KR20180032777A - Urethane aggregate manufacturing method - Google Patents

Abstract

The present invention relates to a method for manufacturing an aggregate in which urethane is a main material, wherein the method comprises the following steps: injecting an urethane resin into a conveyor (10) to continuously form an urethane plate (19); pulverizing the urethane plate (19) to form an urethane chip (31); and mixing the urethane chip (31) with silica (32) to form a mixed aggregate (35). According to the present invention, the particle size of the urethane aggregate can be formed finely and constantly, and as a result, smoothness, elasticity and durability of a package or the finished surface to which the aggregate is applied can be drastically improved, and an effect of improving ease of construction can be obtained.

Description

URETHANE AGGREGATE MANUFACTURING METHOD BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a method for producing an aggregate (main material) in which urethane is a main material, and a urethane resin is sprayed onto the conveyor 10 to continuously form the urethane board 19, And the urethane chip 31 and the silica sand 32 are mixed to form a mixture aggregate 35.

Urethane resin has unique characteristics such as flexibility and oil resistance as well as ease of foam molding and is utilized in various fields such as building waterproofing materials and insulation materials, fillers for furniture and household goods, automobile interior materials and aggregate for packaging.

Particularly, the urethane resin as an aggregate is processed into a chip form and used as an aggregate for packing and finishing. It is not only excellent in durability but also easy in construction, And is widely used for packaging or finishing a building roof or the like, and related art is disclosed in Japanese Patent No. 553241. [

Conventional urethane aggregate, including patent No. 553241, is produced by simply pulverizing wastes made of foamed urethane masses or urethane to form granular particles, which are then granulated with granular particles Not only coarse-grained particles are mixed, but also their distribution is extremely irregular.

That is, it is difficult to crush fine grains by virtue of the flexibility and stretchability inherent in the urethane resin, and a large amount of agglomerated grains which are not sufficiently pulverized during the grinding process are formed. As a result, It is difficult.

Therefore, in the finished urethane aggregate, incorporation of coarse particles, which are several times to several tens of times the normal particle size, is inevitable. In using the urethane aggregate as a packaging material and a finishing material, not only the workability is lowered but also the tightening with the other aggregate is difficult As a result.

Particularly, the poor quality of the conventional urethane aggregate can not be avoided as a problem in the process of smoothly molding the package or the finished surface, thereby seriously lowering the convenience of the workability and improving the quality of the finished package and finished surface Which is a serious problem.

Accordingly, a large amount of filler such as general sand (sand) aggregate and sawdust is mixed with urethane aggregate, and a large amount of chemical agent such as an adhesive agent and a hardener is added in order to compensate for a decrease in joints between aggregates due to the mixing of fillers and a decrease in elasticity In this process, a large amount of harmful substances including heavy metals are contained in the package or the finish surface, resulting in a serious problem that threatens the user safety and health.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method of manufacturing a urethane aggregate, in which liquid urethane resin is ejected from a blowing device 11 installed at a belt start point of a conveyor, The step of arranging the surface of the urethane resin ejected by the blade 12 provided on the upper part of the conveyor 10 smoothly and the step of removing the urethane resin by the peeling plate 14 provided at the end point of the belt of the conveyor 10 A step in which the urethane plate 19 is inserted into the crusher 20 to form a urethane chip 31 having a particle diameter of 1 mm to 3 mm; To 70% by weight of silica and 30% by weight to 50% by weight of silica sand (32) to form a mixture aggregate (35).

In the method for producing a urethane aggregate, liquid urethane resin is ejected from the ejection device 11 provided at the starting point of the belt of the conveyor 10, and a blade The step of arranging the surface of the urethane resin ejected by the conveyor 10 smoothly and the step of peeling the urethane resin by the peeling plate 14 provided at the end point of the belt of the conveyor 10, A step of forming a urethane plate 19 while passing the urethane resin through the pressing roller 15 installed in the crusher 20 and forming a urethane chip 19 having a particle diameter of 1 mm to 3 mm , And mixing the urethane chips (31) and 50 to 70 wt% of the urethane chips (31) and 30 to 50 wt% of the silica (32) to form a mixture aggregate (35) Method.

According to the present invention, it is possible to finely and uniformly form the particle size of the urethane aggregate, thereby remarkably improving the flatness, elasticity and durability of the package or the finished surface to which the aggregate is applied, The effect can be obtained.

Particularly, through the present invention, it is possible not only to solve the problem of granularity, which was a problem of the conventional urethane aggregate, but also to minimize the use of a filler and a chemical agent which have been put into a large amount during the construction of the urethane aggregate, The harmfulness of the aggregate application facility can be drastically reduced and the user health can be secured.

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Fig. 2 is an explanatory diagram of a conveyor operating state according to the present invention
3 is a graphical illustration of a grinder and a mixer operating state according to the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in the drawing, the present invention comprises a conveyor 10 for continuously forming a urethane board 19, a molded urethane board 19 And a mixer 40 for mixing the urethane chips 31 and the silica sand 32 to form a compounded aggregate 35. The urea chips 31 and 32 are mixed with each other to form a urethane chip 31, .

That is, the present invention is disclosed by continuous forming of the urethane plate 19 through the belt conveyor 10. The concrete construction and operation of the conveyor 10 for carrying out the present invention is shown in FIG.

As shown in FIG. 2, the conveyor 10 for carrying out the present invention includes a belt to be circulated, an ejection device 11 that is installed on the belt in order from the start point of the belt to the end point side, A blade 12, a flat roller 13, a peeling plate 14, and the like.

Further, a pressing roller 15 may be additionally provided at the rear end of the conveyor 10, that is, outside the stripping plate 14 at the end point of the belt.

Here, the belt starting point and the end point of the conveyor 10 are set with reference to the top surface conveying direction of the belt to be circulated, and the urethane plate 19 molded in the present invention is conveyed to the end point starting from the viewpoint of the belt.

The present invention carried out through such a conveyor 10 is characterized in that liquid urethane resin is ejected from the ejection device 11 installed at the belt viewpoint of the conveyor 10 and is fed to the blade 12 provided above the belt of the conveyor 10 And the surface of the urethane resin ejected therefrom is smoothed.

The blowing device 11 is a kind of nozzle installed on the upper side of the belt viewpoint of the conveyor 10 and mixes and discharges a foamed urethane resin raw material such as polyol and isocyanate in a liquid phase, Conveyed in a state in which it is stacked on the upper surface of the belt of the conveyor 10, and the surface is smoothed while passing through the blade 12. [

The blade 12 is a plate member which is slightly spaced from the upper surface of the belt of the conveyor 10 and which is inclined as illustrated in Fig. 2 and curved at a lower end thereof, The urethane resin loaded on the upper surface is flattened while passing through the bottom surface of the blade 12. [

2, in addition to the blades 12, a flat roller 13 is additionally provided on the upper side of the belt of the conveyor 10 so that the urethane The resin may be slightly compressed and a urethane resin having a flat and dense texture may be formed.

Thereafter, the urethane resin transferred in a state of being closely attached to the belt is peeled off by the peeling plate 14 provided at the end point of the belt of the conveyor 10 to be formed into the urethane plate 19. The peeling plate 14, As shown in Fig. 2, a belt-side end portion of the conveyor 10 is formed into a sharp-edged plate, and a sharp end portion thereof is provided in contact with the end point belt of the conveyor 10 so that the urethane resin, 14, peeled from the belt, and then discharged through the upper surface of the peeling plate 14.

3, the shaped urethane plate 19 is put into a crusher 20 and crushed and processed into a urethane chip 31 having a particle diameter of 1 mm to 3 mm. Thereafter, The mixture ratio of the urethane chip 31 and the silica sand 32 is 50 to 70% by weight and the silica sand 32 is mixed with the urethane chips 31 and 40, 30% by weight to 50% by weight.

The crushing of the urethane plate 19 by the crusher 20 is performed in a cold state, and in particular, the urethane plate 19 having a uniform particle diameter can be formed by cooling the crushed urethane plate 19 by cooling with cold air and crushing have.

On the other hand, the urethane plate 19 formed through the conveyor 10 is rolled to form a urethane plate 19 having a dense and solid structure as a whole, whereby the physical properties of the urethane chip 31 can be improved. The rolling of the roller 19 is performed through the squeeze roller 15 as illustrated in Fig.

2, after the urethane resin is peeled off by the peeling plate 14 provided at the belt end point of the conveyor 10, a pair of pressing rollers 15 (see FIG. 2) provided at the rear end of the conveyor 10, , The urethane plate 19 is molded while the urethane resin passes through it, thereby compressing the urethane plate 19 to densify the structure.

Thus, by crushing the urethane plate 19 formed with a dense and solid structure, the urethane chip 31 having improved strength and durability as an aggregate can be formed. As a result, the performance and durability of the finished package or finished surface can be improved .

10: Conveyor
11: Sputtering device
12: Blade
13: Flat Roller
14: peel plate
15: Squeeze roller
19: Urethane plate
20: Grinder
31: urethane chip
32: Silica sand
35: Mixed aggregate
40: Mixer

Claims (2)

A method for producing a urethane aggregate,
The liquid urethane resin is ejected from the ejection device 11 provided at the belt start point of the conveyor 10 and the urethane resin surface ejected by the blade 12 provided on the upper part of the belt of the conveyor 10 A step of smoothly arranging;
The urethane resin is peeled off by the peeling plate 14 provided at the belt end point of the conveyor 10 to form the urethane plate 19;
A urethane plate (19) is charged into a crusher (20) to form a urethane chip (31) having a particle diameter of 1 mm to 3 mm;
Wherein the mixing aggregate (35) is formed by mixing 50% by weight to 70% by weight of the urethane chip (31) and 30% by weight to 50% by weight of silica sand (32).
A method for producing a urethane aggregate,
The liquid urethane resin is ejected from the ejection device 11 provided at the belt start point of the conveyor 10 and the urethane resin surface ejected by the blade 12 provided on the upper part of the belt of the conveyor 10 A step of smoothly arranging;
The urethane resin is peeled off by the peeling plate 14 provided at the belt end point of the conveyor 10 and the pressure roller 15 attached to the rear end of the conveyor 10 is peeled off from the urethane resin 19) are formed;
A urethane plate (19) is charged into a crusher (20) to form a urethane chip (31) having a particle diameter of 1 mm to 3 mm;
Wherein the mixing aggregate (35) is formed by mixing 50% by weight to 70% by weight of the urethane chip (31) and 30% by weight to 50% by weight of silica sand (32).

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