WO2012091455A2 - 폴리에틸렌테레프탈레이트 연신사, 타이어 코오드 및 이들의 제조 방법 - Google Patents
폴리에틸렌테레프탈레이트 연신사, 타이어 코오드 및 이들의 제조 방법 Download PDFInfo
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- WO2012091455A2 WO2012091455A2 PCT/KR2011/010237 KR2011010237W WO2012091455A2 WO 2012091455 A2 WO2012091455 A2 WO 2012091455A2 KR 2011010237 W KR2011010237 W KR 2011010237W WO 2012091455 A2 WO2012091455 A2 WO 2012091455A2
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- WO
- WIPO (PCT)
- Prior art keywords
- yarn
- polyethylene terephthalate
- tire
- spinning
- fineness
- Prior art date
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Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/48—Tyre cords
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/298—Physical dimension
Definitions
- the present invention relates to a polyethylene terephthalate stretched yarn, a tire cord and a manufacturing method thereof having a large fineness of 2000 denier or more and showing excellent form stability and uniform physical properties.
- a tire is a composite of fiber / steel / rubber and generally has a structure as shown in FIG.
- the body ply is a core layer that is a core reinforcement inside the tire, also called a carcass, and maintains the shape of the tire while supporting the overall load of the car, withstands stratification, and is strong against flexural movement while driving. This is where fatigue resistance is required.
- synthetic fiber materials such as polyester such as polyethylene terephthalate are applied to such body plies, that is, tire cords.
- the synthetic fiber cord has a great contribution to improving the durability of the tire due to its high strength, but has a disadvantage in that elasticity and form stability are deteriorated after vulcanization of the tire due to high shrinkage with respect to heat.
- a method of improving the morphological stability of the cord through the application of an additional process such as PCI (Post Cure Inflation) has been proposed, but the effect was inadequate.
- the ultra-fast spinning technology has been incorporated into the manufacturing process of tire cords, thereby making it possible to manufacture polyester tire cords having high modulus low shrinkage (HMLS) properties without a PCI process.
- HMLS high modulus low shrinkage
- the unstretched yarn having a high degree of crystallinity has a relatively narrow area that can be stretched, there is a problem that cutting by the non-uniform stretching or friction may easily occur when the ultrafast spinning technique is applied. For this reason, high-speed spinning equipment is not suitable for Constraints apply to the draw ratio, and the loss of the tensile strength of the drawn yarn is greatly reduced due to insufficient stretching.
- the present invention is to provide a polyethylene terephthalate stretched yarn having a large fineness of 2000 denier or more while showing excellent morphological stability and uniform physical properties and a method for producing the same.
- the present invention is to provide a polyethylene terephthalate tire cord and a manufacturing method thereof having a large fineness while showing uniform physical properties and excellent shape stability.
- the present invention comprises at least 90 mol% polyethylene terephthalate, the crystallinity is 40 to 50%, the amorphous orientation index is 0.01 to 0.2, A polyethylene terephthalate stretched yarn having a fineness of monofilament of 2.5 to 4.0 denier, a coefficient of variation (CV) of cross sectional area of 8.0% or less, and a total fineness of 2000 to 4000 denier is provided.
- the present invention is more than 2000 denier fineness by melt spinning polyethylene terephthalate at a speed of 90 mole 0 / a polymer comprising from 0 (inclusive) to 3 the sum radiation or 4 the sum radiation method, 2500 to 4000 through a spinneret m / min Forming an undrawn yarn having; And it provides a method for producing a polyethylene terephthalate stretched yarn comprising the step of stretching the undrawn yarn to a draw ratio of 1.4 to 2.0 times.
- the present invention also comprises the steps of forming a polyethylene terephthalate stretched yarn by the above-described method; Coalescing the stretched yarn; And it provides a method for producing a polyethylene terephthalate tire cord comprising the step of immersing the heat-pyeon yarn in the adhesive solution and heat treatment.
- the present invention is a total size of 4000 to 8000 denier, and a tensile strength of 7.2 to 8.5 g / d, 0.01 g under a load of / d, a dry heat shrinkage factor after the heat treatment for 2 minutes at 177 ° C and, 2.25 g / d It provides a polyethylene terephthalate tire cord having an ES index of 5.0 to 7.0%, which is the sum of the cores under a load of.
- ES index 5.0 to 7.0%
- the term "comprise” or “contains” means that a particular component (or component) is included without limitation, and excludes the addition of other components. It cannot be interpreted.
- Polyethylene terephthalate (hereinafter referred to as ⁇ ) tire cords After melt spinning the polymer PET to prepare a non-drawn yarn, and stretched to obtain a stretched yarn, these PET stretched yarn can be manufactured in a deep cord form by fused and immersed in an adhesive. Therefore, the properties of the undrawn yarn produced through melt spinning of PET and the drawn yarn produced by drawing them are directly or indirectly reflected in the physical properties of the PET tire cord.
- the present inventors applied ultra-fast spinning technology together with the multi-ply spinning method of 3-ply or 4-ply spinning in the course of research on the drawn yarn for tire cords, thereby providing excellent strength and shape while having a large fineness of 2000 denier or more.
- PET stretched yarn having stability and uniform physical properties can be provided, and it has been found that PET tire cords having excellent morphological stability and uniform physical properties with large fineness can be provided and completed the present invention.
- a PET drawn yarn having a predetermined characteristic.
- the PET stretched yarn contains 90 mol% or more of polyethylene terephthalate, has a crystallinity of 40 to 50%, an amorphous orientation index of 0.01 to 0.2, a fineness of monofilament of 2.5 to 4.0 denier, and a coefficient of variation in cross-sectional area (CV). Is 8.0% or less, and the total fineness may be 2000 to 4000 denier.
- the PET forming the stretched yarn can be added various additives in the manufacturing step, in order to exhibit the physical properties of PET suitable for the tire cord, it is preferable that at least 90 mol% or more PET polymer is included.
- PET may mean a case where the PET polymer is 90 mol% or more without any special description.
- PET-stretched yarn of the embodiment can be prepared under controlled melt spinning conditions and stretching conditions described below by applying a super fast spinning technology. Accordingly, the PET stretched yarn of the embodiment may have a crystallinity of 40 to 50% and an amorphous orientation index of 0.01 to 0.2.
- the PET polymer constituting the stretched yarn basically has a crystallized form and is composed of a crystalline region and an amorphous region.
- the PET stretched yarn obtained by the controlled melt spinning conditions and the like as the orientation crystallization phenomenon Due to the high degree of crystallization compared to the previously known PET stretch yarn shows a high degree of crystallinity of 40% or more, for example, 40 to 50%. This high degree of crystallinity allows the PET stretched yarn and tire cord to exhibit high modulus and good morphological stability.
- the PET drawn yarn is lower than the previously known drawn yarn
- the amorphous orientation index indicates the degree of orientation of the chains included in the amorphous region in the stretched yarn, and has a lower value as the matting of the chains in the amorphous region increases.
- the amorphous orientation index decreases, the degree of disorder increases, so that the chains in the amorphous region become a relaxed structure rather than a tense structure, so that the drawn yarn and the tire cord exhibit low shrinkage stress.
- the PET stretched yarn obtained by controlled melt spinning conditions or the like contains more crosslinks per unit volume while forming a fine network structure due to the slipping of the molecular chains thereof during the spinning process. For this reason, the PET stretched yarn may have a strained structure of the chains in the amorphous region while the amorphous orientation index is greatly lowered, thereby exhibiting the developed crystal structure and excellent orientation characteristics.
- the drawn yarn of one embodiment may exhibit higher shrinkage forces, which may result in more improved modulus and better form stability.
- the drawn yarn of one embodiment is more than 2000 denier, for example, very large, such as 2000 to 4000 denier or more, the fineness of the monofilament is adjusted to 2.5 to 4.0 denier, the triple or quadruple spinning method described below And the coefficient of variation (CV.) Of the cross-sectional area is 8.0% or less, for example, 2.5 to 7.5%.
- the coefficient of variation (CV) of the cross-sectional area refers to a value obtained by dividing the standard deviation of the cross-sectional area of each yarn constituting the drawn yarn by the arithmetic mean, and the coefficient of variation of the cross-sectional area is not more than .8.0%. May mean that each yarn constituting the stretched yarn has a very uniform cross-sectional area.
- the stretched yarn of the embodiment can exhibit a very uniform physical properties while having a large fineness have.
- the drawn yarn of one embodiment can have excellent fineness stability and uniform physical properties while having a large fineness of 2000 denier or more, and thus can be preferably applied as a body fly, especially a body fly such as a radial tire requiring large fineness. It enables the provision of PET tire cords.
- the PET stretched yarn of one embodiment described above may have a tensile strength of 8.0 to 9.5 g / d, preferably 8.0 to 9.3 g / d, with a medium draw under a load of 4.5 g / d of 4.0 to 6.5%, preferably 4.5 To 5.5%.
- the stretched PET yarn may be 12.0 to 20.0%, preferably 13.0 to 18.0%.
- PET stretch yarns are manufactured to a large degree of fineness by applying the ultra-fast spinning technology, and there is a limit to the application of high draw ratios, and because of the strong deterioration due to friction between yarns and uneven angles, high strength and excellent and uniformity There was a limit to the physical properties.
- the drawn yarn of the embodiment is manufactured by applying the ultra-fast spinning conditions and the triple-yarn or four-yarn spinning described below, it can exhibit excellent strength and general properties of the above-described range. Accordingly, the PET stretched yarn can be responsive to the needs of the industry to obtain tire cords having a large fineness while showing excellent physical properties, and to provide tire cords applied to various applications such as body plies or cap plies. Very preferably.
- the method for producing such PET stretch yarn is a method of triple spinning or quaternary spinning of a polymer containing 90 mol% or more of polyethylene terephthalate, melt spinning at a speed of 2500 to 4000 m / min through spinning spinneret, to obtain a density of 2000 denier or more. Forming an undrawn yarn having fineness; And stretching the undrawn yarn to a draw ratio of 1.4 to 2.0 times.
- the non-drawn yarn prepared through the ultra-fast spinning conditions described above may exhibit a crystallinity of 10 to 30% and a low amorphous orientation factor of 0.08 to 0.2.
- the PET polymer forming the non-drawn yarn basically has a crystallized form, and is composed of a crystalline region and an amorphous region.
- the undrawn yarn obtained under the ultra-fast spinning conditions described above has a higher degree of crystallization than the previously known undrawn yarn (usually crystallized to less than 7.0%) due to the orientation crystallization phenomenon, 10% or more, for example, 10 to 30% High crystallinity of?
- the non-drawn yarn may exhibit an amorphous orientation index of 0.2 or less, for example, 0.08 to 0.2, which is significantly lower than previously known non-drawn yarn by the orientation crystallization phenomenon, and furthermore, molecular chains constituting the undrawn yarn are radiated. Sliding during the process can lead to the inclusion of more crosslinks per unit volume while forming a fine network structure.
- the drawn yarn obtained therefrom may also exhibit high crystallinity and low amorphous orientation index as described above, which makes it possible to provide the drawn yarn and tire cords exhibiting excellent form stability.
- PET stretch yarn is manufactured by applying a triple or quadruple spinning method together with the ultra-fast spinning conditions described above.
- the amount of polymer discharged as a target of the angle is relatively small in one radiation tube, and the disturbance caused by the inter-filament interference can be suppressed.
- Small monofilament fineness, for example 2.5-40 denier, which is essential for morphological stability expression, can be secured. This makes it possible to uniformly angle the entire polymer discharge even when the ultra-fast spinning technology is applied, thereby greatly improving the cooling efficiency.
- the action and effect of the application of the ultra-fast spinning technique described above can also be preferably maintained. Therefore, the above-mentioned high crystallinity and low amorphous orientation index of the drawn yarn can be appropriately expressed even in the process of producing a drawn yarn of large fineness, and a drawn yarn and a tire cord having better shape stability can be provided.
- PET drawn yarns stratifying the physical properties of one embodiment can be produced, which has a large fineness, exhibits excellent strength and excellent form stability, and has a uniform physical properties and cross-sectional area will be. From this, the provision of tire cords with large fineness and excellent and uniform properties and excellent form stability These PET tire cords and the like can be used very well for tire cords for body plying of pneumatic tires, in particular tire cords for applications requiring large fineness.
- unstretched yarn is manufactured by melt spinning a PET polymer in a triple or quaternary manner.
- the polymer is melt spun under a spinning speed of 2500 to 4000 m / min, preferably 3500 to 4000 m / min.
- the spinning speed is 4000 m in order to give the minimum angle time required for the production of the undrawn yarn. It is appropriate to be less than / min.
- the melt spinning of the polymer proceed under a spinning tension of 0.5 to 1.2 g / d. That is, in order to obtain the non-drawn yarn properties required in the present invention, for example, high crystallinity, the spin tension is preferably 0.5 g / d or more, and the spin tension is used to prevent the filament from being cut or deteriorated with more than necessary tension. It is preferable that silver is 1.2 g / d or less.
- the PET polymer may have an intrinsic viscosity of 0.8 to 1.5 dl / g, preferably 1.2 to 1.5 dl / g.
- the strength of the stretched yarn and the tire cord can be further improved.
- the triple or quadruple spinning method together with the melt spinning conditions described above, it is possible to uniform uniform angle, so that the reduction of the physical properties during the manufacturing process, while drawing a large fineness of the fineness showing a uniform physical properties and cross-sectional area And that tire cords can be produced as already described above.
- the uniform physical properties and cross-sectional area are due to the uniform angle of incidence to have a uniform cross-sectional area from the unstretched yarn, and the unstretched yarn manufactured by the above-described process may have a coefficient of variation (CV) of the cross-sectional area of 8.0% or less. Can be.
- CV coefficient of variation
- the unstretched yarn is stretched to produce a PET stretched yarn. This stretching step may be carried out in a direct spinning method (Direct Spinning & Drawing, hereinafter referred to as a 'DSD method') in which spinning and stretching are continuously performed in a single process according to a conventional drawing yarn manufacturing process.
- the stretching step is preferably carried out so that the draw ratio is 1.4 to 2.0 times. That is, in order to manufacture a tire cord having excellent strength and form stability, it is preferable that it is 1.4 times or more, and in the case of ultra-high spinning spinning at a spinning speed of 2500 to 4000 m / min, limitation of draw ratio adjustment according to the spinning equipment occurs.
- the draw ratio is preferably 2.0 times or less due to the increase in the degree of orientation and crystallinity of the undrawn yarn due to the decrease in the fineness of the monofilament due to the application of the high-multi filament method.
- the fineness of the monofilament preferably represents 2.5 to 4.0 denier.
- the fineness of the monofilament is preferably 2.5 denier or more.
- the fineness of a monofilament is 4.0 denier or less.
- the method for producing a PET tire cord may include forming polyethylene terephthalate stretched yarn by the above-described method; Combining the stretched yarns to form a twisted yarn; And immersing the conjugated twisted yarn in an adhesive solution and performing heat treatment.
- the coalescing step is, for example, extending the drawn yarn of the total fineness of 2000 to 4000 denier 'Z' with a twist number of 100 to 400 TPM (twist per meter) per unit length,
- the 'Z' lead yarn 1 to 3 ply 'S' lead to 100 to 400 TPM can be carried out by a method for producing a combined twist yarn of total fineness of 4000 to 8000 denier.
- the adhesive solution one used for the manufacture of a conventional tire cord, for example, Resorcinol-Formaldehyde-Latex (RFL) adhesive solution may be used.
- the heat treatment process may proceed for 90 to 360 seconds under a temperature of 230 to 260 ° C, preferably for 90 to 240 seconds under a temperature of 240 to 250 ° C, more preferably of 245 to 250 ° C. It can be carried out for 90 to 120 seconds under the temperature.
- RTL Resorcinol-Formaldehyde-Latex
- the tire cord can be manufactured by the above method.
- each of the above steps is not only an example of a tire cord manufacturing method, but also may further include a step that is commonly performed in the art before or after each step.
- Tire cords made according to this process can have a tensile strength of 7.2 to 8.5 g / d, with a large fineness of 4000 to 8000 denier total fineness, and under a load of 0.01 g / d, 2 minutes at 177 "C.
- the dry heat shrinkage rate after heat treatment and the shape stability index (ES index), which is the sum of the middle bodies under a load of 2.25 g / d, may be 5.0 to 7.0%, wherein the shape stability index (ES index) is 'dry heat'.
- the tire cord may exhibit physical properties such that 3.0 to 5.5% of the middle body under a load of 2.25 g / d, the body length is 15.0% or more, and suitably 15.0 to 17.0%.
- the tire cord manufactured according to the above-described process is manufactured by applying a combination of ultra-fast spinning technology and three- or four-ply spinning method, and exhibits excellent tensile strength and excellent shape stability while having a large fineness and uniformity. It can exhibit various physical properties. Therefore, such tire cords are very preferably applied as body ply cords of pneumatic tires, so that they can support the overall vehicle load very effectively. However, the use of the tire cord is not limited thereto, and may be applied to other uses such as a cap fly.
- a tire cord having a large fineness and showing excellent shape stability and strength and having uniform physical properties and a method of manufacturing the same can be provided.
- Such tire cords are preferably used for applications such as body plying of pneumatic tires, and can improve vehicle control and ride comfort.
- FIG. 1 is a partial cutaway perspective view showing a configuration of a general tire.
- PET undrawn yarns of Examples 1 to 6 were prepared by melt spinning and engraving PET polymer chips.
- the conditions of the radiation used at this time was as shown in Table 1, The remaining conditions were in accordance with conventional conditions for the production of PET undrawn yarn.
- the unstretched yarn was stretched, heat fixed, and wound at a predetermined draw ratio shown in Table 1 to prepare a PET stretched yarn.
- Comparative Examples 1 to 5 manufactured of 2000 or more denier PET yarn to which single- or double-die spinning and ultra-fast spinning techniques are applied)
- PET stretch yarn was prepared as an ultra-fast spinning technique using a single-shot or double-layer spinning method.
- the conditions of the melt spinning used at this time are shown in Table 1 below.
- AOF amorphous orientation index
- AOF (birefringence-crystallinity (%) * 0.01 * crystal orientation index (COF) * 0.275) / ((1-crystallinity (%) * 0.01) * 0.22)
- Comparative Examples 1 to Manufactured over 2000 denier drawn yarns by using single-shot or double-layer spinning method the drawn yarns do not satisfy the amorphous orientation index of 0.01 to 0.2 even though ultra-fast spinning technology is applied, and furthermore, It was found to represent the coefficient of variation.
- Comparative Examples 1 to 5 were found to exhibit generally poor tensile strength.
- Examples 1 to 6 are prepared by the triple or quadruple spinning method, the crystallinity is 40 to 50%, the amorphous orientation index is 0.01 to 0.2, the fineness of the monofilament is 2.5 to 4.0 denier, the cross-sectional area
- the coefficient of variation (CV.) Of was 8.0% or less, and the total fineness of 2000 to 4000 denier was found to simultaneously satisfy the characteristics.
- the physical properties such as tensile strength, core length, and elongation were excellent while showing uniform physical properties due to the variation coefficient of the low cross-sectional area.
- twisted yarns of two strands of 'Z' stranded with a predetermined total fineness, and number of twists per unit length (TPM) into 'S' strands of the same linkage
- TPM number of twists per unit length
- the drawn yarn, drawn yarn fineness, twist water (Twist Multiplier, TM) and the cord heat treatment conditions are shown in Table 3 below, and the composition and drying conditions of the RFL adhesive solution are typical production conditions of PET tire cord.
- PET tire cords were prepared using the drawn yarns prepared under the conditions of Comparative Examples 1 to 5, wherein the used drawn yarns, drawn yarn fineness, tied water and cord heat treatment conditions are shown in Table 3 below. TABLE 3
- Dry heat shrinkage was measured after 2 minutes using a dry heat shrinkage measuring device (manufacturer: TESTRITE, model name: MK-V) at a load of 0.01 g / d at 177 ° C.
- Formation stability index (E-S index): The sum of the core and dry heat shrinkage measured by the above method.
- Comparative Example 10 6.75 4.1 15.7 4.1 8.2 As can be seen from Table 3 and Table 4, Comparative Examples 6 to 10 are tensile strength or elongation by using a drawn yarn prepared by applying a single-shot or two-ply spinning method, The shape stability index is out of the desirable range. In particular, in the case of Comparative Examples 6 to 8 as described above, the result of poor shape stability was shown by the increase of the shape stability index (E-S Index) indicating the shape stability. In addition, in Comparative Example 9, it was confirmed that the poor physical properties in dry heat shrinkage rate, form stability index, and the like. In addition, even in Comparative Example 10, it was confirmed that the poor physical properties such as low tensile strength. This may be because the tire cords of these comparative examples were made from the drawn yarns of the comparative examples which deviated from the appropriate amorphous orientation index and coefficient of variation of the cross-sectional area.
- E-S Index shape stability index
- Comparative Example 9 it was confirmed that the poor physical properties in dry heat shrinkage
- Examples 7 to 12 have excellent physical properties due to the excellent tensile properties, tensile strength, core length, dry heat shrinkage rate, and form stability index of the cords as the stretched yarns according to Examples 1 to 6 are used. It turned out.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11853427.0A EP2660370B1 (en) | 2010-12-29 | 2011-12-28 | Poly(ethyleneterephthalate) drawn fiber, tire-cord, and method of manufacturing the poly(ethyleneterephthalate) drawn fiber and the tire-cord |
CN201180063845.XA CN103282561B (zh) | 2010-12-29 | 2011-12-28 | 拉伸聚对苯二甲酸乙二醇酯纤维、轮胎帘线以及它们的制备方法 |
JP2013546044A JP5802761B2 (ja) | 2010-12-29 | 2011-12-28 | ポリエチレンテレフタレート延伸糸、タイヤコードおよびこれらの製造方法 |
US13/997,733 US20130302610A1 (en) | 2010-12-29 | 2011-12-28 | Drawn poly(ethyleneterephthalate) fiber, a tire cord, and their preparation methods |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2010-0138191 | 2010-12-29 | ||
KR20100138191 | 2010-12-29 |
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WO2012091455A2 true WO2012091455A2 (ko) | 2012-07-05 |
WO2012091455A3 WO2012091455A3 (ko) | 2012-10-18 |
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PCT/KR2011/010237 WO2012091455A2 (ko) | 2010-12-29 | 2011-12-28 | 폴리에틸렌테레프탈레이트 연신사, 타이어 코오드 및 이들의 제조 방법 |
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US (1) | US20130302610A1 (ko) |
EP (1) | EP2660370B1 (ko) |
JP (1) | JP5802761B2 (ko) |
KR (1) | KR20120076324A (ko) |
CN (1) | CN103282561B (ko) |
WO (1) | WO2012091455A2 (ko) |
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US10589570B2 (en) | 2015-03-06 | 2020-03-17 | Bridgestone Corporation | Tire |
JP6018726B1 (ja) * | 2015-03-06 | 2016-11-02 | 株式会社ブリヂストン | タイヤ |
DE102016214276A1 (de) * | 2016-08-02 | 2018-02-08 | Continental Reifen Deutschland Gmbh | Verstärkungslage für Gegenstände aus elastomerem Material, vorzugsweise für Fahrzeugluftreifen, und Fahrzeugluftreifen |
EP3675920A4 (en) | 2017-09-01 | 2021-05-26 | Poly-Med, Inc. | POLYMERS FOR ADDITIVE MANUFACTURING |
KR101979353B1 (ko) * | 2017-11-01 | 2019-05-17 | 효성첨단소재 주식회사 | 폴리에스터 타이어코드와 이를 이용한 레이디얼 타이어 |
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- 2011-12-28 WO PCT/KR2011/010237 patent/WO2012091455A2/ko active Application Filing
- 2011-12-28 JP JP2013546044A patent/JP5802761B2/ja active Active
- 2011-12-28 KR KR1020110144493A patent/KR20120076324A/ko not_active Application Discontinuation
- 2011-12-28 CN CN201180063845.XA patent/CN103282561B/zh active Active
- 2011-12-28 EP EP11853427.0A patent/EP2660370B1/en active Active
- 2011-12-28 US US13/997,733 patent/US20130302610A1/en not_active Abandoned
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See also references of EP2660370A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105063775A (zh) * | 2015-08-18 | 2015-11-18 | 荣盛石化股份有限公司 | 一种熔体纺差别化纤维的制造方法 |
Also Published As
Publication number | Publication date |
---|---|
EP2660370A2 (en) | 2013-11-06 |
EP2660370A4 (en) | 2014-06-11 |
CN103282561B (zh) | 2015-11-25 |
JP5802761B2 (ja) | 2015-11-04 |
CN103282561A (zh) | 2013-09-04 |
EP2660370B1 (en) | 2019-03-06 |
KR20120076324A (ko) | 2012-07-09 |
WO2012091455A3 (ko) | 2012-10-18 |
JP2014504338A (ja) | 2014-02-20 |
US20130302610A1 (en) | 2013-11-14 |
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