U.S. patent application number 14/359733 was filed with the patent office on 2014-11-06 for tire cord fabric with tabby.
The applicant listed for this patent is KORDSA GLOBAL ENDUSTRIYEL IPLIK VE KORD BEZI SANAYI VE TICARET ANONIM SIRKETI. Invention is credited to Nurcin Cevahir.
Application Number | 20140325954 14/359733 |
Document ID | / |
Family ID | 47429984 |
Filed Date | 2014-11-06 |
United States Patent
Application |
20140325954 |
Kind Code |
A1 |
Cevahir; Nurcin |
November 6, 2014 |
TIRE CORD FABRIC WITH TABBY
Abstract
The present invention relates to a tire cord fabric with tabbies
located (1) at both ends of tire cord fabric roll which is used as
reinforcement material in tire technology. The tire cord fabric
rolls are tied together by splicing them at the tabby section and
the mechanical and thermal properties of which are improved with
basalt hybrid weft yarns (5). The objective of the present
invention is to provide a tire cord fabric (1) with tabby section
(4) having more improved features in terms of thermal endurance and
mechanical features compared to basaltic fibers used instead of
glass-cotton hybrid fibers.
Inventors: |
Cevahir; Nurcin; (Kocaeli,
TR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
KORDSA GLOBAL ENDUSTRIYEL IPLIK VE KORD BEZI SANAYI VE TICARET
ANONIM SIRKETI |
Kocaeli |
|
TR |
|
|
Family ID: |
47429984 |
Appl. No.: |
14/359733 |
Filed: |
November 13, 2012 |
PCT Filed: |
November 13, 2012 |
PCT NO: |
PCT/IB2012/056386 |
371 Date: |
May 21, 2014 |
Current U.S.
Class: |
57/200 |
Current CPC
Class: |
B60C 9/10 20130101; D02G
3/48 20130101; D02G 3/16 20130101; D10B 2505/022 20130101; D10B
2201/02 20130101 |
Class at
Publication: |
57/200 |
International
Class: |
D02G 3/16 20060101
D02G003/16; D02G 3/48 20060101 D02G003/48 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 22, 2011 |
TR |
2011/11537 |
Claims
1. A cord fabric (1) comprising weft yarns (2) and warp yarns (3),
which constitute the basic structure of it, and characterized by
tabby section (4) which is located on the joint with another tire
cord fabric and wherein the basalt-cotton hybrid weft yarns (5) are
used.
2. A tire cord fabric (1) according to claim 1, characterized by
tabby section (4) which comprised of basalt cotton hybrid weft
yarns (5) the basalt:cotton rate of which varies between 1.0 and
1.3 with the purpose of increasing the mechanical and thermal
features.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to a tire cord fabric with
tabbies located at both ends of tire cord fabric roll which is used
as reinforcement material in tire technology, The tire cord fabric
rolls are tied together by splicing them at the tabby sections, and
the mechanical and thermal properties of the tabby section is
improved with basalt hybrid weft yarn.
BACKGROUND OF THE INVENTION
[0002] Tire cord fabric used as reinforcing material in tire
comprises thousands of parallel warps in longitudinal direction and
a plurality of weft yarns loosely woven vertically to the warp
yarns. The weft yarn in tire cord fabric are generally not load
bearing elements, they are the yarns which only hold the warp yarns
together. The weft yarns are woven in certain density vertical to
the warp yarns along the tire cord fabric.
[0003] Tabby is woven at the end of the tire cord fabric which is
much more dense compared to tire cord fabric, and it is used to
fasten the warps together when the fabric roll is cut and removed
from the weaving loom. Tabby section is used for splicing the
fabric rolls to each other to provide production continuity during
dipping process of tire cord fabric. The length of the tire cord
fabric is about 1000 m, whereas the length of the tabby section
varies between 30 and 60 cm.
[0004] Weft density in tire cord fabric is about 5-10 weft in
decimeter, whereas the weft density of tabby section is between
30-60 weft in decimeter. High weft density at the tabby section is
required to enable to make the tabby durable under high temperature
and high tension applied to the cord fabric during dipping. The
tabby section of the tire cord fabric is not used as reinforcing
material in the tire, it is separated from the cord fabric after a
certain point of the operation.
[0005] Polyester, nylon, rayon, aramide and the like and the hybrid
fibers comprised of mixtures thereof with high strength are used as
warp yarn in the cord fabric. Materials such as staple fiber,
cotton, polyester, rayon are generally used as weft yarn in the
cord fabric. And cotton was the most commonly used weft yarn in the
tabby area in the past. With the improvements in the technology,
today fibers and hybrid fibers known as core-sheath fibers are
used. Nylon-cotton fibers with high elongation are the most common
example for core-sheath fibers.
[0006] The width of the tabby section is a little narrower compared
to the cord fabric width due to the high weft density. High
temperature and high tension applied to the tire cord fabric during
dipping process cause narrowing the tabby section because of the
thermal shrinkage of the cotton fiber used in the tabby section,
and this causes non-uniform warp distribution, weft breakage
followed by fabric splitting along the fabric and folding of
fabrics. All these defects cause high amount of tire cord fabric
scrap in region adjacent to the narrowed tabby section during both
dipping and calendering processes.
[0007] In the European Patent document no EP0077288, one of the
applications known in the state of the art, core-sheath fibers with
low shrinkage are used as weft yarns in tabby area of the cord
fabric.
[0008] U.S. Pat. No. 5,342,678, an application known in the state
of the art, discloses usage of composite yarns comprised of
"cotton-polyester-acrylic" wherein core of glass filaments are used
as sheath.
[0009] United States Patent document no US200900711587A1 discloses
another operation for use of weft yarn with low shrinkage in the
tabby area. Other studies about using weft yarns in tabby area are
disclosed in Patent documents no. US20090071587 and
WO2010032082.
[0010] The mixtures of cotton and glass fibers with low shrinkage
are commonly used as weft yarn in tabby section. The glass-cotton
hybrid cords are wetted with the water based adhesive solution
during dipping process and the wet cotton causes narrowing in the
tabby section because of the shrinking feature. The more the amount
of the glass filament in the glass-cotton hybrid cord structure
increases, the less the shrinkage in the fabric width becomes; the
more the amount of the cotton increases, the more the shrinkage in
the fabric width becomes.
[0011] Narrowing in width of the tabby section of the tire cord
fabric causes various quality problems in the fabric, and the tire
cord fabric waste amount increases in parts adjacent to the tabby
section because of the said problems and the quality problems
occurring affect the final product.
SUMMARY OF THE INVENTION
[0012] The objective of the present invention is to provide a tire
cord fabric with tabby area having improved properties in terms of
thermal endurance and mechanical features compared to basaltic
fibers used instead of glass-cotton hybrid fibers.
DETAILED DESCRIPTION OF THE INVENTION
[0013] "A tire cord fabric with tabby section" developed to fulfill
the objective of the present invention is illustrated in the
accompanying figure wherein,
[0014] FIG. 1 is the schematic view of a tire cord fabric with
tabby area.
[0015] The components given in the figures are numbered and the
numbers refer to the following: [0016] 1. A tire cord fabric with
tabby section [0017] 2. Weft yarns [0018] 3. Warp yarns [0019] 4.
Tabby section [0020] 5. Basalt-cotton hybrid weft yarns
[0021] The inventive tire cord fabric (1) is comprised of weft
yarns (2) and warp yarns (3), which constitute the basic structure
of it, and a tabby section (4) which is located on the joint with
another cord fabric and wherein the basalt-cotton hybrid weft yarns
(5) are used. The basalt fiber used in waft yarns (5) which are
used in the tabby section (4) is environment friendly compared to
the glass fiber. Furthermore, thermal endurance and mechanical
features of the basalt fiber are higher than the glass fiber.
[0022] Basalt-cotton hybrid weft yarns (5) used in the inventive
tire cord fabric (1) enable the tabby area to be more enduring and
lighter. Basalt-cotton hybrid weft yarns (5) minimize the shrinkage
problem occurring during the dipping process and decrease the
amount of waste by eliminating various quality problems.
[0023] In the state of the art, the rate of the glass-cotton
mixture is between 0.6-0.8, the basalt-cotton rate used in the
inventive tire cord fabric (1) is 1.0-1.3; and thus mechanical
features of the tabby section becomes more visible by means of the
basalt used more than the cotton.
[0024] Within the scope of these basic concepts, it is possible to
develop various embodiments of the inventive tire cord fabric with
tabby section (1). The invention cannot be limited to the examples
described herein; it is essentially as defined in the claims.
* * * * *