KR-102963295-B1 - METHOD FOR MANUFACTURING ARTIFICIAL TURF INFILL MATERIAL AND ARTIFICIAL TURF INFILL MATERIAL MANUFACTURED THEREBY

Abstract

The present invention relates to a method for manufacturing an artificial turf infill material and an artificial turf infill material manufactured by the same, characterized by a first material having a cylindrical shape with a certain length and penetrating ends, and a second material that is filled inside the first material and is different from the first material, and manufactured by double injection molding simultaneously with the first material and the second material, thereby enabling the production of a composite structure infill material manufactured by double injection molding of a fast-responding material and a slow-responding foamed material.

Inventors

• 이정열

Assignees

• 주식회사 유니스포텍

Dates

Publication Date

20260512

Application Date

20250624

Claims (7)

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5. It is characterized by being manufactured by simultaneously double-injecting a first material having a cylindrical shape with a fixed length and penetrating ends, and a second material that is filled inside the first material and is different from the first material. The first material is characterized by being fast-forming, and the second material is characterized by being a slow-forming foamed material. The above first material is, 60 to 75 parts by weight of polyurethane resin, 10 to 20 parts by weight of epoxy resin, 1 to 10 parts by weight of stabilizer and antioxidant, or 50 to 65 parts by weight of SBS or SEBS, 15 to 25 parts by weight of polypropylene, 10 to 20 parts by weight of paraffin oil, 1 to 3 parts by weight of stabilizer, or 60 to 75 parts by weight of low-density PE (LDPE), 10 to 20 parts by weight of EVA, 2 to 5 parts by weight of antioxidant and UV stabilizer, or 70 to 85 parts by weight of PP resin, 10 to 20 parts by weight of rubber powder or SBS, 1 to 5 parts by weight of binder aid and colorant, or 60 to 70 parts by weight of EVA resin, 15 to 25 parts by weight of rubber powder (SBR), 5 to 10 parts by weight of foaming aid and stabilizer, or 60 to 80 parts by weight of acrylic resin, 10 to 20 parts by weight of MMA copolymer, 2 to 5 parts by weight of stabilizer and UV blocker, or 70 to 85 parts by weight of silicone rubber, 10 to 20 parts by weight of white filler (SiO₂), 1 to 5 parts by weight of curing accelerator and stabilizer, or 60 to 80 parts by weight of polyvinyl chloride (PVC), stabilizer (Ca-Zn): 10 to 20 parts by weight, plasticizer (DOP, etc.): 5 to 15 parts by weight, or Epoxy resin: 50 to 65 parts by weight, curing agent (amine-based) 20 to 30 parts by weight, silica filler and stabilizer 5 to 10 parts by weight, or A method for manufacturing artificial turf infill material, characterized by being selectable from at least one or a combination of at least one of 40 to 50 parts by weight of a polyisocyanate-based resin, 40 to 50 parts by weight of a polyol-based resin, and 5 to 10 parts by weight of an accelerator and an antioxidant.
6. It is characterized by being manufactured by simultaneously double-injecting a first material having a cylindrical shape with a fixed length and penetrating ends, and a second material that is filled inside the first material and is different from the first material. The first material is characterized by being fast-forming, and the second material is characterized by being a slow-forming foamed material. The above second material is, Polyurethane prepolymer: 60 to 70 parts by weight, foaming agent: 10 to 20 parts by weight, crosslinking agent and stabilizer: 5 to 10 parts by weight, or 50 to 65 parts by weight of EVA resin, 10 to 15 parts by weight of foaming agent (Azodicarbonamide), 5 to 10 parts by weight of foaming regulator and lubricant, or 60 to 75 parts by weight of LDPE resin, 10 to 15 parts by weight of foaming agent, 5 to 10 parts by weight of crosslinking agent (DCP), or 50 to 60 parts by weight of EPDM/NBR rubber, 10 to 15 parts by weight of foaming agent, 10 to 20 parts by weight of filler and curing aid, or 60 to 70 parts by weight of TPU resin, 10 to 15 parts by weight of foaming agent, 5 to 10 parts by weight of softener and heat stabilizer, or 60 to 75 parts by weight of silicone rubber, 5 to 10 parts by weight of foaming accelerator, 10 to 15 parts by weight of curing agent and silica filler, or 70 to 80 parts by weight of PS resin, 10 to 15 parts by weight of foaming agent (pentane or butane), 5 to 10 parts by weight of stabilizer and crosslinking agent, or 50 to 60 parts by weight of natural cork powder, 30 to 40 parts by weight of bio PU binder, 5 to 10 parts by weight of defoamer and auxiliary agent, or 50 to 65 parts by weight of polyurea resin, 20 to 30 parts by weight of isocyanate-based reactant, 5 to 10 parts by weight of foaming agent and auxiliary agent, or A method for manufacturing artificial turf infill material, characterized by being selectable from at least one or a combination of at least one of 50 to 70 parts by weight of rubber chips (waste tires, etc.), 20 to 30 parts by weight of PU binder, and 5 to 10 parts by weight of foaming agent and stabilizer.
7. Artificial turf infill material manufactured by the method of either claim 5 or claim 6.

Description

Method for manufacturing artificial turf infill material and artificial turf infill material manufactured thereby The present invention relates to a method for manufacturing an artificial turf infill and an artificial turf infill manufactured by the same, and more specifically, to a method for manufacturing an artificial turf infill that enables the production of a composite structure infill manufactured by double injection molding of a fast-responding material and a slow-responding foamed material, and an artificial turf infill manufactured by the same. Artificial turf is used as a substitute for natural grass for various purposes, including sports facilities such as soccer fields, baseball fields, and golf courses, as well as for landscaping and interior decoration. In artificial turf systems, infill is filled between the grass fibers to provide cushioning, protect player safety, and play an important role in extending the lifespan of the artificial turf. Conventional artificial turf infill materials have mainly used natural materials such as sand, rubber chips, and cork, but these had the problem of becoming compressed or dispersed over time. To solve these problems, various fillers using synthetic materials are being developed. Registered Patent No. 10-1273892 (hereinafter referred to as prior art) discloses a method for manufacturing an infill material for artificial turf. The prior art presents a method for manufacturing a filler by extruding a single material with a thermoplastic elastomer as the main component. In addition, the prior art describes that fillers of various colors can be manufactured by adding a coloring agent. However, the prior art has the following problems. First, since it is composed of a single material, its shock absorption performance and elastic recovery are limited. Second, due to the extrusion molding method, the product shape is simple, and it is difficult to implement complex functions. Third, it is difficult to obtain a multi-layered shock-absorbing effect because the internal structure is uniform. Fourth, performance degradation may occur due to hardening or increased brittleness of the material during long-term use. Fifth, the simple manufacturing process limits the development of fillers with differentiated performance. Furthermore, most existing filler manufacturing methods consist of a single process, which limited the ability to create synergy by combining materials with different characteristics. In particular, there was a lack of technical solutions to simultaneously satisfy the conflicting requirements of shock absorption and elastic recovery. FIG. 1 is a conceptual perspective view illustrating the structure of a double injection nozzle used in a method for manufacturing artificial turf infill material according to one embodiment of the present invention. FIG. 2 is a conceptual perspective view illustrating the molding process of a filler injected from a double injection nozzle used in a method for manufacturing an artificial turf filler according to an embodiment of the present invention. FIG. 3 is a block diagram illustrating a method for manufacturing artificial turf infill according to an embodiment of the present invention. The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but will be implemented in various different forms. The embodiments described in this specification are provided to ensure that the disclosure of the invention is complete and to fully inform those skilled in the art of the scope of the invention. And the present invention is defined only by the scope of the claims. Accordingly, in some embodiments, well-known components, well-known operations, and well-known techniques are not specifically described to avoid the invention being interpreted ambiguously. Additionally, throughout the specification, the same reference numerals refer to the same components, and the terms used (mentioned) in this specification are for describing embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text, and components and operations referred to as 'comprising (or comprising)' do not exclude the presence or addition of one or more other components and operations. Unless otherwise defined, all terms used in this specification (including technical and scientific terms) may be used in a meaning that is commonly understood by those skilled in the art to which the present invention belongs. Also, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless otherwise defined. Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings