KR100495564B1 - Pneumatic tire with net in tread groove - Google Patents

Abstract

The present invention relates to a pneumatic tire, and more particularly, to a pneumatic tire having a net layer formed on the tread groove formed by forming a net layer on the tread groove of the tire to improve braking force on snowy roads, ice sheets or wet roads.

The present invention has the advantages of four-season pneumatic tires to form a net layer that can improve the braking force in the grooves of the pneumatic tire tread portion to improve the braking force on the snow road, ice or wet road surface in winter To provide a tire.

Description

Pneumatic tire with net in tread groove

The present invention relates to a pneumatic tire, and more particularly, to a pneumatic tire having a net layer formed on the tread groove formed by forming a net layer on the tread groove of the tire to improve braking force on snowy roads, ice sheets or wet roads.

In general, the pneumatic tire has a tire pattern groove of the tire as shown in FIG. 1, so that the tires may have noise, wear, steering stability, driving performance on wet roads, and snow. It satisfies various important performances such as running performance. In order to satisfy the performance on the snow among these various performances, by adjusting the number of grooves and sipes on the tire tread part or by using a rubber composition that can improve the driving performance on the snow compared to general season tires. By manufacturing snow tires and using these snow tires on snow roads or on ice, skids can be prevented from running to improve performance on snow roads or on ice.

However, by forming a large number of grooves and sipes in the tre part of the tire, it is possible to improve traction in snow or ice. However, if the amount of sipes in the tire tread is too large, other performances of the tire, such as wear performance and durability, There is a difficulty in increasing the amount of sipe indefinitely because it is drastically dropped. In addition, snow tires can be used wherever there is always snow or ice, but there are four seasons as in Korea, especially where there is little snow, the usefulness is reduced compared to the four season tires.

The present invention can improve the braking force on the snow road, ice or wet road as described above, and also can improve the braking force in the groove of the pneumatic tire while studying the development of a tire having usefulness such as the four season tires. Forming a net layer so that the net layer protrudes to a predetermined length from the ground plane of the tire can improve braking force on snowy roads, ice sheets or wet roads in winter, and wears the net layer through the winter. The present invention has been completed by knowing that it can provide a pneumatic tire for four seasons.

Therefore, the present invention has the advantages of pneumatic tires for the four seasons to form a net layer that can improve the braking force in the grooves of the pneumatic tire tread portion to improve the braking force on snowy roads, ice or wet road surface in winter It is aimed at the provision of mouth tires.

The present invention is a pneumatic tire characterized in that, in the known pneumatic tire as shown in Fig. 2, a net layer 4 is formed in the groove portion 2 of the tire tread portion 1.

In FIG. 2, reference numeral 3 denotes a sipe.

The material of the net layer formed on the tire groove in the above can be used as long as the net layer attached to the tire can improve the braking force on snowy roads, ice roads or wet roads. It is better to use any one selected from steel, polyester fiber, nylon, aramid fiber with advantages.

In the present invention, the net layer that can improve the braking force on the snow road, ice road or wet road surface is inserted into the groove part of the tire tread portion to a predetermined depth to promote the stability of the net layer, snow road, ice road or wet road surface during winter It is better to protrude from the tire ground plane to the length that the net layer can wear out. In general, it is necessary to protrude 1 to 2 mm from the tire ground plane and to insert 1-2 mm into the groove. It is preferable in terms of stability of the net layer.

Meanwhile, in the present invention, the diameter of one of the net layers formed on the groove is 0.1 to 1.2 mm, and the net layer structure is preferably such that 2 to 20 nets are arranged with respect to the length of the net layer 1 cm. If the diameter of one layer of the net layer is less than 0.1mm, there is a problem that the durability of the net layer is lowered, the durability is lowered, if it exceeds 1.2mm there is a problem in limiting the adhesion and braking characteristics in winter, in the net layer structure, If the number of nets is less than 2 for 1cm length, the braking force is reduced, and if the number of nets exceeds 20, there is a problem of slipping by the net layer. In the present invention, the diameter of one strand of the net layer is 0.1 to 1.2 mm, and the net layer The structure is preferably such that 2 to 20 meshes are arranged with respect to 1 cm of the mesh layer.

Meanwhile, in the present invention, the net layer inside the groove of the pneumatic tire may be manufactured by attaching the net layer after primary vulcanization and then attaching the rubber layer again.

Hereinafter, the present invention will be described through the following examples and test examples. However, these do not limit the technical scope of the present invention.

<Example 1>

As shown in FIG. 2, a polyaramide fiber netting layer 4 is inserted into the tread part 1 of the known pneumatic tire 2, and the netting layer is formed on the groove by protruding 2 mm above the tire ground plane. Pneumatic tires were prepared. The diameter of one strand of this netting layer was 0.5 mm, and it arranged so that 10 aramid fibers orthogonally crossed with respect to 1 cm in length in a netting layer.

<Example 2>

The same method as in Example 1 was used except that polyester fibers were used as the net layer, and the diameter of one strand of the net layer was 0.7 mm, and 15 polyester fibers were orthogonal to the length of 1 cm in the net layer. The pneumatic tire in which the net layer was formed in the tread part groove part of a pneumatic tire was produced.

<Example 3>

Using a nylon fiber as the net layer, the diameter of one strand of the net layer is 1.0mm, using the same method as in Example 1 except for arranging 18 nylon fibers orthogonal to a length of 1 cm in the net layer The pneumatic tire in which the net layer was formed in the tread part groove part of a pneumatic tire was manufactured.

<Test Example>

The braking force on snowy roads, ice sheets and wet roads was measured by ASTM standard method using pneumatic tires and net pneumatic tires having a net layer formed in the tread portion grooves from the first to third examples. It is summarized in Table 1 below.

Table 1. Braking Force Results of Examples and Comparative Examples

Item Control Example 1 Example 2 Example 3 Snow Brake Performance 100 122 134 139 Ice braking performance 100 111 115 121 Wet Road Braking Performance 100 113 118 123

* The braking performance of each example on snow, ice and wet surfaces shows the relative measurement results when the control value is 100.

From the results of the test example, it can be seen that the pneumatic tire having a net layer formed in the trough portion of the tread portion as in the present invention improves braking force on snowy roads, ice roads, or wet roads as compared to conventional tires.

In particular, when the pneumatic tire of the present invention is mainly used in winter, when the net layer in the groove is worn out while driving the car during the winter season, when the weather improves, the net layer in the groove wears out to provide a general pneumatic tire. It can be effective.

1 is a plan view of a conventional pneumatic tire.

2 is a plan view of a pneumatic tire of the present invention.

* Description of the symbols for the main parts of the drawings *

        1: tread 2: groove

        3: sipe 4: mesh layer

Claims (5)

In pneumatic tires, A pneumatic tire, characterized in that the net layer is formed by protruding 1 to 2 mm above the tire ground surface and inserted into the groove by 1 to 2 mm. The pneumatic tire having a net layer formed on a tread groove according to claim 1, wherein the net layer material is any one selected from steel, polyester fiber, nylon, and aramid fiber. delete 2. The pneumatic tire having a net layer formed on the tread groove according to claim 1, wherein the diameter of one strand of the net layer is 0.1 to 1.2 mm. The pneumatic tire according to claim 1, wherein the net layer structure has a net layer formed on the tread groove, wherein the number of nets is 2 to 20 with respect to a length of 1 cm.