JP-2026514480-A - Manufacturing apparatus for double-sided yarn for artificial turf and double-sided yarn for artificial turf manufactured therefrom

Abstract

A manufacturing apparatus for double-sided yarn for artificial turf is provided. In one embodiment, the apparatus may include a first liquid supply pipe to which molten first liquid is supplied, a second liquid supply pipe arranged in a space physically separated from the first liquid supply pipe to which molten second liquid is supplied, and a junction where the first liquid that has flowed in through the first liquid supply pipe and the second liquid that has flowed in through the second liquid supply pipe merge.

Inventors

• イ ソンミン

Assignees

• ジーエスティージー カンパニー リミテッド

Dates

Publication Date

20260511

Application Date

20241213

Priority Date

20240326

Claims (6)

1. A first liquid supply pipe through which the molten first liquid is supplied, A second liquid supply pipe is located in a space physically separated from the first liquid supply pipe, and is supplied with molten second liquid. A manufacturing apparatus for double-sided yarn for artificial turf, comprising a confluence section where the first liquid flowing in through the first liquid supply pipe and the second liquid flowing in through the second liquid supply pipe merge.
2. A slit mold section is located at the lower part of the aforementioned confluence section. The apparatus for manufacturing double-sided yarn for artificial turf according to claim 1, wherein the first liquid and the second liquid flow into the slit mold section while flowing continuously, and double-sided yarn is formed in a manner in which they come into contact with each other within the slit mold section.
3. The aforementioned merging section includes multiple sections. The apparatus for manufacturing double-sided yarn for artificial turf according to claim 1, wherein a second liquid separation and discharge pipe is provided for separating and discharging the second liquid to a plurality of confluence sections before the second liquid supplied via the second liquid supply pipe flows into the confluence section.
4. A second liquid confluence pipe is further provided, extending to a predetermined length, so that the second liquid separated through the second liquid separation and discharge pipe flows horizontally. The apparatus for manufacturing double-sided yarn for artificial turf according to claim 3, wherein the end of the second liquid confluence pipe is connected to the confluence section.
5. A first liquid chamber is further provided, which has a first liquid chamber penetration pipe through which the first liquid passes, located above the aforementioned confluence. The apparatus for manufacturing double-sided yarn for artificial turf according to claim 4, wherein the second liquid confluence pipe extends from the lower part of the first liquid chamber.
6. Manufactured by a double-sided yarn manufacturing apparatus for artificial turf according to any one of claims 1 to 5, comprising a first surface formed by the first liquid and a second surface formed by the second liquid, (1) The first surface and the second surface have different hues, (2) The gloss of the first surface and the second surface are different, (3) The first surface and the second surface have different roughness, (4) The curvature of the first surface and the second surface differs depending on the intensity, wavelength, or temperature of the irradiated light, (5) A double-sided yarn for artificial turf, comprising any combination of (1) to (4) above.

Description

This invention relates to a manufacturing apparatus for double-sided yarn for artificial turf and the double-sided yarn for artificial turf manufactured thereby. An artificial turf system consists of an artificial turf pad, a shock-absorbing pad to support the artificial turf pad, and a filler material laid on the artificial turf pad, in order to replicate the effects of natural grass. Artificial turf, first developed in the United States to compensate for the various shortcomings of natural grass, has been primarily used in sports fields for ball games such as baseball, soccer, and golf. Artificial turf is becoming increasingly popular because it maintains its blue color regardless of the season, is not affected by environmental conditions such as climate, and is easy to install and maintain. While artificial turf has higher initial installation costs compared to natural grass, it is highly preferred due to its semi-permanent use, ease of maintenance, and the ability to maintain a consistent surface suitable for all types of sports. Artificial turf is manufactured artificially in the form of grass using synthetic fiber material. It is formed by embedding filaments in the shape of grass onto a base foam cushioning material. To prevent the grass-shaped filaments from separating from the foam cushioning material, an adhesive coating is applied to the underside of the foam cushioning material. In recent years, research and development have focused on creating artificial turf that offers a similar feel to natural grass while also being durable enough for long-term use. However, while nylon was primarily used as the raw material for early artificial turf, and nylon fibers are strong and abrasion-resistant, their surface friction was high, posing a risk of joint injuries and burns when they came into contact with the body. Attempts were made to overcome these problems by modifying the yarn composition, changing the molding method, and developing yarn manufacturing equipment, but it remained difficult to achieve the same physical properties and appearance as natural grass. Specifically, conventionally developed manufacturing equipment for artificial turf yarns has either difficulty incorporating the facilities necessary to produce yarns with two or more properties to achieve the same physical properties and appearance as natural grass, or the design has been such that the yarn can only exhibit two or more properties after manufacturing is complete. Alternatively, a structure has been applied in which yarn is formed from two or more raw materials, and the raw materials for two or more yarns are poured into spatially separated molds and then attached using separate tubes, resulting in a difficult structure where the bonding of the two or more raw materials is insufficient. This figure shows a manufacturing system for double-sided yarn for artificial turf according to one embodiment of the present invention.This diagram shows a manufacturing apparatus for double-sided yarn for artificial turf. Figure 3 shows the flow direction of the first and second liquids in Figure 2, Figure 4 shows a detailed view of the configuration where the first and second liquids merge, and Figure 5 shows a cross-sectional view of the x and z axes at position AA in Figure 4 to show a detailed view of the configuration where the first and second liquids merge.This figure shows the configuration of the slitting mold section according to each embodiment. The embodiments of the present invention will be described in detail below. However, the present invention is not limited to the embodiments disclosed below and can be realized in various forms. These embodiments are provided simply to complete the disclosure of the present invention and to make the contents of the invention more fully known to those in the ordinary skill. On the other hand, the double-sided filament described in this invention can be those with a monofilament strength of 150 denier to 2500 denier. On the other hand, the monofilament referred to in this invention may refer to a double-sided filament, and as an example, it may refer to a double-sided filament formed by the contact of the first liquid and the second liquid. The following will provide a detailed explanation with reference to the diagrams. The applicant of this invention aims to produce double-sided yarn for artificial turf that exhibits two or more physical properties, but also possesses physical properties and appearance similar to natural grass. To achieve this, the applicant made various design changes to the holding device and conducted numerous trials and errors, ultimately leading to the invention of this invention. Specifically, the applicant designed the device so that the first and second liquids, which are physically separated and flow in through different paths, merge at a confluence point, canceling out differences in hydraulic pressure and flow velocity. Afterward, the first and second liquids come i