KR102302119B1 - Artificial turf structure with improved buffer power and pile thread uprightness and method for manufacturing the same - Google Patents

Abstract

The present invention relates to an artificial turf structure with improved buffering power and pile thread uprightness, and a manufacturing method thereof. The artificial turf structure comprises: a support bubble layer; a support pile unit composed of a support yarn and an upright yarn to be coupled to the support bubble layer; a buffering bubble layer connected to the support bubble layer; a buffering pile unit composed of a buffering yarn to be coupled to the buffering bubble layer; and a coupling unit connecting the support bubble layer and the buffering bubble layer. Therefore, the crimped support pile unit supports the turfed support bubble layer, so that buffering power of the artificial turf structure is increased. Therefore, the present invention can minimize use of a filling material such as silica sand and a rubber chip.

Description

Artificial turf structure with improved buffer power and pile thread uprightness and method for manufacturing the same

The present invention relates to an artificial turf structure with improved cushioning power and pile yarn uprightness and a method for manufacturing the same.

Artificial turf is one of the specially used landscaping materials. Since it was first manufactured in the United States, it has been mainly used in sports fields, and can be used in places such as indoor gardens where turf growth is not possible or outdoor areas facing the north side of high-rise buildings where sunlight is extremely limited. Such artificial turf always maintains green and is not restricted by environmental conditions, so it is easy to manage after construction. Although the initial construction cost of artificial turf stadiums with artificial turf is higher than that of general natural turf, preference is high for semi-permanent use, ease of maintenance, and an even surface suitable for exercise. In the case of artificial turf for sports, artificial turf was used as a means to absorb the player's shock and secure a series of appropriate performance, such as ball rolling properties, ball throwing properties, and the change in the speed of the ball after it bounces off the ground.

This artificial turf has been developed through several stages along with the needs of customers and the development of material technology. In particular, in the case of artificial turf for soccer fields, since 1990, the FIFA standard, a quality certification system for artificial turf called 'FIFA Quality Concept', was introduced, and the demand for standardized game performance increased. are being tried

Such an artificial turf structure consists of pile yarns and includes a plurality of pile parts depicting natural grass; a bubble layer in which the pile part is tufted; and a backing layer for fixing the pile portion so as not to depart from the bubble layer. In addition, fillers such as silica sand and rubber chips are installed in the constructed artificial turf structure to increase the uprightness of the pile yarn and provide cushioning to protect players.

These fillers are lost over the course of use and must be replenished periodically. In addition, artificial turf structures must be replaced as their lifespan expires after 7 to 8 years after construction. Prior to the demolition of the artificial turf structure, the installed filler had to be recovered.

Republic of Korea Patent Registration No. 10-1841424 (2018.03.19.) Republic of Korea Patent Publication No. 10-2019-0085227 (2019.07.18.)

The present invention provides a technology for improving the uprightness and buffering power of an upright yarn depicting natural grass of an artificial turf structure.

An artificial turf structure with improved cushioning power and pile yarn uprightness according to an embodiment of the present invention includes: a support cell layer; a support pile part consisting of a support yarn and an upright yarn coupled to the support bubble layer; a buffer bubble layer connected to the support bubble layer; a buffer pile portion consisting of a buffer yarn and coupled to the buffer bubble layer; and a coupling part connecting the support bubble layer and the buffer bubble layer.

The end of the support yarn and the upright yarn, and the end of the buffer yarn may face in opposite directions with respect to the coupling portion.

The support and the buffer yarn may have a crimp structure, a crimp rate of the support yarn may be 10% to 50%, and a crimp rate of the buffer yarn may be 20% to 60%.

The support and the upright yarn may be mixed and tufted to the support foam layer to form the pile part, and the mixing ratio of the support and the upright yarn may be 10 to 50:50 to 90 by weight (w/w%).

The support and the upright yarn may be any one selected from nylon, polyethylene (PE), polypropylene (PP), and a composite material in which nylon and polyethylene are mixed.

The coupling part may be arranged between the support bubble layer and the buffer bubble layer along an arrangement direction of the support pile part and the buffer pile part.

The coupling part may be an adhesive sprayed and cured on the support bubble layer and the buffer bubble layer.

The buffer bubble layer may be in contact with the ground, and the end of the buffer yarn may be in contact with the supporting bubble layer.

The coupling part may be a pin member that penetrates through the support bubble layer and the buffer bubble layer and is exposed to the outside of the buffer bubble layer and inserted into the ground.

An artificial turf structure manufacturing method with improved cushioning power and pile yarn uprightness according to an embodiment of the present invention includes: tufting upright yarn and crimped supporting yarn forming a support pile portion to a support cell layer; tufting the crimped buffer yarn forming the buffer pile part to the buffer bubble layer; and connecting the support bubble layer and the buffer bubble layer to each other. includes

The end of the upright yarn and the support yarn and the end of the buffer yarn may face in opposite directions with respect to the coupling portion for coupling the support foam layer and the buffer foam layer.

The connecting step may include: arranging an adhesive sheet between the support bubble layer and the buffer bubble layer along an arrangement direction of the support pile part and the buffer pile part; and pressing the supporting bubble layer and the buffer bubble layer in the direction of the adhesive sheet so that the supporting bubble layer and the buffer bubble layer are coupled by the adhesive sheet.

According to an embodiment of the present invention, since the crimped support yarn supports the upright yarn, the uprightness of the upright yarn is improved, and the cushioning power of the artificial turf structure is increased as the crimped buffer yarn supports the support cell layer in which the support pile part is tufted. . Accordingly, it is possible to minimize the use of fillers such as silica sand and rubber chips.

According to an embodiment of the present invention, the support bubble layer and the buffer bubble layer can absorb moisture, and the moisture can be evaporated to lower the surface temperature of the artificial turf structure. Accordingly, it is possible to prevent burns caused by frictional heat generated by sliding the player.

1 is a schematic view showing an artificial turf structure with improved cushioning power and pile yarn uprightness according to an embodiment of the present invention.
Figure 2 is an enlarged view of part A of Figure 1;
3 is a block diagram showing a method of manufacturing an artificial turf structure with improved cushioning power and pile yarn uprightness according to an embodiment of the present invention.
Figure 4 is a schematic view showing an artificial turf structure with improved cushioning power and pile yarn uprightness according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily carry out the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Throughout the specification, like reference numerals are assigned to similar parts.

Then, an artificial turf structure (hereinafter referred to as artificial turf structure (1)) having improved cushioning power and pile yarn uprightness according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2 .

1 is a schematic view showing an artificial turf structure with improved cushioning power and pile yarn uprightness according to an embodiment of the present invention, and FIG. 2 is an enlarged view of part A of FIG. 1 .

1 and 2 , the artificial turf structure 1 includes a support bubble layer 10 , a support pile part 20 , a buffer bubble layer 30 , a buffer pile part 40 and a coupling part 50 . It also increases the uprightness of the upright yarn depicting natural grass and improves the buffering power. When the artificial turf structure 1 is constructed on the ground, the buffer bubble layer 30 and the buffer pile part 40 face the ground.

The support cell layer 10 and the buffer cell layer 30 are formed in a net structure woven with weft and warp yarns, and are polyethylene (Polyethylene; PE), polyamide (PA), polypropylene (PP), and polyester. It may be made of polyester (PET) or the like. The polyester-based material may include any one selected from polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polyester ether, polyether ether ketone, and co-polyester.

In addition, the support cell layer 10 and the buffer cell layer 30 may be made of a composite fiber in which polyethylene and polyamide are mixed. In addition, the support foam layer 10 and the buffer foam layer 30 may be made of natural fibers, biomass fibers, or the like.

The support bubble layer 10 and the buffer bubble layer 30 may absorb moisture, and the moisture may be evaporated to lower the surface temperature of the artificial turf structure 1 . Accordingly, it is possible to prevent burns caused by frictional heat generated by sliding the player.

The support bubble layer 10 and the buffer bubble layer 30 are in contact with each other and are coupled to each other by a coupling part 50 . The coupling part 50 includes an adhesive sheet. The coupling part 50 is arranged in the first direction between the support bubble layer 10 and the buffer bubble layer 30 and is spaced apart from each other. Here, the first direction is the arrangement direction of the support pile part 20 and the buffer pile part 40 .

On the other hand, the coupling part 50 is formed with an interval in the first direction between the support bubble layer 10 and the buffer bubble layer 30 . The coupling part may be any one selected from a hot melt adhesive, an adhesive sheet, a natural rubber, a synthetic rubber adhesive, a urethane adhesive, and an acrylic adhesive. In addition, the bonding portion may include any one selected from a solution adhesive, an aqueous adhesive, an emulsion adhesive, a solvent-free adhesive, and a solid adhesive. The type of the coupling part 50 is not limited to the adhesive. It may be variously changed according to the design, construction environment, etc. of the artificial turf structure (1).

The support pile part 20 is tufted to the support bubble layer 10 and is coupled by heat sealing. The support pile portion 20 is tufted in the opposite direction of the buffer bubble layer 30 . The support pile unit 20 is exposed to the outside of the artificial turf structure 1 and may be stepped on by a player. The support pile part 20 has a flat surface and includes an upright yarn 22 depicting natural grass and a support yarn 21 supporting the upright yarn 22 .

The supporting yarn 21 and the upright yarn 22 are mixed, and the mixing ratio may be 10 to 50:50 to 90 by weight (w/w%). When the support yarn 21 is less than 10 and the upright yarn 22 is mixed in a ratio exceeding 90, the support force of the upright yarn 22 may be reduced due to the lack of the support yarn 21 .

The support yarn 21 and the upright yarn 22 may be made of any one selected from nylon, polyethylene (PE), polypropylene (PP), and a composite material in which nylon and polyethylene are mixed. The support yarn 21 and the upright yarn 22 may be made of the same material as the support bubble layer 10 . Accordingly, it is possible to recycle without separating the support yarn 21 and the upright yarn 22 from the artificial turf structure whose lifespan has passed.

Upright yarn 22 has a smooth surface. The support yarn 21 is crimped. The crimp rate of the support yarn 21 may be 10% to 50%. When the crimp rate of the supporting yarn 21 is less than 40%, the supporting force for supporting the upright yarn 22 may be reduced.

On the other hand, the length of the support yarn 21 is shorter than the length of the upright yarn 22 based on the surface of the support cell layer 10 , and the support yarn 21 supports the lower portion of the upright yarn 22 . Accordingly, the upright yarn 22 may be erected upright by the support yarn 21 . And the surface colors of the support yarn 21 and the upright yarn 22 are formed differently. The external aesthetics of the artificial turf structure 1 are improved by different colors.

The buffer pile part 40 is tufted to the buffer bubble layer 30 and is coupled in a heat-sealing manner. The length of the buffer yarn 41 based on the coupling portion 50 may be shorter than or equal to the length of the support yarn 21 . The material of the buffer yarn 41 is the same as the material of the support yarn 21 .

The buffer pile part 40 includes a crimped buffer yarn 41 . The crimp rate of the buffer yarn 41 may be 20% to 60% greater than the crimp rate of the support yarn 21 . Here, the end 41e of the buffer yarn 41 faces in opposite directions to the ends 21e and 22e of the support yarn 21 and the upright yarn 22 with respect to the coupling portion 50 . The buffer yarn 41 is in contact with the ground and absorbs the shock when the support pile part 20 is stepped on by a player to provide a buffering force.

When the artificial turf structure 1 is constructed on the ground, the buffer pile part 40 is in contact with the ground and the support pile part 20 is exposed. The buffer bubble layer 30 is separated from the ground by the buffer pile part 40 .

In addition, as the coupling part 50 is arranged in the first direction, the rainwater passes between the adjacent coupling parts 50 and passes through the artificial turf structure 1 and is drained to the ground. And by the crimp rate of the buffer yarn 41, numerous spaces are generated between the buffer bubble layer 30 and the ground, and between the adjacent buffer yarns 41. The space improves drainage of rainwater passing through the artificial turf structure (1).

The buffer pile unit 40 provides a buffer by absorbing the shock when the player steps on the artificial turf structure (1). The use of a buffer such as rubber chips can be minimized by the buffering power of the buffer pile part 40 . Accordingly, it is possible to prevent environmental pollution caused by the buffer.

Next, a method for manufacturing the artificial turf structure as described above will be described.

3, the manufacturing method of the artificial turf structure according to this embodiment includes the steps of tufting the support pile part to the support bubble layer (S10), tufting the buffer pile part to the buffer bubble layer (S20) and and connecting the support bubble layer and the buffer bubble layer (S30).

The crimped support yarn 21 and the straight upright yarn 22 wound on the bobbin arranged on the creel are supplied to the needle of the tufting device in a ratio of 10 to 50:50 to 90. The needle tufts the supporting yarn 21 and the upright yarn 22 to the supporting bubble layer 10 supplied (S10).

The crimped buffer yarn 41 wound on the bobbin disposed on the creel is supplied to the needle of the tufting device. The needle tufts the buffer yarn 41 to the buffer bubble layer 30 supplied (S20).

The support yarn 21 and the upright yarn 22 are tufted so that the ends 21e and 22e of the support yarn 21 and the upright yarn 22 and the ends 41e of the buffer yarn 41 face in opposite directions. The support bubble layer 10 and the buffer foam layer 30 tufted with the buffer yarn 41 are buttted to each other and connected to the coupling part 50 (S30).

When connecting the support bubble layer 10 and the buffer bubble layer 30, the adhesive sheet, which is the coupling part 50, is arranged between the support bubble layer 10 and the buffer bubble layer 30 in the first direction (S31) . Then, the support bubble layer 10 and the buffer bubble layer 30 are pressed in the direction of the adhesive sheet so that the supporting bubble layer 10 and the buffer bubble layer 30 are coupled by the adhesive sheet (S32). The support bubble layer 10 and the buffer bubble layer 30 may be pressed by passing between the pair of rollers.

However, the bonding portion made of an adhesive between the support bubble layer 10 and the buffer bubble layer 30 is sprayed at intervals in the first direction. And the support bubble layer 10 and the buffer bubble layer 30 are pressed by passing between the pair of rollers. The sprayed adhesive bonds the support bubble layer 10 and the buffer bubble layer 30 to each other while curing.

Another embodiment of the present invention has most of the components of the embodiment described with reference to FIGS. 1 to 2 . However, in this embodiment, the ends 21e and 22e of the support yarn 21 and the upright yarn 22 of the artificial turf structure 2 and the ends 41e of the buffer yarn 41 are in the same direction with respect to the ground. is heading

The support yarn 21 and the upright yarn 22 are tufted and coupled to the support cell layer 10 with a single needle. The buffer yarn 41 is tufted to the buffer bubble layer 30 and fusion-bonded. In addition, although not shown in the drawings, the upright yarn may be tufted together with the buffer yarn 41 in the buffer bubble layer 30 . However, the buffer yarn 41 may be omitted and only the upright yarn may be tufted.

The buffer bubble layer 30 is in contact with the ground. The support bubble layer 10 is placed on the buffer pile part 40 and is supported by the buffer pile part 40 . The buffer pile part 40 can provide a buffer by absorbing the shock when a player steps on the artificial turf structure 2 by supporting the support bubble layer 10 .

On the other hand, the buffer bubble layer 30 and the buffer pile unit 40 may be an artificial turf structure constructed in the stadium. Accordingly, it can be constructed by spreading the support bubble layer 10 to which the support pile part 20 is coupled on the artificial turf structure already constructed. By reusing the constructed artificial turf structure, the cost of disposing of the demolished artificial turf structure can be reduced.

The coupling part 50 according to the present embodiment includes a pin member. The coupling part 50 may be made of metal or plastic. Both ends of the coupling part 50 are bent in one direction. In a state in which the buffer bubble layer 30 to which the buffer pile part 40 is coupled and the support bubble layer 10 to which the support pile part 20 is coupled are laminated on the ballpark, both ends of the coupling part 50 are attached to the support bubble layer ( 10) and the buffer bubble layer 30 are penetrated and fixed to the ground. The buffer bubble layer 30 and the supporting bubble layer 10 stacked by the coupling part 50 are fixed to the ground of the stadium.

For other configurations, the configurations of the embodiments of FIGS. 1 and 2 may be applied as they are.

Although the preferred embodiment of the present invention has been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims are also provided. is within the scope of the

1, 2: artificial turf structure 10: support cell layer
20: support pile part 21: support thread
21e: end of support bar 22: upright yarn
22e: upright yarn end 30: buffer bubble layer
40: buffer pile part 41: buffer yarn
41e: buffer yarn end 50: coupling portion

Claims (11)

support cell layer,
A support pile part consisting of a support yarn and an upright yarn coupled to the support bubble layer;
a buffer bubble layer connected to the support bubble layer;
A buffer pile part made of crimped buffer yarn and coupled to the buffer bubble layer;
A coupling part made of an adhesive and connecting the support bubble layer and the buffer bubble layer
including,
The end of the support yarn and the upright yarn, and the end of the buffer yarn are in opposite directions with respect to the coupling part, and the end of the buffer yarn may be in contact with the ground, and the coupling part is the support bubble layer and the buffer bubble layer The support pile part and the buffer pile part are formed at intervals along the arrangement direction between
Artificial turf structure with improved cushioning power and pile yarn uprightness. delete In claim 1,
The support and the buffer yarn have a crimp structure, the crimp rate of the support yarn is 10% to 50%, and the crimp rate of the buffer yarn is 20% to 60%
Artificial turf structure with improved cushioning power and pile yarn uprightness. In claim 1,
The support and the upright yarn are mixed to form the pile part by being tufted in the support foam layer, and the mixing ratio of the support and the upright yarn is 10 to 50:50 to 90 in a weight ratio (w/w%)
Artificial turf structure with improved cushioning power and pile yarn uprightness. In claim 1,
The support and the upright yarn is any one selected from nylon (Nylon), polyethylene (PE), polypropylene (PP), and a composite material in which nylon and polyethylene are mixed.
Artificial turf structure with improved cushioning power and pile yarn uprightness. delete delete support cell layer,
A support pile part consisting of a support yarn and an upright yarn coupled to the support bubble layer;
a buffer bubble layer connected to the support bubble layer;
A buffer pile part made of crimped buffer yarn and coupled to the buffer bubble layer; and
A coupling part connecting the support bubble layer and the buffer bubble layer
including,
The buffer bubble layer may be in contact with the ground, and the end of the support and the upright yarn, and the end of the buffer yarn are oriented in the same direction with respect to the ground, so that the end of the buffer yarn is in contact with the supporting foam layer, and the The coupling part is a pin member that penetrates through the support bubble layer and the buffer bubble layer and is exposed to the outside of the buffer bubble layer and is inserted into the ground.
Artificial turf structure with improved cushioning power and pile yarn uprightness. delete delete delete

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