Artificial Turf System for Park Golf

Abstract

The present invention relates to an artificial turf system for park golf with improved isotropic ball rolling performance, which provides uniform resistance regardless of the direction of impact through infrared blocking and a surface embossing structure for reducing ground temperature, heat dissipation through a C-shaped or omega (Ω)-shaped cross-sectional structure, and 1:1 synchronization of weaving spacing. Specifically, the artificial turf system for park golf comprises a turf yarn that dissipates heat by having an embossing groove formed on its surface and a C-shaped or omega (Ω)-shaped cross-sectional shape, and a turf yarn that penetrates and is planted, and a support layer coated on one side and a turf yarn, and a different type of filler formed of a plurality of particles with different particle shapes and sizes.

Description

Technology Field

[0001] The present invention relates to an artificial turf system for park golf, and more specifically, to an artificial turf system for park golf that reduces ground temperature by more than 10% compared to the existing one by inducing diffuse reflection of sunlight by mixing 1.0 to 1.5 parts by weight of titanium dioxide (TiO2) and an IR blocking agent with respect to 100 parts by weight of the total composition during yarn extrusion and forming fine embossing grooves (110) with a depth of 20 to 200 micrometers (㎛) on the surface, and simultaneously achieves isotropic ball rolling performance by eliminating resistance variation according to the direction of impact through square weaving in which the horizontal spacing and vertical spacing values ​​match in a 1:1 ratio, and maximizes walking stability by combining a C-shaped or omega (Ω)-shaped cross-sectional structure with a different type of filler (300), thereby preventing heat-related illnesses and falls among elderly users. Background Technology

[0003] In general, with the entry into an aging society, the park golf population—centered on the elderly—is rapidly increasing for health promotion and socializing, and accordingly, the construction of park golf courses is actively underway nationwide.

[0004] Furthermore, artificial turf is primarily installed to overcome the maintenance limitations of natural grass, and it is utilized as an essential infrastructure material that minimizes the impact of climate, provides a consistent playing environment throughout the four seasons, and enhances pedestrian convenience.

[0005] Beyond these basic functions, various advanced technologies have been developed over the years to improve the shape of artificial turf yarns or reinforce the underlying structure in order to enhance athletic performance and user safety. Representative examples include designing specific cross-sectional shapes to maintain the uprightness of the yarns, adding UV blockers to prevent discoloration and aging caused by ultraviolet rays, and laying infill materials such as rubber chips or silica sand to absorb impacts during games.

[0006] However, existing technologies adopted a design method that differentiated the horizontal (Gauge) and vertical (Stitch) spacing to maximize production efficiency. As a result, the artificial turf formed a rectangular arrangement on a flat surface, exposing a directional deviation problem where the resistance value of collisions with the yarn varied depending on the direction the ball rolled. This has been a persistent cause hindering the accuracy of shots and a fair playing environment.

[0007] Furthermore, the urban heat island effect occurs during the summer when the surface temperature of artificial turf rises rapidly under strong solar radiation conditions. However, existing temperature reduction technologies rely solely on the addition of UV blockers, which has fundamental limitations in effectively cooling actual ground radiant heat or blocking infrared rays to lower the perceived temperature for elderly users. This ultimately becomes a major cause of heat-related illnesses, such as heatstroke, among the elderly. Moreover, it has been continuously raised that for the elderly with reduced physical capabilities, there is a persistent risk of slipping or falls while walking due to yarn lying caused by the low friction coefficient and insufficient resilience of conventional yarns.

[0008] Such technical limitations not only degrade the quality of play in park golf but also threaten the lives and safety of the elderly, who are the primary users. Therefore, there is an urgent need for an innovative solution that can actively control ground temperature and ensure uniform performance in all directions.

[0009] Therefore, the present invention possesses very high industrial value in that it goes beyond the mere use of functional additives by combining a fine embossed yarn blended with titanium dioxide (TiO2) and an IR blocking agent with a 1:1 square weaving method, thereby drastically lowering ground temperature and perfectly realizing isotropic ball rolling performance. This aims to contribute to improving the quality of life in the aging society and establishing a sustainable sports environment by providing a comfortable and safe exercise environment for elderly users while ensuring precise directionality in park golf. Prior art literature

[0011] (Patent Document 0001) KR 10-2014-0086183 A (July 8, 2014) The problem to be solved

[0012] The present invention is devised to solve the above-mentioned problems, and its purpose is to provide an artificial turf system for park golf that can prevent falls by the elderly by adopting a functional material in which a yarn having a C-shaped or omega (Ω)-shaped cross-sectional structure is combined with titanium dioxide (TiO2) and an infrared (IR) blocking agent to secure a high-rigidity upright structure and durability of 500 to 2,000 DTEX, while also actively reducing ground temperature through surface fine embossing formation technology and a square weaving method that matches the horizontal and vertical planting spacing to 1:1, and by combining with a molded filler (300). means of solving the problem

[0014] The artificial turf system for park golf according to the present invention for achieving the above-mentioned purpose comprises: a turf yarn (100) having an embossed groove (110) formed on its surface and emitting heat by having a cross-sectional shape of C or Omega (Ω); and a support layer (200) through which the turf yarn (100) is planted and on which one side is coated. and a molded filler (300) that is filled between the grass yarns (100) and is formed of a plurality of particles having different particle shapes and sizes; wherein the grass yarns (100) have a fineness of 500 to 2,000 DTEX and are formed from a mixture comprising 94 to 98 parts by weight of polymer resin, 1.0 to 1.5 parts by weight of titanium dioxide (TiO2), and 1 to 5 parts by weight of infrared (IR) blocking agent per 100 parts by weight of the total composition to physically block solar heat absorption, and are composed of mono yarns (120) and crimp yarns (130) that are plied into 2 to 6 filaments, wherein the mono yarns (120) are formed to extend outward from the support layer (200), and the crimp yarns (130) are formed to have a wavy curvature at the bottom of the mono yarns (120), and the mono The yarn (120) is vertically supported to form uniform resistance, and the grass yarn (100) is planted in the support layer (200) to form a square arrangement with a 1:1 ratio of horizontal spacing (Gauge) and vertical spacing (Stitch), thereby eliminating directional deviations in which the resistance value colliding with the grass yarn (100) changes depending on the direction in which the ball rolls, so as to have uniform isotropic ball rolling performance regardless of the direction of impact.

[0015] delete

[0016] delete

[0017] In addition, the above grass yarn (100) is characterized by being extruded by kneading a mixture comprising 94 to 98 parts by weight of polymer resin, 1.0 to 1.5 parts by weight of titanium dioxide (TiO2), and 1 to 5 parts by weight of infrared (IR) blocking agent per 100 parts by weight of the total composition at a temperature range of 210°C to 240°C.

[0018] In addition, the above-mentioned grass yarn (100) is characterized by having C-shaped or omega (Ω) shaped embossing grooves (110) formed on its surface by a groove with a depth of 20 to 200 micrometers (μm) processed in a nozzle (420) to induce diffuse reflection of sunlight.

[0019] In addition, the above-mentioned grass yarn (100) is characterized by passing through a cooling tank (430) maintained at 20°C to 40°C immediately after passing through a nozzle (420) and being rapidly cooled so that a C-shaped or Omega (Ω)-shaped arch structure is fixed.

[0020] In addition, the above grass yarn (100) is characterized by being stretched at a stretching ratio of 4 to 6 times to ensure tensile strength.

[0021] Additionally, the support layer (200) is installed on the ground and is characterized by including a base (210) on which grass yarn (100) is planted, and a weaving groove (220) formed on the base (210) and designed to be one of a 3 / 8 inch gauge, a 5 / 16 inch gauge, or a 3 / 16 inch gauge through which the grass yarn (100) passes.

[0022] delete

[0023] In addition, the above-described shape filler (300) forms a shear bonding force with the embossing groove (110) on the outer surface of the grass yarn (100) and induces a wedge effect in which the filler particles interlock within the structure of the grass yarn (100), thereby controlling the ground friction force and preventing slipping and falling accidents during walking. Effects of the invention

[0025] The present invention can prevent heat-related illnesses in the elderly by reducing the ground temperature by more than 10% through a composite cooling mechanism of titanium dioxide (TiO2), an infrared blocking agent, an embossing structure, and C-type / omega-type channels.

[0026] The present invention can create a precise and fair playing environment by providing uniform electrical resistance regardless of the direction of impact through a square weaving method in which the spacing between the horizontal and vertical directions is matched in a 1:1 ratio.

[0027] The present invention can stably support elderly users by maintaining uprightness even under repetitive walking loads through high-rigidity yarn of 500 to 2,000 DTEX and an arch-shaped design.

[0028] The present invention can fundamentally prevent slipping by the elderly by optimizing ground friction force through inducing a wedge effect between the embossed irregularities on the surface of the yarn and the release filler.

[0029] The present invention eliminates the glare characteristic of artificial turf through a matte surface treatment using embossing, thereby reducing visual fatigue for elderly users with impaired vision and increasing concentration during the game. Brief explanation of the drawing

[0031] FIG. 1 is a perspective view of an artificial turf system for park golf according to one embodiment of the present invention. FIG. 2 is an exemplary diagram showing an embossing groove according to one embodiment of the present invention. FIGS. 3 and 4 are cross-sectional views showing a grass yarn according to an embodiment of the present invention. FIG. 5 is an exemplary diagram showing a mono yarn and a crimp yarn according to one embodiment of the present invention. FIG. 6 is an exemplary diagram showing the process of manufacturing grass yarn by a manufacturing device according to one embodiment of the present invention. FIG. 7 is an exemplary diagram of a support layer according to one embodiment of the present invention. Specific details for implementing the invention

[0032] Embodiments of the present invention will be described in detail below with reference to the attached drawings. However, the present invention is not limited to these embodiments and can be modified in various forms.

[0033] In the drawings, parts unrelated to the description have been omitted to clearly and concisely explain the present invention, and the same reference numerals are used for identical or extremely similar parts throughout the specification. Additionally, in the drawings, thicknesses, widths, etc., are depicted enlarged or reduced to make the description clearer; however, the thicknesses, widths, etc., of the present invention are not limited to those depicted in the drawings.

[0034] And when any part of the specification is described as "including" another part, unless specifically stated otherwise, it does not exclude other parts and may include additional parts.

[0036] Hereinafter, an artificial turf system for park golf will be described in detail with reference to the attached drawings.

[0038] FIG. 1 is a perspective view of an artificial turf system for park golf according to one embodiment of the present invention.

[0039] As illustrated in FIG. 1, the artificial turf system for park golf according to one embodiment of the present invention improves isotropic ball rolling performance by providing uniform resistance regardless of the direction of impact through infrared blocking and ground temperature reduction technology through a surface embossing structure, heat dissipation through a C-shaped or omega (Ω)-shaped cross-sectional structure, and 1:1 synchronization of weaving spacing.

[0040] An artificial turf system for park golf such as this has embossed grooves (110) formed on its surface and has a C-shaped or omega (Ω)-shaped cross-sectional shape, thereby emitting heat. It is planted through a support layer (200) that is coated on one side and a different type of filler (300) formed between the grass yarn (100) and the support layer (200) that is coated on one side, and the filler (300) is formed from a plurality of particles with different particle shapes and sizes.

[0041] The grass yarn (100) has a heat dissipation function and a high-rigidity upright structure to improve safety and performance for elderly users.

[0042] Conventional artificial turf has a problem of causing heat-related illnesses in the elderly by inducing a heat island effect in which the surface temperature rises rapidly under strong solar radiation conditions during the summer. However, the turf yarn (100) of the present invention physically blocks solar heat absorption by mixing 1.0 to 1.5 parts by weight of titanium dioxide (TiO2) and an infrared (IR) blocking agent with respect to 100 parts by weight of the total composition from the raw material mixing stage. At this time, if the content of titanium dioxide (TiO2) is less than 1.0%, the infrared blocking efficiency decreases, resulting in a negligible effect on reducing the ground temperature, and if it exceeds 1.5%, the flexibility of the yarn decreases, which may cause damage.

[0043] In addition to these functional materials, fine embossing grooves (110) with a depth of 20 to 200 micrometers (μm) are formed on the surface of the grass yarn (100) as shown in FIG. 2 to induce diffuse reflection of sunlight, which eliminates the glare characteristic of artificial grass and reduces visual fatigue of the user, resulting in a matte characteristic.

[0044] In particular, with reference to FIGS. 3 and 4, the cross-section of the grass yarn (100) is precisely molded into a C-shaped or omega (Ω)-shaped arch structure to form an open heat exhaust passage between the yarns, thereby increasing convective cooling efficiency and reducing the surface temperature in summer by more than 10% compared to the existing one.

[0045] Referring to FIG. 5, the turf yarn (100) is formed as a double structure combining mono yarn (120) and crimp yarn (130) to achieve support and isotropic performance optimized for the characteristics of park golf games. At this time, the mono yarn (120) extending outward from the support layer is woven into 2 to 6 filaments and formed to a height of 20 to 55 mm. This is intended to provide stable support to elderly users by maintaining a high-rigidity upright structure even under repeated walking loads. Furthermore, if the pile height is less than 20 mm, the shock absorption capacity is insufficient, resulting in a high risk of injury in case of a fall, and if it exceeds 55 mm, the yarn flattens out, causing the rolling resistance to become inconsistent.

[0046] A crimp yarn (130) having a constant wave pattern is positioned below the mono yarn (120) to support the mono yarn (120) so that it faces vertically, thereby supporting isotropic ball rolling performance that provides uniform resistance even to minute changes in the direction of the ball.

[0047] In addition, the grass yarn (100) maintains a fineness of 500 to 2,000 DTEX to maximize the second moment of area, thereby ensuring durability so that the yarn does not lie down and remains upright even under walking load.

[0048] Here, if the fineness is less than 500 DTEX, the stiffness of the grass yarn (100) is insufficient, so it wears out easily or its uprightness is reduced, and if it exceeds 2,000 DTEX, the yarn becomes excessively stiff, which can result in poor walking comfort. Also, the grass yarn (100) leads to a wedge effect that strengthens the shear bonding force between the embossing groove (110) on the surface and the release filler (300), thereby optimizing ground friction and preventing slipping and falling accidents for elderly users.

[0049] Referring to FIG. 6, such a grass yarn (100) is manufactured in a manufacturing device (400) through steps ranging from mixing raw materials to precise extrusion and stretching. The manufacturing device (400) is formed with an extruder (410) that mixes and extrudes a polymer resin, a nozzle (420) located at the tip of the extruder (410) that forms an embossing groove (110), a cooling tank (430) that rapidly cools the formed grass yarn (100) to fix a C-shaped or omega-shaped arch structure, and a stretching device (440) that fixes embossing irregularities on the surface of the cooled grass yarn (100).

[0050] Specifically, the extruder (410) kneads and extrudes a mixture based on 94 to 98 parts by weight of a polymer resin for every 100 parts by weight of the total composition, and 1.0 to 1.5 parts by weight of titanium dioxide (TiO2), a functional additive for reducing ground temperature, and 1 to 5 parts by weight of an infrared (IR) blocking agent.

[0051] At this time, the raw materials of the grass yarn (100) are mixed in a precisely controlled temperature range of 210°C to 240°C inside the extruder (410) to obtain uniform physical properties. If the extrusion temperature is set to less than 210°C, the viscosity of the resin becomes excessively high, and the formation of embossing by fine grooves becomes incomplete when passing through the nozzle (420) in the subsequent process. Conversely, if it exceeds 240°C, the C-shaped or Omega (Ω) shaped arch structure, which is the core structure of the present invention, collapses due to excessive thermal deformation of the resin, making it impossible to form a heat discharge passage.

[0052] And the nozzle (420) located at the tip of the extruder (410) has a fine groove with a depth of 20 to 200 micrometers (μm) precisely machined to form a physical embossing groove (110) on the surface of the grass yarn (100).

[0053] The embossing structure formed by these embossing grooves (110) induces diffuse reflection of sunlight to lower the ground temperature and prevents glare for elderly users with weakened eyesight through a matte finish that removes the characteristic glossiness of artificial turf, thereby alleviating visual fatigue even during long games.

[0054] Then, the high-temperature grass yarn (100), having a C-shaped or omega (Ω)-shaped cross-sectional structure and embossed irregularities after passing through the nozzle (420), immediately passes through a cooling water tank (430) maintained at 20°C to 40°C and undergoes a rapid cooling process, thereby firmly fixing the complex arch-shaped cross-sectional structure without deformation.

[0055] In addition, the cooled grass yarn (100) is stretched at a constant rate of 4 to 6 times in a stretching machine (440), thereby securing strong tensile strength capable of withstanding the repetitive walking load of a park golf course, while at the same time the embossed irregularities on the surface are fixed so that it can be used for a long period of time.

[0056] Here, if the elongation ratio of the grass yarn (100) is less than 4 times, the yarn is not stretched sufficiently, so the physical properties are degraded, and in particular, there is a problem that it has an irregular effect on the rolling of the ball, or is sensitive to ultraviolet rays and temperature changes, and the wear and whitening phenomenon is accelerated. If the elongation ratio of the grass yarn (100) exceeds 6 times, the flexibility of the yarn that has already been excessively stretched is reduced, so the grass yarn (100) planted in the planted support layer (200) may break upon external impact or bending, and there is a problem that fatigue failure is accelerated. Therefore, it should be understood that it is desirable for the cooled grass yarn (100) to be stretched uniformly at an elongation ratio of 4 to 6 times in the stretching machine (440).

[0057] Referring to FIG. 7, the support layer (200) consists of a foam sheet (210) through which grass yarn (100) is planted and a coating layer formed on one side to prevent the yarn from coming off and to ensure structural integrity.

[0058] Conventional artificial turf typically adopts an asymmetrical weaving method in which the horizontal spacing (Gauge) and vertical spacing (Stitch) are designed differently to increase production efficiency, resulting in a rectangular arrangement on a flat surface. This structure causes a chronic directional deviation that impairs the accuracy of the shot, as the physical resistance value of the collision with the yarn varies depending on the direction in which the ball rolls.

[0059] On the other hand, the support layer (200) of the present invention is composed of a base sheet (210) installed on the ground and includes a weaving groove (220) formed by the turf yarn (100) penetrating during the tufting process. At this time, the turf yarn (100) is tufted using 3 / 8 inch gauge, 5 / 16 inch gauge, and 3 / 16 inch gauge to provide performance optimized for the game characteristics of each area of ​​the park golf course.

[0060] Here, each inch gauge specification used when planting turf yarn (100) in the foam sheet (210) is a value for forming a dense planting structure required for a park golf course, and by synchronizing the stitch density with the corresponding inch gauge value, drainage efficiency is increased and retention capacity is maximized to prevent the loss of filler material between the yarns.

[0061] In the present invention, the support layer (200) is implemented so that the artificial turf forms a square arrangement on a plane by matching the horizontal spacing (Gauge) and vertical spacing (Stitch) of the planted turf yarn (100) to the same 1:1 ratio. Accordingly, the support layer (200) is arranged at a 1:1 interval to maintain uniform resistance received by the ball when it comes into contact with the yarn regardless of the direction of impact, thereby providing isotropic ball rolling performance that maintains the same electrical resistance regardless of the direction of putting. This contributes to reducing technical deviations and creating a fair playing environment in park golf games where elderly users make up the majority, and can improve the quality of the game by fundamentally eliminating errors caused by directional deviations during putting, where fine directional control determines the outcome of the game.

[0062] The precise design of such a support layer (200) is combined with high-rigidity grass yarn (100) of 500 to 2,000 DTEX fineness so that the grass yarn (100) does not collapse under repeated walking loads and maintains its uprightness, thereby improving walking stability and durability for elderly users.

[0063] Referring to FIG. 3, the heterogeneous filler is filled between the grass yarns (100) to improve walking safety for elderly users and control the physical properties of the ground. At this time, the heterogeneous filler (300) is composed of multiple particles with different particle shapes and sizes, and interacts with the fine embossing grooves (110) formed on the outer surface of the grass yarns (100) with a depth of 20 to 200 micrometers (μm) to form a shear bonding force.

[0064] And the coarse particles of the different diameters of the different types of filler (300) are physically embedded between the embossing irregularities on the surface of the grass yarn (100) or induce dense filling between the particles, which causes a wedge effect in which the filler particles are firmly interlocked in the grass yarn formed by the mono yarn (120) and crimp yarn (130) combined into 2 to 6 filaments.

[0065] This wedge effect not only prevents the loss of the filling material by resisting the horizontal shear force generated when a user steps on the ground and moves, but also functions as a safety device that fundamentally prevents fall accidents by optimizing ground friction, thereby preventing elderly users with reduced physical ability from slipping while walking. In particular, the physical combination of the crimp yarn (130) that vertically supports the mono yarn (120) from the bottom and the shaped filling material (300) maintains the uprightness of the yarn even under repetitive walking loads, thereby preserving the cushioning performance of the ground, and effectively disperses the impact applied to the body during a fall, thereby preventing injury.

[0067] Although an artificial turf system for park golf according to one embodiment of the present invention has been described above, the concept of the present invention is not limited to the embodiments presented in this specification. Furthermore, those skilled in the art who understand the concept of the present invention may easily propose other embodiments within the scope of the same concept by adding, changing, deleting, or adding components, and such are also to be considered to fall within the scope of the concept of the present invention. Explanation of the symbols

[0069] 100: Grass yarn 110: Embossed groove 120: Mono yarn 130: Climb yarn 200: Support base 210: Air bubble wrap 220: Staff Home 300: Irregular filler 400: Manufacturing device 410: Extruder 420: Nozzle 430: Cooling tank 440: Continuous device

Claims

Claim 1 In an artificial turf system for park golf, a turf yarn (100) that emits heat by having an embossed groove (110) formed on its surface and a cross-sectional shape of C or Omega (Ω); and a support layer (200) through which the turf yarn (100) is planted and on which one side is coated. and a molded filler (300) that is filled between the grass yarns (100) and is formed of a plurality of particles having different particle shapes and sizes; wherein the grass yarns (100) have a fineness of 500 to 2,000 DTEX and are formed from a mixture comprising 94 to 98 parts by weight of polymer resin, 1.0 to 1.5 parts by weight of titanium dioxide (TiO2), and 1 to 5 parts by weight of infrared (IR) blocking agent per 100 parts by weight of the total composition to physically block solar heat absorption, and are composed of mono yarns (120) and crimp yarns (130) that are plied into 2 to 6 filaments, wherein the mono yarns (120) are formed to extend outward from the support layer (200), and the crimp yarns (130) are formed to have a wavy curvature at the bottom of the mono yarns (120), and the mono An artificial turf system for park golf characterized by having uniform isotropic ball rolling performance regardless of the direction of impact, wherein the turf yarn (120) is vertically supported to form uniform resistance, and the turf yarn (100) is planted in the support layer (200) to form a square arrangement with a 1:1 ratio of the horizontal spacing (Gauge) and vertical spacing (Stitch), thereby eliminating directional deviations in which the resistance value colliding with the turf yarn (100) changes depending on the direction in which the ball rolls. Claim 2 delete Claim 3 delete Claim 4 An artificial turf system for park golf according to claim 1, wherein the turf yarn (100) is characterized by being extruded by kneading a mixture comprising 94 to 98 parts by weight of polymer resin, 1.0 to 1.5 parts by weight of titanium dioxide (TiO2), and 1 to 5 parts by weight of infrared (IR) blocking agent per 100 parts by weight of the total composition at a temperature range of 210°C to 240°C. Claim 5 In claim 4, the artificial turf system for park golf is characterized in that the above-mentioned turf yarn (100) has C-shaped or omega (Ω) shaped embossing grooves (110) formed on its surface by a groove with a depth of 20 to 200 micrometers (μm) processed by a nozzle (420) to induce diffuse reflection of sunlight. Claim 6 An artificial turf system for park golf according to claim 4, wherein the above-mentioned turf yarn (100) is rapidly cooled by passing through a cooling tank (430) maintained at 20°C to 40°C immediately after passing through a nozzle (420), thereby fixing a C-shaped or Omega (Ω)-shaped arch structure. Claim 7 In claim 4, the above-mentioned grass yarn (100) is stretched at a stretching ratio of 4 to 6 times to ensure tensile strength, characterized in that it is an artificial turf system for park golf. Claim 8 An artificial turf system for park golf according to claim 1, wherein the support layer (200) comprises: a base sheet (210) installed on the ground and serving as a foundation for planting grass yarn (100); and a weaving groove (220) formed in the base sheet (210) and designed to be one selected from 3 / 8 inch gauge, 5 / 16 inch gauge, and 3 / 16 inch gauge through which grass yarn (100) penetrates. Claim 9 delete Claim 10 An artificial turf system for park golf according to claim 1, wherein the shaped filler (300) forms a shear bonding force with the embossing groove (110) on the outer surface of the turf yarn (100) and induces a wedge effect in which the filler particles interlock within the structure of the turf yarn (100) to control ground friction, thereby preventing slipping and falling accidents during walking.

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