WO2011102619A2

WO2011102619A2 - Assembly type flooring for playing fields and method for manufacturing same

Info

Publication number: WO2011102619A2
Application number: PCT/KR2011/000917
Authority: WO
Inventors: 엄기석; 윤종구
Original assignee: 주식회사 필드테크
Priority date: 2010-02-17
Filing date: 2011-02-11
Publication date: 2011-08-25
Also published as: WO2011102619A3; KR100975984B1

Abstract

The present invention relates to assembly type flooring for playing fields and to a method for manufacturing the same. It is an object of the present invention to provide assembly type flooring for playing fields, in which design characteristics, shock absorbing performance and surface friction characteristics are improved, and provide a method for manufacturing the flooring. For this, the assembly type flooring for playing fields, comprises: a flat plate-shaped base frame which has a plurality of water drain holes and mounting grooves formed between the water drain holes; protrusions protruded from a lower portion of the base frame and formed integrally with the base frame; and a shock absorbing unit which is made of a soft resin material having a hardness less than the hardness of the base frame, and which is coupled into the mounting groove of the base frame.

Description

Prefabricated playground flooring and its manufacturing method

The present invention relates to a prefabricated playground flooring material and a method for manufacturing the same, which is formed on the floor of an indoor or outdoor floor by applying a double injection method to form and manufacture a base frame and an impact absorbing part using two materials, thereby absorbing shock and securing a road. Prefabricated playground flooring designing a stylish design by contrasting the colors of the two materials and a method of manufacturing the same.

Prefabricated playground flooring by plastic injection began development and mass production for the first time in the United States in the late 1970s and was used as a replacement for the existing hard court.

These prefabricated playground flooring materials are available in a variety of colors and designs, and the appearance of excellent sunscreens or antioxidants not only gives excellent weather resistance to plastic products, but also designes the surface to be drainable so that the outdoor coat All weather coats are made of water and the water is not accumulated. It is possible to select and use the sliding characteristics according to the movement characteristics through various designs of the surface shape.

Therefore, playground flooring is improved in product characteristics, and is applied to not only a playground flooring but also a walking trail, a roof of a building, a veranda, a toilet, a parking lot, a garage, a warehouse, a bicycle road, and the like.

It is important to note that these existing products are injection molded with a single resin in a single color, so that the color or pattern of the base is a monotonous base. It can only express by the structure design of the injection molding, but it absorbs shock by the structural design of the injection molding, but it is far below the DIN18032 Part II, which is the impact absorption standard of the playground or the court flooring. The product is produced by adjusting the degree of slippage with a linear protrusion.

Existing prefabricated playground flooring is based on solid color lines, and the surface is formed with geometric patterns as a base, and the design of the coat is inevitable using prefabricated characteristics, and 100% polypropylene (PP) resin is used as a raw material. Because I use it, I cannot avoid a hard feeling. To this end, the existing prefabricated playground flooring material is made of PP resin itself, so that the polyethylene (PE) can be properly mixed to give sliding characteristics, but the dot pattern on the surface in consideration of the characteristics of each sport type It is also possible to control the sliding characteristics by regularly placing, embossing diagonal lines on the linear surface structure, or adjusting the angle of the lines.

In addition, these injection products, which are used as flooring materials of existing sports grounds, are very poor in terms of shock absorption ability, which is one of the characteristics required as flooring materials. It is equivalent to 6-20%, which is much lower than the 53% specified in the relevant standard DIN 18032 Part II.

In addition, the existing floor of the prefabricated playground floor has all the products with a mesh structure, so there is no problem of drainage, but it is not easy to remove it when infiltrating foreign objects, and there is anxiety that the stud or high heels heel attached to the bottom of the shoes are caught when walking or exercising. If you fall down during exercise, you may get injured if your skin is pushed into the concave part by weight. Depending on the angles of dots, slanted lines, and linear corner angles introduced on the surface for non-slip purposes, it may also result in scratches during sports or walking. In order to solve these problems, it is difficult to find an appropriate point simply by adjusting the structure or irregularities on the surface of the linear network structure.

The technical problem of the present invention is to provide a prefabricated playground flooring with improved design characteristics, shock absorption function and surface friction characteristics and a method of manufacturing the same.

Another object of the present invention is not easy to remove the foreign matter in the network structure of a single polypropylene material, studs or high heels heeling during walking or exercise and injuries due to concave areas when falling during sports Providing a prefabricated playground flooring material in which a substantial part of the surface of the linear network structure is formed into a plate-like structure so as to solve the problem of abrasions caused by dots or diagonals and linear edge angular powder formed on the surface, and a method of manufacturing the same. There is.

It is another object of the present invention to provide a prefabricated playground flooring material and a method of manufacturing the same, which are stable and can be improved by covering the surface of the plate structure with a flexible material which is elastic and not slippery.

Still another object of the present invention is to provide a prefabricated playground flooring material and a method of manufacturing the same, which can provide a floor having various colors by applying a double injection method using two materials.

Prefabricated playground flooring material of the present invention for achieving the above technical problem is a plate-shaped base frame is formed with a plurality of seating holes and a plurality of seating grooves formed between the drainage holes; A plurality of protrusions protruding from a lower portion of the base frame and integrally formed with the base frame; And a soft resin material having a hardness less than that of the base frame, and is formed by applying a double injection method to the seating groove of the base frame in a molten state in a molten state. Shock absorbing unit; Characterized in that it is formed to include.

In this case, the base frame may be formed of a polypropylene resin having an ethylene content of 18% to 25%, and the shock absorbing part may be formed of a resin having a Shore A hardness of 50 to 70.

In addition, the shock absorbing portion may be formed of a resin material or a thermoplastic elastomer (TPE) material including metallocene (metallocene) in polypropylene or polyproethylene.

In addition, the impact absorbing portion may be formed with a plurality of minute uneven portion on the surface.

In addition, the impact absorbing portion may be formed by mixing at least one of a fluorescent pigment and a photoluminescent pigment.

On the other hand, the method of manufacturing a prefabricated playground flooring material of the present invention for achieving the above technical problem is formed of a plurality of drainage holes and the plate-shaped base frame formed with a plurality of seating grooves of the plate-shaped structure between the drainage holes primary mold A base frame injection molding step placed in a mold and manufactured by an injection molding method; And a shock absorbing part molding step of inserting the base frame into a secondary mold to apply injection molding method so that the shock absorbing part is filled in the seating groove. Characterized in that it is formed to include.

In this case, the base frame in the injection molding step of the base frame is formed of a polypropylene resin having an ethylene content of 18% to 25%, and in the impact absorbing part molding step, the shock absorbing part is formed of polypropylene or polyproethylene into a metal. It may be formed of a resin material containing a metal (Metallocene) or a thermoplastic elastomer (TPE) material.

In addition, by applying a corrosion method to the surface of the mold in the impact absorbing part molding step it may be to form a plurality of fine irregularities on the surface of the impact absorbing portion.

In this case, injection molding may be performed by mixing at least one of a fluorescent pigment and a photoluminescent pigment in the impact absorbing part molding step.

The present invention can be formed in the plate-like structure of the surface of the prefabricated playground flooring is not a network structure of the predominant network structure, so as not to interfere with the drainage, improve the elasticity and friction characteristics and stability of the prefabricated playground, and in terms of design and color There is an effect that allows you to design a prefabricated playground flooring in a significantly improved form.

In addition, the present invention has the effect of significantly improving the shock absorption capacity by forming a shock absorbing portion in the base frame of the prefabricated playground flooring.

In addition, the present invention is because the base frame and the shock absorbing part of the prefabricated playground flooring is formed by the overmoulding method, which is a double injection method, so that the design characteristics of the plate-like structure and the structural characteristics regarding the coupling of the base frame and the shock absorbing part is maintained in large quantities. Mass production is possible.

In addition, the present invention has the effect of improving the sliding characteristics by forming irregularities on the surface of the shock absorbing portion of the prefabricated playground flooring.

In addition, the present invention has the effect of diluting a small amount of pigment in the shock absorbing portion to exhibit a visible visual characteristics at night or day in the state that the manufacturing cost is not significantly increased.

1 is an exploded perspective view of a prefabricated playground flooring material according to an embodiment of the present invention.

Figure 2 is a perspective view of the assembled prefabricated playground flooring state shown in FIG.

Figure 3 is a perspective view from the bottom of the prefabricated playground flooring shown in FIG.

Figure 4a, Figure 4b is a plan view of the prefabricated playground flooring composed of two colors.

＊ Description of symbols for main parts of the drawings ＊

10; Base frame

20; spin

30; Shock Absorber

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, the components constituting the prefabricated playground flooring according to an embodiment of the present invention, the coupling relationship between the components, and the role of the components will be described.

1 is an exploded perspective view of a prefabricated playground flooring material according to an embodiment of the present invention. Figure 2 is a perspective view of the assembled prefabricated playground flooring state shown in FIG. Figure 3 is a perspective view of the prefabricated playground flooring material shown in Figure 2 viewed from the bottom.

As shown in Figure 1 to Figure 3, prefabricated playground flooring according to an embodiment of the present invention is formed including a base frame 10, the projection 20, and the shock absorbing portion (30).

The base frame 10 is formed in a flat frame shape. The base frame 10 is installed indoors or outdoors, and is used as a platform for people. When people use the base frame 10 as a scaffold, the base frame 10 absorbs the impact by bending itself by the force applied by the foot.

In this case, the base frame 10 is formed with a plurality of drainage holes 11.

Here, the plurality of drainage holes 11 are formed in a shape in which a plurality of slits are spaced apart from each other, and serves to allow water or foreign matter to pass through the base frame 10.

In addition, the base frame 10 is formed with a plurality of mounting grooves 12, in this case, the mounting groove 12 is formed between the drain holes 11 so as not to overlap with the drain holes (11). The seating groove 12 is formed in a rectangular groove shape and serves to provide a space in which the shock absorbing unit 30 is seated.

Here, the plurality of seating grooves 12 may be further formed with a straight connection groove 13 connecting each other, and the shock absorbing portion 30 may be seated and coupled to the connection groove 13.

In addition, the base frame 10 may be further formed with an annular ring portion for connecting a plurality of base frames on the side.

The protrusion 20 protrudes into a plurality of lower portions of the base frame 10 and is integrally formed with the base frame 10. Here, the protrusion 20 may have a length of between 1 mm and 1.5 mm in length. These protrusions 20 are installed in contact with the floor of the indoor or outdoor. In this case, the shock transmitted from the base frame 10 to the protrusion 20 serves to absorb the impact by bending the protrusion 20.

Here, the base frame 10 and the protrusion 20 are formed of the same resin material, and integrally formed by injection molding.

The shock absorbing portion 30 is hardened as the material of the seating groove 12 is bonded and cooled in a molten state by a double injection method to the seating groove 12 of the base frame 10 to be cured. do.

In other words, after the base frame 10 is molded by the primary mold by the double injection method, the base frame 10 is placed in the secondary mold and the same as the material of the seating groove 12 is molten. The shock absorbing unit 30 is melted and cooled in a molten state.

Therefore, since the base frame 10 and the shock absorbing unit 30 are combined and attached in a molten state, the base frame 10 and the shock absorbing unit 30 are not only vertically impacted but also horizontally applied by the sliding force of the object. The shock absorbing part 30 may absorb the shock without being separated.

Here, the shock absorbing portion 30 is formed in a rectangular flat plate shape to be seated in the seating groove 12. In addition, the shock absorbing portion 30 is formed to further include a connecting portion 31 to be filled in the connecting groove 13 of the base frame 10.

The shock absorbing part 30 is formed by an overmoulding method, which is a double injection method using a soft resin material, to form an elastic surface of the plate-like structure on the base frame 10 to absorb the applied shock. do.

In this case, the base frame 10 is preferably formed of a polypropylene resin material having an ethylene content of 18% to 25%, the shock absorbing portion 30 is formed of a lower hardness than the base frame 10 It is preferable. This is because the base frame 10 is formed of a rigid polypropylene resin material to have a hard (Hash) characteristics, so as to support the weight applied from the human foot, the shock absorbing portion 30 is the base frame It is formed to be lower than the hardness of (10) to better absorb the impact applied from the human foot.

Here, the base frame 10 is formed of a polypropylene resin having an ethylene content of 18% to 25%, because the base frame 10 contains both toughness and flexibility even at low temperatures to improve weight bearing ability and shock absorption ability. to be. In this case, when the ethylene content of the base frame 10 is less than 18%, the ability to support the weight may be improved, but the lack of flexibility may reduce the shock absorption to less than the standard specification, the ethylene content of the base frame 10 If it is formed larger than 25% of the shock absorbing amount can be increased, but the weight bearing capacity is weak, the durability can be significantly reduced. For reference, polypropylene (PP) or polyethylene (PE), which is an olefin resin, is known as a very stable and environmentally friendly material because it can be recycled over several times and does not contain harmful substances. In addition, the base frame 10 may be manufactured by containing Talc to reduce shrinkage and expansion as is widely known.

In this case, the shock absorbing portion 30 is preferably formed of a resin material of Shore A hardness of 50 to 70. The reason for this is that if the base frame 10 is bent by an impact in a state in which the shock absorbing unit 30 is coupled with the base frame 10, the base frame 10 is bent together with the base frame 10 to thereby maximize the amount of shock absorption. Because it is. If the shock absorbing part 30 is formed to have a Shore A hardness of less than 50, the material becomes too soft. Therefore, the shock absorbing part 30 does not absorb shock due to its own off. As a result, the shock absorbing amount against the bending of the base frame 10 is remarkably decreased. On the other hand, when the shock absorbing portion 30 is formed larger than Shore A hardness 70, when the shock absorbing portion 30 is too hard (Hash) material to interlock with the bending of the base frame 10, the shock absorbing portion ( 30 may be prevented from exerting the shock absorbing amount similar to the shock absorbing amount when the base frame 10 is separated from the base frame 10 or is composed of the base frame 10 alone.

In addition, the shock absorbing portion 30 is preferably formed of a resin material or a thermoplastic elastomer (TPE) material containing metallocene (Metallocene) in polypropylene or polypropylene. The reason for this is to improve the bonding force between the shock absorbing portion 30 and the base frame 10, and to improve weather resistance and wear resistance. Here, the shock absorbing unit 30 can be used using a resin such as EVA, PE-LD, TPR, PP Metallocene, PE-Metallocene, TPE-V, TPE-S in consideration of the adhesive force with the base frame 10 However, among these, a resin or a thermoplastic elastomer (TPE) including metallocene in polypropylene or polyproethylene, which is a resin capable of producing elasticity of Shore A hardness of about 50 to 70, is very preferable.

In this case, the shock absorbing unit 30 may be mixed with at least one of a coloring pigment, a photoluminescent pigment, and a fluorescent pigment to form a visually prominent color at night and day. Therefore, the shock absorbing unit 30 implements a more beautiful color and design than the conventional prefabricated flooring exercisers and improves stability by securing a walking path at night. In this case, since the pigment diluted in the shock absorbing part 30 is mixed in the shock absorbing part 30 having a volume which is significantly smaller than the total volume of the base frame 10, the pigment may have a visual effect with a small amount of pigment. Manufacturing costs can also be reduced.

In addition, the shock absorbing portion 30 may be formed by protrusions (not shown) of minute protrusions on the upper surface. These irregularities will improve the sliding characteristics by improving the friction with the shoes.

Hereinafter, a method of manufacturing a prefabricated playground flooring material according to an embodiment of the present invention will be described.

In the method of manufacturing a prefabricated playground flooring material according to an embodiment of the present invention, a base frame injection molding step using a primary mold by applying a double injection method, and an impact absorbing part for injection molding the molded base frame by a secondary mold It is formed including a molding step.

The base frame injection molding step is a step of manufacturing the above-described base frame 10 by the injection molding method. The injection molding step of the base frame 10 is formed of a structure and a material as described above by the primary mold.

In the shock absorbing part molding step, the double injection molding method is applied to the base frame 10 again into a second mold frame (not shown), and the shock absorbing part 30 described above in the seating groove 12 and the connection groove 13 is applied. ) Is the step of injection molding to form. Then, the shock absorbing portion 30 of the structure and material as described above is formed.

In this case, in the molding of the shock absorbing part 30, the above-mentioned concave-convex part for etching may be formed inside the mold surface to improve sliding characteristics.

As described above, the prefabricated playground flooring material and the method of manufacturing the same according to an embodiment of the present invention are not formed in a line-based network structure, but are formed in a plate-like structure that has no problem in drainage, so that elasticity, friction characteristics, and stability are improved. It is improved and is formed in a shape that is significantly improved from the conventional in terms of design and color.

In particular, the prefabricated playground flooring material and the method of manufacturing the same according to an embodiment of the present invention is to form a shock absorbing portion 30 in the base frame 10 to significantly improve the shock absorbing capacity than conventional.

In addition, the prefabricated playground flooring material and the method of manufacturing the same according to an embodiment of the present invention, since the base frame 10 and the shock absorbing portion 30 are formed in an overmolding method, which is a double injection method, the base frame 10 The shock absorbing part 30 is formed to have a different color, respectively, so that two color effects can be obtained as shown in FIGS. 4A and 4B, and each color is contrasted to design a fashionable coat. Mass production is possible while maintaining the characteristics and structural characteristics.

The present invention has the effect of improving the elasticity and friction characteristics and stability of the prefabricated playground and significantly improving the shock absorption capacity than the prior art.

In addition, the present invention has the effect of mass production in terms of the structure, by forming irregularities on the surface of the shock absorbing portion of the prefabricated playground flooring, there is an effect of improving the sliding characteristics.

In addition, the present invention by diluting a small amount of the pigment in the shock absorbing portion greatly reduces the manufacturing cost, there is an effect of exhibiting the visible visual characteristics at night or day.

Claims

A flat base frame having a plurality of drainage holes and having a plurality of seating grooves having a plate-like structure formed therebetween;

A plurality of protrusions protruding from a lower portion of the base frame and integrally formed with the base frame; And

It is formed of a soft resin material having a hardness less than the hardness of the base frame, the impact is formed by combining in the same molten state in the molten state of the seating groove material in the seating groove of the base frame by applying a double injection method Absorption part; Prefabricated playground flooring characterized in that it is formed, including.
The method of claim 1,

The base frame is formed of a polypropylene resin material having an ethylene content of 18% to 25%,

The shock absorbing portion is a prefabricated playground flooring, characterized in that formed of a resin material of Shore A hardness of 50 to 70.
The method of claim 2,

The impact absorbing part is prefabricated playground flooring, characterized in that formed of a resin material or a thermoplastic elastomer (TPE) material containing metallocene (Metallocene) in polypropylene or polyproethylene.
The method of claim 1,

Prefabricated playground flooring material, characterized in that the shock absorbing portion is formed with a plurality of fine irregularities on the surface.
The method of claim 1,

Prefabricated playground flooring is characterized in that the impact absorbing unit is formed by mixing at least one of a fluorescent pigment and a photoluminescent pigment.
A base frame injection molding step of forming a plurality of drain holes and inserting a plate-shaped base frame having a plurality of seating grooves having a plate-shaped structure between the drain holes in a primary mold frame and manufacturing the same by an injection molding method; And

A shock absorbing part molding step of inserting the base frame into a secondary mold to apply a double injection method to injection molding the shock absorbing part to be filled in the seating groove; Prefabricated playground flooring manufacturing method characterized in that it is formed, including.
The method of claim 6,

The base frame in the base frame injection molding step is formed of a polypropylene resin having an ethylene content of 18% to 25%,

Method of manufacturing a prefabricated playground flooring material, characterized in that in the molding of the shock absorbing unit the impact absorbing unit is formed of a resin material or a thermoplastic elastomer (TPE) material containing metallocene (Metallocene) in polypropylene or polypropylene.
The method of claim 6,

The method of manufacturing a prefabricated playground flooring material, characterized in that to apply a corrosion method to the surface of the mold in the impact absorbing part molding step to form a plurality of fine irregularities on the surface of the impact absorbing part.
The method of claim 6,

Method of manufacturing a prefabricated playground flooring material characterized in that the injection molding by mixing at least one of the fluorescent pigment and the photoluminescent pigment in the impact absorbing part molding step.