JP2018099776A - Bamboo fabric, tire ply material, tire and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tire manufacturing technique capable of more stably and uniformly opening a tire cord in a molded tire. SOLUTION: This is a method for manufacturing a wed woven fabric used for manufacturing a ply material for a tire, in which a dip processing step of applying a dip treatment to a tire cord and a tire cord having been subjected to the dip treatment are arranged as warp threads at predetermined intervals. A method for producing a woven fabric, which comprises a warp arranging step of arranging the warp threads and a sloping weaving process of driving weft threads that have not been subjected to a dip treatment into the arranged warp threads. A topping step of using the weeping fabric as a dip cloth and topping both sides of the dip cloth with topping rubber, and a tire ply material manufacturing process of manufacturing a tire ply material using the dip cloth topped with the topping rubber. A method for manufacturing a tire, which comprises a tire manufacturing process for manufacturing the tire using the ply material for the tire. [Selection diagram] None

Description

  The present invention relates to a weave fabric used as a dip fabric in the production of a tire ply material, a tire ply material in which the weave fabric is used as a dip fabric, a tire using the tire ply material, and production thereof. Regarding the method.

  In the manufacturing process of tires, tires are made by using a dip fabric produced by dip treatment of a weave fabric woven with warp yarns made of tire cords and thin wefts entangled with warp yarns at relatively coarse intervals. Manufacturing a ply material is performed (for example, patent documents 1 and 2).

  Specifically, after untopped rubber is topped on both sides of the dip counter to make a TOP counter, a weft yarn is cut together with the topping rubber at a predetermined pitch, thereby producing a tire ply raw fabric of a predetermined width. The Thereafter, the tire ply material is manufactured by cutting the tire ply original fabric in the width direction at a predetermined angle and width and joining the side surfaces together.

  Tires molded with this tire ply material, when the molded tire is inflated, the tire cord (warp) of the tire ply material opens uniformly in the radial direction, and exhibits a stable uniformity. Can do.

JP 2016-1112938 A JP 2004-142425 A

  It is an object of the present invention to provide a tire manufacturing technique that can provide a more stable uniformity tire by opening a tire cord more stably and uniformly in a molded tire.

The invention described in claim 1
A method of manufacturing a weave fabric used for manufacturing a ply material for a tire,
A dip treatment process to dip the tire cord;
A warp arranging step of arranging the tire cord subjected to the dip treatment as a warp at a predetermined interval;
A method for manufacturing a weave fabric, comprising: a weave weaving step in which weft yarn that has not been dip-treated is driven into the warp yarns arranged to interlace.

The invention described in claim 2
In the weave weaving step, a discontinuous weft is used as the weft, and the weft is driven into a tuck-in shape in which both ends are folded back and terminated. is there.

The invention according to claim 3
The yarn according to claim 1 or 2, wherein a yarn comprising one or more fibers selected from polyester fiber, aliphatic polyamide fiber, aramid fiber, and cellulose fiber is used as the warp yarn. It is a manufacturing method of textiles.

The invention according to claim 4
4. The method for producing a weave fabric according to claim 1, wherein the weft yarn is a yarn made of polyester fiber or a composite yarn in which the polyester fiber is coated with cotton yarn. .

The invention described in claim 5
The thickness of the warp yarn is any of the following, The method for producing a weave fabric according to any one of claims 1 to 4.
400-2200 dtex / 1
600-3600 dtex / 2
400-2200 dtex / 3

The invention described in claim 6
The thickness of the weft is 100 to 500 dtex / 1, The manufacturing method of the weave fabric according to any one of claims 1 to 5.

The invention described in claim 7
A topping process in which the weave fabric manufactured by the manufacturing method of the weave fabric according to any one of claims 1 to 6 is used as a dip counter and topping rubber is topped on both sides of the dip counter.
A tire ply original fabric producing step for producing a tire ply raw fabric having a predetermined width by cutting the dip fabric topped with the topping rubber at a predetermined pitch;
A tire ply material manufacturing step of manufacturing the tire ply material by jointing the side edges of the cut pieces after the manufactured tire ply original fabric is cut at a predetermined angle and length. It is a manufacturing method of the ply material for tires characterized by the above-mentioned.

The invention according to claim 8 provides:
A tire manufacturing method using the tire ply material manufactured by the tire ply material manufacturing method according to claim 7 as a tire rubber member.

The invention according to claim 9 is:
A weave fabric used as a dip counter in the manufacture of tire ply material,
With the tire cords arranged at a predetermined interval as warp yarns, the weft yarns are arranged at a sparser interval than the warp yarn intervals,
The warp yarn has been dipped,
The weft yarn is an interwoven fabric characterized in that a dip treatment is not performed.

The invention according to claim 10 is:
A tire ply material characterized in that a topping rubber is coated on both sides of the interwoven fabric according to claim 9.

The invention according to claim 11
A tire characterized in that the ply material for tire according to claim 10 is used.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the tire manufacturing technique which can make a tire cord open more stably and uniformly within a molded tire, and can provide a more stable uniformity tire.

It is a top view which shows the textile fabric which concerns on one embodiment of this invention. It is a figure which shows the mode of the weave fabric when it cuts from TOP reverse in one embodiment of this invention.

  Hereinafter, the present invention will be specifically described based on embodiments.

  FIG. 1 is a plan view showing a weave fabric according to the present embodiment. In FIG. 1, the weft is driven into a tuck-in shape, but the present invention is not limited to this. In FIG. 1, 1 is a braided fabric, 11 is a warp, 12 is a weft, and 13 is a tuck-in shape.

  As shown in FIG. 1, the interwoven fabric according to the present embodiment has tire cords arranged at a predetermined interval as warp yarns 11 and weft yarns 12 are arranged at an interval that is less than the interval between the warp yarns 11 as in the prior art. The warp fabric 1 is different from the conventional warp fabric in that the warp yarn 11 is dip-treated while the weft yarn 12 is not dip-treated.

  The warp yarns 11 are tire cords for reinforcing tires, and are arranged at predetermined intervals in the longitudinal direction of the interwoven fabric 1. As the dip liquid for dip treatment of the warp yarn 11, a dip liquid such as RFL (resorcin-formaldehyde condensate, rubber latex mixed liquid) is used. In addition, the density of the warp 11 is not particularly limited, but is usually about 30 to 70 pieces / 5 cm.

  On the other hand, the weft yarn 12 is not subjected to a dip treatment and is driven in the width direction of the weave fabric 1 at an interval that is less than the arrangement interval of the warp yarns 11 and is folded back at both ends in the width direction of the weave fabric 1. It has a tuck-in shape 13 that terminates.

  When the tire is molded using such a weave fabric 1 as a dip fabric, the weft yarn 12 which has not been subjected to the dip treatment is not bonded to the warp yarn 11 which has been subjected to the dip treatment. The opening of the warp yarn 11 in the tire inflation process is not hindered by the weft yarn 12 and can be opened stably and uniformly.

  In addition, since the dip processing is performed to the warp 11 with many numbers regarding the improvement of the adhesiveness with a rubber | gum requested | required by dip anti-friction and dimensional stability, it hardly falls compared with the past.

  In the present embodiment, the material of the warp 11 is preferably a fiber having a high tensile strength that is easily compatible with rubber from the viewpoint of reinforcing the tire. Specifically, an aliphatic polyamide fiber such as polyester fiber, nylon (registered trademark), an aramid fiber also called an aromatic polyamide fiber, and a cellulose fiber are preferable, and one or more of these are selected. It is preferable to use it.

  At this time, the thickness of the warp yarn 11 is 400 to 2200 dtex (400 to 2200 dtex / 1) for one twist, 600 to 3600 dtex (600 to 3600 dtex / 2) for two twists, and 400 to 2200 dtex (400 to 400 twists) for three twists. 2200 dtex / 3) is preferred. If the warp 11 is too thin, the tire may not be sufficiently reinforced. On the other hand, if it is too thick, tire cord marks may appear on the surface of the molded tire, leading to a decrease in uniformity.

  As the material of the weft 12, a composite yarn in which polyester or polyester is covered with cotton yarn is preferably used because the warp 11 is not scattered before the rubber topping and is easily cut after the rubber topping. It is done. And as thickness, it is preferable that it is 100-500 dtex / 1.

  The weaving of the weft into the warp may be a general plain weave or twill, but as shown in the present embodiment, the discontinuous weft is driven into a tuck-in shape with both ends folded back inside. Preferably it is. If wefts are driven into a tuck-in shape without being continuous in this way, even if an abnormality such as loosening or tightening occurs in a part of the weft, it does not affect other wefts. Disturbance does not occur.

  The above-mentioned tinning fabric is suitably used as a dip reaction when a tire ply material such as a carcass ply is manufactured. FIG. 2 is a diagram showing a state of a weave fabric when cut from the TOP side in the present embodiment. As shown in FIG. 2, the ply material for tire is manufactured by cutting the weft yarn 12 together with the topping rubber at a predetermined pitch along the warp yarn 11. In FIG. 2, the non-continuous portion of the weft 12 is the cutting position.

  In order to manufacture the tire ply material 2 specifically, first, the above-described brazing woven fabric according to the present embodiment is used as a dip fabric, and a TOP fabric is produced by topping unvulcanized rubber on both sides thereof. The rubber to be topped is appropriately determined according to the desired tire performance.

  After topping the unvulcanized rubber, the topping rubber and the weft 12 are cut at a predetermined pitch to produce a tire ply stock. Thereafter, the tire ply material is cut in the width direction at a predetermined angle and width, and the side surfaces of the cut material are joined together to produce a tire ply material. In addition, the cutting method of topping rubber and the weft 12 is not specifically limited, For example, the cutting jig | tool shown by Unexamined-Japanese-Patent No. 2004-142425, ie, 1 set of rollers in which the circumferential protrusion and the circumferential groove part were formed It is possible to use a cutting jig that cuts by cutting.

  The tire ply material 2 manufactured as described above is laminated with another rubber material such as an inner liner and tread rubber, and molded as a raw cover, and then inflated. At this time, since the warp yarn and the weft yarn are not bonded to each other as described above, the tire ply material 2 can open the warp yarn stably and uniformly during inflation. As a result, the occurrence of open cords and radial cracks in the product tire is suppressed, and a tire excellent in uniformity can be stably provided.

  Hereinafter, the present invention will be described based on examples. In the following, description will be made from the manufacture of the weave fabric to the manufacture of the tire.

1. Preparation of Dip Slip (1) Example An interwoven fabric was produced based on the specifications shown below, and used as a dip counter of the example.
Warp: PET (1670 dtex / 2) (Dip to RFL solution)
Ends: 50 / 5cm
Weft: Cotton (Cotton count 30s: 200dtex)
Number of weft threads: 4 / 5cm

(2) Comparative Example After using the warp yarn and the weft yarn not dipped in the RFL liquid to fabricate a weave fabric in the same manner as before, a dip treatment was performed to obtain a dip counterproduct of the comparative example.

2. Manufacture of tires Using the dip counters of the examples and comparative examples, topping rubber for ply of PCR tires was topped and processed into TOP counterstrips, then cut into ply widths of 740 mm and 700 mm, and tires for R245 / R17 A ply material was prepared.

  Next, 50 tires of size R245 / R17 were manufactured using the prepared tire ply material.

3. Evaluation Based on the uniformity measurement method of JASO C607, the manufactured tire measures RFV (radial force variation), which is a fluctuation component of force in the tire radial direction during tire rotation, and is a primary component of high-speed RFV. RH1 was calculated, and the average and standard deviation were obtained.

  The results are shown in Table 1.

  From Table 1, it can be seen that the tires of the examples have both lower RFV and RH1 and smaller standard deviation (variation) than the tires of the comparative examples. It was confirmed that excellent uniformity was stably exhibited as compared with the tire of the comparative example.

  While the present invention has been described based on the embodiments, the present invention is not limited to the above embodiments. Various modifications can be made to the above-described embodiments within the same and equivalent scope as the present invention.

1 Textile fabric 2 Tire ply material 11 Warp 12 Weft 13 Tuck-in shape

Claims (11)

A method of manufacturing a weave fabric used for manufacturing a ply material for a tire,
A dip treatment process to dip the tire cord;
A warp arranging step of arranging the tire cord subjected to the dip treatment as a warp at a predetermined interval;
A method for manufacturing a weave fabric, comprising: a weave weaving step in which weft yarn that has not been subjected to dip treatment is driven into the warp yarns that have been arranged to interweave.   2. The method for manufacturing a weave fabric according to claim 1, wherein, in the weaving step, a discontinuous weft is used as the weft, and the weft is driven into a tuck-in shape in which both ends are folded inward and terminated.   The yarn according to claim 1 or 2, wherein a yarn comprising one or more fibers selected from polyester fiber, aliphatic polyamide fiber, aramid fiber, and cellulose fiber is used as the warp yarn. A method for producing a woven fabric.   The method for producing a weave fabric according to any one of claims 1 to 3, wherein the weft yarn is a yarn made of polyester fiber or a composite yarn in which the polyester fiber is coated with cotton yarn. The method for producing a weave fabric according to any one of claims 1 to 4, wherein the warp yarn has one of the following thicknesses.
400-2200 dtex / 1
600-3600 dtex / 2
400-2200 dtex / 3   The method for producing a weave fabric according to any one of claims 1 to 5, wherein a thickness of the weft is 100 to 500 dtex / 1. A topping process in which the weave fabric manufactured by the manufacturing method of the weave fabric according to any one of claims 1 to 6 is used as a dip counter and topping rubber is topped on both sides of the dip counter.
A tire ply original fabric producing step for producing a tire ply raw fabric having a predetermined width by cutting the dip fabric topped with the topping rubber at a predetermined pitch;
A tire ply material manufacturing step of manufacturing the tire ply material by jointing the side edges of the cut pieces after the manufactured tire ply original fabric is cut at a predetermined angle and length. A method for producing a ply material for tires.   A tire manufacturing method using the tire ply material manufactured by the tire ply material manufacturing method according to claim 7 as a tire rubber member. A weave fabric used as a dip counter in the manufacture of tire ply material,
With the tire cords arranged at a predetermined interval as warp yarns, the weft yarns are arranged at a sparser interval than the warp yarn intervals,
The warp yarn has been dipped,
A weave fabric, wherein the weft is not dip-treated.   A tire ply material, characterized in that a topping rubber is coated on both sides of the interwoven fabric according to claim 9.   A tire comprising the tire ply material according to claim 10.

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