U.S. patent application number 16/705532 was filed with the patent office on 2020-06-25 for deodorizing fiber.
The applicant listed for this patent is NAN YA PLASTICS CORPORATION. Invention is credited to Chia-Sheng Lai, TE-CHAO LIAO, CHUNG-CHI SU.
Application Number | 20200199809 16/705532 |
Document ID | / |
Family ID | 71099220 |
Filed Date | 2020-06-25 |
United States Patent
Application |
20200199809 |
Kind Code |
A1 |
LIAO; TE-CHAO ; et
al. |
June 25, 2020 |
DEODORIZING FIBER
Abstract
A deodorizing fiber is obtained by adding a modified deodorizing
powders and a dispersing agent to be mix granulated and spun in a
polyester material, and the deodorizing fiber has a fineness
between 1 to 10 dpf. The deodorizing fiber satisfies the following
conditions: according to the ISO17299 test, a concentration of 100
ppm ammonia and 30 ppm acetic acid is reduced by more than 70%
within 2 hours, and the deodorizing effect is 70% or more after
washing for 0 times and 10 times.
Inventors: |
LIAO; TE-CHAO; (TAIPEI,
TW) ; SU; CHUNG-CHI; (TAIPEI, TW) ; Lai;
Chia-Sheng; (TAIPEI, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
NAN YA PLASTICS CORPORATION |
Taipei |
|
TW |
|
|
Family ID: |
71099220 |
Appl. No.: |
16/705532 |
Filed: |
December 6, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
D10B 2331/04 20130101;
D06M 13/005 20130101; D06M 15/507 20130101; D10B 2401/041 20130101;
D06M 2101/32 20130101; D06M 16/00 20130101 |
International
Class: |
D06M 13/00 20060101
D06M013/00; D06M 15/507 20060101 D06M015/507 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 25, 2018 |
TW |
107147005 |
Claims
1. A deodorizing fiber obtained by melt spinning a deodorizing
masterbatch, characterized in that the deodorizing masterbatch
includes the following components and the sum of the components
based on the total weight of the deodorizing masterbatch is 100% by
weight: (a) 50-95 wt % of a thermoplastic polymer selected from
polyester powders or polyester granules having an intrinsic
viscosity from 0.2 to 2.0; (b) 1-30 wt % of modified deodorizing
powders which are selected from one or more than one of the
oxidation or the composite oxides of aluminum, titanium, zinc,
silicon, iron and zirconium elements modified by a silane coupling
agent or a phthalate modifier, and the modified deodorizing powder
has a particle size of 1 .mu.m; and (c) 0.01-5 wt % of an
antioxidant; wherein the deodorizing fiber satisfies the following
conditions: according to the ISO17299 test, a concentration of 100
ppm ammonia and acetic acid is reduced by more than 70% within 2
hours, and the deodorizing effect is 70% or more after washing for
0 times and 10 times.
2. The deodorizing fiber according to claim 1, wherein the
deodorizing masterbatch has a pressure value of less than or equal
to 0.5 bar/g.
3. The deodorizing fiber according to claim 1, wherein the
deodorizing masterbatch has a fiber fineness of from 1 to 10
dpf.
4. The deodorizing fiber according to claim 2, wherein the
deodorizing masterbatch has a fiber fineness of from 1 to 10
dpf.
5. The deodorizing fiber according to claim 3, wherein the fiber
structure of the deodorizing fiber is a core-sheath type structure,
a core portion being polyester, a sheath portion including the
modified deodorizing powders, and a core-sheath ratio of the
deodorizing fiber being between 40:60 and 60:40.
6. The deodorizing fiber according to claim 4, wherein the fiber
structure of the deodorizing fiber is a core-sheath type structure,
a core portion being polyester, a sheath portion including the
modified deodorizing powders, and a core-sheath ratio of the
deodorizing fiber being between 40:60 and 60:40.
7. The deodorizing fiber according to claim 3, wherein the diameter
of the deodorizing fiber is from 10 .mu.m to 30 .mu.m.
8. The deodorizing fiber according to claim 4, wherein the diameter
of the deodorizing fiber is from 10 .mu.m to 30 .mu.m.
9. The deodorizing fiber according to claim 1, wherein the modified
deodorizing powders further include 0.1-20 wt % of the silane
coupling agent or the phthalate modifier.
10. The deodorizing fiber according to claim 1, wherein the
modified deodorizing powders further include 1-10 wt % of
3-acryloxypropyltrimethoxysilane or stearyl titanate.
11. The deodorizing fiber according to claim 1, wherein the
intrinsic viscosity of the thermoplastic polymer is 0.8.
12. The deodorizing fiber according to claim 1, wherein the
antioxidant is a hindered phenol type antioxidant or a phosphite
type antioxidant.
13. The deodorizing fiber according to claim 1, wherein the
antioxidant is bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol
diphosphite.
Description
CROSS-REFERENCE TO RELATED PATENT APPLICATION
[0001] This application claims the benefit of priority to Taiwan
Patent Application No. 107147005, filed on Dec. 25, 2018. The
entire content of the above identified application is incorporated
herein by reference.
[0002] Some references, which may include patents, patent
applications and various publications, may be cited and discussed
in the description of this disclosure. The citation and/or
discussion of such references is provided merely to clarify the
description of the present disclosure and is not an admission that
any such reference is "prior art" to the disclosure described
herein. All references cited and discussed in this specification
are incorporated herein by reference in their entireties and to the
same extent as if each reference was individually incorporated by
reference.
FIELD OF THE DISCLOSURE
[0003] The present disclosure relates to a fiber, and more
particularly to a deodorizing fiber which can be dehydrated after
being washed several times.
BACKGROUND OF THE DISCLOSURE
[0004] In recent years, consumers have paid great attention to the
selection of textiles in terms of comfort in use, including
moisture absorption and quick drying, heat storage and heat
preservation, cool touch and antibacterial deodorization. Many
functional fibers have been gradually developed according to market
demand. As outdoor sports become more and more popular, eliminating
the odor of clothing after exercise is an extremely important part
of the consumer demand. In addition, consumers also hope to
overcome issues related to body odor through the function of
textiles.
[0005] In conventional deodorizing fibers, an active carbon-based
material, for example, a porous material including bamboo charcoal
or coconut shell carbon, is added to the fiber to adsorb the odor
on the surface of the fiber to achieve a deodorizing effect.
[0006] The principle of the deodorizing material using a porous
material to achieve the adsorption effect; however, the adsorption
of the porous material can eventually be saturated. A preferred
method is using the chemical reaction of the material to neutralize
the odor to restore the deodorizing material, called the
neutralization effect, by water washing.
[0007] Such deodorizing fibers have been disclosed in People's
Republic of China Patent Publication No. CN102822411A, which is
impregnated with a polyester fiber in an aqueous hydroxy acid
solution, and which, after heat treatment, can be washed with water
and have a deodorizing effect.
[0008] In a similar manner, in People's Republic of China Patent
Publication No. CN103343456A, the fabric is impregnated with an
aqueous solution of titanium dioxide, and after UV irradiation and
heat treatment, the titanium dioxide would have photocatalytic
property, so as to make the fabric have antibacterial and
deodorizing characteristics.
[0009] In People's Republic of China Patent Publication No.
CN1756870A, deodorizing particles (0.1-1.5 .mu.m) are combined with
resin and fiber by using an adhesive agent and then drying after
heat treatment. After washing with water, the fabric may be
inferior due to the bonding agent, and subsequent processes may
decrease the effect of deodorization after washing.
[0010] In People's Republic of China Patent Publication No.
CN102978727A, the fiber fabric spinning is made by the masterbatch
which is made of an antibacterial agent, and post-treatment with
antibacterial agent, so as to increase the antibacterial
effect.
SUMMARY OF THE DISCLOSURE
[0011] In response to the above-referenced technical inadequacies,
the present disclosure provides a modified deodorizing powder.
After modification, the deodorizing powder can be uniformly
dispersed in the resin, which can effectively help the modified
deodorizing powder to be evenly distributed in the fiber. The
deodorizing powder is an inorganic powder having good thermal
stability and is at least one selected from the group consisting of
A1, Ti, Zn, Si, Fe or Zr element oxides or composite oxides
thereof. The particle size of the deodorizing powder is smaller
than or equal to 1 .mu.m.
[0012] The modified deodorizing powder of the present disclosure
includes 0.1-20 wt % of the silane coupling agent or the phthalate
modifier, in an amount relative to the modified deodorizing powder.
Preferably, the modified deodorizing powder of the present
disclosure includes 1-10 wt % of 3-acryloxypropyltrimethoxysilane
or stearyl titanate, in an amount relative to the modified
deodorizing powder.
[0013] In one aspect, the present disclosure provides a deodorizing
masterbatch, based on the total weight of the deodorizing
masterbatch, includes 50-95 wt % of thermoplastic (polymer) resin,
1-30 wt % of modified deodorizing powder, and 0.01-5 wt % of
antioxidant. After modification, the modified deodorizing powder
can be uniformly dispersed in the resin, and the combination of the
modified deodorizing powder and the resin can be improved. The
pressure value of the deodorizing masterbatch is less than or equal
to 0.5 bar/g. The deodorizing fiber obtained by spinning has a
deodorizing effect of more than 70% before and after washing, and
has a good deodorizing effect (>70%).
[0014] The antioxidant of the present disclosure can be a hindered
phenol type or phosphite type antioxidant, preferably
bis(2,6-di-tert-butyl-4-methylphenyl) pentaerythritol
diphosphite.
[0015] In one aspect, the present disclosure provides a deodorizing
fiber, and more particularly to a deodorizing fiber which exhibits
a deodorizing effect even under a low odor concentration, that is,
the odor can be eliminated by 70% or more in under two hours.
[0016] The deodorizing fiber of the present disclosure has a
deodorizing effect of more than 70% before and after washing, and
has a good deodorizing effect (>70%).
[0017] These and other aspects of the present disclosure will
become apparent from the following description of the embodiment
taken in conjunction with the following drawings and their
captions, although variations and modifications therein may be
affected without departing from the spirit and scope of the novel
concepts of the disclosure.
DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS
[0018] The present disclosure is more particularly described in the
following examples that are intended as illustrative only since
numerous modifications and variations therein will be apparent to
those skilled in the art. Like numbers in the drawings indicate
like components throughout the views. As used in the description
herein and throughout the claims that follow, unless the context
clearly dictates otherwise, the meaning of "a", "an", and "the"
includes plural reference, and the meaning of "in" includes "in"
and "on". Titles or subtitles can be used herein for the
convenience of a reader, which shall have no influence on the scope
of the present disclosure.
[0019] The terms used herein generally have their ordinary meanings
in the art. In the case of conflict, the present document,
including any definitions given herein, will prevail. The same
thing can be expressed in more than one way. Alternative language
and synonyms can be used for any term(s) discussed herein, and no
special significance is to be placed upon whether a term is
elaborated or discussed herein. A recital of one or more synonyms
does not exclude the use of other synonyms. The use of examples
anywhere in this specification including examples of any terms is
illustrative only, and in no way limits the scope and meaning of
the present disclosure or of any exemplified term. Likewise, the
present disclosure is not limited to various embodiments given
herein. Numbering terms such as "first", "second" or "third" can be
used to describe various components, signals or the like, which are
for distinguishing one component/signal from another one only, and
are not intended to, nor should be construed to impose any
substantive limitations on the components, signals or the like.
[0020] A deodorizing powder of the present disclosure is an
inorganic powder having good thermal stability and is at least one
selected from the group consisting of Al, Ti, Zn, Si, Fe or Zr
element oxides and composite oxides thereof. The particle size of
the deodorizing powder is smaller than or equal to 1 .mu.m. The
surface of the inorganic powder is modified by powder surface
modification technique, that is, modifying the surface of the
inorganic powder with a modifier such as a silane coupling agent or
a phthalic phthalate modifier, and the added amount is 0.1-20 wt %,
preferably is 1-10 wt %.
[0021] The silane coupling agent of the present disclosure is
selected from the group consisting of vinyltrichlorosilane,
trimethoxyvinylsilane, triethoxyvinylsilane,
vinyltris(.beta.-methoxyethoxy)silane,
.beta.-(3,4-epoxycyclohexyl)ethyltrimethoxysilane,
.gamma.-(2-aziridine) aminopropyltrimethoxysilane,
.gamma.-glycidoxypropyltrimethoxysilane,
.gamma.-glycidoxypropyltrimethyldiethoxysilane,
.gamma.-glycidoxypropyltriethoxysilane,
.gamma.-methylpropenylpropyldimethoxysilane,
.gamma.-methylpropenyltrimethoxysilane,
.gamma.-methylpropenylpropyldiethoxysilane,
.gamma.-methylpropenylpropyltriethoxysilane,
N-.beta.(aziridine).gamma.-aminopropylmethyldimethoxysilane,
N-.beta.(aziridine).gamma.-aminopropyltrimethoxysilane,
N-.beta.(aziridine).gamma.-aminopropyltriethoxysilane,
3-acryloxypropyltrimethoxysilane, 3-aminopropyltrimethoxysilane,
3-aminopropyltriethoxysilane,
N-phenyl-.gamma.-aminopropyltrimethoxysilane,
.gamma.-chloropropyltrimethoxysilane,
.gamma.-hydrothiopropyltrimethoxysilane,
bis[3-(triethoxysilyl)propyl] tetrasulfide (TESPT) and
bis[3-(triethoxysilyl)propyl]-disulfide, and preferably is
3-acryloxypropyltrimethoxysilane.
[0022] The titanate of the present disclosure is selected from the
group consisting of isostearyl titanate, stearyl titanate, oleyl
titanate or pyrophosphate titanate, and preferably is stearyl
titanate.
[0023] The modification process of the deodorizing powder of the
present disclosure includes the following steps.
[0024] Deodorized powders are placed in a stirred tank with fence
type stirring blades and stirred at 250 rpm. Based on the weight of
the deodorizing powder, 1-10 wt % of the modifier
3-acryloxypropyltrimethoxysilane is dissolved in a 1:6 volume ratio
of the modifier to the isopropanol. The modifier is gradually
dropped into the deodorizing powder, the blade stirring rate is
adjusted to 1000 rpm, and the dropwise acceleration rate is 1
ml/min. After the completion of the dropwise addition, the stirring
tank is heated to 120.degree. C. and stirred for 2 hours to
volatilize the isopropanol, so as to obtain the modified
deodorizing powder.
[0025] A method for preparing the deodorizing masterbatch of the
present disclosure includes the following steps.
[0026] Based on the total weight of the deodorizing masterbatch,
1-30 wt % of the deodorizing powder, 50-95 wt % of the
thermoplastic polymer, and 0.01-5 wt % of the antioxidant are used
as raw materials. Further, the thermoplastic polymer is selected
from polyester powder or polyester granules having an intrinsic
viscosity from 0.2 to 2.0, and preferably 0.8.
[0027] After the above raw materials are uniformly mixed into a
mixed powder, the mixed powder is kneaded by a twin-screw extruder;
the thermoplastic polymer (or resin) is melted at a kneading
temperature of 180-280.degree. C. and a rotation speed of 250
rpm.
[0028] The terminal group of the modifier on the deodorizing powder
is excellent in compatibility with the resin, so that the
deodorizing powder is dispersed very uniformly in the resin, and
after being cooled by water, the pellet is dried. Further, after
drying at 140.degree. C. for 4-6 hours, the deodorizing masterbatch
of the present disclosure was obtained.
[0029] More specifically, the modified deodorizing powder of the
present disclosure is an inorganic material, and after the surface
is modified, the deodorizing powder can be uniformly dispersed in
the resin. Therefore, the deodorizing masterbatch of the present
disclosure has no pressure phenomenon in the spinning process, has
good spinning performance, and can be subjected to spinning
production for a long period of time.
[0030] The antioxidant of the present disclosure can be a hindered
phenol type or phosphite type antioxidant.
[0031] The phosphite type antioxidant can be selected from dimethyl
3,5-di-tert-butyl-4-hydroxybenzylphosphonate, diethyl
3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dipropyl
3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dibutyl
3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dipentyl
3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dihexyl
3,5-di-tert-butyl-4-hydroxybenzylphosphonate, diheptyl
3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dioctyl
3,5-di-tert-butyl-4-hydroxybenzylphosphonate,
bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite,
bis(3,5-di-t-butyl-4-hydroxybenzyl)diethylphosphonate manganese,
bis(3,5-di-t-butyl-4-hydroxybenzyl)diethylphosphonate magnesium,
bis(3,5-di-t-butyl-4-hydroxybenzyl)diethylphosphonate calcium, or
bis(3,5-di-t-butyl-4-hydroxybenzyl)diethylphosphonate zinc, and
preferably is bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol
diphosphite.
[0032] The deodorizing fiber of the present disclosure is obtained
by melt-spinning the dried deodorizing masterbatch. The fiber
structure of the deodorizing fiber can be formed by composite
spinning to form a core-sheath structure, a core portion being
polyester, a sheath portion being deodorizing masterbatch, and the
core-sheath ratio (core/sheath) varies between 40/60 to 60/40. The
deodorant is distributed on the outer layer of the fiber and can
effectively react with the odor gas.
[0033] The method for producing the deodorizing fiber of the
present disclosure includes the following steps.
[0034] The deodorizing masterbatch of the present disclosure is
used as raw material, and is made into a core-sheath structure of
deodorizing partial oriented yarn (POY) by conjugate spinning at a
spinning temperature of 230.degree. C. to 290.degree. C. and a
spinning take-up speed of 1000 m/min to 3000 m/min, and then the
POY is made into a draw textured yarn (DTY) by false twisting, that
is, the deodorizing fiber of the present disclosure. The
deodorizing fiber has a diameter of 10-30 micrometers (.mu.m) and a
fiber fineness of 1-10 dpf.
[0035] The fiber structure of the deodorizing fiber of the present
disclosure is a core-sheath structure, and the deodorizing powder
is wrapped in the fiber sheath portion, so that after dewatering
for 10 times, the deodorizing effect of the deodorizing fiber can
be maintained. Therefore, the deodorizing fiber of the present
disclosure can be widely used in the fiber application industry,
and includes textile products for underwear, home furnishings, and
outdoor sports.
[0036] Hereinafter, a plurality of embodiments (embodiments 1-4)
for producing the modified deodorizing powder and processing into
the deodorizing masterbatch and deodorizing fiber are provided, and
a comparative embodiment is provided to assist in explaining the
purpose, efficacy, and principle of the present disclosure.
[0037] The modified deodorizing powder and the deodorizing fiber
produced in each of the embodiments and the comparative embodiment
were evaluated for physical properties according to the following
methods.
[0038] 1. Pressure test. The deodorizing masterbatch was diluted to
8% by the neat PET resin, and the filter pressure value tester
(brand: LabTech, model: LTF34-GP) was used to evaluate the pressure
value of the deodorizing masterbatch, and the filter was 15 .mu.m.
The lower the pressure value, the better the dispersion of the
deodorizing powder in the polyester resin.
[0039] 2. Deodorization test. According to ISO 17299, the sample
size is 10 cm.times.10 cm knitted fabric, regardless of front or
back, the temperature is 20.degree. C., 65% RH, the sample is
allowed to sit for 24 hours, with 3 L Tedlar-bag through different
concentrations of the gas (initial concentration of ammonia is 100
ppm or acetic acid is 30 ppm). A test tube is used for measurement,
and the gas concentration in the bag after 120 minutes is recorded
to calculate the percentage of gas reduction.
First Embodiment
[0040] 1. Modification of deodorizing powder. According to
formulation No. A1 of Table 1, the deodorized powders
Al.sub.2O.sub.3, ZnO, and SiO.sub.2 were placed in a stirred tank
with fence type stirring blades and stirred at 250 rpm. Based on
the weight of the deodorizing powder, 1 wt % of the modifier
3-acryloxypropyltrimethoxysilane was dissolved in a 1:6 volume
ratio of the modifier to the isopropanol and gradually dropped into
the deodorizing powder. The blade stirring rate was adjusted to
1000 rpm, and the dropwise acceleration rate was 1 ml/min. After
the completion of the dropwise addition, the stirring tank was
heated to 120.degree. C. and stirred for 2 hours to volatilize the
isopropanol, so as to obtain the modified deodorizing powder.
[0041] 2. Preparation of deodorizing masterbatch. According to the
formulation of Table 2, 79.5 wt % of PET polyester resin, 20 wt %
of modified deodorizing powder A1, and 0.5 wt % of
bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite
(hereinafter referred to as antioxidant RCPEP36) were used as a raw
material and were melt-granulated by a twin-screw extruder.
[0042] 3. Production of deodorizing fiber. The fiber size is
75D/72F, the core is dried polyester, the sheath is dried
deodorizing masterbatch, and the core-sheath ratio is 50/50. The
spinning temperature is 280.degree. C., and the spinning speed is
2500 m/min. A partially stretched yarn (POY) is produced, and then
processed into a draw textured yarn (DTY), woven into a knitted
fabric, and was dyed and washed with water.
[0043] The pressure value of the produced deodorizing masterbatch
was measured, and the results are shown in Table 2. After the
deodorizing masterbatch was spun and knitted, the deodorizing
effect was measured as shown in Tables 3 and 4 after dyeing. After
the knitted fabric was washed for 10 times, the deodorizing effect
of the test was as shown in Table 5. The deodorizing effect was
maintained at the initial level, and the deodorizing effect of the
yarn before washing or after washing was not affected.
Second Embodiment
[0044] 1. The modified deodorizing powder was obtained in the same
manner as in the first embodiment, except that the modifier was
added in an amount of 5 wt % based on the weight of the deodorizing
powder (Table 1, Formula No. A2).
[0045] 2. Referring to the raw materials formula of Table 2, 79.5
wt % of PET polyester resin and 20 wt % of modified deodorizing
powder A2, and 0.5 wt % of antioxidant RCPEP36 were used as raw
materials, and were melted and granulated by a twin-screw extruder
to obtain deodorizing masterbatch.
[0046] The pressure value of the produced deodorizing masterbatch
was measured, and the results are shown in Table 2. After the
deodorizing masterbatch was spun and knitted, the deodorizing
effect was measured as shown in Tables 3 and 4 after dyeing. After
the knitted fabric was washed for 10 times, the deodorizing effect
of the test was as shown in Table 5. The deodorizing effect was
maintained at the initial level, and the deodorizing effect of the
yarn before washing or after washing was not affected.
Third Embodiment
[0047] 1. The modified deodorizing powder was obtained in the same
manner as in the first embodiment, except that the modifier was
added in an amount of 10 wt % based on the weight of the
deodorizing powder (Table 1, Formula No. A3). 2. Referring to the
raw materials formula of Table 2, 79.5 wt % of PET polyester resin
and 20 wt % of modified deodorizing powder A3, and 0.5 wt % of
antioxidant RCPEP36 were used as raw materials, and were melted and
granulated by a twin-screw extruder to obtain deodorizing
masterbatch.
[0048] The pressure value of the produced deodorizing masterbatch
was measured, and the results are shown in Table 2. After the
deodorizing masterbatch was spun and knitted, the deodorizing
effect was measured as shown in Tables 3 and 4 after dyeing. After
the knitted fabric was washed for 10 times, the deodorizing effect
of the test was as shown in Table 5. The deodorizing effect was
maintained at the initial level, and the deodorizing effect of the
yarn before washing or after washing was not affected.
Fourth Embodiment
[0049] 1. The modified deodorizing powder was obtained in the same
manner as in the first embodiment, except that the modifier was
stearyl titanate and was added in an amount of 1 wt % based on the
weight of the deodorizing powder (Table 1, Formula No. A4).
[0050] 2. Referring to the raw materials formula of Table 2, 79.5
wt % of PET polyester resin and 20 wt % of modified deodorizing
powder A4, and 0.5 wt % of antioxidant RCPEP36 were used as raw
materials, and were melted and granulated by a twin-screw extruder
to obtain deodorizing masterbatch.
[0051] The pressure value of the produced deodorizing masterbatch
was measured, and the results are shown in Table 2. After the
deodorizing masterbatch was spun and knitted, the deodorizing
effect was measured as shown in Tables 3 and 4 after dyeing. After
the knitted fabric was washed for 10 times, the deodorizing effect
of the test was as shown in Table 5. The deodorizing effect was
maintained at the initial level, and the deodorizing effect of the
yarn before washing or after washing was not affected.
First Comparative Example
[0052] 1. The deodorizing powder was not modified (Table 1, Formula
No. A5).
[0053] 2. Referring to the raw materials formula of Table 2, 79.5
wt % of PET polyester resin and 20 wt % of deodorizing powder A5,
and 0.5 wt % of antioxidant RCPEP36 were used as raw materials, and
were melted and granulated by a twin-screw extruder to obtain
deodorizing masterbatch.
[0054] The pressure value of the produced deodorizing masterbatch
was measured, and the results are shown in Table 2. After the
deodorizing masterbatch was spun and knitted, the deodorizing
effect was measured as shown in Tables 3 and 4 after dyeing. After
the knitted fabric was washed for 10 times, the deodorizing effect
of the test was as shown in Table 5. The deodorizing effect was
maintained at the initial level, and the deodorizing effect of the
yarn before washing or after washing was not affected.
Results
[0055] 1. After the deodorizing powders of the first embodiment to
the third embodiment were treated with the modifier
3-acryloxypropyltrimethoxysilane, and the deodorizing powder of the
fourth embodiment was treated with the modifier stearyl titanate,
the deodorizing powder of each embodiment was mixed and granulated
with resin and the dispersing agent. After the deodorizing
masterbatch was dried, the pressure value was evaluated by a filter
pressure tester, and the test value (see Table 2) was less than or
equal to 0.5 bar/g, which represents well dispersion of the
deodorizing powder in the polyester resin.
[0056] 2. The deodorizing powder of the first comparative
embodiment was not modified and was directly mixed and granulated
with resin and the dispersing agent. After the deodorizing
masterbatch was dried, the pressure value was evaluated by a filter
pressure tester, and the test value (see Table 2) was 2.4 bar/g and
over than 0.5 bar/g, which represent poor dispersion of the
deodorizing powder in the polyester resin.
[0057] 3. According to the above two conclusions, the deodorizing
powder treated by the modifier can effectively help the deodorizing
powder to be dispersed in the polyester resin, reduce the
phenomenon of powder agglomeration, improve on the issue of rising
pressure, and contribute to the smoothness of the spinning process
of the deodorizing fiber.
[0058] 4. The deodorizing masterbatch obtained from the first
embodiment to the fourth embodiment were subjected to core-sheath
type composite spinning after drying, the core was polyester, and
the sheath was deodorizing masterbatch. After being rolled, the
deodorizing fiber was processed into draw textured yarn, woven into
a knitted fabric, and was measured after dyed. The deodorizing
effect of the yarn made of surface-modified deodorizing powder was
obviously greater than the yarn made of deodorizing powder that was
not modified, as shown in Table 3. After washing for 10 times, the
same results were obtained, as shown in Table 4.
[0059] 5. Compared with the first comparative embodiment, the
deodorizing effect of the first embodiment to the fourth embodiment
had no obvious change before and after washing, since the
deodorizing powder was directly added into the fiber and combined
with resin, rather than post-processing (impregnation or coating)
on the surface of the knitted fabric through an adhesive agent.
Therefore, the deodorizing effect of the first embodiment to the
third embodiment before and after washing is no different, as shown
in Table 5.
TABLE-US-00001 TABLE 1 Modified deodorizing powder formula Number
of modified powder formula Item Material (wt %) A1 A2 A3 A4 A5
Modified Deodorizing Al.sub.2O.sub.3, ZnO, SiO.sub.2 99 95 90 99
100 deodorizing powder powder Modifier 3-acryloxypropyl 1 5 10 --
-- trimethoxysilane stearyl titanate -- -- -- 1 --
TABLE-US-00002 TABLE 2 Deodorizing masterbatch formula (unit: wt %)
and pressure First First Second Third Fourth Comparative Item
Material Embodiment Embodiment Embodiment Embodiment Example
Polyester PET(IV = 0.8) 79.5 79.5 79.5 79.5 79.5 Modified A1 20 --
-- -- -- deodorizing A2 -- 20 -- -- -- powder A3 -- -- 20 -- -- A4
-- -- -- 20 -- A5 -- -- -- -- 20 Antioxidants RC PEP 36*.sup.1 0.5
0.5 0.5 0.5 0.5 Pressure -- 0.3 0.02 0.002 0.4 2.4 value (bar/g)
Note 1: RC PEP 36 represents bis(2,6-di-tert-butyl-4-methylphenyl)
entaerythritol diphosphite.
TABLE-US-00003 TABLE 3 Deodorizing fiber (knitted fabric) and the
deodorizing effect after 2 hours First First Second Third Fourth
Comparative Item blank Embodiment Embodiment Embodiment Embodiment
Example Fiber specification 75D/72F 75D/72F 75D/72F 75D/72F 75D/72F
75D/72F Ammonia Concentration 92 2 1 2 2 10 (Initial after 2 hr
concentration = (ppm) 100 ppm) Reduction NA 98 99 98 98 89 rate (%)
Acetic acid Concentration 17 1 2 1 1 5 (Initial after 2 hr
concentration = (ppm) 30 ppm) Reduction NA 94 88 94 94 70 rate (%)
Reduction rate = (S.sub.b - S.sub.m)/S.sub.b*100% S.sub.b: test
value of blank, S.sub.m: test value of embodiment
TABLE-US-00004 TABLE 4 Deodorizing fiber (knitted fabric) washed 10
times and the deodorizing effect after 2 hours First First Second
Third Fourth Comparative Item blank Embodiment Embodiment
Embodiment Embodiment Example Fiber specification 75D/72F 75D/72F
75D/72F 75D/72F 75D/72F 75D/72F Ammonia Concentration 92 5 4 4 3 14
(Initial after 2 hr concentration = (ppm) 100 ppm) Reduction NA 95
96 96 97 85 rate (%) Acetic acid Concentration 17 2 2 3 3 6
(Initial after 2 hr concentration = (ppm) 30 ppm) Reduction NA 88
88 82 82 65 rate (%) Reduction rate = (S.sub.b -
S.sub.m)/S.sub.b*100% S.sub.b: test value of blank, S.sub.m: test
value of embodiment
TABLE-US-00005 TABLE 5 Comparison of deodorizing effect of
deodorizing fiber (knitted fabric) before and after washing for 10
times First Before and First Second Third Fourth Comparative Item
after washed Embodiment Embodiment Embodiment Embodiment Example
Fiber -- 75D/72F 75D/72F 75D/72F 75D/72F 75D/72F specification
Ammonia Deodorization 98 99 98 98 89 reduction concentration
rate(%) before washed Deodorization 95 96 97 97 85 concentration
after washed Acetic acid Deodorization 94 88 94 94 70 reduction
concentration rate(%) before washed Deodorization 88 88 82 82 65
concentration after washed
[0060] The foregoing description of the exemplary embodiments of
the disclosure has been presented only for the purposes of
illustration and description and is not intended to be exhaustive
or to limit the disclosure to the precise forms disclosed. Many
modifications and variations are possible in light of the above
teaching.
[0061] The embodiments were chosen and described in order to
explain the principles of the disclosure and their practical
application so as to enable others skilled in the art to utilize
the disclosure and various embodiments and with various
modifications as are suited to the particular use contemplated.
Alternative embodiments will become apparent to those skilled in
the art to which the present disclosure pertains without departing
from its spirit and scope.
* * * * *