KR100812523B1 - Complex plastic panel and the manufacturing device thereof - Google Patents

Abstract

A composite synthetic resin panel and a manufacturing device for the same are provided to improve the strength of the panel by using regenerated PE(Polyethylene) materials for an inner resin layer forming a hollow structure and to increase support strength by forming the reinforcing pillar in the center of a partition of the hollow structure. A composite synthetic resin panel(100) having a plurality of longitudinal hollow parts(106) formed in a width direction is composed of an inner resin layer(104) forming a partition of the hollow part and an outer resin layer(102) integrally formed on the surface of an outer wall of the inner resin layer. The outer resin layer is made of original PE materials and the inner resin layer is made of regenerated PE materials. A cylindrical reinforcing pillar(108) having a diameter larger than the thickness of the partition is formed at the partition of the hollow part in a longitudinal direction of the partition.

Description

COMPLEX PLASTIC PANEL AND THE MANUFACTURING DEVICE THEREOF

1a and 1b is a perspective view and a cross-sectional view showing the structure of a synthetic resin panel according to the prior art.

Figure 2 is an exploded perspective view showing the structure of a manufacturing apparatus of a synthetic resin panel according to another prior art.

Figure 3 is a cross-sectional view showing the structure of a composite synthetic resin panel according to an embodiment of the present invention.

Figure 4 is a block diagram showing an apparatus for producing a synthetic resin panel of the present invention.

5A is a plan view showing the structure of a die;

5B is a front view showing the structure of the dice;

Figure 5c is a cross-sectional view showing the structure of the second inlet and the dispersion passage.

The present invention relates to a composite synthetic resin panel and a manufacturing apparatus thereof, and more particularly, in the production of a synthetic resin panel having a hollow formed therein, using a recycled polyethylene raw material inside and a polyethylene raw material not recycled outside. The present invention relates to a composite synthetic resin panel capable of improving properties and a manufacturing apparatus thereof.

Synthetic resin panels used for the production of water tanks or water tanks are manufactured to have a hollow structure inside to improve workability while withstanding high pressure. In the case of having a hollow structure by the diaphragm, since the inner air layer is present, the insulation is also increased.

Synthetic resin panels can be used as raw materials for not only water tanks, but also for ditch walls, rectifying walls, and partition walls.

1A and 1B are a perspective view and a cross-sectional view showing a structure of a synthetic resin panel according to the prior art, in which the conventionally disclosed synthetic resin panel 10 inserts a wavy partition body 14 between two flat outer walls 12. Made in a way.

A plurality of such panels 10 are connected to produce a cylindrical or cuboid reservoir.

When manufactured by dividing the outer wall 12 and the partition 14 as shown in Figure 1 there is an advantage that the material and the shape of the partition 14 to enter inside can be more freely determined.

However, the outer wall 12 and the partition wall 14 are bonded to each other with an adhesive or the like, and thus, the outer wall 12 and the partition wall 14 need to be manufactured and bonded separately. There are disadvantages.

In addition, Figure 2 is an exploded perspective view showing the structure of a manufacturing apparatus of a synthetic resin panel according to another prior art, the invention was devised to solve the above problems.

The apparatus for manufacturing a synthetic resin panel shown in FIG. 2 includes a heating plate 20, an air inlet 24, a heater driving unit 26, an air hole 28, and a space 30.

A plurality of cores 22 are arranged in the longitudinal direction in the space 30 to form the hollow portion 36.

When the resin A in the molten state is introduced into the manufacturing apparatus, it has a panel shape in which a plurality of hollow parts 36 are formed while passing through the space part 30.

According to this invention, a plurality of hollow parts 36 are formed while partition walls are positioned between the upper plate 32 and the lower plate 34, and the entire panel is made of one type of resin in one piece. Therefore, the structure of the die for manufacturing the panel has the advantage of being simple, but since the material inside and outside the panel must be used as the same component, there is a disadvantage that the manufacturing cost increases.

In addition, there is a problem in that the support strength of the panel cannot be increased because a material having a higher strength or hardness than the material of the outer wall cannot be used for the inner wall.

The present invention has been made to solve the above problems, to provide a composite composite panel and a manufacturing apparatus for reducing the process time and production cost by integrally extruding the outer wall and the hollow structure of the inside. The purpose.

In addition, an object of the present invention is to provide a composite synthetic resin panel and its manufacturing apparatus to improve the strength of the panel and reduce the overall manufacturing cost by using the recycled polyethylene raw material in the internal resin layer forming a hollow structure. .

In addition, an object of the present invention is to provide a composite synthetic resin panel and its manufacturing apparatus to further improve the support strength by forming a reinforcement column in the center of the partition wall forming a hollow structure.

The present invention for solving the above problems is a synthetic resin panel formed of a plurality of hollow in the width direction, the inner resin layer for forming the hollow partition wall; An outer resin layer integrally formed on the outer wall surface of the inner resin layer; wherein the outer resin layer is made of polyethylene in a pure raw material state, and the inner resin layer is made of polyethylene in a regenerated state. It is done.

The hollow partition wall is characterized in that the cylindrical reinforcement pillar having a diameter larger than the thickness of the partition wall is formed in the longitudinal direction.

Coupling protrusions are formed on one side of the inner resin layer in the width direction, and coupling grooves are formed on the other side of the inner resin layer in the width direction, and the joining protrusion formed on one panel is fitted into the joining grooves formed on another adjacent panel. It is characterized by being fixed in the formula.

According to another embodiment of the present invention, there is provided a display apparatus including: a first extrusion supply unit supplying a first resin in a molten state; A second extrusion supply unit supplying a second resin in a molten state; A first main inlet is provided inside the first resin supplied from the first extrusion supply part in a direction parallel to the molding path, and an outlet for discharging the extrudate is provided on the opposite side of the first inlet. A die provided with a second inlet such that the second resin supplied from the second extrusion supply part is injected in a direction perpendicular to the molding path; A sizing for supporting a shape of the extrudate discharged through the outlet so as not to be deformed; And a water tank for cooling the extrudate discharged through the sizing, wherein the first resin is polyethylene in a regenerated state and the second resin is polyethylene in a pure raw state.

The die is in communication with the first inlet, the forming passage having a structure gradually widening in the width direction; A plurality of cores installed inside the outlet and having a predetermined gap with an inner wall surface of the outlet; It is in communication with the second inlet, the dispersion passage for discharging the second resin into the inner side of the upper and lower walls of the forming passage; including, a plurality of hollows formed in the width direction by the first resin injected into the forming passage An inner resin layer is formed, and the second resin injected into the dispersion passage is integrally formed on the outer wall surface of the inner resin layer.

The cross section of the core is any one of a rectangular, circular, oval, characterized in that the air circulation passage is formed in the core in the longitudinal direction.

The surface of the core is characterized in that the cylindrical groove having a diameter larger than the spacing between the plurality of cores are formed in the longitudinal direction.

Hereinafter, a composite synthetic resin panel and a manufacturing apparatus thereof according to an embodiment of the present invention will be described with reference to the drawings.

Synthetic Resin Panel

3 is a cross-sectional view illustrating a structure of a composite synthetic resin panel (hereinafter, referred to as a panel) according to an embodiment of the present invention, which will be described with reference to FIG. 3.

The panel 100 of the present invention is manufactured by an extrusion molding method while the inner resin layer 104 forms a hollow 106 between two outer resin layers 102. The outer resin layer 102 and the inner resin layer 104 are integrally formed in one extrusion process, and do not undergo a separate bonding process as in the prior art.

The hollow 106 is continuously formed in the longitudinal direction of the panel 100, and a plurality of hollows 106 are formed in the width direction of the panel 100. The size of the hollow 106 and the number of the hollow 106 in the width direction may vary depending on the width of the panel 100.

The cross section of the individual hollows 106 preferably has a substantially square shape, but may also have a circular, elliptical, or rectangular shape depending on the application.

In addition, a plurality of hollows 106 may be formed in the thickness direction of the panel 100, and a plurality of hollows 106 may be formed in both the width direction and the thickness direction, thereby forming a grid pattern.

In addition, although the raw material of the outer resin layer 102 and the inner resin layer 104 is made from polyethylene (PE) as a raw material, the state is comprised slightly different.

That is, the outer resin layer 102 uses polyethylene in a pure raw material state, and the inner resin layer 104 uses polyethylene in a regenerated state. The net raw material state refers to a state in which the polyethylene raw material has never undergone a heat conversion process, and the regenerated state refers to a state in which the polyethylene raw material is formed into a final synthetic resin product through heating.

As the polyethylene raw material is regenerated, impurities increase, and strength and rigidity become greater than those of the initial pure raw material.

Therefore, when molding using the recycled raw material for the internal resin layer 104, the strength of the internal partition wall becomes harder than the outside, it can withstand higher pressure or impact. In addition, the recycled raw material has a lower melting point than the net raw material, so the cooling rate is faster, so the work time is shortened.

In addition, since the external resin layer 102 is a portion exposed to the outside, it may be coated with various colors for aesthetics, and the coloring becomes more easy in the pure raw material state.

In addition, when used to make a water tank should be made of a component that is in direct contact with water harmless to the human body, in the case of pure raw materials may be safer because less impurities.

On the other hand, in the partition wall forming the hollow 106 of the inner resin layer 104, a cylindrical reinforcement pillar 108 having a diameter larger than the thickness of the partition wall is formed in the longitudinal direction. The reinforcement pillar 108 is formed continuously in the longitudinal direction, such as the hollow 106, the support strength of the partition can be higher by having a reinforcement pillar 108 thicker than the thickness of the partition wall.

The cross section of the reinforcing column 108 may be rectangular as well as circular.

In addition, the coupling protrusion 110 is formed on one side of the width direction of the inner resin layer 104, and the coupling groove 112 is formed on the other side of the opposite direction in which the coupling protrusion 110 is fixed by interference fit.

Since the panel 100 of the present invention is produced by an extrusion molding method, the length can be produced without limitation, but the width is limited by the size of the mold. Therefore, in the case of manufacturing a long water tank having a wide width, it is necessary to connect several panels 100 by welding or adhesive method, in which the coupling protrusion 110 and the coupling groove 112 can be easily worked as in the present invention.

Since the width of the outer side of the coupling protrusion 110 is about the same as the width of the inner side of the coupling groove 112, the coupling protrusion 110 is firmly fixed in the coupling groove 112.

Synthetic Resin Panel Manufacturing Equipment

On the other hand, Figure 4 is a block diagram showing an apparatus for producing a synthetic resin panel of the present invention.

As shown in FIG. 4, in order to manufacture the synthetic resin panel 100 of the present invention, a first extrusion supply unit 200 and a second extrusion supply unit 300 for injecting two raw materials are provided.

The first extrusion supply unit 200 injects the first resin made of polyethylene in the regenerated state into the die 400, and the second extrusion supply unit 300 is made of the pure resin in the dies 400. Inject.

The first resin is injected in a direction parallel to the molding path, and the second resin is injected in a direction perpendicular to the molding path.

The die 400 is provided with a plurality of cores for forming the hollow 106, the above-described composite synthetic resin panel 100 is extruded. In addition, it is preferable that an air circulation passage is provided inside the core so that the resin can be rapidly cooled while the resin is molded in the die 400.

The sizing 500 supports the panel 100 inside and outside so that the shape of the extruded panel 100 does not collapse, and the water tank 600 cools the panel 100 discharged through the sizing 500 using cooling water. Let's do it.

When producing the panel according to the prior art is provided with only one extrusion supply unit to inject the same raw material inside and outside, in the present invention, because the properties of the raw material inside and outside is different, a separate extrusion supply unit is required.

5A and 5B are a plan view and a front view showing the structure of the die, and FIG. 5C is a cross-sectional view showing the structure of the second inlet and the dispersion passage.

As shown in FIGS. 5A to 5C, the die 400 includes a first inlet 402 and a second inlet 410.

The first inlet 402 is connected to the first extrusion supply unit 200, and the second inlet 410 is connected to the second extrusion supply unit 300.

Inside the first inlet 402 is provided with a forming passage 404 having a structure that gradually widens in the width direction of the die 400, the forming passage 404 is in communication with the first inlet 402.

An outlet 406 through which the extrudate (panel) is discharged is formed at the opposite side of the forming passage 404, and a plurality of cores 408 are provided at a predetermined gap from the inner wall of the outlet 406 inside the outlet 406. ) Is installed in the longitudinal direction. Therefore, the resin supplied to the die 400 exits through the outer wall of the core 408 and exits to the outlet 406. The first resin injected through the first inlet 402 passes through the molding passage 404 to discharge the outlet ( 406 is molded into the shape of the inner resin layer 104 formed with a plurality of hollows.

The direction of the forming passage 404 is parallel to the forming route of the first resin.

On the other hand, the second inlet 410 is in communication with the distribution passage 412, the distribution passage 412 is connected to the inside of the upper and lower walls of the forming passage 404. Therefore, the second resin injected through the second inlet 410 is discharged into the upper and lower walls of the forming passage 404 through the distribution passage 412.

Since the inner resin layer 104 by the first resin already exists in the molding passage 404, the second resin is applied to the outer wall of the inner resin layer 104 to form the outer resin layer 102.

Since the second inlet 410 and the dispersion passage 412 are injected in a direction perpendicular to the molding path of the first resin, the second resin is adhered to the surface of the first resin that runs laterally, and together with the outlet 406. Move.

The panel 100, in which the inner resin layer 104 and the outer resin layer 102 are integrally formed, is cooled through the outlet 406, and the shape is fixed while passing through the sizing 500 and the water tank 600.

Therefore, the inside has a hollow structure using a recycled raw material, the outside is a composite synthetic resin panel 100 having a flat structure using a pure raw material is produced.

The panel 100 is cooled while passing through the sizing 500 and the water tank 600, but it is necessary to lower the temperature to a certain degree even when passing through the die 400. In the case of forming the die 400 and cooling at the same time, the inner and outer structures of the panel 100 become more robust and can maintain the original shape. For this purpose, an air circulation passage (not shown in the drawing) inside the core 408. C).

The air circulation passage allows the air to circulate naturally or forcibly, thereby releasing the heat of the core 408 more quickly.

In addition, grooves are formed in the longitudinal direction on the surface of the core 408 to form the reinforcement pillar 108 in the hollow partition wall.

The grooves on the surface of the core 408 are preferably cylindrical in shape with a diameter larger than the spacing between which each core 408 is spaced apart, but may also be rectangular or elliptical in shape.

Such equipment can be used to produce composite panels with different internal and external raw materials.

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the above-described technical configuration of the present invention may be embodied by those skilled in the art to which the present invention pertains without changing its technical spirit or essential features of the present invention. It will be appreciated that the present invention may be practiced as. Therefore, the exemplary embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the detailed description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

According to the present invention, there is an effect of producing a composite synthetic resin panel that can increase the cost reduction and strength improvement effect using the recycled raw material inside, and improve the finish using the net raw material.

Claims (7)

A synthetic resin panel formed of a plurality of hollow in the width direction in the longitudinal direction, An internal resin layer forming the hollow partition wall; It consists of an outer resin layer formed integrally on the outer wall surface of the inner resin layer, The outer resin layer is produced from a polyethylene material in a pure raw material state, The composite resin panel, characterized in that the inner resin layer is produced from a polyethylene material in a regenerated state. The method of claim 1, The composite partition panel of the hollow partition wall is characterized in that the cylindrical reinforcement pillar having a diameter larger than the thickness of the partition wall is formed in the longitudinal direction. The method of claim 2, Coupling protrusions are formed on one side in the width direction of the inner resin layer, Coupling grooves are formed on the other side surface in the width direction of the inner resin layer, Combined projections formed in one panel composite composite resin panel, characterized in that fixed to the coupling groove formed in the other adjacent panel. A first extrusion supplier for supplying a first resin in a molten state; A second extrusion supply unit supplying a second resin in a molten state; A first inlet is provided inside the first resin supplied from the first extrusion supply part in a direction parallel to a molding path, and an outlet for discharging the extrudate is provided on the opposite side of the first inlet, and on one side of the first resin. A die provided with a second inlet such that the second resin supplied from the second extrusion supply unit is injected in a direction perpendicular to the molding path; A sizing for supporting a shape of the extrudate discharged through the outlet so as not to be deformed; And a water tank for cooling the extrudate discharged through the sizing. Wherein said first resin is a polyethylene in a regenerated state, and said second resin is a polyethylene in a pure raw material state. The method of claim 4, wherein The dice A forming passage communicating with the first inlet and having a structure gradually widening in the width direction; A plurality of cores installed inside the outlet and having a predetermined gap with an inner wall surface of the outlet; And a dispersion passage communicating with the second inlet and discharging the second resin into the upper and lower wall surfaces of the molding passage. An internal resin layer in which a plurality of hollows are formed in the width direction is formed by the first resin injected into the molding passage, And a second resin injected into the dispersion passage is integrally formed on the outer wall surface of the inner resin layer. The method of claim 5, The cross section of the core is any one of a rectangle, a circle, an oval, The composite synthetic resin panel manufacturing apparatus, characterized in that the air circulation passage is formed in the core in the longitudinal direction. The method of claim 5, Composite core panel manufacturing apparatus, characterized in that the cylindrical surface having a larger diameter than the gap between the plurality of cores are formed in the longitudinal direction on the surface of the core.

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