U.S. patent application number 15/301414 was filed with the patent office on 2017-04-27 for system for industrial yarn production from composite polyethylene naphthalate material.
This patent application is currently assigned to KORDSA GLOBAL ENDUSTRIYEL IPLIK VE KORD BEZI SANAYI VE TICARET ANONIM SIRKETI. The applicant listed for this patent is KORDSA GLOBAL ENDUSTRIYEL IPLIK VE KORD BEZI SANAYI VE TICARET ANONIM SIRKETI. Invention is credited to Emine GUVEN, Ozlem TURKARSLAN.
Application Number | 20170114477 15/301414 |
Document ID | / |
Family ID | 53200279 |
Filed Date | 2017-04-27 |
United States Patent
Application |
20170114477 |
Kind Code |
A1 |
GUVEN; Emine ; et
al. |
April 27, 2017 |
SYSTEM FOR INDUSTRIAL YARN PRODUCTION FROM COMPOSITE POLYETHYLENE
NAPHTHALATE MATERIAL
Abstract
The present invention relates to a system for industrial
polyester yarn production in order to be used in industrial fabric
production wherein polyethylene naphthalate (PEN) material is used
mixing with liquid crystal polymer material and thus the tenacity,
elastic modulus and dimensional stability of the obtained material
is improved.
Inventors: |
GUVEN; Emine; (Kocaeli,
TR) ; TURKARSLAN; Ozlem; (Kocaeli, TR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
KORDSA GLOBAL ENDUSTRIYEL IPLIK VE KORD BEZI SANAYI VE TICARET
ANONIM SIRKETI |
Kocaeli |
|
TR |
|
|
Assignee: |
KORDSA GLOBAL ENDUSTRIYEL IPLIK VE
KORD BEZI SANAYI VE TICARET ANONIM SIRKETI
Kocaeli
TR
|
Family ID: |
53200279 |
Appl. No.: |
15/301414 |
Filed: |
March 25, 2015 |
PCT Filed: |
March 25, 2015 |
PCT NO: |
PCT/TR2015/000117 |
371 Date: |
October 3, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
D01D 5/16 20130101; D01F
6/92 20130101; D01D 10/02 20130101; D01D 13/00 20130101 |
International
Class: |
D01D 13/00 20060101
D01D013/00; D01D 10/02 20060101 D01D010/02; D01F 6/92 20060101
D01F006/92; D01D 5/16 20060101 D01D005/16 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 1, 2014 |
TR |
2014/03779 |
Claims
1. A system for industrial yarn production from composite
polyethylene naphthalate material comprising: at least one raw
mixture forming unit wherein the raw polymer particles are
prepared, at least one primary mixture forming unit wherein the
primary polymer mixture is obtained and become particles by using
raw polymer particles, at least one primary particle loading unit
wherein the polymer particles forming the primary mixture are
filled and heated, at least one extruder wherein the primary
polymer mixture obtained in primary particle loading unit are
melted and become filaments with the help of the spinneret located
at the exit, at least one cooling unit wherein the material coining
from the extruder is cooled, at least one roller wherein the
material is drawn and oriented, at least one hot chamber wherein
the material is annealed, at least one winding unit wherein the
material is drawn via the rollers by cooling and heating is wound
as yarn, wherein polyethylene naphthalate (PEN) and the liquid
crystal polymer (LCP) are mixed in ratio of 60:40 respectively in
raw mixture forming unit, and The LCP ratio in the mixture is
decreased to 1-3% by weight by diluting the raw mixture with PEN in
primary mixture forming unit.
2. The system for industrial yarn production from composite
polyethylene naphthalate material according to claim 1, wherein raw
mixture forming unit which has at least one raw particle loading
unit wherein the polyethylene naphthalate (PEN) and the liquid
crystal polymer (LCP) is mixed by loading in ratio of 60:40 by
weight respectively, at least one raw molten extruder wherein raw
mixture is melted and extruded; at least one raw molten cooling
unit wherein the material coming out of the raw molten extruder is
cooled.
3. The system for industrial yarn production from composite
polyethylene naphthalate material according to claim 1, wherein the
primary mixture forming unit which has at least one particle
loading and diluting unit wherein the polymer particles coming from
the raw mixture forming unit are melted and diluted with PEN such
that the LCP ratio will be 1-3% by weight; at least one primary
molten extruder wherein the primary raw molten mixture is extruded,
at least one primary molten cooling unit wherein the material going
out of the main molten extruder is cooled.
4. The system for industrial yam production from composite
polyethylene naphthalate material according to claim 1, wherein the
particle loading and diluting unit wherein PEN is added until the
LCP ratio in the mixture is 1-3% by weight the raw PEN-LCP mixture
is extruded at 260-300.degree. C.
5. The system for industrial yarn production from composite
polyethylene naphthalate material according to claim 1, wherein the
primary particle loading unit wherein the particles obtained at.
the primary mixture forming unit outlet are loaded at nitrogen
atmosphere at 120.degree. C. after being dried in vacuum furnace
for at least 24 hours at 120-140.degree. C.
6. The system for industrial yarn production from composite
polyethylene naphthalate material according to claim 1, wherein the
extruder (5) wherein the primary polymer mixture is become
filament, and which has a spinneret with length/diameter ratio of
2-5 and the hole diameter is 1 mm.
7. The system for industrial yarn production from composite
polyethylene naphthalate material according to claim 1, wherein the
extruder wherein the jet velocity of the polymer mixture as
filament is 6-7 m/min.
8. The system for industrial yarn production from composite
polyethylene naphthalate material according to claim 1, wherein the
extruder wherein the throughput of the polymer mixture as filament
is adjusted as 6-7 g/min.
9. The system for industrial yarn production from composite
polyethylene naphthalate material according to claim 1, wherein the
cooling unit wherein the filament coming out of the extruder is
cooled with cooling water at 80-95.degree. C.
10. The system for industrial yarn production from composite
polyethylene naphthalate material according to claim 1, wherein the
primary roller to which the filament coming out of the cooling unit
is transferred, at temperature of 100-140.degree. C.
11. The system for industrial yarn production from composite
polyethylene naphthalate material according to claim 1, wherein the
secondary roller at temperature of 140-160.degree. C. to which the
filament coming out of the primary roller is transferred and
wherein cold drawing is applied on the filament,
12. The system for industrial yarn production from composite
polyethylene naphthalate material according to claim 1, wherein the
first hot chamber to which the filament coining out of the
secondary roller is transferred and in which it is used with hot
air at temperature of 200-250.degree. C.
13. The system for industrial yarn production from composite
polyethylene naphthalate material according to claim 1, wherein the
tertiary roller at temperature of 200-250.degree. C. to which the
filament coining out of the first hot chamber) is transferred and
wherein hot drawing is applied on the filament.
14. The system for industrial yarn production from composite
polyethylene naphthalate material according to claim 1, wherein the
second hot chamber at temperature of 120-180.degree. C. to which
the filament coming out of tertiary roller is transferred.
15. The system for industrial yarn production from composite
polyethylene naphthalate material according to claim 1, wherein the
quaternary roller without heating to which the filament coining out
of the second hot chamber--is transferred and wherein hot drawing
is applied on the filament.
16. The system for industrial yarn production from composite
polyethylene naphthalate material according to claim 1, wherein the
winding unit wherein the filament coming out of the tertiary
cylinder is wound as yarn by relaxing 1-2%.
17. The system for industrial yarn production from composite
polyethylene naphthalate material according to claim 2, wherein the
primary mixture forming unit which has at least one particle
loading and diluting unit wherein the polymer particles coming from
the raw mixture forming unit are melted and diluted with PEN such
that the LCP ratio will be 1-3% by weight; at least one primary
molten extruder wherein the primary raw molten mixture is extruded,
at least one primary molten cooling unit wherein the material going
out of the main molten extruder is cooled.
18. The system for industrial yarn production from composite
polyethylene naphthalate material according to claim 2, wherein the
particle loading and diluting unit wherein PEN is added until the
LCP ratio in the mixture is 1-3% by weight the raw PEN-LCP mixture
is extruded at 260-300.degree. C.
19. The system for industrial yarn production from composite
polyethylene naphthalate material according to claim 3, wherein the
particle loading and diluting unit wherein PEN is added until the
LCP ratio in the mixture is 1-3, by weight the raw PEN-LCP mixture
is extruded at 260-300.degree. C.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is the national phase entry of
International Application No PCT/TR2015/000117, filed on Mar. 25,
2015, which is based upon and claims priority to TR2014/03779,
filed on Apr. 1, 2014, the entire contents of which are
incorporated herein by reference.
TECHNICAL FIELD
[0002] The present invention relates a system for industrial
polyester yarn production, in which the mechanical properties of
the yarn (tenacity, modulus, dimensional stability) are improved
with additive, in order to be used in industrial fabric
production.
BACKGROUND OF THE INVENTION
[0003] Improved mechanical properties and a strong structure are
required in conveyor band chafer, membrane and coating fabrics. For
such embodiments, processes should be improved without increasing
the cost that much, and the resultant fiber should provide. high
modulus and better dimensional stability compared to the reference.
For this reason, studies have been carried out to produce
self-reinforced composite PEN yarns.
[0004] Liquid Crystal Polymers (LCP), which can be used as
reinforcing phase in different polymeric materials, are high
performance resins with a unique structure comprising long, hard,
rod like high oriented molecules. Rod-like molecules orient
themselves in the flow direction during injection or extrusion
molding.
[0005] The parts molded in LCP exhibit very high dimensional
stability even if they are heated up to 200-250.degree. C. Melting
temperature of some LCP classes can reach up to 300.degree. C. LCP
can generally be used as an additive in many fields depending on
its properties. Electronic and electrical components, fuel and gas
barrier structures and sensors can be given as example for these
fields.
SUMMARY OF THE INVENTION
[0006] The objective of the present invention is to provide a
system for liquid crystal polymer added industrial polyester yarn
production.
[0007] Another objective of the present invention is to provide a
system for industrial yarn production wherein polyethylene
naphthalate is used as polymer.
[0008] A further objective of the present invention is to provide a
system for industrial yarn production with improved tensile
strength and elastic modulus.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] A system for industrial yarn production with LCP added
polyethylene naphthalate developed to fulfill the objectives of the
present invention is illustrated in the accompanying figure,
wherein
[0010] FIG. 1 is the schematic view of the inventive system for
yarn production.
[0011] The components shown in FIG. 1 are each given with reference
numerals as follows: [0012] 10. System for industrial yarn
production [0013] 11. Raw mixture forming unit [0014] 21. Raw
particle loading unit [0015] 22. Raw molten extruder [0016] 23. Raw
molten cooling unit [0017] 12. Primary mixture forming unit [0018]
31. Particle loading and diluting unit [0019] 32. Primary molten
extruder [0020] 33. Primary molten cooling unit [0021] 13. Primary
particle loading unit [0022] 14. Extruder [0023] 15. Cooling unit
[0024] 16. Roller [0025] 71 Primary roller [0026] 72. Secondary
roller [0027] 73. Tertiary roller [0028] 74. Quaternary roller
[0029] 17. Hot chamber [0030] 81 First hot chamber [0031] 82.
Second hot chamber [0032] 18. Winding unit
DETAILED DESCRIPTION OF THE INVENTION
[0033] The inventive system for composite polyethylene naphthalate
industrial yarn production system (1) essentially comprises [0034]
at least one raw mixture forming unit (2) wherein the raw polymer
particles. are prepared, [0035] at least one primary mixture
forming unit (3) wherein the primary polymer mixture is obtained
diluting the raw polymer mixture with the main polymer , [0036] at
least one primary particle loading unit (4) wherein the polymer
particles forming the primary mixture are filled and heated, [0037]
at least one extruder (5) wherein the primary polymer mixture
obtained in primary particle loading unit (4) is melted and spun as
filaments with the help of the spinneret located at the exit,
[0038] at least one cooling unit (6) wherein the material coming
from ext (5) is cooled, [0039] at least one roller (7) wherein the
material is drawn and oriented. [0040] at least one hot chamber (8)
wherein the material is annealed, [0041] at least one winding unit
(9) wherein the material is drawn via rollers (7) by cooling and
heating is wound as yarn.
[0042] Raw mixture forming unit (1) present in inventive system (1)
comprises [0043] at least one raw particle loading unit (21)
wherein polyethylene naphthalate (PEN) and liquid crystal polymer
(LCP) are mixed, [0044] at least one raw molten extruder (22)
wherein the raw molten mixture is extruded, [0045] at least one raw
molten cooling unit (23) wherein the material going out of raw
molten extruder (22) is cooled.
[0046] In the preferred embodiment of inventive system (1), PEN:LCP
ratio of the mixture prepared in raw particle loading unit (21) is
60:40 by weight. The raw material which is prepared in this ratio
and solidified in cooling unit (23 melted and blended in twin screw
extruder (22) is become as particles.
[0047] Primary mixture forming unit (3) comprises [0048] at least
one particle loading and diluting unit (31) wherein the polymer
particles coining from raw mixture forming unit (2) are melted and
diluted with PEN, [0049] at least one primary molten extruder (32)
wherein the primary raw molten mixture is extruded, [0050] at least
one primary molten cooling unit (33) wherein the material going out
of main molten extruder (32) is cooled.
[0051] The raw mixture particles prepared in raw mixture forming
unit (2) are sent to primary molten forming unit (3), and the
polymer particles diluted with pure PEN are produced here. The
PEN:LCP raw mixture is mixed with PEN till the LCP ratio becomes
1-3% by weight in particle loading and diluting unit (31). At the
process is preferably carried out at 260-300.degree. C.
[0052] In one embodiment of the invention, the molecular weight of
the blended polymer particles that are obtained are increased at
the outlet of primary mixture forming unit (3), and their internal
viscosity (IV) is increased above 1 dL/g at 240-250.degree. C. with
solid state polymerization, which takes 12-24 hours. The purpose
here is to increase molecular weight to obtain a polymer suitable
for yarn drawing by decreasing the degradation and chain movement
dining extrusion. %Clystallinity increase is above 100% with solid
state polymerization.
[0053] In one embodiment of the invention, the particles obtained
at primary mixture forming unit (3) with increased IV via solid
state polymerization are dried in vacuum furnace for at least 24
hours at 120-140.degree. C., and loaded to primary particle loading
unit (4) under nitrogen atmosphere at 120.degree. C. In order to
prevent hydrolytic degradation, the humidity value of the blended
and solid state polymerized particles should be under 60 ppm before
loading to extruder (32).
[0054] The primary polymer mixture coming out of primary mixture
forming unit (3) is transferred to primary particle loading unit
(4), and dried here at 100-120.degree. C. and sent to extruder (5)
which is heated to 290-320.degree. C. PEN-LCP polymer mixture
comprising 1-3% LCP by weight is become filaments via spinneret at
the exit of extruder (5). In the preferred embodiment of the
invention, the length/diameter ratio of the spinneret used at
extruder exit (5) is 2-5, the hole diameter is 1 mm. The jet
velocity of the material from extruder (5) is 6-7 m/min, the
residence time of the material in the extruder is 11-12 minutes.
The throughput here is adjusted as 6-7 g/min.
[0055] The PEN-LCP filament coining out of extruder (5) is
transferred to cooling unit (6) preferably treated with cooling
water. In one embodiment of the invention, the length of the
cooling unit is 70 cm and its temperature is 80-95.degree. C. In
the same embodiment of the invention, the distance between extruder
(5) and cooling unit (6) is adjusted as maximum 10 cm. The yarn
coining out of cooling unit (6) first comes to primary roller (71)
and it is sent to secondary roller (72) from here. In the preferred
embodiment of the invention the temperature of primary roller (71)
is between 100-140.degree. C., and the temperature of secondary
roller (72) is between 140-160.degree. C. Cold drawing process is
applied on the yarn between these rollers (7).
[0056] The yarn coming out of secondary roller (72) is transferred
to first hot chamber (81) and heated with hot air to
200-250.degree. C. here and then transferred to tertiary roller
(73). The temperature of tertiary roller (73) may vary between
200-250.degree. C. Therefore, hot drawing is performed between
secondary roller (72) and tertiary roller (73).
[0057] The yarn coming out of tertiary roller (73) enters into
second hot chamber (82) at temperature of 120-180.degree. C. It
comes to quaternary roller (74) which is the last roller without
heating, at room temperature; here it is relaxed in ratio of 1-2%
and sent to winding unit (9) in order to be wound.
[0058] In the preferred embodiment of the invention, the ratio of
primary roller (71) speed to extruder (5) exiting speed is between
4-6. The ratio of tertiary roller (73) speed to--primary roller
(71) speed may vary between 5-6,5.
[0059] When the tenacity and elastic modulus of LCP added PEN yarn
in ratio of 1-3% obtained using inventive system (1) and the yarn
manufactured from. pure PEN material with the total draw ratio of 6
are compared; the tenacity of the composite yarn produced in the
inventive system has increased by 40-45%, and its elastic modulus
has increased by 5-10%. When the total draw ratio is more than 6
the tenacity increase is between 25-30%, the elastic modulus
improves by 2-5%. When the dimensional stability is considered, the
dimensional stability of the 1-3% LCP added PEN yarn is 15-25%
better than the pure PEN yarn in 6 drawing ratio.
[0060] The conversion ratio is in range of 80-90% when the
monofilament yarn which is produced with the inventive system is
twisted as 2 layers with 50 twists.
* * * * *