U.S. patent application number 10/391010 was filed with the patent office on 2003-09-25 for elastic air textured yarn and its manufacturing method.
Invention is credited to Jen, Zo-Chun.
Application Number | 20030177749 10/391010 |
Document ID | / |
Family ID | 28042446 |
Filed Date | 2003-09-25 |
United States Patent
Application |
20030177749 |
Kind Code |
A1 |
Jen, Zo-Chun |
September 25, 2003 |
Elastic air textured yarn and its manufacturing method
Abstract
The present invention relates to an air textured yarn with
elastic character, of which the purpose is to eliminate the
shortcoming of making one comfortless while wearing clothes made of
conventional air textured yarn by its lack of elasticity; the
present invention is characterized in: the inner core yarn, which
is made from the heat plastic fiber with self-curling elastic
character, and the outer enclosing yarn, which is made from an
appropriate heat plastic fiber in accordance with the function need
of various fabric, are air textured processed to manufacture a high
class yarn with elastic character, which is of industrial
applicability.
Inventors: |
Jen, Zo-Chun; (Taipei,
TW) |
Correspondence
Address: |
STEVENS DAVIS MILLER & MOSHER, LLP
1615 L STREET, NW
SUITE 850
WASHINGTON
DC
20036
US
|
Family ID: |
28042446 |
Appl. No.: |
10/391010 |
Filed: |
March 19, 2003 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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10391010 |
Mar 19, 2003 |
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09906743 |
Jul 18, 2001 |
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Current U.S.
Class: |
57/289 |
Current CPC
Class: |
D02G 3/32 20130101 |
Class at
Publication: |
57/289 |
International
Class: |
D02G 003/02; D01H
013/26 |
Claims
What is claimed is:
1. An elastic air textured yarn, comprising an inner core yarn and
an outer enclosing effect yarn, wherein said core yarn is heat
plastic fiber with self-curling elastic character and said effect
yarn is a single or more than one ordinary heat plastic fiber.
2. An elastic air textured yarn as defined in claim 1, wherein said
core yarn is manufactured, through melt-compounding two heat
plastic polymers with different shrinkage rate in an appropriate
composition, to be a heat plastic fiber with self-curling elastic
character.
3. An elastic air textured yarn as defined in claim 2, of which the
self-curling elastic character appears after heat treatment so as
to form a spring shape screw.
4. An elastic air textured yarn as defined in claim 3, of which the
elasticity depends on the composition ratio of core yarn and effect
yarn.
5. A manufacturing method of an air textured yarn, comprising
procedures as follows: (1) to manufacture said core yarn, spinning
two heat plastic polymers with different shrinkage rate by a melt
compound spinning nozzle, in an appropriate composition ratio, to
produce a heat plastic fiber with self-curling elastic character
(2) to manufacture said effect yarn, using a single or more than
one ordinary heat plastic fiber; (3) said obtained core yarn and
effect yarn are severally fed into different rollers and then are
together fed into an air textured process means at different
feeding rates to be air textured-processed so as to form an elastic
air textured yarn; and (4) said manufactured elastic air textured
yarn is further fed into a roller and a winding roll to be wound
up.
6. A manufacturing method of an air textured yarn as defined in
claim 5, wherein said procedure of feeding said core yarn and said
effect yarn together into an air textured process means to form an
elastic air textured yarn is accomplished by injecting compressed
air into through an injection and twist device of air textured
process means for staggering and compounding said core yarn and
said effect yarn.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Present Invention
[0002] The present invention relates to an air textured yarn with
elastic character, which is characterized in: After heat treatment,
the elastic character of the air textured yarn of the present
invention appears. The air textured yarn of the present invention
comprises: an inner core yarn which is made from a heat plastic
fiber with self-curling elastic character, and an outer enclosing
effect yarn which is made from an ordinary heat plastic fiber. The
air textured yarn, which is obtained from an air textured machine,
is weaving-processed; then during dyeing and finishing processes,
the heat plastic fiber with self-curling elastic character shrinks
variedly, by utilizing the high temperature during processing, so
as to endow the textile with an elastic effect.
[0003] 2. Description of Prior Art
[0004] The conventional manufacturing method for air textured yarn
mainly makes use of conventional polyester or polyamide synthetic
profiled fiber, original fiber or processed yarn, as core yarn or
effect yarn. As a result, the textile made of this kind of air
textured yarn is so lack of elastic character that it is
uncomfortable for all people who wears clothes made of this sort of
textile.
[0005] In addition, other relevant manufacturer uses staple fiber
to enclose LYCRA (Spandex) to produce staple fiber elastic covering
yarn, or uses filament to singly/doubly enclose LYCRA (Spandex) or
filament to be knotted with high speed air and to enclose LYCRA
(Spandex) to produce long fiber elastic covering yarn. These kinds
of yarn have elastic character; however, polyurethane
filament(Spandex), not to mention the complexity of its process,
has disadvantages listed as follows:
[0006] 1. high cost due to its technical complexity on raw material
and process;
[0007] 2. unsuitable for dyeing and finishing due to its weak
endurance against wet and heat; besides, it's apt to be brittle
while modifying the color;
[0008] 3. weak endurance against the base (NaOH), which slows down
the processing;
[0009] 4. tension during weaving, dyeing and finishing is hard to
control due to its high elasticity; consequently, processing of it
is extremely difficult so as to affect its quality and
efficiency.
SUMMARY OF THE INVENTION
[0010] In view of said disadvantages of conventional products, the
present invention discloses, after a deep research and many times
of test, a high level air textured yarn which combines all
advantages of various kinds of elastic covering yarn.
[0011] The self-curling elastic character of the elastic air
textured yarn disclosed by the present invention does not appear
before the heat treatment of dyeing and finishing, i.e., the
elastic air textured yarn of the present invention has excellent
dimensional stability which makes itself very easy to weave.
Therefore, the elastic air textured yarn of the present invention
is novel and valuably applicable to both weaving industry and
clothing industry.
BRIEF DESCRIPTION OF THE DRAWING FIGURES
[0012] In order to describe advantages of the present invention
more in detail, the drawing figures are briefly described as
follows:
[0013] FIG. 1 is a schematic process flow diagram of an air
textured process utilized by the present invention.
[0014] FIG. 2 is the other schematic flow diagram of an air
textured process utilized by the present invention.
[0015] FIG. 3 is a local enlarged drawing of air textured process
means (7) of FIG. 1.
[0016] FIG. 4 is a schematic manufactured drawing of self-curling
elastic heat plastic fiber of the core yarn of the present
invention.
[0017] FIG. 5 lists some schematic section drawings of self-curling
elastic heat plastic fiber of the core yarn of the present
invention, which are two heat plastic polymers, with different
shrinkage rate, manufactured by a compound spinning nozzle; the
transverse section drawings show the characteristics of
disposition.
[0018] FIG. 6 shows side schematic drawing of self-curling elastic
heat plastic fiber, after being heated and shrunk, of the core yarn
of the present invention.
[0019] Symbols of the drawing are described as follows:
[0020] (1) water inlet (2) compressed air inlet
[0021] (3) core yarn (4) effect yarn (single fiber feeding)
[0022] (5) effect yarn (doubling fiber feeding) (6) batching up
device
[0023] (7) air textured process means (8) air textured yarn
[0024] (W1.1) feeding roller (W1.2) feeding roller
[0025] (W2) second roller (W3) third roller
[0026] (WW) winding roll
DETAILED DESCRIPTION OF THE PRESENT INVENTION
[0027] The core yarn of the air textured yarn of the present
invention mainly is manufactured through spinning two melted heat
plastic polymers, in an appropriate composition, of different
shrinkage rate by a compound spinning nozzle so as to make the two
heat plastic polymers of different shrinkage rate have certain
disposition characteristics in the transverse section of fiber. The
manufacturing schematic drawing is shown as FIG. 4; FIG. 5 lists
some core yarn compound fibers section schematic drawings which can
be applied to the present invention. While in hot water during
dyeing and finishing processes, the interface forms a spring shape
screw due to the difference of shrinkage stress caused by different
shrinkage rate of the two materials, which produces a self-curling
elastic character.
[0028] Said effect yarn (4) is made of a single or more than one
ordinary heat plastic fiber, wherein the specification and yarn
type can be appropriately selected depending on the needed effect
and character of texture.
[0029] In view of FIG. 1, which shows a schematic process flow
diagram, said core yarn (3) and said effect yarn (4) or (5) are
severally fed into an air textured process device (7) (shown as the
enlarged drawing of FIG. 3) to be processed through different
feeding rollers ((W1.1) and (W1.2)) at different feeding rates.
Said processed air textured yarn (8) is led out by the second
roller (W2); finally, said yarn is wound up by controlling the
feeding rate between the third roller (W3) and the winding roll
(WW).
[0030] Said elastic air textured yarn (8) of the present invention
can further be woven to various shapes of cloth by knitting
machinery, weaving machinery with or without shuttle. The weaving
character of the air textured yarn of the present invention is much
better than those conventional elastic covering yarn since there is
no tension problem because that the elastic effect does not appear
before the treatment of hot water. The cloth made of said elastic
air textured yarn of the present invention, after dyeing and
finishing, appears an excellent elastic character; therefore, the
clothes made of which are very comfortable to wear.
[0031] To summarize, the present invention discloses an air
textured yarn with self-curling elastic character and its
manufacturing method. The following examples are given to
illustrate characteristics of the present invention but not to
limit the invention.
[0032] Explanation on Elasticity Evaluation Method
[0033] Machine: INSTRON-6021 universal tension testing machine
[0034] Method: a. cutting a test piece of 2.5 cm by 30 cm
(including 10 cm of holding length for holding apparatus) at normal
temperature under tensionless circumstance
[0035] b. Test Speed is 1.667 mm/sec
[0036] Return Speed is 10.0 mm/sec
[0037] c. Test piece is pre-loaded with 12 g
[0038] d. Static tension is 1000 g
[0039] Calculation: elastic extension rate (at static tension 1000
g)=(A2-A1)/A1-100%
[0040] where
[0041] A1: length of test piece before extension
[0042] A2: length of test piece at 1000 g of static tension
EXAMPLE
[0043] Manufacturing of 160d/300f elastic air textured yarn:
[0044] Core yarn: 50d/12f PET self-curling elastic yarn
[0045] Effect yarn: 100d/288f PET circular profiled yarn
[0046] Processing condition:
[0047] D. R Roller Speed: 300 M/Min
[0048] Core Yarn Over Feed: 8.5%
[0049] Effect Yarn Over Feed: 21.0%
[0050] Air Pressure: 10 kg/M.sup.2
[0051] Elastic extension rate (at 1000 g of static tension)=14.35
(%)
COMPARATIVE EXAMPLE
[0052] Manufacturing of 170d/144f conventional air textured
yarn:
[0053] Core yarn: 75d/72f PET circular profiled yarn
[0054] Effect yarn: 75d/72f PET circular profiled yarn
[0055] Processing condition:
[0056] D. R Roller Speed: 330 M/Min
[0057] Core Yarn Over Feed: 13.5%
[0058] Effect Yarn Over Feed: 29.0%
[0059] Air Pressure: 9.0 kg/m.sup.2
[0060] Elastic extension rate (at 1000 g of static tension) 5.75
(%)
[0061] From the comparison between Example and Comparative Example,
we know that using heat plastic fiber with self-curling elastic
character as core yarn and ordinary heat plastic fiber as effect
yarn, the present invention not only maintains the original
character of effect yarn, but also endows the air textured yarn
with an unique elasticity, which eliminates shortcomings of
conventional air textured yarn.
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