Technical field
[0001] The invention relates to the field of textile fabrics, in particular to a flexible
high-elastic flake-like textile fabric of a single substance and a preparation method
thereof.
BACKGROUND OF THE INVENTION
[0002] Soft, comfortable and stylish underwear products (underwear, corsets or sportswear)
are the first choice for contemporary women who pursue fashion and health. As an important
textile material, knitted fabric has developed rapidly in recent years and played
an important role in underwear, sports, leisure and other application fields. Knitted
fabric consumes about 50% of the total fiber consumption, and it is still increasing.
The most important advantage of knitted fabrics, compared to woven fabrics, undoubtedly
is its characteristic of high elasticity. Due to their structural nature, no matter
how woven fabrics are designed, they cannot achieve the high elasticity of knitted
fabrics.
[0003] As contemporary women's pursuit of health and comfort is becoming more and more intense,
soft, comfortable and stylish underwear products have seen greater demands in the
consumer market. However, underwear products which contain elements for providing
support and pull-up effects currently available in the market lack wearing comfort,
leave strangle marks on the skin, oppress the body of the wearers, and affect the
beauty of the body. This type of underwear product do not meet the consumer demands
for products that have a certain support effect while being comfortable to wear without
exerting pressure or leaving strangle marks on the body, so there is an urgent need
for a highly elastic fabric to be supplied to the market. But at the same time, we
also have to deal with the issue of low recovery rate brought by the high elasticity
of knitted fabrics compared with elastic woven fabrics. A low recovery rate will be
very detrimental to the feel and comfort of wearing the garments, and it is a major
problem facing the fashion designers. How to deal with this problem has become a difficult
task for those skilled in the art. High elasticity and high recovery rate are the
actual needs of consumers. On the other hand, there are also needs to adjust the tightness
of the garment according the circumstances in which the wearer situates and these
needs must also be met at the same time.
[0004] Spandex fiber is an excellent elastic fiber. Its elastic elongation rate is 450%-700%,
and its elastic recovery rate is over 95%. It is strong and durable. Its excellent
stretch and recovery properties increase the fit, comfort and drapability of clothing.
However, spandex also has its disadvantages, such as sticky feel, easy to turn yellow,
etc. Generally, elastic knitted fabrics are blended with spandex and other yarns,
and as such the elasticity and recovery rate of the fabric cannot reach the elasticity
and recovery rate of pure spandex. This is undesirable in meeting consumers' needs.
DESCRIPTION OF THE INVENTION
Summary of the Invention
[0005] The invention overcomes the problems that the fabrics in the prior art are difficult
to meet consumers' demand for high elasticity and recovery and their feel and comfort
is poor.
Technical Solution
[0006] A method for preparing a flexible and highly elastic flake-like textile fabric of
a single substance, comprising the following process:
[0007] It is knitted with at least two elastic yarns of the same material of a single substance,
including Y1 yarn and Y2 yarn. After each elastic yarn is knitted into loops and linked
together to form a fabric body with coexistence of both a series structure and a parallel
structure.
[0008] The modulus of Y1 yarn ≤ the modulus of Y2 yarn, or the yarn count of Y1 yarn ≤ the
yarn count of Y2 yarn; with varies in the modulus or yarn count of the elastic yarns,
the fabric body accordingly changes its initial opening and modulus in the warp and
weft directions.
[0009] The fabric body is a warp-knitted structure or a weft-knitted structure, and with
a tension force being applied on the fabric body and in the process of increasing
the tension, the fabric body forms an overall structure in which series and parallel
structures coexist, resulting in increases in the initial opening or modulus of the
Y1 yarn or Y2 yarn in the warp direction or weft direction.
[0010] When the fabric body is a weft-knitted structure, as a tension applied on the fabric
body increases, a series structure is formed in the warp direction, wherein specifically,
the Y1 yarn is first pulled to deform the Y1 yarn, and the Y1 yarn then drives the
Y2 yarn to gradually increase its initial opening and modulus in the warp direction;
and a parallel structure is formed in the weft direction, wherein specifically, the
Y2 yarn is first pulled to deform the Y2 yarn, and the Y2 yarn then drives the Y1
yarn to gradually increase its initial opening of and modulus in the weft direction.
[0011] When the fabric body is a warp-knitted structure, as a tension applied on the fabric
body increases, a series structure is formed in the weft direction, wherein specifically,
the Y1 yarn is first pulled to deform the Y1 yarn, and the Y1 yarn then drives the
Y2 yarn to gradually increase its initial opening and modulus of in the weft direction;
and a parallel structure is formed in the warp direction, wherein specifically, the
Y2 yarn is first pulled to deform the Y2 yarn, and then the Y2 yarn drives the Y1
to gradually increases its initial opening and modulus in the warp direction.
[0012] In the series structure of the fabric body, when a tension is applied on the fabric
body, the same tension is transmitted to the elastic yarns having different moduli,
and the elastic yarn with a small modulus is deformed first, and then the overall
modulus of the fabric body is determined in turn by the elastic yarn with a lower
modulus; at this time, the overall modulus of the fabric body is the minimum value
of the elastic yarn modulus; while in the parallel structure, when the tension is
applied on the fabric body, the tension is distributed among the elastic yarns, and
each elastic yarn produces the same deformation and the synthesis of each modulus
results in the overall modulus of the fabric body, that is, the overall modulus of
the fabric body is greater than the modulus of any elastic yarn.
[0013] A flexible and highly elastic flake-like textile fabric of a single substance comprises
a fabric body and the fabric body is knitted with at least two elastic yarns of the
same material of a single substance, including Y1 yarn and Y2 yarn. The Y1 Yarns and
Y2 yarns are looped and connected to each other to form a series structure and a parallel
structure, wherein, the modulus of Y1 yarn ≤ the modulus of Y2 yarn, or the yarn count
of Y1 yarn ≤ Y2 yarn yarn count.
[0014] The loops formed by the Y1 yarn and the loops formed by the Y2 yarn are connected
in the warp direction and the weft direction of the fabric body to form, respectively,
a series structure and a parallel structure.
[0015] The single material elastic yarn is any one selected from spandex yarn, hard elastic
fiber, polyolefin elastic fiber, composite elastic fiber, polyetherester elastic fiber,
polyurethane fiber and diene elastic fiber.
[0016] The fabric body is mesh fabric or double flattened fabric.
[0017] The fabric body is a plain weave double-sided structure.
[0018] The elastic yarn density is 50-200 denier.
[0019] The elastic recovery rate of the fabric body is above 95%.
Beneficial Effects of the Invention
[0020] Through the design of the series structure and the parallel structure coexisting
in the fabric body, the invention realizes the deformation of the large opening at
the low modulus stage, improves the stretching comfort range of the fabric, and has
high elasticity, lightness, high modulus, flexibility, breathable, large-area flakes,
free-cut and other characteristics. It is mainly used in the middle layer of clothing
to improve the modulus, recovery rate and wrinkle resistance of composite materials,
and can be widely used in underwear, corsets, sportswear and other clothing.
BRIEF DESCRIPTION OF DRAWINGS
[0021]
FIG. 1 is a schematic diagram of the principle of the present invention.
FIG. 2 is the structural representation of embodiment 1 of the present invention.
FIG. 3 is a schematic diagram of a weft-knitting structure loop of the present invention.
wherein A is a series structure, B is a parallel structure.
DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION
[0022] Embodiments of the present invention are described in detail below, examples of which
are shown in the drawings, wherein the same or similar reference numerals denote the
same or similar elements or elements having the same or similar functions throughout.
The embodiments described below by referring to the figures are exemplary only for
explaining the present invention and should not be construed as limiting the present
invention.
[0023] In the description of the present invention, it should be noted that, unless otherwise
specified and limited, the terms "connected" and "linked" should be understood in
a broad sense, for example, for those of ordinary skill in the art, the specific meanings
of the above terms in the present invention can be understood according to specific
circumstances.
[0024] As shown in accompanying FIGs 1-3, the present invention relates to a flexible and
highly elastic flake-like textile fabric of a single substance, including a fabric
body, which is knitted from at least two elastic yarns of the same material of a single
substance. In the embodiment shown, two yarns, Y1 and Y2, are used as an example for
illustration. The Y1 yarn and the Y2 yarn are knitted to form several loops, and then
the loops are entrained together to form a series structure A and a parallel structure
B. The modulus of Y1 yarn ≤ the modulus of Y2 yarn, or the yarn count of Y1 yarn ≤
the yarn count of Y2 yarn. The fabric body changes its initial opening and modulus
in the warp and weft directions in response to the variations in the modulus or yarn
count of the elastic yarns.
[0025] Of course, as long as meeting other requirements, the fabric body can be formed from
three or more elastic yarns. And each elastic yarn is of a single substance, which
is the same material, thereby obtaining a fabric of a single substance.
[0026] For example, as shown in FIG.1, through such coexistence of a series and a parallel
structure, no matter in which direction the force is applied, a certain elastic yarn
of the fabric will increase its initial opening and modulus in the warp or weft direction.
[0027] The fabric body is a warp-knitted structure or a weft-knitted structure, and with
a tension being applied on the fabric body and in the process of increasing the tension,
the fabric body forms a series structure or a parallel structure in the warp direction
and weft direction respectively, so that the Y1 yarn or Y2 yarn increases its initial
opening or modulus in the warp or weft direction.
[0028] More specifically, when the fabric body is a weft-knitted structure, as the tension
applied on the fabric body increases, a series structure is formed in the warp direction:
first pull the Y1 yarn to deform the Y1 yarn, and then the Y1 yarn drives the Y2 yarn
to gradually increase the initial opening and modulus in the warp direction; and a
parallel structure is formed in the weft direction: Y2 yarn is pulled to deform the
Y2 yarn, and then Y2 yarn drives the Y1 yarn to gradually increase its initial opening
and modulus in the weft direction.
[0029] When the fabric body is a warp-knitted structure, as the tension applied on the fabric
body increases, a series structure is formed in the weft direction: first pull the
Y1 yarn to deform the Y1 yarn, and the Y1 yarn then drives the Y2 yarn to gradually
increases the initial opening and modulus in the weft direction; and a parallel structure
is formed in the warp direction: first pull the Y2 yarn to deform the Y2 yarn, and
the Y2 yarn then drives the Y1 yarn to gradually increase the initial opening and
modulus in the warp direction.
[0030] It can be seen from the situation where a tension is applied to different fabric
structures above that when one elastic yarn is subject to a tension it will produce
a related impact on other elastic yarns, making the initial opening and modulus in
the corresponding direction of the corresponding elastic yarns become larger.
[0031] Through the series and parallel structure design of the elastic yarn coexistent in
the fabric body, the change of different elastic yarns is utilized to realize the
deformation of the large opening at the low modulus stage, and to improve the range
of stretch comfort of the fabric body so that the fabric possesses high elasticity,
lightness, high modulus, flexibility, breathable, large-area flakes, free-cut and
other characteristics. It is mainly used in the middle layer of clothing to improve
the modulus, recovery rate and wrinkle resistance of composite materials.
[0032] In the series structure of the fabric body, when a tension is applied on the fabric
body, the same tension is transmitted to the elastic yarns having different moduli,
and the elastic yarn having a small modulus is deformed first, and then the overall
modulus of the fabric body changes, determined in turn by the elastic yarns with a
lower modulus at the time, the overall modulus of the fabric body is the minimum value
of the elastic yarn modulus. In the parallel structure, when the tension is applied
on the fabric body, the tension is distributed among the elastic yarns, and each elastic
yarn produces the same deformation and the synthesis of each modulus results in the
overall modulus of the fabric body, that is, the overall modulus of the fabric body
is greater than the modulus of any elastic yarn.
[0033] In addition, the elastic yarn of the single substance is any yarn selected from spandex
yarn, hard elastic fiber, polyolefin elastic fiber, composite elastic fiber, polyether
ester elastic fiber, polyurethane fiber and diene elastic fiber. In the example, the
elastic yarn selected is a spandex yarn, that is, the entire fabric body is made from
spandex yarn.
[0034] The fabric body is a mesh fabric or a double-flattened fabric, which adopts a plain
weave double-sided structure.
[0035] Furthermore, the elastic yarn density is 50-200 denier, and the elastic recovery
rate of the resulting fabric is above 95%, which can ensure that the fabric body has
good resilience.
[0036] In the present invention, by adjusting the modulus or yarn count of the Y1 yarn and
Y2 yarn, the initial opening degree and modulus of the fabric body in the warp and
weft directions can be changed. When the fabric body is a weft-knitted structure,
each yarn receives the same tensile force in the warp direction, so the warp direction
opening and modulus of the fabric are determined by the thinnest yarn. As the tension
increases, the original low modulus yarn, due to the change of tensile properties,
increase its modulus over that of the original high modulus yarn, and then the original
high modulus yarn takes over the low modulus yarn and continues to deform. When the
fabric body is stretched in the weft direction, the force on the fabric body is shared
by both Y1 yarn and Y2 yarn, and the initial opening and modulus are determined by
the thickest elastic yarn. For the warp knitting structure, it is just the opposite,
the warp opening and modulus are determined by the thickest yarn, and the weft opening
and modulus are determined by the thinnest yarn. Therefore, it can be ensured that
both the warp-knitted structure and the weft-knitted structure have the characteristic
of large opening deformation in the low modulus stage.
[0037] Knitting plain or double-sided fabrics on the weft knitting machine can make the
fabric reach the required elasticity and modulus by changing the specifications of
the spandex yarn fed into each channel. When using, if the modulus is required to
be small, the warp direction can be consistent with the direction of use, and if the
modulus is required to be large, the weft direction can be consistent with the direction
of use.
[0038] The following will be described with specific embodiments.
Example 1:
[0039]
- 1. Elastic yarn used: Y1 yarn is PU 70D + Y2 yarn is PU 105D.
- 2. Warping of spandex yarn:
[0040] Warping machine type: Karl MayerDSE-H21/30 NC-2, positive yarn feeding.
[0041] Warping temperature: 24°C, warping humidity: 78%.
[0042] Setting the process parameters in the workshop under the above temperature and humidity
conditions.
[0043] 3. Knitting equipment: 32-needle Raschel warp knitting machine.
[0044] 4. Finishing project.
[0045] Washed - Ordered - Inspected.
[0046] 5. Test results
Tensile elasticity test |
Elongation Rate |
Modulus (lbf) |
Length % |
280% |
40% |
0.450 |
60% |
0.830 |
80% |
1.190 |
Width% |
245% |
40% |
0.200 |
60% |
0.310 |
80% |
0.630 |
[0047] It can be seen from the test results in the above table that the warp-knitted fabric
body is knitted from two spandex yarns of different fineness, and the fabric body
is wrapped together by the loops of the Y1 yarn and the Y2 yarn to form a soft and
light fabric. In different knitting structures, different situations are formed. In
the series structure (weft direction), the same tensile force is transmitted to the
yarn structures with different moduli, so that the yarn with a small modulus is deformed
first, and then overall modulus of the fabric is determined alternately by one of
the two yarns with a lower modulus at the time; therefore, the overall modulus of
the fabric is the minimum value of the yarn modulus. In the parallel structure (warp
direction), the tension is distributed on the two yarns, and the modulus is synthesized
and deformed in the same way to adapt to a given tensile force. Therefore, the overall
modulus of the fabric is greater than the modulus of any independent yarn, and its
warp opening and modulus are determined by the thickest 105D yarn, that is, the Y2
yarn, while the weft opening and modulus are determined by the thinnest 70D yarn,
that is, the Y1 yarn. It can also be seen from the results that through this structural
setting, the resulting fabric has the characteristics of high elasticity, lightness,
high modulus, flexibility, breathability, large-area flakes, and free-cut. It is mainly
used in the middle layer of the fabric of underwear, corsets or sports aprons, and
can improve the modulus, recovery rate and wrinkle resistance of the composite material.
Example 2:
[0048] On the basis of embodiment 1, yarn PU 105D as Y1 and yarn PU 140D as Y2 are knitted
into double drawer plain warp knitted fabric. For the elastic test, in the series
structure (weft direction), the same tensile force is transmitted to the yarn structures
of different moduli. As a result, the yarn with a small modulus is deformed first,
and the overall modulus of the fabric is determined alternately by one of the two
yarns with the lower modulus at the time. Therefore, the overall modulus of the fabric
is the minimum value of the yarn modulus. In the parallel structure (warp direction),
the tension is distributed on the two yarns. The modulus is synthesized and deformed
in the same way to adapt to a given tensile force. Therefore, the overall modulus
of the fabric is greater than the modulus of any independent yarn, and its warp opening
and modulus are determined by the thickest 140D yarn, that is, Y2, while the weft
opening and modulus are determined by the thinnest 105D yarn, that is, the Y1.
Example 3:
[0049] Yarns: yarn PU 75D as Y1 and yarn PU 140D as Y2 are knitted into plain double-sided
weft-knitted fabric. For elastic testing, in the series structure (warp direction),
the same tensile force is transmitted to yarns with different moduli and the yarn
with a small modulus is deformed first, and the overall modulus of the fabric is determined
alternately by one of the two yarns with the lower modulus at the time. Therefore,
the overall modulus of the fabric is the minimum value of the yarn modulus. In the
parallel structure (weft direction), the tensile force is distributed on the two yarns,
and its modulus is synthesized and deformed in the same way to adapt to a given tensile
force. Therefore, the overall modulus of the fabric is greater than the modulus of
any independent yarn, and its warp opening and modulus are determined by the thickest
140D yarn, namely, the Y2 yarn, and the weft opening and modulus are determined by
the thinnest 75D yarn, namely the Y1 yarn.
[0050] It should be noted that the foregoing is only preferred embodiments of the present
invention, and are not intended to limit the present invention. Although the present
invention has been described in detail with reference to the embodiments, those skilled
in the art can still implement the modifications to the technical solutions described
in the examples, or equivalent replacements for some of the technical features, but
within the spirit and principles of the present invention, any modifications, equivalent
replacements, improvements, etc., shall be within the scope of protection of the present
invention.
1. 1. A method for preparing a flexible and highly elastic sheet-like textile fabric
of a single substance is
characterized in that it comprises the following steps:
knitting with at least two elastic yarns of the same material of a single substance,
including Y1 yarn and Y2 yarn, wherein after each elastic yarn is knitted into coils
and is looped together to form a fabric with both a series structure and a parallel
structure;
wherein the modulus of Y1 yarn ≤ the modulus of Y2 yarn, or the yarn count of Y1 yarn
≤ the yarn count of Y2 yarn, and the initial opening and modulus of the fabric in
the warp and weft directions change accordingly in responding to the changes of the
modulus or yarn count of the elastic yarns; and
wherein the fabric body is a warp-knitted structure or a weft-knitted structure,
when a tension a tension force being applied on the fabric body and in the process
of increasing the tension, the fabric body forms an overall structure in which series
and parallel structures coexist, so that the initial opening or modulus of the Y1
yarn or the Y2 yarn in the warp direction or the weft direction becomes larger.
2. The method according to claim 1, characterized in that, in the series structure of the fabric body, when a tension being applied on the
fabric body acts, the same tension is transmitted to the elastic yarns of different
moduli, and the elastic yarn with a smaller modulus is deformed first, and then the
overall modulus of the fabric body is determined in turn by each elastic yarn with
lower modulus and at this time, the overall modulus of the fabric body is the minimum
value of the yarn modulus, and in the parallel structure, when a tension being applied
on the fabric body, the tension is distributed on each elastic yarn, and each elastic
yarn produces the same deformation and the synthesis of each modulus to obtain the
overall modulus of the fabric body and thus the overall modulus of the fabric body
is greater than the modulus of any elastic yarn.
3. The method according to claim 1, characterized in that when the fabric body is a weft-knitted structure, as the tension applied on the fabric
body increases, a series structure is formed in the warp direction, specifically first
pulling the Y1 yarn to deform the Y1 yarn, the Y1 yarn drives the Y2 to gradually
increases the initial opening and modulus of the Y2 yarn in the warp direction; and
a parallel structure is formed in the weft direction, specifically first pulling the
Y2 yarn to deform the Y2 yarn, and the Y2 yarn then drives the Y1 yarn to gradually
increase the initial opening and modulus of the Y1 yarn in the weft direction; and
when the fabric body is a warp-knitted structure, as the tension applied on the fabric
body increases, a series structure is formed in the weft direction wherein specifically,
the Y1 yarn is first pulled to deform the Y1 yarn, and the Y1 yarn then drives the
Y2 yarn to gradually increases the initial opening and modulus of the Y2 yarn in the
weft direction; and a parallel structure is formed in the warp direction wherein specifically,
the Y2 yarn is first pulled to deform the Y2 yarn, and the Y2 yarn then drives the
Y1 yarn to gradually increase the initial opening and modulus of the Y1 yarn in the
warp direction.
4. A flexible and highly elastic flate-like textile fabric of a single substance, characterized in that it comprises a fabric body, and the fabric body is knitted by at least two elastic
yarns of the same material of a single substance, including Y1 yarn and Y2 yarn, wherein
the Y1 yarn and the Y2 yarn are looped and connected to each other to form a series
structure part and a parallel structure part; and wherein, the modulus of the Y1 yarn
≤ the modulus of the Y2 yarn, or the yarn count of the Y1 yarn ≤ Yarn count of Y2
yarn.
5. The textile fabric according to claim 4, characterized in that, when the fabric body is a weft-knitted structure, the loops formed by the Y1 yarn
and the Y2 yarn are connected to respectively form a series structure in the warp
direction of the fabric body, and form a parallel structure in the weft direction
of the fabric body.
6. The textile fabric according to claim 4, characterized in that, when the fabric body is a warp-knitted structure, the loops formed by the Y1 yarn
and the Y2 yarn are connected to respectively form respectively a parallel structure
in the warp direction, and form a series structure in the weft direction.
7. The textile fabric according to claim 4, characterized in that the elastic yarn of the single substance is selected from spandex yarn, hard elastic
fiber, polyolefin elastic fiber, composite elastic fiber, polyether Any of ester elastic
fibers, polyurethane fibers, and diene elastic fibers.
8. The textile fabric according to claim 5, characterized in that the fabric body is a mesh fabric or a double-flattened fabric, and the fabric body
is a plain weave double-sided structure.
9. The textile fabric according to claim 8, characterized in that the density of the elastic yarn is 50-200 denier.
10. The textile fabric according to claim 9, characterized in that the elastic recovery rate of the fabric body is above 95%.