WO2008029470A1

WO2008029470A1 - Polyester fabric with bamboo-blind-like configuration

Info

Publication number: WO2008029470A1
Application number: PCT/JP2006/317742
Authority: WO
Inventors: Masanao Kohashi; Katsutoshi Imaoka
Original assignee: Toyo Boseki Kabushiki Kaisha
Priority date: 2006-09-07
Filing date: 2006-09-07
Publication date: 2008-03-13

Abstract

A polyester fabric with bamboo-blind-like configuration that excels in heat resistant adhesion to rubber and avoids curling during bonding treatment operation, being of high quality. There is provided a fabric with bamboo-blind-like configuration, characterized by alternately drawing together, as warp yarns, polyester forward twisted cords resulting from Z-direction downward twisting followed by S-direction upward twisting and polyester backward twisted cords resulting from S-direction downward twisting followed by Z-direction upward twisting.

Description

Specification

Polyester woven fabric

Technical field

[0001] The present invention relates to a polyester knit fabric that can be suitably used for rubber reinforcement applications. More specifically, the present invention is excellent in heat-resistant adhesion to rubber and prevents generation of curls in an adhesion treatment process. It relates to high-quality silk fabrics.

The polyester woven fabric obtained by the present invention is suitable for use in tire cords, particularly cap ply cords, V belts, conveyor belts, hoses and the like used for outer layer portions of radial tires.

Background art

[0002] Polyester fibers typified by polyethylene terephthalate have excellent mechanical properties, dimensional stability, and durability, and are used for industrial materials, particularly rubber reinforcement for tire cords, V-belts, conveyor belts, hoses, etc. Widely used.

Such a rubber reinforcing fiber is usually subjected to a lower twist and an upper twist to form a twisted yarn cord. Using this twisted yarn cord as a warp, 1000 to 2000 warps are arranged, and these warps are not separated. In this way, it is used for rubber reinforcement applications such as tires, belts and hoses in the form of woven fabrics produced by weaving weft yarns.

[0003] The above woven fabric is usually subjected to a mechanical softening treatment in order to improve workability in a subsequent process after being given an adhesive and undergoing a drying and heat treatment process. Here, the mechanical softening treatment means that the koji fabric is bent by an edge blade to soften the cord that has hardened during the drying heat treatment. There was a problem of curling, so-called curling, and there was a problem that workability was lowered in the post-process and product defects occurred.

[0004] In order to solve such a problem, for example, Patent Document 1 discloses a method for lowering a treatment temperature in a drying and heat treatment process of a twisted yarn cord prior to a mechanical softening treatment. However, there was a problem that the adhesive strength of the woven fabric to the rubber decreased. In Patent Document 2, the ratio of the number of twists of the lower twist and the number of twists of the upper twist and the mechanical softening treatment are described. A method for specifying the bending angle and cord tension is disclosed.

However, dip treatment was applied to improve adhesion to rubber, especially heat-resistant adhesion (see, for example, Patent Documents 3 and 4). Cannot be completely prevented.

Patent Document 1: Japanese Patent Application Laid-Open No. 61-12952

Patent Document 2: JP 2004-30843 A

Patent Document 3: Japanese Patent Laid-Open No. 2000-8280

Patent Document 4: Japanese Unexamined Patent Publication No. 2000-212875

Brief Description of Drawings

[0006] Fig. 1 is a view of a test piece used in a peel adhesion test.

Disclosure of the invention

Problems to be solved by the invention

[0007] The present invention has been made against the background of the above circumstances, and has a high-quality polyester film that has excellent heat-resistant adhesiveness with rubber and that prevents the occurrence of curling in the adhesion treatment process. The object is to provide a woven fabric.

Means for solving the problem

[0008] As a result of intensive investigations to achieve the above object, the present inventor has found that the occurrence of curling is closely related to the untwisting torque between warps constituting the woven fabric, and finally the present invention. It came to complete. That is, the present invention has the following configuration.

[0009] 1. A polyester normal twisted cord with a Z twist and then a S twist, and a polyester reverse twist cord with a S twist and then a Z twist Woven woven fabrics characterized by being alternately arranged as warps.

[0010] 2. (A) a treatment liquid containing a carrier as the treatment liquid in (1), (B) an aqueous solution of a blocked deisocyanate, (C) a dispersion of an epoxy compound, (D) a resorcin formaldehyde latex ( (RFL) After the four liquids are combined and processed by multistage processing of one or more stages, and after processing with the first processing liquid that contains at least (A) a processing liquid containing a carrier , At least (D) resorcinol formaldehyde latex (RFL) A woven fabric characterized by being subjected to a dipping treatment for imparting adhesion to rubber to be treated with the second treatment liquid containing the mixed liquid.

[0011] A tire cap ply kite fabric using the kite fabric according to 1 or 2 above.

The invention's effect

[0012] According to the present invention, it is possible to provide a high-quality polyester knit fabric that has excellent heat-resistant adhesiveness with rubber and prevents curling in the adhesion treatment process. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described in detail.

The polyester fiber material constituting the polyester knit fabric of the present invention is a drawn yarn obtained by drawing and heat-treating undrawn yarn obtained by melt spinning polyethylene terephthalate or polyethylene terephthalate copolymerized with a small amount of a third component. (Raw yarn).

The polyethylene terephthalate raw yarn is made of polyester fiber surface-activated with an epoxy compound or an isocyanate compound at the stage of undrawn yarn or drawn yarn as disclosed in Japanese Patent Publication No. 47-49768. In particular, it is preferable that the polyethylene terephthalate yarn is treated with an epoxy compound having two or more epoxy groups in the spinning, drawing or post-treatment step. Preferable examples of the epoxy compound include polyglycidyl ether compounds of aliphatic polyhydric alcohols such as glycerol 'polyglycidyl ether, diglycerol' polyglycidyl ether, polyglycerol 'polyglycidyl ether, sorbitoleol' polyglycidyl ether, and the like. It is done. Further, it is preferable that the raw yarn treated with the epoxy compound and the curing agent is heat-treated at a temperature of 40 ° C. to 80 ° C. for 24 hours to 240 hours.

[0014] In order to obtain a knit fabric in which curling is prevented according to the present invention, a polyester regular twist in which the raw yarn is subjected to a Z twist in the Z direction, and then the two twisted yarns are subjected to an S twist in the S direction. 1000 to 2000 polyester reverse twisted cords with the cord and the yarn twisted in the S direction and then the yarn twisted in the Z direction on the two twisted yarns are alternately arranged as warps, In order to prevent these warp yarns from being scattered, it is necessary to drive 2 to 5 wefts per 5 cm and weave them. If the normal and reverse twisted cords are not arranged alternately, the untwisting torque between the warps cannot be canceled out, and curling cannot be completely prevented. Furthermore, the ratio of the number of twists of the twisted cord and the twisted cord is 0.6.60 ≤ forward twist / reverse twist ≤ 1.67. The number ratio of the lower twist and the upper twist is not particularly limited.

[0015] The dipping treatment applied to the woven fabric includes: (A) a treatment liquid containing a carrier, (B) a blocky succinate aqueous solution, (C) a dispersion of an epoxy compound, and (D) a resorcin-formaldehyde-latex (RFL) mixture. Multi-stage treatment with one stage or more than two stages is preferred by using a combination of four liquids. (A) A treatment solution containing a carrier and (B) a first treatment solution containing a blocked isocyanate solution, followed by heat treatment, and then (B) a blocked isocyanate solution, (C The first treatment is more preferably a two-stage treatment in which a second treatment solution containing a dispersion of an epoxy compound and a (D) resorcin-formaldehyde latex (RFL) mixture is blended. More preferably, after the treatment with the solution, a heat treatment is performed, and then a three-stage treatment is performed by repeatedly treating the second treatment solution twice.

[0016] The first treatment liquid preferably contains 40 to 95 parts by weight of (B) blocked isocyanate solids based on 100 parts by weight of the total solids. If it is less than 40 parts by weight, the resin bridge is insufficient and sufficient heat-resistant adhesiveness cannot be obtained, and if it exceeds 95 parts by weight, the carrier component is reduced, and in this case, sufficient heat-resistant adhesiveness is also obtained. Absent. The resin adhesion amount to the polyester fiber of the first treatment liquid is preferably 1 to 5% by weight. If the amount is less than 1% by weight, sufficient heat resistance cannot be obtained. If the amount is more than 5% by weight, the cord becomes stiff and the strength decreases, fatigue resistance decreases, and the occurrence of dip wrinkles increases. Not good

[0017] The second processing liquid preferably contains 5 to 40 parts by weight of (B) blocked isocyanate solids per 100 parts by weight of the total solids. If the amount is less than 5 parts by weight, the resin bridge is insufficient and sufficient heat-resistant adhesiveness cannot be obtained. If the amount is more than 40 parts by weight, the RFL component becomes too small and sufficient initial adhesiveness cannot be obtained. Furthermore, the second treatment liquid has (C) 0.5 to 10 parts by weight of the solid content of the epoxy compound based on 100 parts by weight of the total solid content. If it is less or more than this range, good adhesion cannot be obtained. More preferably, it is 0.5 to 6 parts by weight. The amount of resin attached to the polyester fiber of the second treatment liquid is preferably 2 to 10% by weight. If less than 2% by weight, sufficient initial adhesion and resistance If thermal adhesiveness is not obtained and the amount exceeds 10% by weight, the adhesiveness may be lowered due to blistering, etc., the cord becomes hard and the mechanical properties such as strength reduction and fatigue resistance, It is not preferable from the viewpoint of quality, such as the generation is increased.

[0018] The treatment liquid (A) containing the carrier of the present invention is a solution obtained by dissolving, dispersing or emulsifying the carrier in water. Among them, a solvent other than the carrier, a dispersion, an emulsifier, a stabilizer, etc. Auxiliaries, spinning oils and the like may be contained.

The carrier as used herein is a substance whose action is not sufficiently clear, but which penetrates and diffuses inside the polyester fiber, increases the swelling of the polyester fiber, and changes the internal structure of the fiber so that adhesive molecules can easily enter. In other words, the carrier action is used to firmly bond the aqueous solution of blocked sulfonate, the epoxy compound dispersion and the RFL solution to the polyester fiber to improve heat-resistant adhesion.

[0019] Preferred carriers are phenol derivatives such as p-chlorophenol and o-phenylphenol, halogenated benzenes such as monochlorobenzene and trichlorobenzene, and a reaction product of resorcin, p-chlorophenol and formaldehyde. Things can be raised. A particularly preferred example is a reaction product of resorcin, p-chlorophenol and formaldehyde.

[0020] Treatment liquid (D) RFL is an initial condensate obtained by reacting resorcin and formalin in the presence of an acid or alkali catalyst, styrene butadiene latex, carboxy-modified styrene butadiene latex, styrene butadiene butyl pyridine latex, carboxy modified styrene butadiene butyl. Pyridine latex, acrylonitrile butadiene latex, natural rubber

One or two or more mixed aqueous solutions such as polybutadiene latex are used. Preferably, excellent heat-resistant adhesiveness can be obtained by using styrene butadiene butyl pyridine latex or carboxy-modified styrene butadiene pyridine latex. Any of the known techniques can be used for the mixing ratio of resorenosin, honoremarin, and latex.

[0021] In JP-B-60-31950, a dispersion of blocked isocyanate and Z or an epoxy resin is used as a component other than the carrier and RFL. As a result of intensive investigation by the present inventors, the treatment liquid (B) When the blocked isocyanate is water-soluble, preferably the average number of functional groups is 3 or more, more preferably 4 or more, excellent heat resistant adhesion can be obtained. It is. With dispersible blocked isocyanate, the effect of penetration of the treatment liquid into the fiber by combining with a carrier is insufficient, and good adhesion cannot be obtained. Polyfunctionalization of the isocyanate group results in a harder cord compared to the same resin adhesion amount, suggesting that the crosslink density of the resin is improved, and as a result, excellent heat-resistant adhesion even when the resin adhesion amount is lowered There is an advantage that it can be obtained.

[0022] The isocyanate component is not particularly limited, but tolylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate polyisocyanate is preferable, and diphenylmethane diisocyanate is more preferable. Cyanate-based polyisocyanates (mixed with bifunctional diphenylmethane diisocyanate) may exhibit excellent performance.

[0023] The thermal dissociation temperature of the blocking agent component is 100 ° C to 200 ° C, and preferable examples include phenols, ratatas, oximes and the like. If the thermal dissociation temperature is lower than 100 ° C, the isocyanate cross-linking reaction starts in the drying stage and the infiltration into the fiber becomes uneven. On the other hand, when the temperature is higher than 200 ° C, a sufficient crosslinking reaction cannot be obtained, and in all cases, the heat resistant adhesiveness is lowered.

[0024] The treatment liquid (C) epoxy resin is not particularly limited, but preferably a bifunctional or higher functional epoxy increases the crosslink density of the resin and provides excellent heat resistant adhesiveness. Preferred examples of epoxy compounds include glycerol 'polyglycidyl ether, diglycerol * polyglycidyl ether, polyglycerol * polyglycidyl ether, sorbitol, polyglycidyl ether, etc. Indicates.

[0025] The effect of improving the heat-resistant adhesiveness is that the use of water-soluble blocked isocyanate makes the diffusion of the isocyanate into the fiber more uniform by the carrier, and the isocyanate causes a decrease in the heat-resistant adhesive force. The polyester has a synergistic effect that it acts more effectively as a scavenger for amines in rubber compounds and that the polyfunctional isocyanate increases the crosslink density of the resin and improves the barrier properties against the penetration of amines into the fibers. This is thought to be the result of the suppression of deterioration. This is also suggested by the fact that the cord strength retention after overvulcanization is remarkably improved.

[0026] This effect is more prominent by processing with the combination of the first processing liquid and the second processing liquid described above. It will be a thing. In other words, in the first treatment liquid, the amine barrier layer made of isocyanate binds firmly to the fiber by the carrier effect, and the deterioration of the fiber and the adhesive layer adjacent to the fiber and their interface are remarkably suppressed. The treatment solution is thought to improve the heat resistance of the RFL resin due to the cross-linking modification effect of the latex with isocyanate and epoxy, and to achieve excellent heat-resistant adhesion and strong retention due to the overall effect.

[0027] Further, when the second treatment liquid is repeatedly treated twice, excellent heat-resistant adhesion can be obtained with the same resin adhesion amount as compared with the single treatment. This effect is thought to be due to the fact that the resin adhesion unevenness is improved by reducing the amount of resin adhesion per application and recoating.

[0028] As an evaluation measure of heat-resistant adhesion, rubber coverage in a peel adhesion test between rubber cords during overvulcanization and / or heat is used. In general, when a polyester tire cord is exposed to a high temperature in rubber for a long time, its adhesive strength decreases. This phenomenon is thought to be due to deterioration of rubber and adhesive (dip resin) and fibers and their interfaces. In conventional polyester tire cords, there is almost no rubber adhering to the cord after adhesion failure, so there was no longer any failure at the fiber and / or adhesive and their interface than the cohesive failure of rubber. . On the other hand, with nylon 66, which has excellent heat-resistant adhesion, the cord after adhesion failure is almost covered with rubber, and the fracture site has shifted to the rubber side, not the layer from the fiber to the adhesive. From these viewpoints, it is possible to judge the superiority or inferiority of the heat-resistant adhesiveness by evaluating the rubber coverage. For tire cap ply applications, the rubber coverage after initial vulcanization is 90% or higher, and the rubber coverage after overvulcanization is 80% or higher in both normal temperature and 150 ° C high temperature atmospheres. I prefer it.

[0029] The polyester woven fabric of the present invention obtained by force is a high-quality woven fabric excellent in heat-resistant adhesion with rubber and prevented from curling in the bonding treatment process, and has various industrial reinforcements. It is extremely useful as a textile fabric for reinforcing rubber, such as caps, cords, belts and hoses, which are required to have high heat resistance and adhesive properties.

Example

[0030] Next, the present invention will be specifically described with reference to Examples and Comparative Examples, but the present invention is not limited thereto. Each physical property value is measured by the following method.

[0031] <Strong elongation> 20 according to JIS-L1017 8.5 (2002). 〇 After standing for more than 24 hours in a private room with 65% 1¾1 temperature and humidity control, the tensile strength was measured with a tensile tester.

[0032] <Fineness>

20 in accordance with JIS-L1017 8.3 (2002). 〇 After standing for 24 hours or more in a private room with 65% 1¾1 temperature and humidity control, the fineness was measured.

[0033] <Pull-out adhesion>

The T test (Method A) in JIS-L1017 Annex 1.3.1 (2002) was evaluated by an improved H test.

Place the treated cord into the tire rubber for l _cm length and vulcanize at 140 ° C for 40 minutes (initial) or 1 70 ° C for 60 minutes (over vulcanization), and then remove the cord from the rubber at room temperature. The force required to pull out at 300 mm / min is expressed in N / cm.

[0034] <Peeling adhesion>

JIS-K6256 5. (1999) “Cloth and vulcanized rubber peel test” was measured by an improved method. A test piece was prepared by laminating the processing cord and tire rubber shown in Fig. 1 (rubber thickness 0.7 mm, width 25 mm, number of cords to be corded 33), 140 ° C at 40 ° C. After vulcanization for 60 minutes (over vulcanization) at 170 ° C for 60 minutes (initial) or at room temperature, cut the test piece at the top and bottom (parts a and b in Fig. 1) and pinch 50mm / The force required to peel in minutes is expressed in NZ25mm. Further, the test piece was heat-treated in an oven at 150 ° C. for 10 minutes, and the peeling force was measured in the same manner (when hot).

After the test, the rubber coverage of the cord on the peeled surface was visually evaluated. The cord was completely covered with rubber, and the coverage was 100%, and no cord was attached at 0%.

[0035] <Strong deterioration in rubber>

The treatment cord is embedded in tire rubber, vulcanized at 170 ° C for 180 minutes, the cord is taken out from the rubber, the strength after vulcanization is measured, and it is expressed as the retention rate before vulcanization. is there.

[0036] <Cord hardness>

JIS-L1096 8.2.1 Evaluation was made by the Gurley method of Method A (1999).

Attach a load of 25g at a position 5.08cm below the pendulum fulcrum of the Gurley Stephine Tester. Attach a specimen with a cord length of 3.81 cm to the chuck of the movable arm (with the chuck The test length between the free ends of the pendulum was 2.54 cm), the movable arm was operated, and the scale RG at the moment when the sample left the free end of the pendulum was used as the scale RG.

Cord hardness (mN) = RG X 2. 46Z cord gauge (cm)

[0037] <Curl>

The surface layer of the koji fabric after the dip treatment was pulled out, and the shape was observed with the tip freed to determine whether the koji was rounded.

[0038] (Example 1)

A polyethylene terephthalate chip with an intrinsic viscosity of 0.995 dl / g was melted and discharged from a spinneret with a hole diameter of 190 at a spinning temperature of 300 ° C, passed through a heating zone of 320 ° C, and then cooled by 20 ° C cooling air. It was cooled and solidified, taken up at a spinning speed of 550 m / min, and then drawn at a draw ratio of 5.8 times, and the epoxy compound sorbitol.polyglycidyl ether was added, and after 3.0% relaxation, it was scraped off. . The thus obtained 1100 dtex, 190 filament polyethylene terephthalate raw yarn (intrinsic viscosity 0 · 88 dl / g, strength 8 · 3 cN / dtex) was subjected to a twist in the cocoon direction at a twist number of 47 t / 10 cm. Two lower twisted yarns were twisted, and an upper twist of 47 t / 10 cm in the S direction was applied to obtain a polyester regular twisted double yarn cord. In addition, the polyethylene terephthalate yarn is subjected to a S twist in the S direction at a twist of 47 t / 10 cm, then two twisted twisted yarns in the Z direction and a twist in the Z direction at a twist of 47 t / 10 cm. I got a yarn cord.

The above-described normal and reverse twisted raw cords were alternately made into a total of 1,500 aligned warp yarns, and wefts were driven into the fabric at intervals of 5/5 cm to obtain a woven fabric (raw fabric).

Next, after immersing this knit fabric in the first treatment liquid, the excess liquid was removed with a vacuum, and then dried in an oven at 120 ° C for 56 seconds while giving a stretch rate of 4.0%. Subsequently, it was heat-treated in an oven at 235 ° C for 45 seconds.

Subsequently, after immersing the koji fabric treated with the above-mentioned first treatment liquid in the second treatment liquid, the excess liquid was removed by vacuum, and then a 120 ° C oven was applied while giving a relaxation rate of 0%. For 56 seconds and then heat treated in an oven at 235 ° C for 45 seconds.

Then, it was scraped off without performing mechanical softening treatment.

The composition of the first treatment liquid used in Example 1 is shown in Table 1, and the composition of the second treatment liquid is shown in Table 2. The

[0039] (Example 2)

In Example 1, the number of twists (Z direction) of the twisted twisted yarn cord is 35t / l0cm, the number of twisted yarns (S direction) is 47tZl0cm, the number of twisted twisted yarns (S direction) is 35tZl0cm, The number of twists (Z direction) was changed to 47tZl0cm. Other than that, weaving was performed in the same manner as in Example 1, and subsequently the same dipping treatment as in Example 1 was performed.

[0040] (Comparative Example 1)

In Example 1, weaving was performed only with a positive twisted twine cord with 47 t / 10 cm of the lower twist (Z direction) and 47 t / 10 cm of the upper twist (S direction), and then the same dipping treatment as in Example 1 I did.

[0041] (Comparative Example 2)

In Example 1, weaving was performed only with a positive twisted twine cord with 47 t / 10 cm of the lower twist (Z direction) and 47 t / 10 cm of the upper twist (S direction), and then the same dipping treatment as in Example 1 Furthermore, the softening treatment was continued under the conditions of a bending angle of 120 degrees and a tension of 0.1 lcN / dtex.

[0042] Table 3 shows the twist structure, dip conditions, and treated cord properties of the cords of Examples 1 and 2 and Comparative Examples 1 and 2.

As is apparent from Table 3, the woven fabric of the present invention has excellent heat-resistant adhesiveness, and curling is prevented even when the number of twists of the lower twist and the upper twist is unbalanced.

In Comparative Example 1, the raw cords are all twisted and severe curls are generated.

Comparative Example 2 is an example that satisfies the lower twist / upper twist ratio and mechanical softening treatment conditions described in Japanese Patent Application Laid-Open No. 2004-308043. As a result, the cord is hard (in the embodiment of Japanese Patent Application Laid-Open No. 2004-308043, the Gurley hardness is about 30 mN, and in this example, 112 mN), and curling cannot be prevented. Further, as compared with Examples 1 and 2 and Comparative Example 1, there is a disadvantage that the heat resistant adhesiveness is greatly lowered. The reason for this is considered to be that a part of the dip resin is scraped or a crack is generated in the resin due to rubbing with the edge blade in the softening treatment process. Treatment is not preferred. [0043] [Table 1]

Pharmaceutical A Nagase ChemteX Corp. Dena Pound

(Ammonia aqueous solution of chlorophenol and formalin resorcinol condensate: 20% solids) Pharmaceutical B Elastron BN-27, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.

(Polyurethane polymer blocker, solid content 30%, functional group number approx. 5)

[0044] [Table 2] Second treatment liquid of Example 1

Pharmaceutical B Erastron BN-27 manufactured by Daiichi Kogyo Seiyaku Co., Ltd.

Pharmaceutical C Nagase ChemteX Corp. Denacol EX-614

(Sorbitol 'polyglycidyl' ether)

Medicinal D Neocor P, Daiichi Kogyo Seiyaku Co., Ltd.

(Dialkylsulfoco / succinate soda salt solids 75%)

Pharmaceutical E Nippon A & L Co., Ltd. SNX- 7046

(Styrene 'butadiene / 2 vinyl pyridine copolymer solid content 41 W

Pharmaceutical F Nippon A & L Co., Ltd. J-9049

(Styrene / butadiene copolymer solid content 49%)

[0045] [Table 3] Example 1 Example 2 Comparative example 1 Comparative example 2 Number of twisted twisted cords (lower twisted Z upper twisted S) 10cm 47X47 35 47 47 47 47 47 Number of twisted twisted cords (lower twisted S upper twisted Z) t / 10cm 47X47 35X47-One warp alternate arrangement-Yes Yes No

Softening treatment during dip treatment 1 No No Yes Strong N 123 127 123 128 Strength cN / dtex 5.6 5.8 5.6 5.8 Intermediate elongation 3.5 3.2 3.5 3.4 Cutting elongation 12.1 12.0 12.2 12.5 Initial N / cm 122 125 121 125

H bonding

Overvulcanized N / cm 123 125 122 105

Normal temperature · Initial N / 25mm 226 229 221 208

Rubber coverage 100 100 100 100

I Room temperature / Over vulcanization N / 25mm 197 195 200 152 Rubber coverage 90 90 90 70

Hot, initial N / 25mm 130 128 127 104 Rubber coverage 100 100 100 85 Hot, overvulcanized N / 25mm 115 120 119 60 Rubber coverage 85 85 85 40 Deterioration strength retention in rubber 85 86 86 78 Code Hardness mN 157 152 157 112 Resin adhesion 6.6 6.5 6.7 5.5 Presence or absence of curling-No No Yes Yes Industrial applicability

The polyester woven fabric of the present invention has excellent heat-resistant adhesiveness with rubber and prevents the occurrence of curling in the adhesion treatment process. Therefore, it can be used for rubber reinforcement applications that require heat-resistant adhesiveness. It is possible to reduce the problems of lower workability in the post-process and the occurrence of product defects, and contribute greatly to the industry.

Claims

The scope of the claims

[1] A polyester regular twisted cord with a Z twist and then a S twist, and a polyester reverse twist cord with a S twist and then a Z twist. A silk fabric characterized by being alternately arranged as warps.

[2] A treatment liquid containing (A) a carrier as a treatment liquid in the knit fabric according to claim 1, (B) a block deisocyanate aqueous solution, (C) a dispersion of an epoxy compound, (D) resorcin formaldehyde latex (RFL) ) After combining the four of the mixed liquids and performing processing by multistage processing of one stage or two or more stages, and processing with the first processing liquid containing at least (A) a processing liquid containing a carrier, A woven fabric characterized in that at least (D) a dipping treatment is applied to provide adhesion to rubber to be treated with a second treatment liquid containing a resorcinol formaldehyde latex (RFL) mixture.

[3] A tire cap ply kite fabric using the kite fabric according to claim 1 or 2.