selected from the group consisting of
polyester, polyamide, and polyolefin.
3. The treated non-woven fabric of claim 2, wherein the non-woven
fabric comprises 1) a polyolefin selected from the group consisting
of polypropylene and polyethylene; or 2) a polyester and the
polyester is polylactide.
4. The treated non-woven fabric of claim 1, wherein the functional
additive is present substantially on the surface of the fabric and
optionally in voids present on the surface of the fabric.
5. The treated non-woven fabric of claim 1, wherein the fabric is
partially or fully impregnated with the functional additive.
6. The non-woven fabric of claim 1, wherein the functional additive
is Additive A and the non-woven fabric comprises: i) about 0.007 to
about 0.054 g Additive A per square meter non-woven fabric; or ii)
about 0.05 to about 0.040 wt. % Additive A (relative to dry
untreated fabric weight).
7. The non-woven fabric of claim 1, wherein the functional additive
is Additive B and the non-woven fabric comprises: i) about 0.095 to
about 0.135 g Additive B per square meter non-woven fabric; or ii)
about 0.70 to about 1.0 wt. % Additive B (relative to dry untreated
fabric weight).
8. The non-woven fabric of claim 1, wherein the functional additive
is Additive C and the non-woven fabric comprises: i) about 0.068 to
about 0.135 g Additive C per square meter non-woven fabric; or ii)
about 0.50 to about 1.0 wt. % Additive C (relative to dry untreated
fabric weight).
9. The non-woven fabric of claim 1, wherein the functional additive
is Additive D and the non-woven fabric comprises: i) about 0.081 to
about 0.135 g Additive D per square meter non-woven fabric; or ii)
about 0.60 to about 1.0 wt. % Additive D (relative to dry untreated
fabric weight).
10. The non-woven fabric of claim 1, wherein the functional
additive is Additive E and the non-woven fabric comprises: i) about
0.081 to about 0.135 g Additive E per square meter non-woven
fabric; or ii) about 0.60 to about 1.0 wt. % Additive E (relative
to dry untreated fabric weight).
11. The non-woven fabric of claim 1, wherein the functional
additive is Additive F and the non-woven fabric comprises: i) about
0.203 to about 0.324 g Additive F per square meter non-woven
fabric; or ii) about 1.5 to about 2.4 wt. % Additive F (relative to
dry untreated fabric weight).
12. The non-woven fabric of claim 1, wherein the functional
additive is Additive G and the non-woven fabric comprises: i) about
0.3513 to about 0.378 g Additive G per square meter non-woven
fabric; or ii) about 2.6 to about 2.84 wt. % Additive G (relative
to dry untreated fabric weight).
13. The non-woven fabric of claim 1, wherein the functional
additive is Additive H and the non-woven fabric comprises: i) about
0.230 to about 0.270 g Additive H per square meter non-woven
fabric; or ii) about 1.7 to about 2.0 wt. % Additive H (relative to
dry untreated fabric weight).
14. The non-woven fabric of claim 1, wherein the functional
additive is Blend BA, wherein the ratio of Additive G to Additive F
is about 1:1.
15. The non-woven fabric of claim 1, wherein the functional
additive is Blend BB, wherein the ratio of Additive F to Additive B
is about 10:3.
16. The non-woven fabric of claim 1, wherein the functional
additive is Blend BC, wherein the ratio of Additive F to Additive H
is about 1:1.
17. A non-woven product for use in contacting skin, the product
comprising a non-woven fabric to contact skin, wherein the
non-woven fabric is the treated non-woven fabric of claim 1.
18. A method for preparing a treated non-woven fabric having an
improved tactile property, the method comprising: contacting a
surface of a non-woven fabric with an aqueous surface modifying
composition comprising functional additive, and drying the
contacted surface to produce the treated non-woven fabric, wherein
the functional additive is selected from the group consisting of
Additive A, Additive B, Additive C, Additive D, Additive E,
Additive F, Additive G, and Additive H, (as each is described in
columns 2 and 3 of Table 1), a blend of Additives G and F
("Additive BA"), a blend of Additives F and B ("Additive BB") and a
blend of Additives F and H ("Additive BC"); and wherein the treated
non-woven fabric comprises the functional additive in a suitable
amount to improve a tactile property.
19. The method of claim 18, wherein the step of contacting the
surface of the non-woven fabric comprises spraying the surface with
the aqueous surface modifying composition comprising functional
additive.
20. The method of claim 18, wherein the non-woven fabric comprises
a plastic selected from the group consisting of polyester,
polyamide, and polyolefin.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The benefit of the filing date of U.S. Provisional Patent
Application No. 61/659,879, filed Jun. 14, 2012 is hereby claimed.
The entire disclosure of the aforesaid application is incorporated
herein in its entirety by reference.
BACKGROUND
[0002] In the discussion of the background that follows, reference
is made to certain structures and/or methods. However, the
following references should not be construed as an admission that
these structures and/or methods constitute prior art. Applicants
expressly reserve the right to demonstrate that such structures
and/or methods do not qualify as prior art.
[0003] Products comprising a non-woven fabric or material intended
to contact skin are well known in the art. Such products include
absorbent products such as diapers, adult incontinence pads or
briefs, feminine hygiene products (e.g., sanitary napkins),
bandages, and the like. Personal care and Household wipes are also
typically made of non-woven fabric. Prolonged skin contact with
non-woven fabrics may result in discomfort due for instance to
irritation by contact with the non-woven fabric.
[0004] There is an on-going unmet need in the art for products that
include a non-woven surface intended to contact skin, such as
wipes, diapers, adult incontinence products, and feminine hygiene
products, where the non-woven surface has an improved tactile
property. The present disclosure addresses this need.
SUMMARY
[0005] The following summary is not an extensive overview. It is
intended to neither identify key or critical elements of the
various embodiments, nor delineate their scope.
[0006] Provided is a treated non-woven fabric having an improved
tactile property. The treated non-woven fabric comprises a
non-woven fabric comprising a functional additive in a suitable
amount to improve a tactile property. Also provided is a non-woven
product for use in contacting skin, wherein the product comprises a
non-woven fabric to contact skin. The non-woven fabric is a treated
non-woven fabric having an improved tactile property. Exemplary
non-woven products are a diaper, an adult incontinence product, a
feminine hygiene product and a wipe. A method for preparing a
treated non-woven fabric having an improved tactile property is
also provided. The method comprises the steps of contacting a
surface of a non-woven fabric with an aqueous surface modifying
composition comprising functional additive, and drying the
contacted surface to produce the treated non-woven fabric.
Contacting a surface may comprise spraying, brushing, rolling,
dipping, or other methods of applying a surface modifying
composition to a non-woven fabric surface.
[0007] The functional additive is selected from the group
consisting of Additive A, Additive B, Additive C, Additive D,
Additive E, Additive F, Additive G, Additive H (as each is
described in columns 2 and 3 of Table 1); a blend of Additives G
and F ("Additive BA"), a blend of Additives F and B ("Additive BB")
and a blend of Additives F and H ("Additive BC"). The non-woven
fabric may comprise a plastic selected from the group consisting of
polyester, polyamide, and polyolefin. Exemplary polyolefins are
polypropylene and polyethylene. An exemplary polyester is
polylactide.
[0008] In an embodiment, the functional additive may be present
substantially on the surface of the non-woven fabric and optionally
in voids present on the surface of the fabric. In another
embodiment, the non-woven fabric is partially or fully impregnated
with the functional additive.
[0009] In an embodiment, the functional additive on the non-woven
fabric is Additive A and the non-woven fabric comprises: i) about
0.007 to about 0.054 g Additive A per square meter non-woven
fabric; or ii) about 0.05 to about 0.040 wt. % Additive A (relative
to dry untreated fabric weight).
[0010] In another embodiment, the functional additive on the
non-woven fabric is Additive B and the non-woven fabric comprises:
i) about 0.095 to about 0.135 g Additive B per square meter
non-woven fabric; or ii) about 0.70 to about 1.0 wt. % Additive B
(relative to dry untreated fabric weight).
[0011] In another embodiment, the functional additive on the
non-woven fabric is Additive C and the non-woven fabric comprises:
i) about 0.068 to about 0.135 g Additive C per square meter
non-woven fabric; or ii) about 0.50 to about 1.0 wt. % Additive C
(relative to dry untreated fabric weight).
[0012] In another embodiment, the functional additive on the
non-woven fabric is Additive D and the non-woven fabric comprises:
i) about 0.081 to about 0.135 g Additive D per square meter
non-woven fabric; or ii) about 0.60 to about 1.0 wt. % Additive D
(relative to dry untreated fabric weight).
[0013] In another embodiment, the functional additive on the
non-woven fabric is Additive E and the non-woven fabric comprises:
i) about 0.081 to about 0.135 g Additive E per square meter
non-woven fabric; or ii) about 0.60 to about 1.0 wt. % Additive E
(relative to dry untreated fabric weight).
[0014] In yet another embodiment, the functional additive on the
non-woven fabric is Additive F and the non-woven fabric comprises:
i) about 0.203 to about 0.324 g Additive F per square meter
non-woven fabric; or ii) about 1.5 to about 2.4 wt. % Additive F
(relative to dry untreated fabric weight).
[0015] In another embodiment, the functional additive on the
non-woven fabric is Additive G and the non-woven fabric comprises:
i) about 0.3513 to about 0.378 g Additive G per square meter
non-woven fabric; or ii) about 2.6 to about 2.84 wt. % Additive G
(relative to dry untreated fabric weight).
[0016] In another embodiment, the functional additive on the
non-woven fabric is Additive H and the non-woven fabric comprises:
i) about 0.230 to about 0.270 g Additive H per square meter
non-woven fabric; or ii) about 1.7 to about 2.0 wt. % Additive H
(relative to dry untreated fabric weight).
[0017] In yet another embodiment, the functional additive on the
non-woven fabric is Blend BA, wherein the ratio of Additive G to
Additive F is about 1:1.
[0018] In another embodiment, the functional additive on the
non-woven fabric is Blend BB, wherein the ratio of Additive F to
Additive B is about 10:3.
[0019] In another embodiment, the functional additive on the
non-woven fabric is Blend BC, wherein the ratio of Additive F to
Additive H is about 1:1.
BRIEF DESCRIPTION OF FIGURE
[0020] For the purpose of illustrating the various compositions and
methods, there are depicted in the drawings certain embodiments.
However, the compositions and their methods of use are not limited
to the precise arrangements and instrumentalities of the
embodiments depicted in the drawings.
[0021] The FIGURE is a chart depicting the pairwise comparison of a
series of treated non-woven fabric samples compared to a control
(untreated non-woven fabric sample) regarding sensory assessment
(softness/smoothness). The product used for treatment is listed
next to the relevant data. The weight percent of product on the
non-woven fabric sample is shown in parentheses. Panelists (n=3)
were asked to rate each test sample from -1 to 1, with 0 being
similar to control, -1 as exceptionally bad and +1 being
exceptionally good relative to the control and -0.5 and +0.5 used
to distinguish between slightly bad and slightly good respectively
relative to the control. Filled symbol: Wilcoxon test;
P-value.gtoreq.0.1. Empty symbol: lower 90% confidence (l.c.b.)
bound for zero values>0.66667.
DESCRIPTION
[0022] As envisioned in the present disclosure with respect to the
disclosed methods and compositions of matter, in one aspect the
embodiments of the disclosure comprise the components and/or steps
disclosed therein. In another aspect, the embodiments of the
disclosure consist essentially of the components and/or steps
disclosed therein. In yet another aspect, the embodiments of the
disclosure consist of the components and/or steps disclosed
therein.
[0023] There is a need in the art for non-woven fabrics, and
products having non-woven fabrics, having improved tactile
properties. Provided herein is a treated non-woven fabric having an
improved tactile property, a product comprising the treated
non-woven fabric, and a method of producing the treated non-woven
fabric that meets these needs.
Definitions
[0024] As used herein, each of the following terms has the meaning
associated with it in this section.
[0025] The articles "a" and "an" are used herein to refer to one or
to more than one (i.e., to at least one) of the grammatical object
of the article. By way of example, "an element" means one element
or more than one element.
[0026] The term "about" will be understood by persons of ordinary
skill in the art and will vary to some extent depending on the
context in which it is used. As used herein, "about" is meant to
encompass variations of .+-.20%, more preferably .+-.10%, more
preferably .+-.5%, even more preferably .+-.1%, and still more
preferably .+-.0.1%.
[0027] As used herein, "fabric" refers generally to a material
having a two dimensional character, i.e., the length and width of
the material is much greater than the thickness. A surface of the
fabric, as used herein, generally is defined by the length and
width dimensions.
[0028] As used herein, a "non-woven" fabric or material refers to a
fabric or material assembled from interlocking fibers that are not
interlocked by weaving. A non-woven fabric is typically made of
plastic resins. Fibers of the plastic resin may be assembled by
mechanical, chemical and/or thermal methods to form a non-woven
fabric. Exemplary methods of preparing a non-woven fabric or
material include meltblowing, spinbonding, airlaying, and a
spunlace process.
[0029] As used herein, a "non-woven product" refers to a product
that comprises a non-woven surface. The product may consist of a
non-woven fabric/material or the product may comprise a non-woven
surface, for instance, a non-woven fabric as part of, or all of,
the external surface of the product. Exemplary non-woven products
include, but are not limited to, diapers, adult incontinence
products, feminine hygiene products, and wipes such as baby
wipes.
[0030] As used herein, a "functional additive" refers to a compound
or composition of compounds that, when added, coated, sprayed,
brushed and/or otherwise applied to a non-woven fabric/material,
contributes a new property, improves an existing desirable
property, and/or reduce an existing undesirable property of the
non-woven fabric/material.
[0031] As used herein, a "surface modifying composition" refers to
a composition comprising or consisting of a functional
additive.
[0032] As used herein, a surface "treated with a surface modifying
composition" means a surface modifying composition is added,
coated, sprayed, brushed and/or otherwise applied to the
surface.
[0033] As used herein, a "treated non-woven product" refers to a
non-woven product wherein the non-woven surface has been treated
with a surface modifying composition.
[0034] As used herein, a "tactile property" refers to a property
that is perceived by touch. Exemplary tactile properties include,
but are not limited to, softness and smoothness.
[0035] As used herein, an "improved tactile property" of a treated
non-woven product refers to a tactile property that is assessed to
be better relative to the corresponding non-woven product that is
not treated. The improvement may be introduction of a new property,
improvement of an existing desirable property, and/or reduction of
an existing undesirable property of the untreated non-woven
fabric/material. The assessment may be qualitative or quantitative.
Art-accepted methods of assessing tactile properties are known to
the skilled artisan. An exemplary, but not limiting, method is
described in the Examples.
[0036] It is understood that any and all whole or partial integers
between any ranges set forth herein are included herein.
DETAILED DESCRIPTION
[0037] Provided herein is a treated non-woven fabric having an
improved tactile property. Also provided is a treated non-woven
product. The treated non-woven product comprises a non-woven
product comprising a non-woven fabric surface, wherein the
non-woven fabric surface comprises a functional additive. The
functional additive may be present substantially only on the
surface as a coating. Optionally, a surface coating may also
include functional additive partially within the voids that might
be present on the surface. Alternatively, the non-woven fabric may
be impregnated with the functional additive and thus, in addition
to functional additive on the surface, may comprise the functional
additive to a greater depth within the thickness of the fabric. The
impregnation may be partial or complete through the thickness of
the fabric. As used herein, the phrase "contacting a surface of a
non-woven" encompasses all of these embodiments, unless otherwise
specified.
[0038] The functional additive may be present substantially across
the entire non-woven two-dimensional surface, or may be present
across only a fraction of the non-woven two-dimensional surface.
For instance, in a product wherein only a part of the non-woven
surface is intended to contact skin, the functional additive may be
present substantially only on and/or within that portion of the
non-woven surface that is intended to contact skin. A non-woven
fabric may comprise a functional additive on one or both two
dimensional surfaces. Where both two dimensional surfaces of a
non-woven fabric comprise a functional additive, the additive may
be the same on both surfaces, or may be different.
[0039] Table 1 lists the functional additives A through H
discovered to improve a tactile property of a non-woven fabric and
provides a description of the components of the additives. An
exemplary product as Additive A is sold under the trademark
COSMEDIA.RTM. SP (BASF Corporation). An exemplary product as
Additive B is sold under the trademark COSMEDIA.RTM. Triple C (BASF
Corporation). An exemplary product as Additive C is sold under the
trademark RHEOCARE.RTM. HSP-1180 (BASF Corporation). An exemplary
product as Additive D is sold under the trademark SALCARE.RTM. SC96
(BASF Corporation). An exemplary dispersion product as Additive E
is sold under the trademark TINOVIS.RTM. CD (BASF Corporation). An
exemplary product as Additive F is sold under the trademark
LAMESOFT.RTM. TM BENZ (BASF Corporation). An exemplary product as
Additive G is sold under the trademark PLANTASIL.RTM. Micro (BASF
Corporation). An exemplary product as Additive H is sold under the
name Advanced Moisture Complex W (BASF Corporation). These are
exemplary commercial products and a chemical description of each
product is also included in Table 1.
TABLE-US-00001 TABLE 1 % INCI.dagger. name of Chemical ingredient
Exemplary Ingredient(s) in Description of Additive Ingredients in
Additive Product Physical state Product Product A Sodium 100
COSMEDIA .RTM. Powder Sodium Acrylic Acid Polyacrylate SP
Polyacrylate Homopolymer, Sodium salt B Polyquaternium-37; 55-60%
COSMEDIA .RTM. Non-aqueous Polyquaternium-37 Cationic Dicaprylyl
30-40% Triple C liquid (and) homopolymer Carbonate; Dicaprylyl
dispersed in Lauryl 1-10% Carbonate carrier oil Glucoside (and)
Lauryl Glucoside C Polyacrylamido 14-18% RHEOCARE .RTM. Aqueous
Polyacrylamido Polysulfonic methylpropane HSP-1180 liquid
methylpropane acid solution Sulfonic Acid; Sulfonic Acid
(Homopolymer of Water 82-86% Acrylamidomethyl- propane sulfonic
acid) D Polyquaternium-37; 40-70% SALCARE .RTM. Non-aqueous
Polyquaternium-37 Cationic Propylene 5-40% SC96 liquid (and)
homopolymer Glycol Propylene dispersed in Dicaprylate/ Glycol
medicinal grade dicaprate; Dicaprylate/ white oil PPG-1 7%
dicaprate (and) Trideceth-6; PPG-1 Processing 8% Trideceth-6 agents
(including water, C10-C11 isoparaffin and surfactant) E
Dimethylacrylamide/ 40-70% TINOVIS .RTM. Non-aqueous
Dimethylacrylamide/ Cationic acrylic ethyltrimonium CD liquid
ethyltrimonium co-polymer Chloride Chloride dispersed in
Methacrylate Methacrylate personal care Copolymer; Copolymer grade
emollient Propylene 5-40% (and) Propylene ester Glycol Glycol
Dicaprylate/ Dicaprylate/ Dicaprate; Dicaprate (and) PPG-1 7% PPG-1
Trideceth-6; Trideceth-6 Processing 8% (and) C10-C11 agents
Isoparaffin (including water, C10-C11 isoparaffin and surfactant) F
Glycol 20-30% LAMESOFT .RTM. Liquid (water Glycol Dispersion of
Distearate; TM BENZ soluble) Distearate opacifying Coco 5-15% (and)
Coco waxes with Glucoside; Glucoside (and) surfactants Glyceryl
Oleate; 1-5% Glyceryl Oleate Glyceryl 1-5% (and) Glyceryl Stearate;
Stearate Water 40-70% G Dicaprylyl .sup. 20% PLANTASIL .RTM.
Aqueous Dicaprylyl Ether Blend of Ether; Micro liquid (and) Decyl
Dicaprylyl Ether Decyl 10-20% Glucoside (and) (and) Decyl
Glucoside; Glyceryl Oleate Glucoside (and) Glyceryl Oleate; 5-10%
Glyceryl Oleate Water .sup. >50% H Glycerin; 37-42% Advanced
Aqueous Glycerin, Blend of Sodium PCA; 5-11% Moisture liquid Water,
Sodium various Urea; 5-11% Complex W PCA, Urea, Moisturizers
Trehalose; 1-4% Trehalose, Triacetin; 0.3-0.6% Polyquaternium-51,
Sodium 0.05-0.1% and hyaluronate; Sodium Polyquaternium-51;
0.01-0.1% hyaluronate Preservatives; 1.6% Water 31-38%
.dagger.International Nomenclature of Cosmetic Ingredients
[0040] The functional additive may be added, sprayed, coated,
brushed and/or other applied to a non-woven fabric in the form of a
surface modifying composition. The surface modifying composition
may consist of the functional additive and water, or may comprise
additional compatible components. As used herein, a "compatible
component" is a component that does not adversely affect
application of the surface modifying composition to a non-woven
fabric and does not adversely affect the improved tactile property
contributed by the functional additive. The surface modifying
composition may be substantially aqueous or may comprise a
hydrophobic or oily component, such as an emulsion.
[0041] A surface modifying composition may comprise the functional
additive in an amount ranging from about 0.05 wt % to about 2.0 wt.
% or from about 0.1 wt. % to about 1.0 wt % of the functional
additive. Exemplary wt. % ranges for each additive in a surface
modifying composition are shown in Table 2. A surface modifying
composition is typically aqueous. For functional additives that are
water soluble, the surface modifying composition may be prepared by
simple mixing. For functional additives that are partially or
entirely insoluble in water, the surface modifying composition may
be prepared using, for instance, heated water and a blending device
sufficient to prepare an emulsion.
TABLE-US-00002 TABLE 2 Exemplary Wt % of additive in surface
Functional modifying Additive composition A 0.1% B 0.3% C 0.3% D
0.5% E 0.5% F 1.0% G 1.0% H 1.0%
[0042] A surface modifying composition comprising a functional
additive is applied to the non-woven surface in an amount
sufficient to provide a suitable amount of additive in the
resulting treated non-woven fabric to obtain an improved tactile
property. Exemplary ranges of suitable amounts for the treated
non-woven fabric for each functional additive are presented in
Table 3. Suitable amounts are provided at wt. % functional additive
relative to the weight of the dry untreated non-woven fabric.
Alternatively, suitable amounts are also provided in wt. %
functional additive relative to surface area of non-woven fabric.
Exemplary suitable amounts are listed for each additive.
TABLE-US-00003 TABLE 3 Wt % (with Exemplary Wt % Wt % (with respect
to Exemplary Wt % respect to (with respect to Functional dry
untreated fabric (with respect to fabric square meter of square
meter of Additive weight) weight) fabric fabric) A 0.05-0.40% 0.18%
0.007-0.054% 0.024% B 0.7-1.0% 0.81% 0.095-0.135% 0.109% C 0.5-1.0%
0.7% 0.068-0.135% 0.095% D 0.60-1.0% 0.88% 0.081-0.135% 0.119% E
0.60-1.0% 0.77% 0.081-0.135% 0.104% F 1.5-2.4% 2.1% 0.203-0.324%
0.284% G 2.6-2.8% 2.66% 0.351-0.378% 0.359% H 1.7-2.0% 1.88%
0.230-0.270% 0.254%
[0043] Blends of specific individual additives have also been
discovered to improve a tactile property of a non-woven fabric.
Blends may comprise the two additives in a ratio from 3:10 to 10:3.
The ratio may be 1:1. The blends of individual additives shown in
Table 4 are useful as functional additives for improving a tactile
property of a non-woven fabric. Table 4 also includes an exemplary,
but non-limiting, wt. % of the individual additive in a surface
modifying composition, an exemplary, but non-limiting, suitable
amounts for improving a tactile property.
TABLE-US-00004 TABLE 4 Exemplary Wt. % concentration of additive in
Exemplary Wt % surface Exemplary Wt % (with respect to Additive
Exemplary modifying (with respect to square meter of Blend Additive
Product composition fabric weight) fabric) BA G PLANTASIL .RTM.
0.5% 1.09% 0.15% Micro F LAMESOFT .RTM. TM 0.5% 1.09% 0.15% BENZ BB
F LAMESOFT .RTM. TM 0.5% 1.06% 0.14% BENZ B COSMEDIA .RTM. 0.15%
0.32% 0.04% Triple C BC F LAMESOFT .RTM. TM 0.5% 1.08% 0.15% BENZ H
Advanced 0.5% 1.08% 0.15% Moisture Care W
[0044] A method of producing the treated non-woven fabric is also
provided. In brief, a disclosed method comprises contacting a
non-woven fabric with a surface modify composition comprising a
functional additive. As described elsewhere herein, contacting a
non-woven fabric surface may result in a surface coating; a surface
coating including penetration within voids that might be present on
the surface; partial impregnation within the thickness of the
fabric; and complete impregnation through the thickness of the
fabric. It is within the conventional skill of the artisan to
control the contacting to obtain the desired embodiment. The
functional additive may be added to the non-woven fabric by any
method in the art. Conventional methods include, but are not
limited to, spraying, brushing, dipping, rolling, and the like. The
functional additive may be added to a non-woven fabric during the
manufacture of the fabric, such as on an air-laid line or a
spunlace line. Alternatively, the functional additive may be added
to a non-woven fabric after it has been manufactured, or both
during manufacture and after manufacture. The functional additive
may be added to a manufactured product having a non-woven surface,
after the manufacture of the product. Alternatively, the non-woven
fabric may be treated with the surface modifying composition prior
to manufacture of the non-woven product, or during the manufacture
of the non-woven product, or any combination of before, during and
after manufacture of the non-woven product.
[0045] Exemplary plastics for non-woven fabrics include, but are
not limited to, polyester, polyolefins, and polyamides.
Polypropylene and polyethylene are exemplary polyolefins.
Polylactide is an exemplary polyester. Nylon is an exemplary
polyamide.
[0046] Any product having a surface comprising a non-woven fabric
that is intended to contact skin may comprise a functional additive
of the disclosure. An exemplary product is a wipe such as household
wipes, personal care wipes, and industrial wipes. Another exemplary
non-woven product is a diaper. The core of a typical diaper is
constructed of a topsheet that contacts the baby, an absorbent
core, and a back-sheet intended to provide leakage protection. The
topsheet may be a non-woven fabric such as a polypropylene
non-woven fabric or polyethylene non-woven fabric. The surface of
the topsheet intended to contact the baby skin may be treated with
a surface modifying composition comprising a functional additive as
described herein to improve a tactile property. Optionally, the
back-sheet may also be treated with a surface modifying composition
comprising a functional additive. The functional additive may be
the same as that on the topsheet, or it may be different. The
improved tactile property may improve the comfort of the baby. For
instance, a softer and/or smoother surface may reduce skin
irritation and other uncomfortable sensations.
EXAMPLES
[0047] The products, compositions and methods use are further
described in detail by reference to the following experimental
examples. These examples are provided for purposes of illustration
only, and are not intended to be limiting unless otherwise
specified. Thus, the products, compositions and methods of the
disclosure should in no way be construed as being limited to the
following examples, but rather, should be construed to encompass
any and all variations which become evident as a result of the
teaching provided herein.
[0048] Candidate selection: Twenty one commercial products were
selected for experimentation as possible functional additives for
non-woven products. The twenty one compositions (shown in Table 5)
were identified as candidates based on the technical aspects and
characteristics of the compositions to provide improved
sensory/tactile properties in compositions for hair and skin
applications. Parameters considered in identifying these twenty one
compositions included composition ingredients, ratio of the
ingredients, charge density, and molecular weight.
TABLE-US-00005 TABLE 5 INCI.dagger. name of Ingredient(s) in
Candidate Product Product Name Chemical Description C1 Sodium
Polyacrylate COSMEDIA .RTM. SP Acrylic Acid Homopolymer, Sodium
salt C2 Polyquaternium-37 COSMEDIA .RTM. Cationic (and) Dicaprylyl
Triple C homopolymer Carbonate (and) dispersed in carrier oil
Lauryl Glucoside C3 Polyquaternium-37 COSMEDIA .RTM. Cationic
acrylic ULTRAGEL .RTM. 300 homopolymer C4 Guar COSMEDIA .RTM.
Quaternized guar Hydroxypropyltrimonium Guar 261N Chloride C5
Polyacrylamidomethyl RHEOCARE .RTM. Polysulfonic acid propane
Sulfonic Acid HSP-1180 solution (Homopolymer of Acrylamidomethyl-
propane sulfonic acid) C6 Polyquaternium-37 SALCARE .RTM. Cationic
(and) Propylene SC96 homopolymer Glycol dispersed in
Dicaprylate/dicaprate medicinal grade white (and) PPG-1 oil
Trideceth-6 C7 Dimethylacrylamide/ TINOVIS .RTM. CD Cationic
acrylic co- ethyl-trimonium polymer dispersed in Chloride
Methacrylate personal care grade Copolymer (and) emollient ester
Propylene Glycol Dicaprylate/Dicaprate (and) PPG-1 Trideceth-6
(and) C10-C11 Isoparaffin C8 Polyquaternium-87 LUVIQUAT .RTM.
Aqueous solution of a Sensation co-polymer of vinyl pyrrolidone
(VP) and Vinyl imidazole (VI) and poly(diallyldimethylammonium
chloride) C9 Coco-Glucoside (and) LAMESOFT .RTM. Mixture of alkyl
Glyceryl Oleate PO65 glucoside with fatty acid glyceryl ester C10
Glycol Distearate LAMESOFT .RTM. TM Dispersion of (and) Coco
Glucoside BENZ opacifying waxes with (and) Glyceryl Oleate
surfactants (and) Glyceryl Stearate C11 Lauryl Glucoside EUPERLAN
.RTM. (and) Stearyl Citrate Green C12 Dicaprylyl Ether (and) CETIOL
.RTM. LDO Blend of Dicaprylyl Lauryl Alcohol Ether (and) Lauryl
Alcohol C13 Dicaprylyl Ether (and) PLANTASIL .RTM. Blend of
Dicaprylyl Decyl Glucoside (and) Micro Ether (and) Decyl Glyceryl
Oleate Glucoside (and) Glyceryl Oleate C14 Brassica campestris
PHYTOSOOTHE .TM. Association of (rapeseed) Sterols LS9766 Rapeseed
Sterols (and) Aetearyl with Cetearyl Alcohol Alcohol C15
Octyldodecanol (and) SPHINGOCERYL .RTM. Lipocomplex of Hydrogenated
Coco- Veg LS 8712 ceramides, glycolipids Glycerides (and) and and
phospholipids Helianthus Annuus extracted from (Sunflower) Seed
sunflower Extract C16 Honey Extract MELHYDRAN .RTM. Purified
complex of LS 4420 monosaccharides from honey and various
components C17 Argania Spinosa LIPOFRUCTYL .RTM. Botanical oil,
obtained Kernel Oil Argan LS9779 from kernels of Argania Spinosa
C18 Hydrolyzed Casein CYTOKINOL .RTM. LS Concentrated (and)
Hydrolyzed 9028 complex of peptides Yeast Protein (and) of yeast
and of lactic Lysine HCl origin C19 Mannitol (and) ANASENSYL .RTM.
Unique complex of Ammonium LS 9322 botanical and Glycyrrhizate
(and) synthetic origins, Caffeine (and) Zinc made of Zinc salt,
Gluconate (and) Xanthic base, Aesculus Glycyrrhizate, Hippocastanum
Aesculus extract, and (Horse Chestnut) Mannitol Extract C20
Glycerin, Water, Advanced Blend of various Sodium PCA, Urea,
Moisture Moisturizers Trehalose, Complex W Polyquaternium-51, and
Sodium hyaluronate C21 Cetearyl EMULGADE .RTM. 0/W Emulsion
Isononanoate, CM Concentrate of Ceteareth-20, cosmetic 0il,
nonionic Cetearyl Alcohol, Emulsifiers and Wax- Glycerin, Cetyl
like Constituents Palmitate, and Ceteareth-12 .dagger.International
Nomenclature of Cosmetic Ingredients
[0049] The candidate products were tested using the following
procedure.
[0050] Candidate test solution preparation: The water solubility of
each product was tested. Then, a solution or dispersion
(hereinafter "test solution") was prepared in water for each
candidate composition. For water soluble candidates, the test
solution was mixed for 5 minutes on a stir plate with a stir bar.
For water insoluble or partially insoluble candidates, the test
solution was prepared using heated water (.about.60.degree. C.) and
was blended for 20 seconds with a homogenizer (Cuisinart.RTM. Hand
Blender Model CSB-76) to prepare an aqueous dispersion. Additional
blend time was added if the dispersion was not completely mixed
after 20 seconds. For most candidates, the test solution prepared
was generally a 1% solution prepared in, for instance, 100 ml of
water or the amount of water needed to obtain a 1% solution.
However, for some candidates, the test solution had a reduced
percentage of candidate product because the viscosity of a 1% test
solution was too high to permit a fine spray. Data on the physical
state and solubility of the candidate product and the test solution
concentrations prepared is in Table 6.
TABLE-US-00006 TABLE 6 Test solution concentration Candidate
Physical State H2O solubility (wt. % C1 Powder Insoluble 0.1 C2
White liquid Partial 0.3 C3 Powder Insoluble 0.1 C4 Powder Partial
1.0 C5 White liquid Partial 0.3 C6 White liquid Partial 0.5 C7
White liquid Insoluble 0.5 C8 Liquid Soluble 1.0 C9 Thick gel
Soluble 1.0 C10 White liquid Soluble 1.0 C11 White liquid Partial
1.0 C12 Liquid Insoluble 0.5 C13 Liquid Soluble 1.0 C14 Powder
Insoluble 0.5 C15 Soft solid Insoluble 0.5 C16 Liquid Soluble 1.0
C17 Liquid Insoluble 0.5 C18 Powder Soluble 1.0 C19 Powder Soluble
1.0 C20 Liquid Soluble 1.0 C21 Liquid Soluble 2.0 10.0
[0051] Candidate test sample preparation: Immediately after
preparation of the test solutions, the test solution was loaded by
spraying onto the hydrophilic face of a 4 inch.times.8 inch sample
of an exemplary non-woven fabric as follows.
[0052] The exemplary non-woven fabric used in the study was
manufactured by AVGOL Ltd. The non-woven fabric had the following
specifications: Weight: 13.5 grams per square meter (gsm); Width:
20.00 cm; Length: 11,500 rmt; Roll Area: 2,300.00 sqmt; Customer
Item No: 2005433; PR Date: May 1, 2010; Lot No. 23/10; and Shaft
No. 1 Roll No. 3\13. The non-woven material was cut into 4 inch by
8 inch pieces using a paper cutter. The initial weight of each
piece of non-woven fabric ("initial fabric sample weight") was
measured and recorded.
[0053] Each non-woven fabric sample was tested for hydrophilicity
by pipetting a small droplet of water onto each side of the fabric
sample. Once the hydrophilic face was determined for the fabric
sample, the fabric sample was suspended using a binder clip and
oriented so that the hydrophilic face of the sample was facing in
the direction of the sprayer. A test solution was sprayed on the
hydrophilic face of the sample using a Paasche Painter's Airbrush.
The sprayed sample was then weighed to obtain the wet sample
weight. Two duplicates were prepared for each test solution. Wet
sample weights obtained ranged from 0.09 to 1.2 grams. The loading
ratio of the combined weight of the test solution and the non-woven
fabric sample to the weight of the dry non-woven fabric sample was
maintained between 3 to 4 for all the samples prepared.
[0054] The wet treated non-woven samples were allowed to air dry
overnight on a watch glass. Once dried, the final dry weight of
each treated sample was taken. Each dried treated sample was stored
in a closed plastic ZIPLOC bag. The amount of the test product
applied to the non-woven fabric sample was recorded as weight
percent of product:
wt % product = ( wetsampleweight - initialfabricsampleweight )
initialfabricsampleweight .times. 100 ( 1 ) ##EQU00001##
[0055] Sensory data collection: The sensory perception evaluation
of the treated non-woven fabric samples was carried out by a panel
(three or four individuals). Sensory assessment was made in
comparison to the untreated non-woven fabric. Assessments were done
on the volar forearms. The volar forearm is the area of skin
between the wrist and the elbow, on the palm side of the arm; this
area of skin is highly sensitive. The volar forearm was contacted
with the untreated or treated non-woven fabric sample by circular
rubbing. In order to prevent the panelist from visually
distinguishing between the treated and un-treated non-wovens, the
panelists were asked not to look at the samples while evaluating
therm Smoothness/softness were the sensory property that the
panelist were asked to evaluate. Panelists were asked to rate each
test sample from -1 to 1, with 0 being similar to control, -1 as
exceptionally bad and +1 being exceptionally good relative to the
control and -0.5 and +0.5 were used to distinguish between slightly
bad and slightly good respectively relative to the control. The
tests were performed at room temperature.
[0056] Statistics: To evaluate the sensory data, the medians for
each parameter were calculated, as well as the average absolute
deviation from the median as a measure of the variation of the
individual values for each parameter. To calculate the statistical
significance of a pair-wise calculation, the Wilcoxon test was
carried out.
[0057] The weight percent product on the non-woven sample data and
sensory data for the 21 candidate products are summarized in Table
7.
TABLE-US-00007 TABLE 7 Wt. % product on non-woven Candi- Test
Solution fabric Panelist Rating date Concentration sample 1 2 3 4
C1 0.1 0.18 0.5 0.5 0 n.a..dagger-dbl. 0.35 0 0 0.5 n.a C2 0.3 0.81
-0.5 0.5 n.a 0.5 0.64 0 0 n.a 0 C3 0.1 0.25 0.5 0 -0.5 n.a. 0.18
0.5 0 -0.5 n.a. C4 1.0 2.09 -1 -1 n.a. -1 2.06 -1 0 n.a. -0.5 C5
0.3 0.66 0.5 0.5 0 n.a. 0.73 0.5 0.5 0 n.a. C6 0.5 0.94 0.5 0.5 0
n.a. 0.82 0.5 0.5 0 n.a. C7 0.5 1.42 -0.5 0.25.dagger..dagger. 0
n.a. 0.77 0.5 0.25 0.5 n.a. C8 1.0 2.7 0 0 n.a. 0 2.56 0 -0.5 n.a.
-0.5 C9 1.0 2.12 -0.5 -0.5 1 n.a. 2.5 0 -0.5 1 n.a. C10 1.0 2.15 0
0.5 0.5 n.a. 2.64 0.5 0 -0.5 n.a. C11 1.0 2.23 -0.5 0 0.5 0.5 2.03
0 -0.5 -0.5 1 C12 0.5 1.09 0 0.5 0 -0.5 1.00 0 0.5 -0.5 0.5 C13 1.0
2.66 0 0 0.5 1 1.88 -0.5 -0.5 -0.5 0.5 C14 0.5 1.23 -0.5 -0.5 0.5
0.5 0.93 -0.5 0 0.5 0.5 C15 0.5 1.21 0.5 -0.5 n.a. -0.5 1.16 0 0.5
n.a. 0 C16 1.0 2.58 0 0 0.5 0.5 2.55 0 0 0.5 0.5 C17 0.5 0.93 0 0
n.a. 0 1.28 0 -0.5 n.a. 0.5 C18 1.0 2.09 0 -0 n.a. -0.5 2.76 -0.5 0
n.a. -0.5 C19 1.0 2.19 -0.5 -0.5 n.a. 0.5 2.58 -0.5 0.5 n.a. -0.5
C20 1.0 1.88 0.5 0.5 n.a. 0 2.19 0 0 n.a. 0.5 C21 2.0 4.32 0 0.5
0.5 0 4.81 0.5 0 0 0 10. 19.7 0.5 0 0.5 0 22.5 0.5 0 0.5 0
.dagger-dbl.n.a. indicates panelist did not evaluate this sample.
.dagger..dagger.0.25 indicates very slightly good relative to
control
[0058] The statistical analyses of the data in Table 7 are depicted
in the chart in the FIGURE. In the chart, the position of the
symbol indicates the median. The average absolute deviation from
the median is transformed into the weighted deviation from the
median and is shown in the chart in the form of shifted lines.
[0059] The data indicate that the majority of the candidate
products did not improve the tactile property of the non-woven
fabric or made the tactile properties worse, compared to the
untreated non-woven fabric. These results are surprising because
all of the candidate products were selected in part due to their
known function to improve tactile properties in hair and skin
applications. The candidates that improved the tactile property of
the non-woven fabric were: C1 (COSMEDIA.RTM. SP), C2 (COSMEDIA.RTM.
Triple C), C5 (RHEOCARE.RTM. HSP-1180), C6 (SALCARE.RTM. SC96), C7
(TINOVIS.RTM. CD), 010 (LAMESOFT.RTM. TM BENZ), and C20 (Advanced
Moisture Complex W) Although the median score for candidate C13
(PLANTASIL.RTM. Micro) was 0, the weighted deviation suggests that
this composition also can improve the tactile property of the
non-woven fabric. In some cases, the improvement in tactile
property was observed only at one of two weight percent product
tested. Specifically, COSMEDIA.RTM. SP improved the
softness/smoothness at 0.18 wt. %; COSMEDIA.RTM. Triple C at 0.81
wt. %; TINOVIS.RTM. CD at 0.77 wt. %, LAMESOFT.RTM. TM BENZ at 2.1
wt. %; PLANTASIL.RTM. Micro at 2.66 wt. %; and Advanced Moisture
Complex W at 1.88 wt. %. RHEOCARE.RTM. HSP-1180 improved the
tactile property at 0.66 wt. % and 0.73 wt. %, and SALCARE.RTM.
SC96 improved the tactile property of the non-woven fabric at 0.94
wt. % and 0.82 wt. %.
[0060] A series of blends of a subset of the candidate products
were also prepared. Test solutions of blends were prepared by
simple mixing using a stir bar and stir plate. For each test
solution blend shown in Table 8, the first candidate product was
mixed in water, then the second product was added to obtain the
desired wt. % of each in the final blend. For instance, blend B1
was prepared by mixing candidate C13 in water, then adding
candidate 010, in appropriate quantities to obtain a test solution
blend consisting of 0.5 wt C13 and 0.5 wt. % C10. A summary of the
blends and the data regarding the treated fabric samples prepared
are shown in Table 8.
TABLE-US-00008 TABLE 8 Wt. % concentration Initial Final Blend INCI
name of active Candidate in test Fabric Wet Dry Wt % number
ingredients in blend number (name) solution wt (g) Wt (g) Wt (g)
product B1 Dicaprylyl Ether (and) C13 0.5 0.31 0.9 0.3 0.95% Decyl
Glucoside (and) (PLANTASIL .RTM. Glyceryl Oleate Micro) Glycol
Distearate (and) C10 0.5 0.95% Coco Glucoside (and) (LAMESOFT .RTM.
Glyceryl Oleate (and) TM BENZ) Glyceryl Stearate B2 Glycol
Distearate (and) C10 0.5 0.29 1.06 0.3 1.33% Coco Glucoside (and)
(LAMESOFT .RTM. Glyceryl Oleate (and) TM BENZ) Glyceryl Stearate
Polyquaternium-37 (and) C2 0.15 0.40% Dicaprylyl Carbonate
(COSMEDIA .RTM. (and) Lauryl Glucoside Triple C) B3 Glycol
Distearate (and) C10 0.5 0.29 0.9 0.3 0.19% Coco Glucoside (and)
(LAMESOFT .RTM. Glyceryl Oleate (and) TM BENZ) Glyceryl Stearate
Polyquaternium-37 (and) C6 0.25 0.09% Propylene Glycol (SALCARE
.RTM. Dicaprylate/dicaprate SC96) (and) PPG-1 Trideceth-6 B4 Glycol
Distearate (and) C10 0.5 0.29 0.94 0.3 1.12% Coco Glucoside (and)
(LAMESOFT .RTM. Glyceryl Oleate (and) TM BENZ) Glyceryl Stearate
Dimethylacrylamide/ C7 (TINOVIS .RTM. 0.25 0.56% ethyltrimonium
Chloride CD) Methacrylate Copolymer (and) Propylene Glycol
Dicaprylate/Dicaprate (and) PPG-1 Trideceth-6 (and) C10-C11
Isoparaffin B5 Glycol Distearate (and) C10 0.5 0.29 0.93 0.31 1.10%
Coco Glucoside (and) (LAMESOFT .RTM. Glyceryl Oleate (and) TM BENZ)
Glyceryl Stearate Glycerin, Sodium PCA, C20 (Advanced 0.5 1.10%
Urea, Trehalose, Moisture Care W) Polyquaternium-51, and Sodium
hyaluronate B6 Dicaprylyl Ether (and) C13 0.5 0.30 1.06 0.31 1.27%
Decyl Glucoside (and) (PLANTASIL .RTM. Glyceryl Oleate Micro)
Polyquaternium-37 (and) C2 0.15 0.38% Dicaprylyl Carbonate
(COSMEDIA .RTM. (and) Lauryl Glucoside Triple C) B7 Dicaprylyl
Ether (and) 13 (PLANTASIL .RTM. 0.5 0.29 0.9 0.3 1.05% Decyl
Glucoside (and) Micro) Glyceryl Oleate Polyquaternium-37 (and) C6
(SALCARE .RTM. 0.25 0.53% Propylene Glycol SC96)
Dicaprylate/dicaprate (and) PPG-1 Trideceth-6 B8 Dicaprylyl Ether
(and) C13 0.5 0.28 0.91 0.3 1.13% Decyl Glucoside (and) (PLANTASIL
.RTM. Glyceryl Oleate Micro) Dimethylacrylamide/ C7 (TINOVIS .RTM.
0.25 0.56% ethyltrimonium Chloride CD) Methacrylate Copolymer (and)
Propylene Glycol Dicaprylate/Dicaprate (and) PPG-1 Trideceth-6
(and) C10-C11 Isoparaffin B9 Dicaprylyl Ether (and) C13 0.5 0.29
0.98 0.29 1.19% Decyl Glucoside (and) (PLANTASIL .RTM. Glyceryl
Oleate Micro) Glycerin, Sodium PCA, C20 (Advanced 0.5 1.19% Urea,
Trehalose, Moisture Polyquaternium-51, and Complex W) Sodium
hyaluronate
[0061] Non-woven fabric samples treated with the series of test
solution blends were prepared and tested by a panel of two
individuals. The sensory data for the blends are summarized in
Table 9.
TABLE-US-00009 TABLE 9 Softness relative to control Blend Panelist
-1 -0.5 0 0.5 1 B1 1 X 2 X B2 1 X 2 X B3 1 X 2 X B4 1 X 1 X B5 X X
B6 X X B7 X X B8 X X B9 X X
[0062] The data demonstrate that only three of the blends improved
a tactile property of the non-woven fabric. The three blends were
B1, B2 and B5. All three of these blends included candidate C13
(LAMESOFT.RTM. TM BENZ).
[0063] Additional duplicates of treated non-woven fabric samples of
some of the candidate products and blends were prepared for testing
by two additional panelists. The candidate products were: C2, C6,
C7, C10, C13, and C20. The blends were B1, B2, and B5. The sensory
testing was performed using a scale of 1 to 5 where 5 is the most
pleasant. The two panelists were asked to rank samples on tactile
properties as well as other performance parameters typically tested
for diapers. The hydrophobicity/hydrophilicity of the treated
non-woven samples was also assessed using a de-ionic water drop
penetration test for chemical coating on a non-woven sheet (n=3
drops). In brief, a drop of deionized water is allowed to fall from
a height of about 1 cm onto the sample surface. If the water drop
stays on the non-woven sample surface for more than 10 seconds, the
surface is deemed hydrophobic. If the water drop stays on the
non-woven sample surface for less than 3 seconds, the surface is
deemed hydrophilic. If the drop stays on the non-woven surface for
greater than 3 seconds and less than 10 seconds, it is deemed
hesitated. The water surface tension is about 72 dyne/cm at room
temperature. The data are presented in Table 10.
TABLE-US-00010 TABLE 10 Panelist 2 Product Hydrophobic Hydrophilic
Panelist 1 Panelist 2 comments C2 XXX 5 4 Very silky C6 XXX 4 3
Silky C20 XXX 4 3 Silky C10 XXX (very) 3 2 Soft C7 XXX 3 2 Soft B2
XXX 2 2 Soft C13 XXX 1 1 Not soft B5 XXX 1 1 Not soft B1 XXX (very)
1.5 1 Not soft
[0064] Both panelists commented that that non-woven fabric sample
treated with Additive C2 was by far the best feeling of the 9
samples evaluated.
[0065] The disclosures of each and every patent, patent
application, and publication cited herein are hereby incorporated
herein by reference in their entirety for all purposes.
[0066] While the products, methods of making them, and their
methods of use have been disclosed with reference to specific
embodiments, it is apparent that other embodiments and variations
may be devised by others skilled in the art without departing from
the true spirit and scope of the described products and methods.
The appended claims are intended to be construed to include all
such embodiments and equivalent variations.
* * * * *