KR100975984B1 - Assemble type of field flooring and fabricating method the same - Google Patents

Abstract

PURPOSE: A bottom material for a prefabricated playground and a manufacturing method thereof are provided to remarkably improve stability and impact absorbing properties by forming an impact absorbing unit in a base frame. CONSTITUTION: A bottom material for a prefabricated playground comprises a base frame(10), protrusions(20), and an impact absorbing part(30). The base frame is formed in a plate-frame shape and has multiple drain holes(11) and mounting grooves(12). The protrusions are protruded from the bottom of the base frame. The impact absorbing part is coupled to the mounting grooves of the base frame.

Description

Field of the Invention [0001] The present invention relates to a flooring material,

The present invention relates to a prefabricated playground floor material and a method of manufacturing the same, and is a floor material installed on the floor of an indoor or outdoor environment. The base frame and the impact absorbing portion are formed and formed into two materials by applying a double injection method, And a method of manufacturing the same. 2. Description of the Related Art

The plastic flooring of prefabricated playground flooring began to be developed for the first time in the United States in the late 1970s and has been used as a substitute for conventional hard court.

These prefabricated playground floors can be used for a variety of colors and designs. With the advent of superior performance UV protectors and antioxidants, they can give excellent weatherability to plastic products, It is made all-weather coat so that water does not float, and slip characteristics can be selected and used according to the movement characteristics through various design of surface shape.

Therefore, the flooring material of the playground has been improved not only for the use as a flooring material for the playground but also for a walking walkway, a building roof, a veranda, a restroom, a parking lot, a garage, a warehouse, and a bicycle road.

Here, it should be pointed out that these existing products are injection molded products of one kind of resin in a single color, so that the color or pattern is made as a simple base, so that the design of the coat is made using the assembly characteristics, , But the impact absorption is achieved by the structural design of the injection molding. However, it is lower than the shock absorbing standard DIN 18032 Part II of the playground or the coating material of the floor. The slip characteristic is also defined by the acute angle of the line on the injection molding surface, Adjust the slipperiness with a linear protrusion to make the product.

Existing flooring materials for prefabricated playgrounds are based on monochromatic lines and have a surface based on geometric patterns as bases and can only be used for coat design by using the prefabricated characteristics. In addition, 100% polypropylene (PP) Because it is used as a hard feeling can not be avoided. For this purpose, the existing prefabricated playground flooring is made of polyethylene resin (PE) so that it can give a sliding characteristic by appropriately mixing the polyethylene resin (PE) due to the hash characteristic of the PP resin itself. However, Or to control the sliding characteristics by embossing the oblique lines or adjusting the angle of the lines in the linear surface structure.

In addition, these injection products, which are used as the floor material of the existing sports ground, are very poor in terms of shock absorbing ability, which is one of the required characteristics as a floor material. This is equivalent to 6 to 20%, which is well below the 53% specified in the related standard DIN 18032 Part II.

In addition, the existing prefabricated playground flooring has no problem in drainage because the whole surface of the product is made of a network structure, but it is not easy to remove it when it is infiltrated with foreign substances. There is also a phenomenon that when the skin is pushed into the concave part when the weight falls on the concave part when it falls down during the sporting event, it may cause injury. Depending on the angles of the angles of the edges of the dots, slanted lines and linearly introduced on the surface for the purpose of non-slip, it can also cause abrasions during athletic competition or walking. In order to solve these problems, it is difficult to find a suitable point on the linear network structure by controlling the proper structure or unevenness.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a prefabricated playground floor material improved in design characteristics, impact absorbing function and surface friction property, and a method of manufacturing the same.
Another object of the present invention is to provide a polypropylene single-walled net structure which can be easily removed when foreign matter is penetrated, has a problem in that the stud or the heel of the foot can be worn during walking or exercise, There is provided a prefabricated playground floor material in which a substantial part of a linear network structure is formed in a plate-like structure so as to solve the problem of causing scratches due to dots formed by dots, slanted lines and linear angular fragments, There is.
It is still another object of the present invention to provide a prefabricated playground floor material which is stable and can be improved in performance by covering a surface of a plate-like structure with an elastic, non-slip, and flexible material, and a method of manufacturing the same.
It is another object of the present invention to provide a flooring material having a variety of colors by applying a double injection method using two materials, and a method of manufacturing the same.

According to an aspect of the present invention, there is provided a floor panel comprising: a flat base plate having a plurality of drain holes formed therein and having a plurality of plate-shaped seating grooves formed between the drain holes; A plurality of protrusions protruding from a lower portion of the base frame and integrated with the base frame; And a hardness less than a hardness of the base frame, wherein a material of the seating groove is melted and combined in the same molten state in a seating groove of the base frame by using a double injection molding method Shock absorbing portion; And is formed to include a plurality of protrusions.

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

In addition, the shock absorber may be formed of a resin material or a thermoplastic elastomer (TPE) material containing metallocene in polypropylene or polypropylene.

In addition, the impact absorbing portion may be formed with a plurality of fine concavities and convexities on its surface.

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

According to another aspect of the present invention, there is provided a method of manufacturing a floor panel of a prefabricated playground, comprising the steps of: forming a plurality of drain holes and forming a plurality of plate- A base frame injection molding step in which the base frame is manufactured by an injection molding method; And a shock absorbing part molding step of injecting the base frame into the secondary mold so that the impact absorbing part is filled in the seating recess by applying a double injection molding method; And is formed to include a plurality of protrusions.

In this case, the base frame in the base frame injection molding step may be formed of a polypropylene resin having an ethylene content of 18% to 25%, and the impact absorbing portion may be formed of a polypropylene resin or a polypropylene- It may be made of a resin material or a thermoplastic elastomer (TPE) material containing a metallocene.

Further, in the step of molding the shock absorbing part, a corrosion method may be applied to the surface of the mold frame to form a plurality of fine concave-convex parts on the surface of the impact absorbing part.

In this case, at least one of the fluorescent pigment and the phosphorescent pigment may be mixed and injection-molded in the impact absorbing portion molding step.

The present invention can improve the elasticity, frictional characteristics and stability of the assembly type playground, and improve the stability of the playground in terms of design and color. It is possible to design a prefabricated playground floor material in a remarkably improved form.

In addition, the present invention has the effect of significantly improving the impact absorbing ability by forming the impact absorbing portion on the base frame of the assembled playground floor material.

In addition, since the base frame and the impact absorbing part of the assembled playground floor material are formed by the overmoulding method of a double injector method, it is possible to obtain a large amount of the bulk material while maintaining the structural characteristics relating to the design characteristics of the plate- There is a mass production effect.

Further, the present invention has the effect of improving the sliding characteristic by forming the concave and convex on the surface of the impact absorbing portion of the prefabricated playground floor material.

In addition, the present invention has the effect of exhibiting visually distinctive characteristics at night or day, while the production cost is not greatly increased by diluting a small amount of pigment in the impact absorbing portion.

1 is an exploded perspective view of a prefabricated playground floor material according to an embodiment of the present invention.
FIG. 2 is a perspective view of the assembled playground floor material shown in FIG. 1; FIG.
Fig. 3 is a perspective view of the prefabricated playground floor material shown in Fig. 2 as seen from the bottom. Fig.
Figs. 4A and 4B are plan views showing the assembled playground floor material in two colors. Fig.

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

Hereinafter, the constituent elements of the assembled playground floor material according to one embodiment of the present invention, the coupling relationship of the constituent elements, and the role of the constituent elements will be described.

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

1 to 3, the prefabricated playground flooring according to an embodiment of the present invention includes a base frame 10, protrusions 20, and an impact absorbing portion 30. As shown in FIGS.

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 footrest of people. When people use the base frame 10 as a footrest, the base frame 10 absorbs the impact by self-bending the force applied by the foot.

In this case, a plurality of drain holes 11 are formed in the base frame 10.

Here, the plurality of drain holes 11 are formed in a shape in which a plurality of slits are spaced apart, and water, foreign matter, or the like is allowed to pass to the lower portion of the base frame 10.

A plurality of seating grooves 12 are formed in the base frame 10. In this case, the seating grooves 12 are formed between the drain holes 11 so as not to overlap with the drain holes 11. [ The seating groove 12 is formed in a square groove shape and serves to provide a space for the shock absorbing portion 30 to be seated.

In this case, the plurality of seating grooves 12 may be formed with a connecting groove 13 in the form of a straight line connecting each other, and the impact absorbing portion 30 may be seated and coupled to the connecting groove 13.

In addition, the base frame 10 may further include annular annular portions for connecting a plurality of base frames to the side portions.

The protrusions 20 protrude from a lower portion of the base frame 10 and are integrally formed with the base frame 10. Here, the projections 20 may have a length of between 1 mm and 1.5 mm. These protrusions 20 are installed in contact with the floor of the room or outside. In this case, the impact 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 protrusions 20 are formed of the same resin material, and are integrally formed by injection molding.

The shock absorbing part 30 is formed by curing the material of the seating groove 12 by the double injection method in the seating groove 12 of the base frame 10 in the same molten state while being cooled, do.
In other words, after the base frame 10 is molded by the primary mold by the double injection molding method, the base frame 10 is placed on the secondary mold and the material of the seating groove 12 is made to be the same Absorbing portion 30 in a molten state, and cooling.
Therefore, since the base frame 10 and the impact absorbing portion 30 are combined and attached in a molten state, the base frame 10 and the impact absorbing portion 30 can be separated from each other by the horizontal impact applied by not only a vertical impact but also a force The impact absorbing portion 30 can absorb the shock without being detached.

Here, the shock absorbing portion 30 is formed in a square plate shape to be seated in the seating groove 12. [ The shock absorber 30 may further include a connecting portion 31 to fill the connection groove 13 of the base frame 10.

The shock absorbing part 30 is formed by an overmolding method which is a double injection method using a soft resin material and forms a plate-like elastic surface on the base frame 10 to absorb the shock applied thereto do.

In this case, the base frame 10 is preferably formed of a polypropylene resin material having an ethylene content of 18% to 25%, and the impact absorbing portion 30 is formed to have a hardness lower than that of the base frame 10 . The reason for this is that the base frame 10 is formed of a rigid polypropylene resin material so as to have a hash characteristic so as to support the weight applied from a person's foot, Is formed to be lower than the hardness of the body 10 so as to more absorb the impact applied from the human foot.

Here, the base frame 10 is formed of a polypropylene resin material having an ethylene content of 18% to 25%, because it simultaneously contains both toughness and flexibility at low temperatures to improve weight holding ability and shock absorbing ability to be. In this case, if the ethylene content of the base frame 10 is less than 18%, the ability to support the weight may be improved, but the flexibility may be insufficient to reduce the impact absorption amount to less than the standard size, , The impact absorbing amount may be increased, but the durability may be significantly deteriorated due to the weak ability to support the weight. For reference, polypropylene (PP) and polyethylene (PE), which are olefin resins, are known to be highly stable and environmentally friendly because they can be recycled over aberrations and contain no harmful substances. Also, as is well known in the base frame 10, Talc may be added to reduce shrinkage and expansion.

In this case, it is preferable that the impact absorbing portion 30 is formed of a resin material having a Shore A hardness of 50 to 70. The reason for this is that when the base frame 10 is bent by the impact in the state where the impact absorbing portion 30 is engaged with the base frame 10, the base frame 10 flexes together with the base frame 10, . If the shock absorbing portion 30 is formed to have a hardness lower than the Shore A hardness of 50, the material is too soft. Therefore, shock absorption due to its own off, rather than impact absorption associated with the warp of the base frame 10, So that the amount of shock absorption with respect to the warpage of the base frame 10 is remarkably reduced. On the other hand, when the impact absorbing portion 30 is formed to have a hardness higher than the Shore A hardness 70, when the impact absorbing portion 30 is made of a very hard material and interlocks with the bending of the base frame 10, 30 may be separated from the base frame 10 due to the deformation of the base frame 10 or may not be able to exhibit a shock absorption amount comparable to that of the base frame 10.

In addition, the impact absorbing portion 30 may be formed of a resin material or a thermoplastic elastomer (TPE) material containing metallocene in polypropylene or polypropylene. The reason for this is to improve the bonding force between the impact absorbing portion 30 and the base frame 10, and to improve the weather resistance and abrasion resistance. Considering the adhesive force with the base frame 10, the impact absorbing part 30 can be used with resins such as EVA, PE-LD, TPR, PP Metallocene, PE-Metallocene, TPE-V and TPE-S Among these resins, resin or thermoplastic elastomer (TPE) containing metallocene in polypropylene or polypropylene, which is a resin capable of generating an elasticity of about 50 to 70 in Shore A hardness, is very preferable.

In this case, at least one of the coloring pigment, the phosphorescent pigment, and the fluorescent pigment may be mixed with the shock absorbing portion 30, and the color may be visually conspicuous at night and daytime. Therefore, the shock absorbing part 30 realizes a more beautiful color and design than the conventional assembled exerciser floor material, and secures a walkway at night to improve stability. In this case, the pigment to be diluted in the impact absorbing portion 30 is mixed with the impact absorbing portion 30 having a volume significantly smaller than the entire volume of the base frame 10, so that a visual effect can be obtained with a small amount of pigment The manufacturing cost can also be reduced.

In addition, the impact absorbing portion 30 may be formed by protrusions and protrusions (not shown) of fine protrusions protruding from the upper surface. These irregularities improve the sliding property by improving the friction force with the shoe.

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

A method of manufacturing a prefabricated playground floor material according to an embodiment of the present invention includes a base frame injection molding step using a primary mold by applying a double injection method, Molding step.

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

The impact absorbing part molding step is performed by applying the double injection molding method to the base frame 10 again into the second mold frame (not shown) and attaching the shock absorbing part 30 Is formed by injection molding. Then, the shock absorbing portion 30 having the above-described structure and material is formed.

In this case, at the molding step of the impact absorbing portion 30, the above-described concave-convex portion for etching the inside of the mold surface to improve the sliding property can be formed.

As described above, the prefabricated playground flooring according to one embodiment of the present invention and the method of manufacturing the same are formed in a plate-like structure that is not in a net-like structure, And is formed in a remarkably improved form in terms of design and color.

Particularly, the prefabricated playground flooring according to one embodiment of the present invention and the method of manufacturing the same have a shock absorbing part 30 formed on the base frame 10, which significantly improves the impact absorbing ability.

Since the base frame 10 and the shock absorbing part 30 are formed by an overmolding method, which is a double injection molding method, the base frame 10, 4A and 4B, a two-tone effect can be obtained, and a beautiful coat can be designed in contrast to each color. In addition, Mass production can be achieved while maintaining the characteristics and structural characteristics.

10; Base frame
20; spin
30; Shock absorber

Claims (9)

A base plate having a flat plate shape in which a plurality of drain holes are formed and a plurality of plate grooves are formed between the drain holes;
A plurality of protrusions protruding from a lower portion of the base frame and integrated with the base frame; And
The base frame is made of a flexible resin material having hardness less than the hardness of the base frame, and a double injection method is applied to the base frame so that the material of the seat groove is melted, Absorbing portion; Wherein the floor surface is formed with a plurality of grooves. The method according to claim 1,
Wherein the base frame is formed of a polypropylene resin material having an ethylene content of 18% to 25%
Wherein the impact absorbing portion is formed of a resin material having a Shore A hardness of 50 to 70. 3. The method of claim 2,
Wherein the impact absorbing portion is formed of a resin material or a thermoplastic elastomer (TPE) material containing metallocene in polypropylene or polypropylene. The method according to claim 1,
Wherein the impact absorbing portion has a plurality of fine concavities and convexities on the surface thereof. The method according to claim 1,
Wherein the shock absorbing part is formed by mixing at least one of a fluorescent pigment and a phosphorescent pigment. A base frame injection molding step of inserting a base frame having a flat plate shape in which a plurality of drainage holes are formed and a plurality of recessed grooves having a plate-like structure between the drainage holes, into a primary die mold and manufacturing the same by an injection molding method; And
A shock absorbing part molding step of injecting the base frame into a secondary mold frame so that the impact absorbing part is filled in the seating recess by applying a double injection molding method; Wherein the plurality of the flooring members are formed to include a plurality of the flooring members. The method according to 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%
Wherein the shock absorbing part is formed of a resin material or a thermoplastic elastomer (TPE) material containing metallocene in polypropylene or polypropylene in the impact absorbing part molding step. The method according to claim 6,
Wherein a corrosion method is applied to the surface of the metal mold in the impact absorbing portion molding step to form a plurality of fine concave portions on the surface of the impact absorbing portion. The method according to claim 6,
Wherein at least one of the fluorescent pigment and the phosphorescent pigment is mixed and injection molded in the impact absorbing part molding step.

Images