TECHNICAL FIELD
[0001] The present invention relates to a fiber structure with excellent heat retention
and wearing comfort and a garment obtained by using the same, and in particular, to
a fiber structure to be used preferably in underwear, T-shirts, etc. which are directly
in contact with the skin of a human.
BACKGROUND ART
[0002] Conventionally, as a means for improving heat retention of a garment and the like,
many garments having a three-layer structure including a lining, a heat retentive
material such as an inner cotton, and an outer fabric are known (see Patent Document
1). However, the outer fabric of these garments is used for improving wind protection
and heat retention, which causes a stuffy feeling when worn, and is not suitable to
be used for innerwear due to a fabric thickness caused by the three-layer structure.
[0003] In addition, as for a heat retention fiber product suitable to be used for innerwear,
a fiber structure containing a viscose rayon fiber, a cation dyeable polyester fiber,
a polyacrylic synthetic fiber, and a spandex fiber is known (see Patent Documents
2 and 3). However, there is still a problem in that these fiber structures have a
low heat retention rate. Therefore, there is a demand for a fiber product having higher
heat retention.
PRIOR ART DOCUMENTS
PATENT DOCUMENTS
[0004]
Patent Document 1: Japanese Examined Patent Publication No. 7-59762
Patent Document 2: International Publication No. 2014/192648
Patent Document 3: Japanese Patent No. 5453863
SUMMARY OF THE INVENTION
PROBLEMS TO BE SOLVED BY THE INVENTION
[0005] In order to solve the above problems, the present inventors intensively studied and
found that, with a yarn in which viscose rayon is blended, that is, by using a viscose
rayon fiber, a cation dyeable polyester fiber, a polyacrylic synthetic fiber, and
a spandex fiber and performing a raising process, a fiber structure having excellent
heat retention and wearing comfort can be obtained.
[0006] An object of the present invention is to provide a fiber structure having excellent
heat retention and wearing comfort and a garment using the same.
SOLUTIONS TO THE PROBLEMS
[0007] In order to solve these problems, the fiber structure of the present invention is
a fiber structure containing: a viscose rayon fiber in an amount of more than 15%
by mass and less than 40% by mass; a cation dyeable polyester filament yarn in an
amount of more than 10% by mass and less than 45% by mass; a polyacrylic synthetic
fiber in an amount of more than 25% by mass and less than 60% by mass; and a spandex
fiber in an amount of more than 3% by mass and less than 15% by mass, wherein the
fiber structure has a nap formed on a front surface or a back surface thereof.
[0008] In a preferred aspect of the fiber structure of the present invention, the fiber
structure is formed of a knitted fabric having a two-layer structure.
[0009] In a preferred aspect of the fiber structure of the present invention, a single fiber
fineness of the cation dyeable polyester filament yarn is 0.6 dtex or more.
[0010] In a preferred aspect of the fiber structure of the present invention, a heat retention
rate of the fiber structure is 25% or more.
[0011] In a preferred aspect of the fiber structure of the present invention, a hygroscopic
heat generation of the fiber structure is 2.2°C or more.
[0012] In a preferred aspect of the fiber structure of the present invention, a fluff adhesion
of the surface of the fiber structure having the nap is 4.0 grade or more.
[0013] In a preferred aspect of the fiber structure of the present invention, a stretch
recovery percentage of the fiber structure is 80% or more.
[0014] In the present invention, a garment can be obtained by using the fiber structure.
EFFECTS OF THE INVENTION
[0015] According to the present invention, it is possible to obtain a fiber structure having
excellent heat retention and excellent wearing comfort to be used as innerwear such
as underwear, T-shirts, etc., as compared to the product of the related art. In addition,
according to the present invention, it is possible to obtain a garment having excellent
heat retention and excellent wearing comfort by using the fiber structure.
[0016] In the present invention, the viscose rayon fiber adsorbs a water vapor generated
from a human body and a kinetic energy of a water molecule is converted into heat
energy, such that warmth of the generated heat can be kept by heat insulation effects
of the polyacrylic synthetic fiber and an air pocket formed between fibers of a raised
surface.
EMBODIMENTS OF THE INVENTION
[0017] Next, a fiber structure according to an embodiment of the present invention will
be described in detail.
[0018] The fiber structure of the present invention is a fiber structure containing: a viscose
rayon fiber in an amount of more than 15% by mass and less than 40% by mass; a cation
dyeable polyester filament yarn in an amount of more than 10% by mass and less than
45% by mass; a polyacrylic synthetic fiber in an amount of more than 25% by mass and
less than 60% by mass; and a spandex fiber in an amount of more than 3% by mass and
less than 15% by mass, wherein the fiber structure has a nap formed on a front surface
or a back surface thereof.
[0019] The fiber structure of the present invention contains the viscose rayon fiber in
an amount of more than 15% by mass and less than 40% by mass. The viscose rayon fiber
is contained in the amount as described above, such that it is possible to obtain
a fiber structure excellent in durability and having a hygroscopic heat generation
performance. Since the fiber structure has the hygroscopic heat generation performance,
the fiber structure is heated by a water vapor generated from a human body when worn,
which can raise a clothing temperature. In a case where the amount of viscose rayon
fiber is 40% by mass or more, the fiber structure is likely to be wrinkled after being
washed due to a property of the viscose rayon fiber. In addition, in a case where
the amount of viscose rayon fiber is 15% by mass or less, the hygroscopic heat generation
performance of the fiber structure is not sufficiently exhibited.
[0020] The amount of viscose rayon fiber is preferably 15 to 30% by mass and more preferably
15 to 25% by mass. When the amount of viscose rayon fiber is more than 15% by mass,
it is possible to obtain a fiber structure having a more excellent hygroscopic heat
generation performance.
[0021] The viscose rayon fiber used in the present invention is preferably used in a form
of a spun yarn from the viewpoint of improving the heat retention. In addition, in
this case, a count of the spun yarn is preferably 30 S to 100 S in a cotton count
because the fiber structure is preferably used for underwear, T-shirts, and the like
which are directly in contact with the skin of a human. More preferably, a spun yarn
with a cotton count of 30 S to 60 S is used from the viewpoint of a thickness and
heat retention of the fiber structure.
[0022] In addition, a single fiber fineness of a spun yarn is preferably 0.5 dtex to 2.5
dtex from the viewpoint of usage.
[0023] The viscose rayon fiber referred in the present invention is a regenerated fiber
which is spun by a viscose method and is a spun yarn such as a viscose rayon fiber
and a saponified acetate fiber.
[0024] The fiber structure of the present invention contains the cation dyeable polyester
filament yarn in an amount of more than 10% by mass and less than 45% by mass. The
cation dyeable polyester filament yarn is used, such that it is possible to perform
dyeing at a lower temperature than in a case of a general polyester fiber and to perform
dyeing with the same dye as used for a polyacrylic synthetic fiber. In addition, the
cation dyeable polyester filament yarn can obtain an excellent color developing ability
and fastness at a temperature of 105°C to 115°C. Therefore, deterioration of the spandex
fiber due to heat can be prevented.
[0025] In addition, the amount of cation dyeable polyester fiber is more than 10% by mass,
such that an occurrence of wrinkles on the fabric structure after being washed is
suppressed. When the amount of cation dyeable polyester filament yarn is 45% by mass
or more, the hygroscopic heat generation performance of the fiber structure is lowered
due to a property of the cation dyeable polyester fiber. In addition, in a case where
the amount of cation dyeable polyester filament yarn is 10% by mass or less, the fiber
structure is likely to be wrinkled after being washed.
[0026] The amount of cation dyeable polyester filament yarn is preferably 20 to 40% by mass
and more preferably 20 to 35% by mass.
[0027] In a production of the cation dyeable polyester filament yarn of the present invention,
a method of producing polyester which is generally known is used. In addition, cationic
dyeing of conventional polyester is achieved, for example, by copolymerizing 1.0 to
3.0% by mole of a 5-sodium sulfoisophthalate component with the polyester as generally
known.
[0028] A total fineness of a filament yarn bundle formed of the cation dyeable polyester
filament yarns used in the present invention is preferably 50 dtex to 200 dtex because
the fiber structure is used for underwear, T-shirts, and the like which are directly
in contact with the skin of a human. The total fineness is more preferably 60 to 180
dtex and the total fineness is particularly preferable in the range of 70 to 160 dtex.
As the cation dyeable polyester filament yarns used in the present invention, a polyester
multifilament having the number of filament yarns of 36 to 192 is preferably used.
[0029] The fiber structure of the present invention contains the polyacrylic synthetic fiber
in an amount of more than 25% by mass and less than 60% by mass. The polyacrylic synthetic
fiber is contained in an amount of more than 25% by mass, which can provide the fiber
structure with heat retention. When the amount of polyacrylic synthetic fiber is 60%
by mass or more, the heat retention of the fiber structure is reduced due to a property
of the polyacrylic synthetic fiber, resulting in lowering of the hygroscopic heat
generation performance. In addition, in a case where the polyacrylic synthetic fiber
is 25% by mass or less, a mixing ratio of micro acryl, which exhibits a heat insulation
effect, to the fiber structure is decreased, and thus the heat retention is not sufficiently
exhibited.
[0030] The amount of polyacrylic synthetic fiber is preferably 30 to 55% by mass and more
preferably 35 to 50% by mass.
[0031] A single fiber fineness of the polyacrylic synthetic fiber used in the present invention
is preferably 0.6 to 2.2 dtex. For a softer texture and improvement of heat retention,
the polyacrylic synthetic fiber preferably has a small fineness, but in a case where
a single fiber fineness of the polyacrylic synthetic fiber is less than 0.6 dtex,
it may be difficult to perform spinning and a strength of the spun yarn may be reduced.
In addition, when the single fiber fineness exceeds 2.2 dtex, a texture tends to be
stiff for use particularly of innerwear and the like which are directly in contact
with the skin of a human. In this respect, the single fiber fineness of the polyacrylic
synthetic fiber is more preferably 0.6 dtex to 1.5 dtex.
[0032] The polyacrylic synthetic fiber used in the present invention is preferably used
in the form of a spun yarn from the viewpoint of improving the heat retention. In
addition, in this case, a count of the spun yarn is preferably 30 S to 100 S in a
cotton count because the fiber structure is used for underwear, T-shirts, and the
like which are directly in contact with the skin of a human. More preferably, a spun
yarn with a cotton count of 30 S to 60 S is used from the viewpoint of a thickness
and heat retention of the fiber structure. A fiber length is generally used in the
range of 38 to 52 mm.
[0033] In addition, in the present invention, a spun yarn obtained by mixing the viscose
rayon fiber or/and the polyacrylic synthetic fiber is preferably used for the polyacrylic
synthetic fiber. The polyacrylic fiber referred in the present invention refers to
a polyacrylic fiber obtained by copolymerizing or adding other compounds to an acrylic
composition in addition to a regular type polyacrylic fiber formed of polyacrylonitrile,
and an example of the polyacrylic fiber includes a polyacrylic fiber modified to an
anti-pilling type, a water absorbing type, or the like.
[0034] The fiber structure of the present invention contains the spandex fiber in an amount
of more than 3% by mass and less than 15% by mass. Therefore, a moderate elongation
and gaps between knitted fabric loops can be increased, such that it is possible to
smoothly follow movements of a body. As a result, wearing comfort is more effectively
improved. The amount of spandex fiber is preferably 4 to 13% by mass and more preferably
in a range of 4 to 12% by mass.
[0035] As the spandex yarn used for the present invention, the one with an elastic recovery
percentage of 90% or more at the time of stretching of 200% is preferable. When the
elastic recovery percentage at the time of stretching of 200% is less than 90%, a
knitted fabric may have come loose when repeatedly worn. In addition, a knit structure
and a knit density can be arbitrarily set depending on an intended use.
[0036] A total fineness of filament yarns formed of the spandex fiber used in the present
invention is preferably in a range of 15 dtex to 50 dtex and more preferably in a
range of 20 to 45 dtex because the fiber structure is used for underwear, T-shirts,
and the like which are directly in contact with the skin of a human. In addition,
the spandex fiber is used in a form of general filament yarn (filament) and the number
of filaments in the spandex fiber is preferably 1 to 3.
[0037] Further, in the fiber structure of the present invention, it is important that the
fiber structure has a nap formed on a front surface or a back surface thereof. A raising
process is performed to raise a surface layer of the fiber structure and form a nap
thereon, thereby obtaining a fabric thickness, such that excellent heat retention
can be realized. As a surface which is subjected to the raising process, a surface
where the cation dyeable polyester filament yarns are mainly exposed to the surface
layer is preferable. In a case of raising a surface of the fiber structure where spun
yarns are exposed to the surface layer, the spun yarns may be cut and thus fine fluff
may be generated by the raising process.
[0038] In addition, the cation dyeable polyester filament yarn having a single fiber fineness
of 0.6 dtex or more is preferable from the viewpoint of suppressing a fluff generation.
In a case where the single fiber fineness is less than 0.6 dtex, fluff may be generated
by the raising process similarly to the case of spun yarns. In addition, the single
fiber fineness of the cation dyeable polyester filament yarn is preferably 6.0 dtex
or less and more preferably 0.8 to 5.5 dtex because the fiber structure is used for
underwear, T-shirts, and the like which are directly in contact with the skin of a
human.
[0039] An example of the fiber structure of the present invention may preferably be a knitted
fabric. In addition, the viscose rayon fiber and the polyacrylic synthetic fiber can
be used as either a filament yarn or a spun yarn; a preferred form of the fiber structure
is a knitted fabric in which a spun yarn obtained by mixing a viscose rayon fiber
and a polyacrylic synthetic fiber, a cation dyeable polyester filament yarn, and a
spandex fiber are knitted to be used for underwear, T-shirts, and the like which are
directly in contact with the skin, to achieve various functions.
[0040] The fiber structure of the present invention is preferably formed of a knitted fabric
having a two-layer structure. In a case where the fiber structure has a single layer
structure, a fabric is thin and is prone to lack of heat retention, and in addition,
spun yarns are mixedly existed on a raised surface, which generate fluff. In addition,
in a case where the fiber structure has a three-layer or more structure, the fiber
structure is not suitable to be used for innerwear such as T-shirts, underwear, or
the like due to a fabric thickness. Accordingly, to provide both heat retention and
fluff generation suppression, in particular, a knitted fabric having a two-layer structure
is preferable. The knitted fabric having a two-layer structure of the present invention
is a knitted fabric which is knitted by a circular knit machine including a double
cylinder, and knittings such as smooth knitting, double jacquard knitting, double
pique knitting, ponte rome knitting, and the like are preferably used.
[0041] A preferred thickness of the fiber structure of the present invention is in a range
of 1.30 to 1.80 mm.
[0042] The fiber structure of the present invention preferably has a heat retention rate
of 20% or more. The heat retention rate is preferably as high as possible, and if
the heat retention rate is 20% or more, a wearer can feel warm when wearing it. The
heat retention rate is an index indicating whether a fabric diffuses heat with ease
or difficulty. When the amount of cation dyeable polyester filament yarn or polyacrylic
synthetic fiber having a low heat conductivity is increased, the heat retention rate
is increased, but the hygroscopic heat generation performance is decreased due to
a property of the fiber. More preferably, the heat retention rate is 25% or more.
[0043] In the present invention, furthermore, the hygroscopic heat generation performance
of the fiber structure of the present invention is preferably 2.2°C or more. The hygroscopic
heat generation performance is preferable as high as possible, and if the hygroscopic
heat generation performance is 2.2°C or more, a wearer can feel warm when wearing
it. Dry air (humidity: 10% RH or less) passed through a silica-gel container is fed
to dry a specimen for 30 minutes or more, and then a maximum arrival temperature B
of a specimen surface while air with a humidity of about 90% RH passed through ion
exchange water is fed for 30 minutes, with respect to a surface temperature A when
a specimen temperature is stable, is read, such that a temperature (°C) of a difference
B - A is used as a hygroscopic heat generation performance. Therefore, when the amount
of viscose rayon fiber having a high hygroscopic property is increased, the hygroscopic
heat generation performance is high, but when the amount of viscose rayon fiber is
increased, the fiber structure is likely to be wrinkled after being washed and heat
retention is reduced due to the property of the viscose rayon fiber.
[0044] In the fiber structure of the present invention, a nap is formed on a front surface
or a back surface of the fiber structure by performing a raising process, but a fluff
adhesion of a napped surface subjected to the raising process is preferably 4.0 grade
or more. The fluff adhesion is an index indicating whether fine fluff generated on
a fiber structure in a raising process is adhered to other garments with ease or difficulty
when worn. In a case where a spun yarn or a filament with a small single fiber fineness
is raised mainly, a yarn is likely to be cut and thus fluff is likely to be generated.
In the present invention, it is preferable that a surface where the cation dyeable
polyester filament yarns having a single fiber fineness of 0.6 dtex or more are exposed
to the surface layer, is subjected to the raising process.
[0045] In addition, a stretch recovery percentage of the fiber structure of the present
invention is preferably 80% or more. The stretch recovery percentage is a numerical
value of the property in which a fabric is stretched at a certain load and then left
to return to the original size thereof. When the stretch recovery percentage is less
than 80%, a garment may be loose after being worn, and the garment may be not fitted
when being worn again.
[0046] Further, in the fiber structure of the present invention, in addition to the viscose
rayon fiber, the cation dyeable polyester filament yarn, the polyacrylic synthetic
fiber, and the spandex fiber described above, a cation dyestuff non-dyeable polyester
fiber, a polyester fiber obtained by copolymerizing polyester with a third component,
a polyamide fiber, an acetate fiber, a natural cellulose fiber such as cotton, hemp,
pulp, and the like, a regenerated cellulose fiber other than viscose rayon, a protein
fiber such as wool and the like can be used. The fiber described above constituting
the fabric structure may be, for example, mixed, blended, mixed-woven, and cross-knitted.
EXAMPLES
[0047] Next, the fiber structure of the present invention will be described in detail based
on examples. Here, methods of evaluating the respective properties in examples are
as described below.
(1) Hygroscopic heat generation performance:
[0048] A hygroscopic heat generation performance is read with a recorder in such a manner
that a specimen of about 10 cm x 10 cm in size is placed in a sealed container and
a surface temperature sensor is mounted so that a temperature of the specimen can
be measured. After starting to measure a temperature of the specimen, dry air (humidity:
10% RH or less) passed through a silica-gel container is fed from a room atmosphere
at a measurement room temperature of 20°C or less to dry the specimen. The specimen
is dried for 30 minutes or more, a maximum arrival temperature B of a specimen surface
while air with a humidity of about 90% RH passed through ion exchange water is fed
for 30 minutes, with respect to a surface temperature A when a specimen temperature
is stable, is read, such that a difference B - A is used as a hygroscopic heat generation
performance (°C).
(2) Fluff adhesion:
[0049] A fluff adhesion test is measured according to a cellophane tape method. An adhesion
surface of a cellophane tape is put on a napped surface of the specimen so as to be
in contact therewith in a lateral direction, a load is applied so that the pressure
is 3.9 kpa, and left for 5 seconds. The cellophane tape is gently peeled off and the
same operation is repeated 5 times at other points. The cellophane tape to be used
is No. CT-18/LP-18 having a width of 18 mm obtained by NICHIBAN CO., LTD. A grade
is determined by comparing an amount of fluff adhered to the cellophane tape with
a standard scale.
(3) Stretch recovery percentage:
[0050] A stretch recovery percentage is measured according to a method in JIS L1096 (2010)
8.16.2 B-1. Recovery percentages after 30 seconds and after 1 hour are measured as
the stretch recovery percentage in the measurement, but the stretch recovery percentage
after 1 hour is shown as that of the present invention.
(4) Heat retention rate:
[0051] A heat retention rate is measured according to JIS L1096 (2010) 8.27 heat retention
8.27.1 A method (isothermal method).
(Example 1)
[0052] 30% by mass of viscose rayon staple (1.4 dtex, 38 mm) and 70% by mass of polyacrylic
fiber staple (1.0 dtex, 45 mm) were mixed by carding to obtain a spun yarn of 30 s.
[0053] The spun yarn thus obtained, a cation dyeable polyester filament yarn (84 dtex-72
filaments), and a spandex fiber (44 dtex-2 filaments) were cross-knitted by a double
knitting machine with a cylinder diameter of 76.2 cm and the number of gauges of 18
gauges/2.54 cm to obtain a greige.
[0054] The greige thus obtained was processed by processes of heat-setting (185°C, 30 seconds),
raising, scouring (70°C), dyeing (115°C), drying (130°C), and heat-setting (130°C).
Only a surface where the cation dyeable polyester filament yarn was exposed to the
surface layer was subjected to the raising process to obtain a fabric (fiber structure).
As a result, the fabric (fiber structure) with a fabric mass of 330 g/m
2 containing 45% by mass of the polyacrylic fiber, 23% by mass of the viscose rayon
fiber, 27% by mass of the cation dyeable polyester filament yarn, and 5% by mass of
the spandex fiber in mass ratio in the fabric, was obtained.
[0055] The heat retention rate of the fabric obtained in Example 1 was evaluated. The results
are shown in Table 1. The fiber structure having hygroscopic heat generation performance,
fluff adhesion, stretch recovery percentage, and heat retention rate which are all
good, and having high functionality as innerwear, was obtained.
(Example 2)
[0056] 30% by mass of viscose rayon staple (1.4 dtex, 38 mm) and 70% by mass of polyacrylic
fiber staple (1.0 dtex, 45 mm) were mixed by carding to obtain a spun yarn of 40 s.
[0057] The spun yarn thus obtained, a cation dyeable polyester filament yarn (84 dtex-96
filaments), and a spandex fiber (44 dtex) were cross-knitted by a double knitting
machine with a cylinder diameter of 76.2 cm and the number of gauges of 18 gauges/2.54
cm to obtain a greige.
[0058] The greige thus obtained was processed by processes of heat-setting (185°C, 30 seconds),
raising, scouring (70°C), dyeing (115°C), drying (130°C), and heat-setting (130°C).
Only a surface where the cation dyeable polyester filament yarn was exposed to the
surface layer was subjected to the raising process to obtain a fabric (fiber structure).
As a result, the fabric (fiber structure) with a fabric mass of 280 g/m
2 containing 42% by mass of the polyacrylic fiber, 18% by mass of the viscose rayon
fiber, 31% by mass of the cation dyeable polyester, and 9% by mass of the spandex
fiber in mass ratio in the fabric, was obtained.
[0059] The heat retention rate of the fabric obtained in Example 2 was evaluated. The results
are shown in Table 1. The fiber structure having high functionality was obtained similarly
to Example 1. The fabric mass is light by 50 g/m
2, as compared to Example 1, but the single fiber fineness of the cation dyeable polyester
filament yarn is small, such that even though the fabric mass is light, the fiber
structure having a fluffy raised surface and having the same heat retention was obtained.
(Example 3)
[0060] 30% by mass of viscose rayon staple (1.4 dtex, 38 mm) and 70% by mass of polyacrylic
fiber staple (1.0 dtex, 45 mm) were mixed by carding to obtain a spun yarn of 40 s.
[0061] The spun yarn thus obtained, a cation dyeable polyester filament yarn (84 dtex-72
filaments), and a spandex fiber (44 dtex) were cross-knitted by a double knitting
machine with a cylinder diameter of 76.2 cm and the number of gauges of 18 gauges/2.54
cm to obtain a greige.
[0062] The greige thus obtained was processed by processes of heat-setting (185°C, 30 seconds),
raising, scouring (70°C), dyeing (115°C), drying (130°C), and heat-setting (130°C).
Only a surface where the cation dyeable polyester filament yarn was exposed to the
surface layer was subjected to the raising process to obtain a fabric (fiber structure).
As a result, the fabric (fiber structure) with a fabric mass of 300 g/m
2 containing 42% by mass of the polyacrylic fiber, 18% by mass of the viscose rayon
fiber, 31% by mass of the cation dyeable polyester filament yarn, and 9% by mass of
the spandex fiber in mass ratio in the fabric, was obtained.
[0063] The heat retention rate of the fabric obtained in Example 3 was evaluated. The results
are shown in Table 1. The fiber structure having high heat retention was obtained
similarly to Examples 1 and 2. Although the fineness of the spun yarn is smaller than
that of Example 1 and the fabric mass becomes small, the fiber structure having a
heat retention rate of 31% and high heat retention as innerwear was obtained.
(Comparative Example 1)
[0064] A fabric (fiber structure) was obtained in the same manner as in Example 1 except
that a spun yarn was obtained by using only acrylic staple without using viscose rayon
staple as a spun yarn. As a result of performing similar evaluations by using the
obtained fabric (fiber structure), it could be confirmed that the fabric has heat
retention but a hygroscopic heat generation of the fabric deteriorates as shown in
Table 2.
(Comparative Example 2)
[0065] In Example 1, only a spun yarn and a spandex fiber were cross-knitted without using
the cation dyeable polyester filament yarn. In addition, the raising process was performed
on a surface where the spun yarns are exposed to the surface layer. A fabric (fiber
structure) was obtained in the same manner as in Example 1 except for these conditions.
As a result of performing similar evaluations by using the obtained fabric, it could
be confirmed that the fabric has heat retention but a fluff adhesion of the fabric
deteriorates as shown in Table 2.
(Comparative Example 3)
[0066] A fabric (fiber structure) was obtained in the same manner as in Example 1 except
that a spun yarn was obtained by using only viscose rayon staple without using acrylic
staple as a spun yarn. As a result of performing similar evaluations by using the
obtained fabric, it could be confirmed that the fabric has a hygroscopic heat generation
performance but heat retention of the fabric deteriorates as shown in Table 2.
(Comparative Example 4)
[0067] A fabric (fiber structure) was obtained in the same manner as in Example 1 except
that only a spun yarn and a cation dyeable polyester filament yarn were cross-knitted
without using the spandex fiber. As a result of performing similar evaluations by
using the obtained fabric, it could be confirmed that the fabric has heat retention
but a stretch recovery percentage of the fabric deteriorates as shown in Table 2.
(Comparative Example 5)
[0068] A fabric (fiber structure) was obtained in the same manner as in Example 3 except
that a raising process was not performed. As a result of performing similar evaluations
by using the obtained fabric, it could be confirmed that the heat retention of the
fabric deteriorates as shown in Table 2.
[Table 1]
|
Example 1 |
Example 2 |
Example 3 |
Mixing ratio |
Viscose rayon fiber (% by mass) |
20 |
18 |
18 |
Cation dyeable polyester filament yarn (% by mass) |
27 |
31 |
31 |
Polyacrylic synthetic fiber (% by mass) |
48 |
42 |
42 |
Spandex fiber (% by mass) |
5 |
9 |
9 |
Knitting (structure) of fiber structure |
Two-layer structure |
Two-layer structure |
Two-layer structure |
Raising process |
Present |
Present |
Present |
Single fiber fineness of filament yarn (dtex) |
1,17 |
0,88 |
1,17 |
Hygroscopic heat generation |
2,6 |
2,5 |
2,5 |
Fluff adhesion |
4,5 |
4,5 |
4,5 |
Stretch recovery percentage (%) vertical/horizontal |
88/83 |
88/85 |
91/85 |
Heat retention rate (%) |
35 |
35 |
31 |
[Table 2]
|
Comparative Example 1 |
Comparative Example 2 |
Comparative Example 3 |
Comparative Example 4 |
Comparative Example 5 |
Mixing ratio |
Viscose rayon fiber (% by mass) |
0 |
29 |
68 |
21 |
18 |
Cation dyeable polyester filament yarn (% by mass) |
27 |
0 |
27 |
29 |
31 |
Polyacrylic synthetic fiber (% by mass) |
68 |
66 |
0 |
50 |
42 |
Spandex fiber (% by mass) |
5 |
5 |
5 |
0 |
9 |
Knitting (structure) of fiber structure |
Two-layer structure |
Two-layer structure |
Two-layer structure |
Two-layer structure |
Two-layer structure |
Raising process |
Present |
Present |
Present |
Present |
Absent |
Single fiber fineness of filament yarn (dtex) |
1,17 |
- |
1,17 |
1,17 |
1,17 |
Hygroscopic heat generation |
0,5 |
2,6 |
3,1 |
2,5 |
2,5 |
Fluff adhesion |
4,5 |
3,0 |
4,0 |
4,0 |
- |
Stretch recovery percentage (%) vertical/horizontal |
86/85 |
89/84 |
84/83 |
74/71 |
87/84 |
Heat retention lz rate (%) |
33 |
34 |
19 |
30 |
18 |
INDUSTRIAL APPLICABILITY
[0069] The fabric structure of the present invention is not particularly limited as long
as it is a garment put on a body, in addition to garments such as outerwear including
T-shirts, blousons, slacks, skirts, and the like, and underwear including tights,
spats, camisoles, underpants, and the like; the fabric structure of the present invention
is preferably used for various garments.