KR100266130B1 - A cord-sheet of a radial-tire for a car - Google Patents

A cord-sheet of a radial-tire for a car Download PDF

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Publication number
KR100266130B1
KR100266130B1 KR1019970049351A KR19970049351A KR100266130B1 KR 100266130 B1 KR100266130 B1 KR 100266130B1 KR 1019970049351 A KR1019970049351 A KR 1019970049351A KR 19970049351 A KR19970049351 A KR 19970049351A KR 100266130 B1 KR100266130 B1 KR 100266130B1
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South Korea
Prior art keywords
cord
elongation
yarn
tire
fabric
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KR1019970049351A
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Korean (ko)
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KR19990027012A (en
Inventor
김기도
한용식
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조충환
한국타이어주식회사
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Priority to KR1019970049351A priority Critical patent/KR100266130B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/0042—Reinforcements made of synthetic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C2009/2074—Physical properties or dimension of the belt cord
    • B60C2009/2083—Density in width direction
    • B60C2009/2087—Density in width direction with variable density in the same layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
    • B60C2009/2252—Physical properties or dimension of the zero degree ply cords
    • B60C2009/2295—Physical properties or dimension of the zero degree ply cords with different cords in the same layer

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

PURPOSE: A cord sheet of a pneumatic radial tire is provided to prevent a bumpy phenomenon by alternately inserting ultrahigh elongation threads and high elongation threads. CONSTITUTION: A cord sheet of a pneumatic radial tire is formed by bonding rectangular cord sheets wherein many fabric cords are parallel arranged in a regular interval. The central portion of the fabric cord sheet consists of a body thread(1) while both end portions consist of an ultrahigh elongation tread(3) 3 to 5 times the elongation of the body thread, the body thread and a high elongation thread(2) 1.4 to 1.8 times the elongation of the body thread. A bonding portion of the fabric cord sheets have a cut overlap number of 2 to 6 strings. Ends of the fabric cord sheets are overlapped and bonded with each other. Therefore, bulge and dent of the cord sheet are improved.

Description

벌지 및 덴트를 개선한 승용차용 공기입 래디얼 타이어의 코드지Coded paper for pneumatic radial tires for passenger cars with improved bulge and dent

본 발명은 승용차용 공기입 래디얼 타이어의 코드지에 관한 것으로, 특히 텍스타일(Textile) 코드지를 제직하는 과정에서 양 변부에 본체사 중간신율의 약 3배 이상에 달하는 초고신도사와 약 1.6배에 달하는 고신도사를 번갈아 삽입하여 재단 접합부에 범피(Bumpy)가 방지되도록 된 벌지 및 덴트를 개선한 승용차용 공기입 래디얼 타이어의 코드지에 관한 것이다.The present invention relates to a cord paper of a pneumatic radial tire for a passenger car, and in particular, a super high elongated yarn that reaches about three times or more of the median elongation of the main body yarn in both sides in the process of weaving textile cord paper and a high elongated yarn that reaches about 1.6 times. The present invention relates to a cord paper of a pneumatic radial tire for a passenger car, which has improved bulge and dent, which are alternately inserted so that bumpy is prevented at the cutting joint.

일반적으로, 타이어의 텐트(Dent)는 타이어 팽창시에 주로 접합부가 비접합부 만큼 팽창하지 못하기 때문에 발생되는 것으로 도 3의 A에 도시된 바와같이, 함몰된부위(11)를 칭하는 것이며, 벌지(Bulge)는 타이어 팽창시에 코드 간격이 넓다거나 타 부분에 비해 코드 강력이 약한부분 또는 고무 접합부 등의 여러 가지 요인으로 인해 도 3의 B에 돌출된 부분(12)이 발생될 때를 칭하며, 통상 덴트와 벌지를 합쳐서 범피라 말한다. 타이어 상에서 이러한 범피 발생은 타이어 균일성에 지대한 영향을 미치게 되는데 이러한 범피 문제는 코드의 특성과 접합 오버랩(Overlap)부의 코드 가닥수에 큰 영향을 받으므로 타이어 기하학(Geometry), 팽창압력, 코드 확장성 등이 주요 지배인자가 된다.In general, the tent of the tire (Dent) is generated mainly because the joint does not expand as much as the non-bonded portion when the tire is inflated, and refers to the recessed portion 11, as shown in FIG. Bulge) refers to a case in which the protruding portion 12 occurs in B of FIG. 3 due to various factors such as a wider cord spacing or a weaker cord strength than other parts or rubber joints when the tire is inflated. The dent and the bulge together are called bumpy. The occurrence of bumps on a tire has a great influence on tire uniformity. This bump problem is greatly influenced by the characteristics of the cord and the number of cord strands in the joint overlap, so tire geometry, inflation pressure, cord expandability, etc. This is the main controlling factor.

종래에는 상기 문제를 해결하는 방안으로서, 타이어 코드지의 본체사 중간신율 보다 약 1.6배에 달하는 고신도사를 코드지 양 변부에 각각 2~6본씩 삽입하여 타이어 팽창시에 본체사와 동일하게 팽창할 수 있도록 하는 방법과, 코드지의 가장자리 EPI(Ends Per Inch)를 조정하여 결과적으로 전체 코드의 개수를 균일하게 함으로써 범피를 방지하는 방법 등이 있었다.Conventionally, as a solution to the above problem, two to six high-strength yarns, each of which is 1.6 times larger than the median elongation of the main yarn of the tire cord paper, are inserted into each side of the cord paper so that the tire can be expanded in the same way as the main yarn. And a method of preventing bumps by adjusting the end per inch (EPI) of the code sheet and consequently making the total number of codes uniform.

그러나, 상기 방법중 첫 번째 방법은 고신도사의 중간신율이 실제 타이어 팽창에 필요한 저 스트레인(Strain) 영역에서는 본체사와 비슷하여 범피방지의 효과가 없다는 문제점이, 두 번째 방법은 코드의 양 변부 EPI를 중앙부보다 적게 조정하여 제직하기 어렵고 작업자가 압연가공을 하는데 있어 코드지 변부 벌어짐이나 위사 절단 등으로 작업이 힘들어지는 문제점이 있었다.However, the first method of the above method has a problem that the medium elongation of the high-strength yarn is similar to the main yarn in the low strain area required for the actual tire inflation, and thus there is no effect of the anti-pigment. There is a problem that it is difficult to weave by adjusting less than the center portion, and the worker is difficult to work by rolling the edge of the cord paper or cutting the weft in the rolling process.

이에 본 발명은 상기와 같은 제반 문제점을 해소하기 위해 발명된 것으로, 코드지의 양 변부에 각각 본체사 중간신율의 약 3배 이상에 달하는 초고신도사와 약 1.6배에 달하는 고신도사를 번갈아 1본씩 삽입하여, 고신도사만 적용하였을 때 저 스트레인영역에서 효과적으로 늘어나며, 초고신도사만을 사용 했을 때 안전도의 문제발생 가능성을 상호 보완하여 범피문제를 방지할 수 있도록 된 벌지 및 덴트를 개선한 승용차용 공기입 래디얼 타이어의 코드지를 제공함에 그 목적이 있다.Therefore, the present invention was invented to solve the above-mentioned problems, by inserting one super alternating yarn of about three times or more of the high elongation yarn of about 1.6 times, respectively, on both sides of the cord paper. Increasing the bulge and dents to improve the bulge and dents to prevent bumping problems by effectively increasing the possibility of safety problems when only high-strength yarns are used. Its purpose is to provide code.

도 1은 본 발명에 따른 코드지의 평면도,1 is a plan view of a code sheet according to the present invention;

도 2는 본 발명에 따른 코드지의 양변부가 접합된 상태를 도시한 측면단면도,2 is a side cross-sectional view showing a state in which both sides of the cord according to the present invention bonded;

도 3A 내지 3H는 양변부에 초고신도사 및 고신도사가 번갈아 삽입되어 특정한 수의 가닥으로 오버랩된 상태를 도시한 측면단면도,3A to 3H are side cross-sectional views showing a state where super high-strength yarns and high-strength yarns are alternately inserted at both sides and overlapped with a specific number of strands;

도 4는 종래의 기술로 코드지 중 덴트부를 설명하는 측면단면도,Figure 4 is a side cross-sectional view illustrating a dent portion of the code paper in the prior art,

도 5는 종래의 기술로 코드지 중 벌지부를 설명하는 측면단면도이다.Figure 5 is a side cross-sectional view illustrating a bulge portion of the code in the prior art.

1 - 본체사 2 - 고신도사,1-main thread 2-high-fidelity yarn,

3 - 초고신도사 4 - 접합부.3-ultra high priest 4-junction.

상기와 같은 목적을 달성하기 위한 본 발명은, 다수개의 직물코드가 일정간격으로 서로 평행하게 배열되고 그 상하로 얇은 고무쉬트가 코팅되어 직사각형 형태의 판모양으로 이루어진 직물코드지로, 중앙부의 코드는 폴리에스테르 재질의 본체사로 되어지고, 양변부의 각각에 본체사의 신율의 약3배이상되는 한본의 초고신도사가 삽입되어지고 이 초고신도사의 안쪽으로 한본의 본체사가 삽입되어지며 이 본체사 안쪽으로 한 본의 고신도사가 삽입되어지면서, 또 다른 직물코드지의 양변부와 서로 겹쳐서 접합/취부되되, 접합부의 재단 오버랩(Over-Lap)수는 특정한 수의 가닥으로 이루어진다.The present invention for achieving the above object, a plurality of fabric cords are arranged parallel to each other at regular intervals and coated with a thin rubber sheet on the top and bottom of the fabric cord paper made of a rectangular plate, the cord of the center It is composed of ester body yarns, and each of both sides is inserted with an ultra high elongated yarn of about 3 times the elongation of the main body yarn, and the inside of the ultra high elongated yarn is inserted with a main body yarn of the main body. As the high-strength yarn is inserted, it is bonded / attached on both sides of another fabric cord paper, but the number of cutting overlap (Lap) of the joint is made up of a certain number of strands.

이하, 본 발명을 예시된 도면을 참조로 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the illustrated drawings.

도 1은 본 발명에 따른 코드지의 평면도이고, 도 2는 본 발명에 따른 코드지의 양변부가 접합된 상태를 도시한 측면단면도이며, 도 3A 내지 3H는 양변부에 초고신도사 및 고신도사가 번갈아 삽입되어 특정한 수의 가닥으로 오버랩된 상태를 도시한 측면단면도인 바, 본 발명은, 다수개의 직물코드가 일정간격으로 서로 평행하게 배열되어 있는 직사각형 형태의 직물코드지의 중앙부의 코드는 본체사로 이루어져 있으며, 양변부의 각각에 본체사의 신율의 약 3배이상되는 한본의 초고신도사가 삽입되어지고 이 초고신도사의 안쪽으로 한본의 본체사가 삽입되어지며 이 본체사 안쪽으로 한 본의 고신도사가 삽입되어지면서, 또 다른 나머지 직물코드지의 양변부와 서로 겹쳐서 접합/취부되되, 접합부의 재단 오버랩(Over-Lap)수는 특정한 수의 가닥으로 이루어진다.1 is a plan view of a cord paper according to the present invention, Figure 2 is a side cross-sectional view showing a state in which both sides of the cord according to the present invention is bonded, Figures 3A to 3H are alternately inserted into the ultra-high yarn and high elongated yarn on both sides. The cross-sectional side view showing the state overlapped with a certain number of strands, the present invention, the cord of the central portion of the rectangular cord fabric cord is arranged in parallel to each other at a predetermined interval is composed of the main body yarn, On each side of the main yarn, which is about three times greater than the elongation of the main yarn, is inserted. Bonded / mounted on both sides of the rest of the other textile cord paper, but the number of cut-overs of the joint is made up of a certain number of strands. The.

따라서, 상기 접합부의 실험방법으로, 코드지 규격을 폴리에스테르 1500 D/2 30 EPI로 하고, 도 3A 내지 3H와 같은 코드지를 재단작업에서 수동 접합을 하고, 성형은 자동 접합으로 실시하여, 타이어 균일성 기계를 사용하여 성형 및 재단 접합부가 모두 포함된 각각의 타이어에 그 위치를 표시하여 범피여부를 판단하였다.Therefore, in the test method of the joint, the cord paper standard is polyester 1500 D / 2 30 EPI, the cord paper as shown in Figs. 3A to 3H is manually bonded in the cutting operation, and the molding is carried out by automatic bonding, and the tire uniformity is achieved. The location of each tire including both the forming and cutting joints was indicated by using a mechanical machine to determine whether the bumps were covered.

이때 상기의 시험결과치로, 상기의 접합부의 재단오버랩수는 하기의 표1에 도시된 바와 같이, 2-5가닥 오버랩 될 때, 본체사 끼리 조인트 된 성형조인트와 대비하여 덴트량이 감소하여 범피 방지에 효과가 있는 반면에 그 이상(7가닥)에서는 덴트량이 증가하여 별다른 효과를 발휘하지 못한다.At this time, as shown in the above test results, the number of cutting overlaps of the joint is reduced when the 2-5 strands overlap, as compared to the molding joint jointed between the main body yarns to reduce the dents On the other hand, more than that (7 strands), the amount of dents increase, the effect is not much.

재단오버랩수항목Foundation overlap item 2가닥2 strands 3가닥3 strands 4가닥4 strands 5가닥5 strands 6가닥6 strands 7가닥7 strands 덴트증감량(성형 조인트대비)Dent increase / decrease (compared to molded joint) 40%감소40% reduction 23%감소23% decrease 14%감소14% reduction 8%감소8% reduction 0%0% 43%증가43% increase

한편, 덴트 증감량의 수치가 작을수록 덴트에 유리하다.On the other hand, the smaller the numerical value of the dent increase / decrease amount, the more favorable the dent.

이상 설명한 바와 같이 본 발명에 의하면, 타이어 코드지의 오버랩부에서 발생되어지는 범피문제를 해소할 수 있어 타이어의 균일성 향상에 도움이 됨은 물론 초고신도사의 강력문제와 고신도사의 저 스트레인 영역에서의 신율문제를 상호 보완하여 해결할 수 있는 효과가 있다.As described above, according to the present invention, it is possible to solve the bumpy problem generated in the overlapping part of the tire cord paper, which helps to improve the uniformity of the tire, as well as the strength problem of the ultra high elongation yarn and the elongation in the low strain area of the high elongation yarn. There is an effect that can be solved by complementing the problem.

이상에서 설명한 것은 본 발명에 의한 벌지 및 덴트를 개선한 승용차용 공기입 래디얼 타이어의 코드지를 실시하기위한 하나의 실시예에 불과한 것으로, 이하 청구범위내에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 분야에서 통상의 지식을 가진자라면 누구든지 다양한 변경실시가 가능할 것이다.What has been described above is only one embodiment for carrying out the code of the pneumatic radial tire for passenger cars with improved bulge and dent according to the present invention, without departing from the gist of the invention claimed in the following claims. Anyone of ordinary skill in the art to which the invention pertains may make various changes.

Claims (1)

다수개의 직물코드가 일정간격으로 서로 평행하게 배열되어 있는 직사각형 형태의 직물코드지들이 서로 겹쳐져 접합되어 이루어지는 공기입 래디얼 타이어의 코드지에 있어서,In the cord paper of a pneumatic radial tire, in which a plurality of fabric cords are arranged in parallel to each other at regular intervals and overlapped and bonded together, 상기 직물코드지는 그 중앙부가 본체사(1)로 이루어지고 그 양단부는 각각 중간신율이 본체사의 3-5배인 한 본의 초고신도사(3)와 이 초고신도사(3)의 안쪽에 배치되는 한 본의 본채사(1)와 중간신율이 본체사(1)의 1.4-1.8배로서 이 본체사(1) 안쪽에 배치되는 한 본의 고신도사(2)로 이루어지고, 이 직물코드지들은 그 접합부가 2 내지 6 가닥의 재단 오버랩수를 가지며 단부가 서로 겹쳐 접합되는 것을 특징으로 하는 벌지 및 덴트를 개선한 승용차용 공기입 래디얼 타이어의 코드지.The textile cord paper is disposed inside the ultra high elongated yarn (3) and the ultra high elongated yarn (3) of one bone, each of which has a central elongation of 3-5 times the main elongation of the main yarn. The main yarn (1) of one bone and the middle elongation are 1.4-1.8 times that of the main yarn (1), and are made of the high-stretch yarn (2) of bone as long as it is placed inside the main yarn (1). A cord paper for a pneumatic radial tire for a passenger car with improved bulge and dent, characterized in that the joining portion has a cutting overlap number of 2 to 6 strands and the ends are joined to each other.
KR1019970049351A 1997-09-27 1997-09-27 A cord-sheet of a radial-tire for a car KR100266130B1 (en)

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KR1019970049351A KR100266130B1 (en) 1997-09-27 1997-09-27 A cord-sheet of a radial-tire for a car

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KR1019970049351A KR100266130B1 (en) 1997-09-27 1997-09-27 A cord-sheet of a radial-tire for a car

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KR19990027012A KR19990027012A (en) 1999-04-15
KR100266130B1 true KR100266130B1 (en) 2000-10-02

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