KR102160010B1 - Resin composition for flooring of container and manufacturing device for flooring of container using same - Google Patents

Abstract

The present invention relates to a resin composition for flooring of a container and a manufacturing apparatus for flooring of a container using the same. More particularly, the present invention relates to a resin composition for flooring of a container with improved processability and impact resistance suitable for molding through extrusion molding, and a manufacturing apparatus for flooring of a container using the same. To this end, low-density polyethylene (LDPE) and high-density polyethylene (HDPE) are mixed in a weight ratio of 1 : 5 to 1 : 10.

Description

Resin composition for flooring of container and manufacturing device for flooring of container using the same

The present invention relates to a resin composition for flooring of a container and a manufacturing apparatus for flooring of a container using the same, and more particularly, to a resin composition for flooring of a container with improved processability and impact resistance suitable for molding through extrusion molding, and a container using the same. It relates to a manufacturing apparatus for flooring.

The container for transporting cargo is a steel structure using approximately section steel and metal plates, and the outer stiffness is excellent, but the inside where the cargo is loaded does not have a separate structure that absorbs the shock transmitted during transportation, so it can prevent damage to the loaded cargo. There was a problem that was difficult to prevent. In order to solve this problem, a separate interior material is provided on the inner wall and the floor in order to absorb shock or alleviate the shock inside the container, and the interior material is divided into a wall material and a floor material.

Wood is mainly used for these interior materials. When used as a wall material, there is no problem of durability because it does not directly support the weight of the cargo. However, when used as a floor material, the buffer effect against the load of the cargo is poor, making it easy to use. There was a problem of being damaged.

In other words, in the case of wood flooring, a plywood or the like is usually formed into a flat material and then continuously placed on the bottom of the container. Such wood has a problem that it is easily damaged according to the self-load of the loaded cargo, and due to invasion of moisture. It is used as a one-time use because it is difficult to recycle because it is not easy to clean and sterilize, and this has become one of the reasons for the increase in transportation costs required for cargo transportation.

As a conventional technique proposed to solve this problem, Korean Patent Registration No. 10-0645935 has been proposed.

The prior art is a flooring material made of synthetic resin material by integrally filling a resin composition through a foaming process into an external element molded into a hollow plate shape through a series of extrusion processes.

Here, the prior art is manufactured through a manufacturing apparatus including an extruder, a foaming molding machine, a drawer, and the like.In the process of extruding in the extruder, the edges of both sides of the extruded product in the width direction are not uniformly formed, so additional cutting operations have to be performed.

Therefore, a separate device for additional cutting work is configured or an operator cuts it manually, but it is difficult to obtain uniform quality when performing manually, and if a separate device is to be configured, the cost, location, and interlocking with the extruder, etc. There was a problem in which a task that had to be adjusted for control means and the like was additionally required.

In addition, in the case of conventional flooring, recycled PE is used as a raw material.Since such recycled PE has poor impact resistance and abrasion resistance, there is a problem of damage applied during processes such as extrusion and foam molding, and it may have been installed on the bottom of the container. There is a problem in that it is difficult to prevent spoilage due to temperature change, and it is difficult to eradicate bacteria that have already occurred even through washing and sterilization operations.

Korean Patent Registration No. 10-0645935

The present invention has been proposed to solve the above problems, and provides a resin composition for container flooring for container flooring manufactured through a foam molding method, but is optimized to be suitable for a container flooring manufacturing apparatus including an extruder and a cooling means. It is an object of the present invention to provide a resin composition for flooring of containers having improved processability.

In addition, it is an object of the present invention to provide a resin composition for flooring of a container that has improved impact resistance and can exhibit sufficient physical properties to support the load pressure of a heavy object disposed on the bottom of the container.

In addition, it is an object of the present invention to provide a resin composition for flooring of a container containing polyethylene so as to suppress decay of the flooring material due to temperature change and humidity, and to facilitate washing and sterilization operations.

In order to achieve the above object, the present invention,

In order to achieve the above object, the present invention is a low-density polyethylene (LDPE) having a melt index of 0.5 g/10 min or more and a density of 0.910 to 0.914 g/cm 3 and

It is characterized by mixing high-density polyethylene (HDPE) having a melt index of 0.5g/10min or more and a density of 0.958 to 0.960g/cm3 in a weight ratio of 1:5 to 1:10.

The container flooring manufacturing apparatus using the resin composition for flooring of the container,

The raw material introduced through the hopper is foamed in a screw cage generating high heat to form a flat-shaped outer plate, and the hollow of the outer plate is filled with the resin composition for flooring to form an extruded product, and then molded through the extruder. A compression unit for forming a shape while pressing the extruded product, and curing the compressed extruded product through a water-cooled cooling means,

In the extruder,

Filling means for filling the resin composition for flooring into the hollow flat plate formed by foaming the raw material is further provided,

The filling means,

A housing formed in a hollow cylindrical shape and having an outlet through which the resin composition for flooring is discharged,

A partition plate made of a material having an elastic restoring force while partitioning the interior of the housing,

A light-transmitting lens disposed on the upper end of the housing,

A pressure-generating liquid stored relatively above the space partitioned through the partition plate,

It characterized in that it comprises a supply pipe for supplying the resin composition for flooring relatively below the space partitioned through the partition plate.

The compression unit for pressing the extruded product,

Pressing plates arranged side by side at regular intervals from each other,

A lifting cylinder that operates by the applied power and signal, and the end of the rod entering and leaving is coupled to the pressing plate to lift it,

A base plate disposed in a direction opposite to the pressing plate,

A cutting cutter that cuts both edges in the width direction of the extruded product compressed from the pressing plate,

It characterized in that it comprises an elastic support for elastically supporting the cutting cutter to the side of the extrusion.

In the housing,

A circular inlet opened on the upper side is formed, and the cross section gradually narrows from circular to linear as it goes downward, and a slit through which the resin composition for flooring material is discharged is formed at the lower end, so that the resin composition for flooring material can be moved only to the outlet side. It characterized in that it is further provided with a backflow prevention device to guide to.

The compression unit for pressing the extruded product,

Pressing plates arranged side by side at regular intervals from each other,

A lifting cylinder that operates by the applied power and signal, and the end of the rod entering and leaving is coupled to the pressing plate to lift it,

A base plate disposed in a direction opposite to the pressing plate,

A cutting cutter that cuts both edges in the width direction of the extruded product compressed from the pressing plate,

It characterized in that it comprises an elastic support for elastically supporting the cutting cutter to the side of the extrusion.

The elastic support,

Both ends are arranged side by side at a mutually spaced position and each has an elastic control piece with a perforated control hole,

An elastic adjustment bolt inserted so as to engage each of the pair of adjustment holes to narrow or widen the gap of the elastic adjustment pieces according to the rotation direction,

A nut fixedly disposed in any one of the adjustment holes to engage the elastic adjustment bolt,

It is characterized in that it comprises an elastic piece that connects the elastic adjustment piece and protrudes toward the outside so that the end portion contacts the outer surface of the cutting cutter.

The cooling means,

It is disposed above the compression plate for pressing the extruded product,

A discharge unit including a nozzle for discharging the coolant pumped and transferred from the coolant storage tank to the extrusion molding and cutting cutter;

In order to collect and recycle the cooling water used to cool the extruded product, a fragment collection module for collecting fragments of the extruded product cut through the cutting cutter is further provided.

The resin composition according to the present invention, made as described above, has excellent processability and exhibits the same degree of physical properties as that of a commercially available container flooring material, and has excellent processability and strong impact resistance, so that damage to load pressure is prevented. Minimized,

It is easy to clean and sterilize, so the convenience of recycling is high, and it has the advantage of improving the stability by not affecting the cargo that has been stored for a long time.

In addition, in the manufacturing apparatus for manufacturing the flooring material of the container by foaming and filling the raw material and the resin composition through the manufacturing apparatus for manufacturing the flooring material using the resin composition, in the process of being compressed through the extruder, at the edge of the width direction of the extruded product. By cutting the protruding part outward, it is possible to provide a flooring material for the container that has improved marketability,

When cutting unnecessary portions protruding from the rim, an elastic support member that elastically supports the cutting cutter with a certain elastic force is further provided to maintain a certain shape, so that the flooring material of the container having the same quality can be obtained.

In addition, a filling means for filling the hollow of the foamed raw material with a resin composition for flooring is provided, and the resin composition and the pressure generating liquid are stored in the filling means in a space independently divided by a partition plate for generating the pressure. By irradiating the liquid with a laser to increase the volume so that the resin composition is discharged, and controlling the On/Off of the laser according to the internal temperature of the foam molding machine, it is possible to obtain an effect of minimizing the occurrence of defects due to overheating.

Figure 1 is a schematic view showing the whole of the container flooring manufacturing apparatus according to the present invention.
Figure 2 is an exemplary view showing an extruder and cooling means according to the present invention.
Figure 3 is an exemplary view showing a filling means according to the present invention.
Figure 4 is a state diagram showing an operating state of the filling means according to the present invention.
Figure 5 is an exemplary view showing a cutting cutter and an elastic support according to the present invention.
6 is a state diagram showing the operating state of the cutting cutter according to the present invention.
Figure 7 is a state diagram showing the operating state of the elastic support according to the present invention.
Figure 8 is an exemplary view showing an elastic support according to the present invention.

Hereinafter, other objects and features of the present invention in addition to the above objects will be clearly revealed through the description of the embodiments with reference to the accompanying drawings.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

Hereinafter, with reference to the accompanying drawings to describe a preferred embodiment of the resin composition for flooring of a container according to the present invention and a manufacturing apparatus for flooring of a container using the same.

First, the resin composition (PE) for flooring of a container according to the present invention,

Low-density polyethylene (LDPE) with a melt index of 0.5g/10min or more and a density of 0.910~0.914g/cm3 and

It is characterized by mixing high-density polyethylene (HDPE) having a melt index of 0.5g/10min or more and a density of 0.958 to 0.960g/cm3 in a weight ratio of 1:5 to 1:10.

The low-density polyethylene, as described above, has excellent workability because of its low density, and high-density polyethylene has excellent impact resistance, and as a result of various experiments, it has excellent workability when molding the flooring material using the manufacturing apparatus according to the present invention. It was found that the impact resistance of the manufactured flooring material also exhibited the same degree of physical properties as that of the commercially available container flooring material.

In particular, in the combination of the low-density polyethylene and the high-density polyethylene, it was found that processability was greatly improved by blending polyethylene having the above-described physical properties.

In the resin composition, when the content of the low-density polyethylene is too small by varying the ratio of the low-density polyethylene and the high-density polyethylene, the fluidity may decrease during the extrusion process, resulting in a problem of increasing the defect rate of the product, and the content of the low-density polyethylene. When this amount is too large, the impact resistance of the manufactured flooring material was decreased, and it was found that the physical properties were decreased compared to the flooring material of a commercially available container.

A floor material was prepared through the manufacturing apparatus according to the present invention while varying the contents of the low-density polyethylene and the high-density polyethylene of the resin composition, and the physical properties thereof were tested and evaluated to obtain the results shown in Table 1 below.

In Table 1, the flexural modulus was measured according to ASTM-D 790, and the Izod impact strength was measured according to ASTM-D 256.

HDPE (parts by weight) LDPE (parts by weight) Flexural modulus (MPa) Izod(-20℃,J/m) Psalm 1 8 One 840 17.0 Psalm 2 6 One 760 14.0 Psalm 3 5 One 630 9.6 Psalm 4 3 One 620 - Psalm 5 One One 650 -

Looking at the results of Table 1, in the case of specimens 3 to 5 out of the blending ratio according to the present invention, it was confirmed that the flexural modulus and the Izod value were rapidly reduced, thereby deteriorating ductility and impact resistance.

In addition, as a result of molding by applying recycled polyethylene to the manufacturing apparatus of the present invention, the flexural modulus was 770 MPa and Izod was 16.5, which showed good physical properties. It was found that the defective rate was significantly increased compared to 0.002%. This was found to be due to insufficient processability of the resin composition when applying the manufacturing apparatus of the present invention.

The resin composition of the present invention made as described above has excellent processability by blending low-density polyethylene and high-density polyethylene in a weight ratio of 1:5 to 1:10, but especially when applied to the manufacturing apparatus according to the present invention, it has excellent processability and a defect rate is existing. It is significantly lower than the floor material of a commercially available container, and has excellent impact resistance, so that damage caused by the load pressure of the cargo placed above it can be minimized while installed on the bottom of the container.

In addition, it is easy to clean and sterilize after use, which means that the floor material made of the resin composition according to the present invention is light in weight and is easy to transport.Through this, it is easy to clean, dry, and sterilize after being separated from the bottom of the container. It has one advantage.

In addition, since there is no change in physical properties during drying, it can be reused, so it has the advantage of high economic efficiency.

Next, in the apparatus 1 for manufacturing a floor material of a container using the resin composition according to the present invention, as shown in FIG. 1, a hopper 21 to which a raw material is supplied at a constant speed is disposed on the upper side and a screw that generates high heat inside. An extruder 20 equipped with a cage to move while mixing and melting the raw material supplied through a hopper, and foaming the raw material to fill a flat shell plate with a resin composition in the hollow of the shell plate to form an extruded product, and the extruder The extruded product (F) molded through is molded while being pressurized and then cured through a water-cooled cooling means (30).

The extruder 20 is further provided with a filling means 10 for filling a resin composition for flooring into a hollow flat plate formed by foaming raw materials,

The filling means 10,

A housing 11 having a hollow cylindrical shape and an outlet 111 through which the resin composition for flooring is discharged,

A partition plate 12 made of a material having an elastic restoring force while partitioning the interior of the housing 11,

A light-transmitting lens 13 disposed on the upper end of the housing 11,

A pressure-generating liquid 14 that is stored relatively above the space partitioned through the partition plate 12,

It includes a supply pipe 15 for supplying the resin composition for flooring to a relatively lower portion of the space partitioned through the partition plate 12.

Here, the housing 11 is a pressure partition wall 112 surrounding the side to form an upper portion in which the pressure generating liquid 14 is stored, and a liquid partition wall surrounding the side surface to form a lower portion in which the resin composition (PE) is stored. It may be composed of two powders having 113, and the partition plate 12 is disposed between the two powders.

The partition plate 12 is made of a material having an elastic restoring force and transmits the pressure acting on the space filled with the pressure generating liquid 14 to the lower space in which the resin composition is stored. These partition plates can be made of silicone rubber or the like. In addition, it is preferable to reinforce the edge and the center portion of the partition plate because there is a possibility that the edge and the center portion may be damaged first due to rapid expansion during pressure transmission. That is, an example of a film formed of the partition plate made of an elastic material is shown, but the present invention is not limited thereto, and the pressure acting on the space filled with the pressure generating liquid, such as the plate-shaped disk being configured to move up and down If it can be delivered downwards, various implementations are possible.

The light-transmitting lens 13 is formed of a convex lens and is disposed above the housing 11 to irradiate the energy emitted from the energy concentrating device 17 such as a laser or microwave with a pressure generating liquid 14. .

Such a floodlight lens has shown an example in which a part of the upper side of the housing is blocked, but the present invention is not limited thereto. If the floodlight lens is a flat type, a concave type, etc., if it is possible to transmit light, various types of applications are possible. Of course, it is also possible to block the entire upper side of.

As the pressure generating liquid 14, general water may be used, and various liquid substances such as a polymer sol and gel such as alcohol or polyethylene glycol may be used. In addition, as the pressure generating liquid, it is preferable to use a degassed liquid to minimize residual bubbles when generating bubbles. In addition, when an electrolyte (salt, etc.) is added to pure water as a pressure generating liquid, the molecules are ionized and the energy required for the breakdown of the molecular structure of the liquid is reduced, and thus bubbles can be formed with better efficiency, which is more preferable.

When the energy emitted from the energy concentrator 17 is irradiated through the light-transmitting lens 13, the pressure-generating liquid 14 presses the partition plate 12 and the bubbles generated as the molecular structure collapses. The resin composition located under the silver is discharged downward through the outlet 111 of the housing 11 to penetrate into the hollow of the flat body.

The resin composition supply pipe 15 is connected to a pump operated by an applied power source and a signal to deliver the pumped resin composition to the housing.

At this time, the resin composition supply pipe 15 is preferably further provided with an on-off valve 151 for controlling the flow of the resin composition to move, more preferably the on-off valve 151 is the internal temperature of the extruder , It is configured to be opened or closed according to a predetermined temperature required to fill the resin composition.

This means that when the internal temperature of the extruder exceeds a preset reference value or range, the opening/closing valve 151 is closed and displayed to the outside through notification means such as speakers and lights, and the extruder is stopped at the same time, causing defects in manufacturing. There is an effect that can be minimized.

The opening or closing of the on/off valve, the temperature detection of the extruder that determines it, the storage of the reference value for comparison with the sensed temperature value, and the operation operation are controlled through a control unit (not shown in the drawing).

On the other hand, in the housing 11,

A circular inlet 161 opened at the upper side is formed, and the cross section gradually narrows from circular to linear toward the lower side, and a slit 162 through which the resin composition is discharged is formed at the lower end, so that the resin composition is discharged from the outlet 111 A backflow prevention device 16 is further provided to guide the movement to only the) side.

The backflow prevention port 16 allows the flow of fluid (liquid, gas, etc.) to flow in only one direction, and a part or the entire shape may be formed in a shape of a duck's beak or a closed shape like a flute spout.

In addition, the backflow prevention port 16 allows the resin composition filled in the housing 11 to be sprayed to the outside through the outlet 111, but prevents external air from entering through the outlet to prevent external air, etc. By preventing mixing with the resin composition filled in the housing 11, contamination of the resin composition can be prevented.

In addition, the backflow prevention port 16 may be a linear shape in which the slit 162 is closed, and various shapes such as a straight line, a curved line, or an intersecting line may be applied.

On the other hand, the energy concentrating device 17 is disposed above the housing to concentrate energy toward a specific point in the enclosed space by being filled with a pressure generating liquid. As described above, energy is concentrated using microwaves, lasers, etc. It consists of a device that can focus.

That is, the energy concentrator 17 pushes the partition plate downwards by concentrating energy such as a laser to the pressure generating liquid to instantaneous volume expansion (pressure increase) due to evaporation of the pressure generating liquid and the transmission of shock waves. , This causes the resin composition to be discharged to the outside through the discharge port.

On the other hand, the compression portion 40 for pressing the extruded product,

Pressing plates 41 arranged side by side at regular intervals from each other,

An elevation cylinder 42 that operates by the applied power and signal, and the end of the rod 421 entering and exiting is coupled to the pressing plate 41 to elevate it,

A base plate 43 disposed in a direction opposite to the pressing plate 41,

A cutting cutter 44 for cutting both edges in the width direction of the extruded product compressed by the pressing plate 41,

It includes an elastic support 45 for elastically supporting the cutting cutter 44 to the side of the extrusion.

The compression plate 41 has a predetermined thickness and extends in the longitudinal direction, is made of a metal material having strong heat resistance and abrasion resistance, and has a flat bottom surface in contact with the extruded product (F).

A plurality of these pressing plates 41 are arranged side by side at a predetermined distance from each other, and the distance and number of the pressing plates 41 may be changed according to the foam thickness of the raw material constituting the extruded product, the resin composition or the extruded product.

The lifting cylinder 42 is driven by an applied power source and a signal, and a rod 421 entering and leaving the body is provided, and an end of the rod 421 is coupled to a pressing plate 41 to lift it.

At this time, a plurality of the lifting cylinders 42 are arranged at a distance from each other on one pressing plate 41, and as shown in the drawing, a pair is arranged on both sides of the compression plate 41 in the longitudinal direction. Although shown, the number and arrangement interval may be changed according to the self-load of the pressing plate 41 or the pressing force to be formed through the pressing plate.

The base plate 43 is to support it from the lower side when the compression plate 41 descends and compresses the extruded product, and is formed in a flat plate shape and is disposed at a position opposite to the compression plate 41. As shown in the drawing, the compression plate 41 is disposed above and the base plate 43 is disposed below the extrusion molded product.

At this time, the base plate 43 is preferably made of a metal material having high heat resistance and abrasion resistance, and the top surface in contact with the extruded product is made in the form of a flat plate, but the shape of the top surface may be changed according to the external shape of the extruded product.

The cutting cutter 44 is for cutting a portion protruding from both ends of the extruded product compressed by the pressing plate 41 in the width direction, and is detachably coupled to the fixing flange 441 Are arranged in the width direction of each.

The fixing flange 441 is configured by combining a plurality of walls, and the end portion in the direction in which the extruded product enters is opened, and the cutting cutter 44 is disposed at the opened end.

At this time, a coupling bolt 443 for coupling the fixing flange 441 and the cutting cutter 44 is further disposed, and the coupling bolt 443 is in a long hole 442 formed in the fixing flange 441 It is inserted through and disposed in a state in which separation is prevented through the coupling nut 444.

Here, one end of the coupling bolt 443 is coupled to the cutting cutter 44 and the other end is fixed by engaging the coupling nut 444, and the portion inserted through the long hole 442 is a long hole 442 ) To be movable along the way.

The cutting cutter 44 cuts a portion protruding outward from an edge in the width direction of the extruded product during the pressing process to arrange the edge of the extruded product. As shown, the cutting cutter 44 is provided on both sides of the extruded product in the width direction, which is moved by a drawer (not shown) or a transfer belt (not shown) after pressing, and is formed at one end of a metal material to A metal cutter molded by may be used, and as another example, a heating wire heated through an applied power source and a signal may be implemented in a form disposed on a metal body.

Here, in the example of using a cutting cutter using a hot wire, a sensing and a control unit for applying power to the hot wire and sensing and controlling the temperature of the hot wire may be further included.

The elastic support 45 elastically supports the cutting cutter 44 toward the extruded product, and the thickness of the portion protruding from the side of the extruded product is not constant in the process of cutting the side of the extruded product by the cutting cutter. There is a problem that the cutting cutter is pushed out by the moving extruded product, and when the position of the cutting cutter is moved, the side of the extruded product is not cut uniformly, so separate cutting and inspection work are required.

Therefore, keeping the position of the cutting cutter constant is a very important factor in improving the quality of the extrusion molding.

In the present invention, when the cutting cutter 44 is pushed to the side of the extruded product by pressing the cutting cutter 44 through the elastic support 45 to the side of the extruded product, it is immediately pressed back to the extruded product so that the position can be maintained.

Such an elastic support 45,

A pair of elastic adjustment pieces 451 that are inserted through the holes formed in the fixing flange 441 and are arranged side by side at a position spaced apart from each other, and each adjustment hole 452 is formed,

An elastic adjustment bolt 453 which is inserted so as to engage each of the pair of adjustment holes 452 so as to narrow or widen the gap between the elastic adjustment pieces 451 according to the rotation direction,

A nut 454 fixedly disposed in any one of the adjustment holes 452 to engage the elastic adjustment bolt 453,

It includes an elastic piece 455 that connects the elastic adjustment piece 451 and protrudes toward the outside so that an end portion thereof contacts the outer surface of the cutting cutter 44.

The elastic support 45 is formed in a hemispherical shape with one side open as a whole, and both ends of the opened one side extend in the length direction, respectively, and an elastic adjustment bolt engaged with the adjustment hole 452 formed in the elastic adjustment piece 451 By rotating the 453 to narrow or widen the gap between the pair of elastic adjustment pieces 451, the curvature of the elastic pieces 455 is changed to adjust the elastic force.

Meanwhile, the position of the cutting cutter 44 can be adjusted by adjusting the elastic force of the elastic support 45.

That is, as described above, the cutting cutter 44 cuts unnecessary portions in a state in contact with the edge of the extrusion molding by the elastic support 45, where the position of the cutting cutter 44 is adjusted according to the width of the unnecessary portions. By doing so, it is possible to control the width of the extruded product.

And, as shown in Figure 8, the elastic piece 455 is further provided with a buffer pad 456 made of a soft material having elastic resilience, such as rubber, urethane, silicone, etc. to damage the outer surface of the cutting cutter 44 in contact. Do not.

Next, the cooling means 30 is for cooling by discharging cooling water to the extrusion molding being compressed,

It is disposed above the compression plate 41 for pressing the extruded product,

A discharge unit 31 including a nozzle 311 for discharging the coolant pumped and transported from the coolant storage tank 312 to the extruded product and the cutting cutter 44,

A debris collection module 32 for collecting debris of the extruded product cut through the cutting cutter 44 in order to collect and recycle the cooling water used to cool the extruded product is further included.

The configuration and operation relationship of the cooling water storage tank 312 constituting the cooling means 30 and the discharge unit 31 including the nozzle 311,

The coolant stored in the coolant storage tank 312 is pumped through a pump, the pumped coolant is transferred through a pipe connecting the coolant storage tank and the nozzle 311, and the transferred coolant is transferred to the extrusion through the nozzle 311. It is discharged to cool the extruded product and the pressing plate 41.

Here, the internal structures of the cooling water storage tank 312, the nozzle 311, the pump, and the pipe are known, and thus detailed descriptions and illustrations will be omitted.

In the present invention, since the cutting cutter 44 cuts unnecessary portions from the edges of the extrusion molding, in order to recycle the used cooling water, the cut portions, that is, fragments, must be separately collected.

To this end, the fragment collection module 32 is further provided,

The fragment collection module 32,

A body 321 disposed below the cutting cutter 44 and having an upper end and a lower end open respectively and having an outlet 322 for discharging the collected debris at one end in the longitudinal direction;

A transfer belt 323 disposed at the bottom of the opening of the body 321, formed in a porous mesh shape to pass through the cooling water discharged from the nozzle 311, and moved in engagement with a driving motor operated by an applied power source and a signal. )Wow,

A plurality of pieces are disposed on the outer surface of the transfer belt 323 at regular intervals to prevent the collected debris from directly contacting the outer surface of the transfer belt 323, and a protruding piece 324 for preventing adsorption.

The body 321 is formed by combining a plurality of plate materials, the upper end is opened so that the fragments cut by the cutting cutter 44 are introduced, and an outlet 322 for discharging the fragments introduced at one end in the length direction. ) Is formed.

At this time, it is preferable that the body 321 is formed to have a relatively large width compared to the width of the transfer belt 323 so that the upper portion of the transfer belt 323 is disposed between a pair of plates. 3, see enlarged original draft)

This does not interfere with the movement of the transfer belt 323 and furthermore, the body prevents the coolant falling from the top from coming into contact with the transfer belt and splashing outward, thereby maintaining a clean environment.

The transfer belt 323 disposed at the opened lower end of the body 321 is formed in a porous mesh shape so that only the cooling water passes downward from the cooling water introduced with debris, and is disposed on one side by the applied power and signal. It meshes with the driving motor in motion.

In addition, a tension maintaining roller 325 is provided in a direction opposite to the position in which the driving motor is disposed so that the conveying belt 323 moves while maintaining tension, and the upper and the upper part of the conveying belt 323 made of an endless type A guide plate for guiding the cooling water passing through the upper portion between the lower portions, that is, the upper portion, to the cooling water storage tank 312 may be further provided.

The adsorption-preventing protrusions 324 are arranged on the outer surface of the transfer belt 323 to minimize the surface of the fragment cut by the cutting cutter 44 in contact with the transfer belt 323.

This is for smooth movement of the coolant by closing the hole formed in the conveying belt by contacting the cut debris with the conveying belt 323.

In addition, the protrusion piece 324 is formed in a hemispherical shape protruding upward and extends along the width direction of the transfer belt to make point contact with the debris, so that the debris remaining heat generated during compression is In order not to stick to the 324, the cooling water can move through the space between the fragments and the protruding pieces 324, so that the movement efficiency of the cooling water can be improved.

As described above, in the present invention, specific matters such as specific components, etc., and limited embodiments and drawings have been described, but this is provided only to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , If a person of ordinary skill in the field to which the present invention belongs, various modifications and variations are possible from these descriptions.

Therefore, the spirit of the present invention is limited to the described embodiments and should not be defined, and all things equivalent or equivalent to the claims as well as the claims to be described later belong to the scope of the spirit of the present invention. .

PE: Resin composition for container flooring
1: Container flooring manufacturing device
10: filling means
11: housing 12: partition plate
13: light-transmitting lens 14: pressure generating liquid
15: resin composition supply pipe 16: backflow prevention port
17: energy concentrator 18: resin composition storage tank
161: circular inlet 162: slit
20: extruder
21: Hopper
30: cooling means
31: discharge unit 32: debris collection module
311: nozzle 312: cooling water storage tank
321: body 322: exit
323: transfer belt 324: protruding piece for preventing adsorption
325: Tension maintenance roller
40: crimping part
41: compression plate 42: lifting cylinder
43: base plate 44: cutting cutter
45: elastic support
441: fixing flange 442: long hole
443: coupling bolt 444: coupling nut
451: elastic adjustment piece 452: adjustment hole
453: elastic adjustment bolt 454: nut
455: elastic piece 456: buffer pad

Claims (6)

delete The raw material introduced through the hopper is foamed in a screw cage generating high heat to form a plate-shaped outer plate, and low-density polyethylene having a melt index of 0.5 g/10 min or more and a density of 0.910 to 0.914 g/cm 3 in the hollow of the outer plate ( LDPE) and high-density polyethylene (HDPE) with a melt index of 0.5g/10min or more and a density of 0.958 to 0.960g/cm3 in a weight ratio of 1:5 to 1:10 to fill a resin composition (PE) for flooring And an extruder for molding the extruded product, a compression unit for pressing and shaping the extruded product formed through the extruder, and curing the compressed extruded product through water cooling cooling means,
The extruder 20 is further provided with a filling means 10 for filling the resin composition (PE) for flooring into a hollow flat plate formed by foaming raw materials,
The filling means 10,
A housing 11 having an empty cylindrical shape and having an outlet 111 through which the resin composition (PE) for flooring is discharged,
A partition plate 12 made of a material having an elastic restoring force while partitioning the interior of the housing 11,
A light-transmitting lens 13 disposed on the upper end of the housing 11,
A pressure-generating liquid 14 stored in a relatively upper portion of the space partitioned through the partition plate 12,
It includes a supply pipe 15 for supplying the resin composition (PE) for the flooring material to a relatively lower portion of the space partitioned through the partition plate 12,
In the housing 11,
A circular inlet 161 opened at the upper side is formed, and the cross section gradually narrows from circular to linear toward the lower side, and a slit 162 through which the resin composition for flooring (PE) is discharged is formed at the lower end, and the flooring material Floor material manufacturing apparatus for a container, characterized in that further provided with a backflow prevention port 16 for guiding the resin composition (PE) to be movable only toward the outlet 111.
delete The method of claim 2, wherein the pressing portion 40 for pressing the extruded product,
Pressing plates 41 arranged side by side at regular intervals from each other,
An elevation cylinder 42 that operates by the applied power and signal, and the end of the rod 421 entering and exiting is coupled to the pressing plate 41 to elevate it,
A base plate 43 disposed in a direction opposite to the pressing plate 41,
A cutting cutter 44 for cutting both edges in the width direction of the extruded product compressed by the pressing plate 41,
And an elastic support (45) for elastically supporting the cutting cutter (44) toward the extruded product.
The method of claim 4, wherein the elastic support (45),
Both ends are arranged side by side at a mutually spaced position, and the elastic adjustment piece 451 having a perforated adjustment hole 452 formed in each,
An elastic adjustment bolt 453 which is inserted so as to engage each of the pair of adjustment holes 452 to narrow or widen the gap of the elastic adjustment piece 451 according to the rotation direction,
A nut 454 fixedly disposed in any one of the adjustment holes 452 to engage the elastic adjustment bolt 453,
And an elastic piece (455) that connects the elastic adjustment piece (451) and protrudes toward the outside so that an end portion thereof contacts the outer surface of the cutting cutter (44).
The method of claim 2, wherein the cooling means (30),
It is disposed above the compression plate 41 for pressing the extruded product,
A discharge unit 31 including a nozzle 311 for discharging the coolant pumped and transferred from the coolant storage tank 312 to the extruded product and the cutting cutter 44,
In order to collect and recycle the cooling water used to cool the extruded product, a debris collection module 32 for collecting the debris of the extruded product cut through the cutting cutter 44 is further provided. Device.

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