KR101925138B1 - Plastic product manufacturing device - Google Patents

Abstract

The present invention relates to an apparatus for manufacturing a plastic molded article, which is capable of lowering a defect rate of a plastic molded article. The apparatus comprises: a storage module supplying a plastic raw material to the outside; an extracting module extracting the plastic raw material; at least one raw material mixing module receiving and mixing the plastic raw material; a thickness processing module processing the extracted molded article into a set thickness; and a cutting module cutting the molded article by a predetermined width.

Description

Technical Field [0001] The present invention relates to a plastic product manufacturing device,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for manufacturing a plastic molded article, and more particularly, to an apparatus for manufacturing a plastic molded article capable of reducing a defective rate of the produced plastic molded article.

In general, synthetic resins such as plastics are indispensable in modern life, and are being used for a variety of purposes such as daily necessities and architectural use. Specifically, it is widely used not only for food containers widely used in everyday life but also for construction materials, machine parts, lighting covers, sign boards, trays, pallets, automobile parts, and aerospace equipment.

Such a plastic synthetic resin is first formed in a sheet form at a factory and supplied to a secondary processing plant. In a secondary processing plant, the supplied plastic sheet is processed to manufacture other types of articles, or a separate printing It is also used in sheet or board form through processes.

The process of producing the conventional plastic sheet will be briefly described. After mixing the raw materials of the plastic sheet, the mixed raw materials are melted, processed to have a predetermined thickness and width, and then cooled in a separate place And then cooled and stored.

However, in the process of producing a conventional plastic sheet, oxygen removal and dehumidification are not smoothly carried out, and bubbles are generated in the finally produced plastic sheet, or the defective rate of the plastic sheet is high.

On the other hand, a conventional technique for manufacturing a plastic sheet is described in Korean Patent No. 10-1178267.

In order to solve the above-described problems, it is an object of the present invention to provide an apparatus for producing a plastic molding which reduces gas carbonization and color discoloration of a plastic molding to be manufactured.

It is another object of the present invention to provide an apparatus for manufacturing a plastic molding which reduces volatile gas generation.

It is another object of the present invention to provide an apparatus for producing a plastic molding which reduces erosion of a screw.

     A plastic molding production apparatus includes a storage module including a space for storing the plastic raw material and supplying the stored plastic raw material to the outside; An extraction module for heating the plastic raw material and extracting the heated plastic raw material; Wherein the storage module further comprises a first gas inlet flow path for introducing a nitrogen mixture into the storage module, wherein the raw material mixing module further comprises a second gas inlet flow path for introducing a nitrogen mixture into the raw material mixing module, And the nitrogen gas ratio of the nitrogen mixture flowing through the first gas inlet flow path is lower than the nitrogen gas ratio of the nitrogen mixture flowing through the second gas inlet flow path.

    The apparatus for manufacturing a plastic molding further comprises at least one raw material mixing module for supplying and mixing the plastic raw material from the storage module; A thickness machining module for machining the formed product extracted from the extraction module to a predetermined thickness; And a cutting module for cutting the molded article having the thickness adjusted from the thickness modifying module to a predetermined width, wherein the extracting module is configured to heat the plastic raw material supplied from the at least one raw material mixing module, The extraction module extracts a plastic raw material, and the extraction module includes an extraction module case forming an internal space and having a main supply part and an auxiliary supply part; An extraction unit provided in the extraction module case and forming a predetermined thickness of the plastic raw material mixture supplied into the extraction module case and extracting the plastic raw material mixture to the outside; A heating heater unit for raising an internal space temperature of the extraction module case to make the plastic raw material mixture molten; And a piston and a cylinder for pressurizing the plastic raw material mixture provided in the inner space of the extraction module case to be extracted to the extraction part, wherein the nitrogen gas ratio of the nitrogen mixture flowing through the first gas inlet flow path is 97 %, And the nitrogen gas ratio of the nitrogen mixture flowing through the second gas inlet flow path is 99% or more.

According to an aspect of the present invention, there is provided a storage module comprising: a storage module including a space for storing a plastic raw material and supplying the plastic raw material to the outside; At least one raw material mixing module for supplying and mixing the plastic raw material from the storage module; An extraction module for heating the plastic raw material supplied from the at least one raw material mixing module and for extracting the heated plastic raw material; A thickness machining module for machining the formed product extracted from the extraction module to a predetermined thickness; And a cutting module for cutting the shaped article having the thickness adjusted from the thickness modifying module to a predetermined width, wherein the storing module further includes a first gas inflow passage for introducing the nitrogen mixture into the storing module, The raw material mixing module further includes a second gas inflow passage for introducing a nitrogen mixture into the raw material mixing module, and a nitrogen gas ratio of the nitrogen mixture flowing through the first gas inflow passage is larger than a ratio of nitrogen gas introduced through the second gas inflow passage The nitrogen gas ratio of the nitrogen mixture is lower than the nitrogen gas ratio of the nitrogen mixture, and the gas molding and color discoloration of the plastic molding to be produced is reduced to improve the quality.

According to an embodiment of the present invention, the extraction module includes an extraction module case having an inner space and including a main supply part and an auxiliary supply part; An extraction unit provided in the extraction module case and forming a predetermined thickness of the plastic raw material mixture supplied into the extraction module case and extracting the plastic raw material mixture to the outside; A heating heater unit for raising an internal space temperature of the extraction module case to make the plastic raw material mixture molten; And a piston and a cylinder for pressurizing the plastic raw material mixture provided in the inner space of the extraction module case to be extracted to the extraction part, wherein the nitrogen gas ratio of the nitrogen mixture flowing through the first gas inlet flow path is 97 And a ratio of nitrogen gas in the nitrogen mixture flowing through the second gas inflow passage is 99% or more. The apparatus for producing a plastic molded article is characterized in that the generation of volatile gas is reduced, The generation of holes is reduced, the surface roughness of the plastic molding to be manufactured is increased, and the life of the molding device for plastic molding is increased.

One embodiment of the present invention has the effect of reducing gas carbonization and color discoloration of a plastic molding to be produced, and manufacturing a plastic molding having a high transmittance.

In addition, one embodiment of the present invention has the effect of reducing the generation of volatile gas and enhancing the quality of the plastic molded article compared with the conventional art.

In addition, one embodiment of the present invention has an effect that the generation of fine holes on the surface of a plastic molding to be produced is reduced and the surface roughness is increased.

In addition, one embodiment of the present invention has an effect of reducing the erosion of screws and increasing the life of the apparatus for manufacturing a plastic molded article.

FIG. 1 is a schematic view illustrating the arrangement of major components constituting the apparatus for manufacturing a plastic molding according to an embodiment of the present invention.
FIG. 2 schematically shows the structure of the discharging portion of the mixing case in FIG.
3 is a partial cross-sectional view of the hot air supply pipe of FIG.
4 is a schematic view of a cutting module applied to an apparatus for manufacturing a plastic molding according to an embodiment of the present invention.
Figure 5 is an exploded view of one side of the cutting module in Figure 4;
6 is a perspective view of a cooling module applied to an apparatus for manufacturing a plastic molding according to an embodiment of the present invention.
FIG. 7 is a schematic view of a re-transfer module applied to an apparatus for manufacturing a plastic molding according to an embodiment of the present invention.
FIG. 8 is an enlarged view of a surface of a molded product manufactured through the apparatus for manufacturing a plastic molded product according to an embodiment of the present invention and a surface of a conventional molded product by a microscope.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the meantime, the structure of the apparatus described below is only for explaining the embodiment of the present invention, and is not intended to limit the scope of the present invention, and the same reference numerals used throughout the specification denote like elements.

FIG. 1 is a schematic view illustrating the arrangement of major components constituting the apparatus for manufacturing a plastic molding according to an embodiment of the present invention.

The apparatus 100 for manufacturing a plastic molding according to an exemplary embodiment of the present invention includes a material mixing module 110, 210 and 310, storage modules 160, 260 and 360, an extraction module 120, A thickness processing module 130, a cutting module 140, a cooling module 150, and a control unit 180. [

Here, the raw material of the plastic molding is made of a material such as PE or PET in the form of, for example, small fragments or powder.

Meanwhile, the raw material compounding modules 110, 210, and 310 are configured such that the above-described raw materials for molding the plastic are charged and mixed.

As shown in the figure, one or more of the raw material mixing modules 110, 210, and 310 are connected to each other by a raw material supply pipe 80 so that the raw material mixed in the extraction module 120 is supplied .

In addition, the raw material mixed in the selected raw material compounding modules 110, 210, and 310 is injected into the extraction module 120 according to the circumstances, thereby preventing a shortage of raw materials.

In some cases, when different kinds of raw materials are mixed, the raw materials blended in each raw material blending module can be mixed in the raw material supply tube 80.

Acrylic and polycarbonate may be supplied in a random mixed state to the respective material combination modules 110, 210, and 310. The main raw material compounding module 110 may be supplied with acrylic and the remaining raw material formulating modules 210 and 310 may be supplied with polycarbonate.

Each of the raw material mixing modules 110, 210 and 310 has an outer space and an inner space and includes a mixing case 111 having supply parts 112, 212 and 312 and discharging parts 102, And mixing screws 113, 213, and 313 for mixing the raw materials, which are provided in the mixing cases 111, 211, and 311, respectively.

The mixing screws 113, 213 and 313 are connected to the rotating shafts of the driving motors 177, 277 and 377 provided outside the mixing cases 111, 211 and 311 so that the driving motors 177 and 277 The raw materials of the plastic sheets injected into the mixing cases 111, 211, and 311 are mixed with each other and then discharged to the discharging units 102, 202, and 302, respectively.

Some of the material mixing modules 210 and 310 of the plurality of material mixing modules are connected to the raw material supply pipe 80 by an on-off valve 90 so as to selectively supply the raw materials.

That is, when the raw material of the main raw material compounding module 110 is insufficient, the raw material in the remaining raw material compounding modules 210 and 310 is supplied to the extraction module 120 At this time, raw materials are supplied to the inside of the main raw material compounding module 110, and mixed and stored.

The raw material supply pipe (80) further includes a hot air supply pipe (116) for allowing the raw materials to move easily, and a description thereof will be described later.

The raw materials supplied to the respective raw material mixing modules 110, 210 and 310 are supplied from the respective storage modules 160, 260 and 360. Each of the storage modules 160, 260, and 360 may store the raw material in advance, and the required amount of the raw material may be supplied according to the setting of the user or automatically adjusted by the controller 180.

Each of the storage modules 160, 260, and 360 includes a storage module case 161, 261, and 361 having an external appearance and an internal space. The storage module cases 161, 261 and 361 are connected to the storage module inflow ports 162, 262 and 362 through which the plastic raw material can flow and the supply sections 112, 212 and 312 of the raw material mixing modules 110, A communicating storage module outlet is provided.

Each of the storage modules 160, 260 and 360 may be provided with a storage module screw (not shown) inside the storage module cases 161, 261, and 361. The storage module screw may mix the loaded raw materials .

The raw materials may be supplied into the respective storage module cases 161, 261, and 361 through the respective storage module inlets 162, 262, and 362 and may be supplied to the respective storage module cases 161, 261, and 361 The stored raw materials are supplied to the respective raw material compounding modules 110, 210 and 310.

Feed regulators 164, 264 and 364 are provided at the points where the respective storage module outlets and respective supplies 112, 212 and 312 are connected. The feed regulators 164, 264 and 364 may be controlled by the controller 180 or controlled by the user and may adjust the amount of raw material supplied to each batching module 110, 210,

In an embodiment of the present invention, the supply regulating devices 164, 264, and 364 correspond to a valve type, but any configuration may be used as long as the supply amount of the plastic raw material can be adjusted.

Each of the storage modules 160, 260 and 360 is provided with first gas inflow channels 163, 263 and 363 through which external gas flows into the storage modules 160, 260 and 360, 1 gas inflow passages 163, 263, and 363 are connected to outer surfaces of the storage module cases 161, 261, and 361, respectively.

In an embodiment of the present invention, the first gas inflow channels 163, 263, and 363 communicate with the lateral middle height of the storage module cases 161, 261, and 361, but are not limited thereto.

Each of the raw material mixing modules 110, 210 and 310 is provided with second gas inflow passages 117, 217 and 317 which are passages through which external gas flows into the respective raw material mixing modules 110, 210 and 310, The second gas inflow passages 117, 217 and 317 are connected to the mixing cases 111, 211 and 311, respectively.

The second gas inflow passages 117, 217 and 317 are connected to the peripheral portions of the respective supply portions 112, 212 and 312 and the second gas inflow passages 117, 217 and 317 are communicated with each other through the second gas inflow passages 117, 217 and 317, The mixed gas is uniformly mixed with the plastic raw material flowing through the supply units 112, 212, and 312 and the mixing screws 113, 213, and 313.

217, and 317 through the supply portions 112, 212, and 312, as soon as the plastic raw material flows into the second gas inflow passages 117, 217, and 317.

On the other hand, the positions of the second gas inlet channels 117, 217, and 317 connected to the mixing cases 111, 211, and 311 may be changed according to the discharge direction of the second gas inlet channel.

In an embodiment of the present invention, a nitrogen mixture may be introduced through the first gas inlet channels 163, 263, and 363 and the second gas inlet channels 117, 217, and 317.

More specifically, at least 90% of the nitrogen mixture flowing into the first gas inflow channels 163, 263, and 363 is composed of nitrogen gas, and the second gas inflow channel 163, The nitrogen mixture introduced into the exhaust gas passages 117, 217, and 317 may be composed of nitrogen gas at 95% or more.

In an embodiment of the present invention, preferably 97% of the nitrogen mixture flowing into the first gas inflow channels 163, 263 and 363 is composed of nitrogen gas and the remaining 3% is composed of oxygen gas or oxygen mixture. Further, 99.5% of the nitrogen mixture flowing into the second gas inlet flow paths 117, 217 and 317 is composed of nitrogen gas and the remaining 0.5% is composed of oxygen gas or oxygen mixture.

The probability that the plastic raw materials provided in the raw material compounding modules 110, 210 and 310 are closer to the heat source and come into contact with the surrounding gas by the rotation action of the mixing screws 113, 213, 260, and 360, respectively. Therefore, it is preferable that the nitrogen gas ratio of the mixed gas flowing into the material mixing modules 110, 210, 310 is higher than the nitrogen gas ratio of the mixed gas flowing into the storage modules 160, 260, 360.

The first gas inflow channels 163, 263, and 363 and the second gas inflow channels 117, 217, and 317 are connected to the nitrogen introducing unit and the nitrogen introducing unit corresponds to a commonly used device. It is omitted.

The nitrogen mixture flowing into the first gas inflow channels 163, 263 and 363 is supplied to each of the storage modules 160, 260 and 360 at a rate of 25 LPM (liter per minute), and is preferably supplied at 21 LPM.

The nitrogen mixture flowing into the second gas inflow channels 117, 217 and 317 is supplied to each of the raw material compounding modules 110, 210 and 310 at 8LPM (liter per minute) and 15LPM, and is preferably supplied at 12LPM.

In summary, the ratio of the nitrogen gas of the nitrogen mixture flowing into the first gas inlet channels 163, 263, and 363 is lower than the ratio of the nitrogen gas of the nitrogen mixture flowing into the second gas inlet channels 117, 217, and 317 .

The supply amount of the nitrogen mixture flowing into the first gas inflow channels 163, 263 and 363 per hour is higher than the supply amount of the nitrogen mixture flowing into the second gas inflow channels 117, 217 and 317 per hour. Since the mixing screws 113, 213 and 313 rotate within the raw material mixing modules 110, 210 and 310, the possibility that the plastic raw material and the mixed gas to be supplied are in contact with each other may be reduced, Respectively. Therefore, a larger amount of gas per hour is supplied to the inside of the storage module, so that the contact area with the gas supplied with the plastic raw material is widened.

In the case of the conventional plastic molded product manufacturing apparatus, oxidizing action occurs on raw materials and internal parts due to the oxygen gas existing in the storage modules 160, 260, 360 and the raw material compounding modules 110, 210, 310, The orientation of the glass fiber is irregular, and there is a problem that the quality of a plastic molding produced by deposition of volatile gases and carbonized foreign substances is lowered.

In particular, materials such as carbon, sulfur, and phosphorus, which are contained in trace amounts, are also a major cause of deterioration in the quality of a plastic molding to be produced.

Since the plastic molding is produced at a high temperature of about 200 DEG C or more over a long period of time, the plastic molding produced due to the oxidation and combustion of oxygen gas and other gases is smeared, surface roughness is lowered, or bubbles are generated.

Accordingly, in one embodiment of the present invention, the nitrogen gas mixture which is not soluble in water more than oxygen and does not help combustion of other gases as inert gas is stored in the storage modules 160, 260, 360 and the raw material mixture modules 110, 210 And 310, respectively. '

Even if the nitrogen mixture is supplied to the raw material compounding modules 110, 210, and 310 and the storage modules 160, 260, and 360, a failure occurs when the plastic raw material is heated at a high temperature for a long period of time. However, It falls significantly.

Specifically, regarding the degree of drooling, when the nitrogen mixture is introduced, the rate of drooling is 6.49 to 7.48 when the plastic raw material in the apparatus is heated at 260 to 290 DEG C for 40 to 60 minutes, , The rate of occurrence is 49.5 to 169.4, which is about 8 to 25 times higher than that of the submerged nitrogen mixture.

Regarding the degree of bubble generation, when a nitrogen mixture is injected, about 83 bubbles are generated when the plastic raw material is heated at 260 ° C. for 20 minutes, but in the conventional case, a large amount of bubbles do.

Also, as can be seen from FIG. 8, when measured by an electron microscope (SEM), the phenomenon of glass fiber collapsing to the surface is reduced and the surface is smoothed when a nitrogen mixture is introduced.

In summary, in the case of the apparatus for manufacturing a plastic molded article of the present invention in which a nitrogen mixture is injected, the quality of the produced plastic molded article can be remarkably increased.

Meanwhile, the extraction module 120 receives the plastic raw material supplied from the raw material mixing module 110, heats the plastic raw material, and extracts the heated plastic raw material into a sheet having a predetermined thickness.

The extraction module 120 includes an extraction module case 121 having an internal storage part and the extraction module case 121 is provided with a main supply part 122 and an auxiliary supply part 123.

The extraction module case 121 is provided with an extraction part 124 for extracting a mixture of plastic raw materials supplied to the inside into a predetermined thickness. The extraction part 124 has a predetermined slit shape.

Meanwhile, the extraction module case 121 is provided with a heating heater part 125 for raising the temperature in the internal space of the extraction module case 121 to keep the plastic raw material mixture in a molten state.

The extraction module case 121 is provided with a discharge module that pressurizes the raw material mixture in the internal space and discharges the mixture to the extraction part 124. The discharge module includes a cylinder 126 and a piston 127 That is, the piston 127 is configured to discharge the melted raw material mixture introduced into the extraction module case 121 into the extraction unit 124 as it presses the raw material mixture.

The thickness processing module 130 processes the sheet extracted from the extraction module 120 to a final sheet thickness to be manufactured.

To this end, the thickness modulating module 130 has two drum portions 131 and 132 spaced apart from each other by an upper portion and a lower portion, and a gap formed between the drum portions 131 and 132 is used as a thickness .

In this case, the upper and lower positions of the upper and lower drums 131 and 132 of the drum units 131 and 132 can be adjusted to vary the thickness of the sheet.

Next, the cutting module 140 cuts the thickness-adjusted sheet from the thickness modulating module 130 to a predetermined width.

The sheet 1 passed through the cutting module 140 is configured to be wound around a storage roller unit 190 after passing through a predetermined cooling module 150.

Hereinafter, each constitution of the plastic sheet producing apparatus according to the present embodiment will be described in detail with reference to the accompanying drawings.

FIG. 2 is a cross-sectional side view schematically showing a state in which a hot air supply pipe is installed in the raw material supply pipe in FIG. 1, and FIG. 3 is a perspective view of the hot air supply pipe applied in FIG.

As shown in FIG. 2, the discharge ports 102, 202, and 302 of the mixing cases 111, 211, and 311 are connected to the raw material supply pipe 80. In some areas of the raw material supply pipe 80, And a hot air supply pipe 116 for supplying the raw material mixed in the raw material supply pipe 80 to the extraction module 120 more easily.

The open end of the hot air supply pipe 116 is connected to the open end of the hot water supply pipe 116 through an open end of the hot water supply pipe 116, The hot air supply hose 117 is connected.

Also, as shown in the drawing, the hot air supply pipe 116 includes a hot air supply hole 118 which is inclined toward the direction in which the plastic sheet raw material is discharged.

The hot air supply hole 118 allows the raw material of the plastic sheet in the raw material supply pipe 80 having a narrow flow path to be melted in a predetermined manner and is discharged to the outside of the raw material supply pipe 80 more easily by a pressing force by hot air .

FIG. 4 is a plan view schematically showing a cutting module applied to an apparatus for manufacturing a plastic sheet according to an embodiment of the present invention, and FIG. 5 is an exploded perspective view schematically showing one side of the cutting module in FIG.

4 and 5, a cutting module 140 applied to the apparatus 100 for manufacturing a plastic sheet according to the present embodiment includes a cutting table portion 141, a cutting portion 141 disposed on the cutting table portion 141, And a module section.

The cutting module part includes a support rod part 142 installed across the cutting table part 141 at a position spaced a predetermined distance above the cutting table part 141, A main moving piece 143 and an auxiliary moving piece 145 which are disposed on both sides of the supporting rod 142 so as to be movable along the longitudinal direction of the supporting rod 142, and a cutting blade 146 disposed below the auxiliary moving piece 145, .

The main tongue piece 143 is provided with a moving groove part 144 such that the main tongue piece 143 is movable along the supporting rod part 142, The auxiliary moving piece 145 is moved to the moving groove portion 144 of the main moving piece 143 so that the main moving piece 143 can be easily moved along the supporting rod portion 142 in a state where the main moving piece 142 is inserted, The bolts 147 are coupled to each other in such a manner that they close each other.

In this case, it is a matter of course that the auxiliary moving piece 145 and the main body are fixed to the supporting rod 142 in a state where the same piece 143 is engaged.

Further, as shown in the figure, the support rod portion 142 is configured to facilitate the change of the width of the seat according to the situation by allowing the scale portion along the longitudinal direction to visually indicate the fixing position of the cutting module portion .

Although not shown in detail, the main rotor 143 is made of a magnet material, and the support rod 142 is made of iron so that the main rotor 143 can be fixed to the support rod 142 So as to be coupled with the auxiliary moving piece 145. In this case,

6 is a perspective view illustrating a cooling module applied to an apparatus for manufacturing a plastic sheet according to an embodiment of the present invention.

As shown in the figure, the cooling module 150 includes a cooling roller body 151 formed in a roller shape. The cooling roller body 151 has a central axis connected to a rotation axis of a separate motor unit 158, So that the cooling roller body 151 is rotated when the motor unit 158 is operated.

The cooling air passage unit 152 is provided with a plurality of cooling air passage units 152 formed to cross a plurality of surfaces of the cooling roller body unit 151. The cooling air passage unit 152 has cooling air supply holes As shown in the drawing, the cooling air supply hole 153 may be provided at a portion where the cooling air flow path portion 152 is crossed.

Further, it is more preferable that an indicator 154 to which a sion pigment is applied is provided along the periphery of the cooling air supply hole 153.

The instruction unit 154 changes colors according to the cooling air supplied through the cooling air supply holes 153, thereby indicating that the cooling air is smoothly supplied at a proper temperature.

1, the cooling roller body 151 is further provided with an air suction hole 155 in a body portion other than the cooling air passage portion 152. The air suction hole 155 is formed in the sheet 1 The cooling roller body 151 and the cooling roller body 151,

7 is a schematic view of a re-transfer module applied to a sheet manufacturing apparatus according to an embodiment of the present invention.

The re-conveying module 170 includes a shredding case 171 having an inlet 172 through which the remainder 2 of the sheet is introduced and a discharge portion 173 through which the remainder 2 introduced therein is discharged, And a crushing screw 174 rotatably installed inside the case 171 so that the remaining portion 2 of the sheet introduced into the inlet 172 is partially crushed and discharged to the discharge portion 173.

As shown in the figure, the pair of crushing screws 174 are in a state in which the pair of shafts 174 are staggered with each other in a state where the rotating shafts 175 are axially connected to the separate motor portion 176, 174 to a predetermined state by the crushing screw 174 so that the remaining part of the sheet is introduced into the auxiliary supply part 123 of the extraction module case 121.

Although not shown in detail, a hot air supply hose (not shown) for supplying hot air to the inside of the shredding case 171 is provided, so that the remaining portion of the shredded sheet is melted, The re-extraction process can be performed more easily.

The operation of the apparatus for manufacturing a plastic sheet according to an embodiment of the present invention will now be described.

The raw material of the plastic sheet is put into the mixing case 111 through the supply part 112 of the mixing case 111 and then the mixing screw 113 is rotated so that the raw material of the plastic sheet is fed into the mixing case 111 And is discharged to the raw material supply pipe 80 through the discharge portion 102.

At this time, it is possible to cause the sheet raw material in the mixed case 211, 311 to be discharged to the raw material supply pipe 80 according to circumstances, as described above.

The high pressure hot air is supplied to the main supply part 122 side of the extraction module case 121 through the hot air supply hole 118 of the hot air supply pipe 116 provided inside the raw material supply pipe 80, The temperature of the inside of the extraction module case 121 can be increased quickly, and a part of the raw material can be melted.

After the raw material of the plastic sheet is moved into the extraction module case 121, the raw material of the plastic sheet is transferred to the extraction module case 121 through the extraction part 124 using the piston 127 and the cylinder 126 inside the extraction module case 121, Thereby extracting the sheet fabric.

Although not shown in detail, the extracting unit 124 is configured to be openable and closable, and reciprocates the piston 127 in a state of being closed for a predetermined time so that the plastic sheet raw material introduced into the extraction module case 121 A separate opening and closing door (not shown) may be applied to the extracting unit 124 to further enhance the mixing and melting state of the mixture.

The sheet material thus extracted has a shape corresponding to the thickness of the plastic sheet to be manufactured while passing through the thickness modifying module 130. The plastic sheet having the thickness desired to be manufactured through the thickness modifying module 130 The plastic sheet 1 having a width to be actually produced and the remaining sides 2 excluding the plastic sheet 1 are removed through the cutting module 140 again.

At this time, after the remainder 2 excluding the actually produced plastic sheet 1 is again conveyed to the auxiliary supply part 123 of the extraction module case 121 while passing through the re-conveying roller 129, Is mixed with the raw material of the plastic sheet supplied to the extruder (122) and re-extracted to the extruder (124).

Meanwhile, the remainder 2 transferred to the auxiliary supply unit 123 is in a state of being crushed by the crushing screw 174 of the re-transfer module 170, so that the raw material supplied to the main supply unit 122, The mixing efficiency can be increased.

The plastic sheet 1 produced by cutting the module 140 has a predetermined temperature.

To this end, the plastic sheet manufactured by cutting through the cutting module (140) is subjected to a process of cooling by passing through the cooling module (150) again.

6, the sheet 1 is brought into surface contact with the cooling roller body 151, and the sheet 1 is conveyed to the cooling roller body (not shown) by using the air suction hole 155. At this time, The cooling air supplied through the cooling air supply hole 153 flows smoothly throughout the cooling roller body 151 through the cooling air flow path portion 152, So that the cooling efficiency of the sheet can be increased.

The finished sheet is wrapped to the storage roller portion 190 by a predetermined length, thereby completing the entire manufacturing process of the plastic sheet.

As described above, according to the apparatus for manufacturing a plastic sheet according to an embodiment of the present invention, the entire process from the raw material mixing process to the sheet manufacturing, cooling, and storing processes is automatically performed, thereby increasing the manufacturing efficiency and shortening the manufacturing time It brings the advantage.

Further, it is possible to control the width of the sheet to be manufactured through the width adjustment of the both-side cutting edge portion constituting the cutting module.

Further, when the width of the sheet is adjusted, the cut portion is supplied again to the extraction module, thereby achieving the efficiency of the entire process and reducing the material cost.

On the other hand, the mixing screws 113, 213, and 313, the cylinder 126, the piston 127, the extraction unit 124, the cutting unit 140 and the drum unit 131 may be damaged by friction or impact. . Therefore, in the case of the surfaces of the structures, the plastic composition may be formed as follows.

The plastic composition according to one embodiment of the present invention includes polypropylene resin, high density polyethylene resin (HDPE), talc and germanium powder. The present invention relates to a plastic sheet capable of improving mechanical properties such as heat resistance and durability and capable of improving the twisting phenomenon and promoting metabolism by radiating far infrared rays and improving the storage stability of foods stored in the manufactured plastic container, (Product) can be produced.

Polypropylene resin is a thermoplastic resin which is obtained by polymerization of propylene and is known as an environmentally friendly material which is inexpensive in performance and does not have a risk of being in contact with the contents of foods or cosmetics. The polypropylene resin is excellent in chemical resistance, mechanical properties , And excellent in thermal properties. The polypropylene may use at least one selected from a propylene homopolymer, a random copolymer and a block copolymer, but a homopolymer and a random copolymer are mixed in a weight ratio of 3: 2 to improve mechanical properties .

High-density polyethylene (HDPE) resin is a synthetic resin produced by polymerizing ethylene, and has excellent flowability, rigidity, impact resistance, electrical insulation, moldability, and cold resistance. The high-density polyethylene resin may be mixed with the above-mentioned polypropylene resin to improve the moldability by reinforcing the tensile force in the production of the plastic sheet or the product, and a variety of known products may be used.

The talc improves the mechanical properties such as the strength and heat resistance of the plastic composition, and it is preferable to use a talc powder having a particle size of 150 to 200 mesh for mixing with polypropylene resin or the like. The talc may be used in admixture with other filler components, and may preferably be mixed with the dolomite powder at a weight ratio of 1: 1 to contribute to improvement of the durability of the plastic composition.

Germanium is a silvery white metal, which has the effect of promoting metabolism by emitting a large amount of far infrared rays and anions which are beneficial to the human body. Also, due to its semiconducting nature, germanium has a function of increasing the vitality of germanium ions (outer electrons) when they come into contact with the skin. When entering the body, it is released out of the body within 20 ~ 30 hours with various harmful substances, so there is no poisoning or side effects at all. Particularly, when the particles of inorganic germanium come into contact with human skin, semiconductor properties are introduced into the skin tissue by the osmotic action of the outer electron. It has been found that germanium, which penetrates into capillaries in subcutaneous tissues, moves electrons in the blood vessels through the blood vessel walls, performs blood purification, normalizes blood, and discharges excess electron flow to relieve pain. The germanium can be used in the form of powder. It is preferable that the germanium ore is finely cut to 3 cm or less and then the cut germanium ore is pulverized to a particle size of 80 to 100 mesh.

In one embodiment, the plastic composition preferably comprises 110 to 130 parts by weight of high density polyethylene resin, 170 to 190 parts by weight of talc, and 1 to 10 parts by weight of germanium powder per 100 parts by weight of the polypropylene resin. When the plastic sheet is produced by using the plastic composition, it is important to control the specific gravity of the plastic composition in order to eliminate the twisting phenomenon. The specific gravity is preferably 1.02 to 1.10, more preferably 1.03 to 1.05. That is, when the content of the high-density polyethylene resin is less than 110 parts by weight or the talc is less than 170 parts by weight based on 100 parts by weight of the polypropylene resin, mechanical properties such as durability and the like are limited. Is more than 130 parts by weight or the talc is more than 190 parts by weight, there is a possibility that the specific gravity of the plastic composition is increased and the moldability may be deteriorated. If the amount of the germanium powder is less than 1 part by weight with respect to 100 parts by weight of the polypropylene resin, far infrared rays emission effect due to germanium is difficult to manifest. If the amount is more than 10 parts by weight, .

In one embodiment, the plastic composition described above may comprise glass fiber reinforced plastic to enhance impact resistance. Fiberglass Reinforced Plastic (FRP) is a material made mainly of glass-based minerals and a combination of glass-based minerals with aromatic nylon fibers and thermosetting resins. The glass-based mineral may be at least one selected from the group consisting of silica sand, limestone, feldspar, and soda ash, but is not limited thereto. As the thermosetting resin, various known thermosetting resins can be used, and preferably, a polyester or an epoxy resin can be used. Glass fiber reinforced plastics can be produced by mixing materials such as glass-based minerals and putting them in a melting furnace. Each air layer sealed between the glass fibers functions as a heat insulating layer, so that it is excellent in nonflammability, sound absorption properties and workability. It is also stronger than iron, lighter than aluminum, and does not rust. Also, it is excellent in nonflammability and is not deformed by heat and is easy to be processed. At this time, it is preferable to add glue to improve the mixing property with glass fiber reinforced plastic (pellet type) and PVC. Glue is a substance that solidifies the liquid of organs such as animal's skin, intestines, bones, etc., and can solve the problems such as the release of environmental hormones while improving the binding force of each component. The glass fiber reinforced plastic and the glue are preferably contained in an amount of 15 to 25 parts by weight and 2 to 7 parts by weight based on 100 parts by weight of the polypropylene resin. If the amount is less than the above range, the impact resistance strengthening and embossing may be deteriorated, and if it exceeds the above range, a cracking phenomenon may occur during production of the product, which is uneconomical.

In one embodiment, a plastic composition may be used to contain cork powder to improve the elasticity of the product during its production. The cork powder can be prepared by removing the shell of oak oak and then crushing it. For the cork powder to be mixed with polypropylene resin or the like, it is preferable to use fine pulverized particles which are sieved through a mesh of 400 mesh or more. The cork powder is preferably contained in an amount of 5 to 10 parts by weight based on 100 parts by weight of the polypropylene resin. When the cork powder is less than 5 parts by weight, the degree of improvement of the elasticity is insignificant. When the cork powder is more than 10 parts by weight, voids formed in the inside of the product during manufacture may be increased and durability may be weakened.

In order to improve the mixing property of the cork powder and the other ingredients, sucrose (C ₁₂ H ₂₂ O ₁₁ ) powder may be further added. The sucrose not only smoothes the pores formed between the cork powder, but also tends to become viscous during the mixing process with the PVC, so that it can catch the molecules that cause the problem of bad odor, which can contribute to solving the problem of bad odor. The sucrose is preferably a powder that has been passed through a 500-mesh net, and is preferably contained in an amount of 1 to 4 parts by weight based on 100 parts by weight of the polypropylene resin. When sucrose is less than 1 part by weight, the effect expressed by sucrose is insignificant. When the amount of sucrose is more than 4 parts by weight, it is not only economical but also may weaken the mechanical properties of the product.

In one embodiment, the plastic composition may comprise a white powder. Potassium alum (potassium aluminum sulfate, AlK (SO ₄ ) ₂ .12H ₂ O) can be used as the alum, and can be obtained from natural alum. Concretely, it can be produced by dissolving alunculus in water and filtering it, then breaking it, and cooling it if irregularly shaped crystals are formed. It is preferable that the alum is contained in an amount of 2 to 5 parts by weight based on 100 parts by weight of the polypropylene resin. When the content of alum is less than 2 parts by weight, the effect by alum is insignificant, and when it is more than 5 parts by weight, it is uneconomical.

In one embodiment, the present invention may include Boehmite (AlO (OH) 2) to improve antibacterial properties. Boehmite can be any of γ-boehmite, α-boehmite and pseudo-boehmite. Of these, γ-boehmite excellent in crystallinity and excellent in thermal stability and chemical stability, structurally neutral, and excellent in antibacterial property is preferably used. The γ-boehmite can be prepared by supercritical synthesis of only water (pure water) and aluminum (Al). The boehmite is preferably contained in an amount of 3 to 8 parts by weight based on 100 parts by weight of the polypropylene resin. If the content of boehmite is less than 3 parts by weight, it is difficult to exhibit an antimicrobial effect to be achieved. If the content is more than 8 parts by weight, there is a fear that mixing property with other components is impaired.

Hereinafter, the structure and effects of the present invention will be described in more detail with reference to specific examples and comparative examples. However, this embodiment is intended to explain the present invention more specifically, and the scope of the present invention is not limited to these embodiments.

[Example 1]

180 kg of polypropylene resin, 200 kg of high density polyethylene resin (HDPE), 310 kg of talc and 15 kg of germanium powder were mixed to prepare a plastic composition.

[Example 2]

And 36 kg of glass fiber reinforced plastic and 9 kg of glue were further mixed to prepare a plastic composition.

[Example 3]

9 kg of cork powder, 5 kg of sucrose powder, 5 kg of white powder, and 9 kg of gamma-boehmite were further mixed to prepare a plastic composition.

[Comparative Example]

Was prepared in the same manner as in Example 1, except for talc, and this was used as a comparative example.

[Experimental Example 1: Evaluation of impact resistance]

Specimens (20 cm * 30 cm, thickness 20 mm) were prepared using the plastic compositions of the examples and comparative examples, and 3 kg of weight was dropped at a height of 2 m, and the degree of breakage of each specimen was measured. .

[Table 1]

As can be seen from the above Table 2, it was found that the embodiments including talc are superior in impact resistance to the comparative examples that do not include talc. In particular, in Examples 2 and 3 containing glass fiber reinforced plastics, the best results were obtained.

[Experimental Example 2: Evaluation of heat resistance]

The specimen of Experimental Example 1 was heated for 3 hours in a hot air circulating heating furnace maintained at 80 캜, and yellowing degree was visually observed. The results are shown in Table 3 below.

[Table 3]

As can be seen from the above Table 3, in the Examples, yellowing portions were hardly observed unlike the Comparative Examples. As a result, it was found that the heat resistance of the example was very excellent as compared with the comparative example.

[Experimental Example 3: Evaluation of antimicrobial activity]

The antibacterial activity test (JIS Z 2801) was carried out for Example 1, Example 3 and Comparative Example. Aspergillus niger ATCC 9642 (fungus) was used as the test strain, and the antibacterial activity (antibacterial activity value) was evaluated and shown in Table 4 below.

[Table 4]

The antimicrobial activity value refers to a value obtained by evaluating the degree of antimicrobial activity by comparing the number of strains cultured for a certain period of time. When the value is 1 or more, 90% or more of the strains are present, 2 or more are 99% , More than 99.99% of the strain is over 4, and more than 5 is more than 99.999% of the strain is killed.

As can be seen from the above Table 4, it was predicted that the antibacterial activity of Example 3 containing γ-boehmite was much better than those of other cases.

On the other hand, the adhesive between the hot wind supply hose 119 and the raw material supply pipe 80 or between the copper piece 143 and the auxiliary moving piece 145 can be adhered with an adhesive composition. The adhesive composition will be described as follows.

The adhesive composition according to one embodiment of the present invention is an adhesive composition comprising a base and a curing agent, wherein the base is composed of 30 to 90 parts by weight of an ethylene vinyl acetate (EVA) resin, 1 to 30 parts by weight of polyvinyl alcohol (PVA) 10 to 30 parts by weight of water, 5 to 30 parts by weight of calcium carbonate, 0.1 to 1 part by weight of a surfactant and 1 to 20 parts by weight of a thixotropic agent, and the curing agent includes an isocyanate compound. The present invention relates to a water-soluble two-component adhesive composition comprising a subject and a curing agent, which can be applied and cured to produce an adhesive sheet or an adhesive, and is excellent in physical properties such as adhesiveness and heat resistance, Inorganic board such as wood board or magnesium board, and PVC sheet.

The subject basically comprises an ethylene vinyl acetate (EVA) resin, polyvinyl alcohol (PVA), water, calcium carbonate, a surfactant and a thixotropic agent, the ethylene vinyl acetate resin being the main component of the subject, The strength of the adhesive sheet or the adhesive can be kept constant. Conventionally, an epoxy resin is used as a main component of an adhesive sheet or an adhesive. However, in the case of an adhesive sheet or an adhesive using an epoxy resin, volatile organic compounds such as benzene toluene are released to adversely affect the environment and human body. However, the present invention has solved the problems such as environmental problems by excluding the epoxy resin.

Polyvinyl alcohol (PVA) plays a role in improving the heat resistance, water resistance and adhesiveness of an adhesive sheet or adhesive to be produced. The polyvinyl alcohol is preferably contained in an amount of 1 to 30 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. When the amount of the polyvinyl alcohol is less than 1 part by weight, it is difficult to improve the heat resistance or the like, and when it exceeds 30 parts by weight, the relative content of ethylene vinyl acetate is decreased, so that the cohesive force of the adhesive sheet or the adhesive may be weakened. In addition, when the present invention is used in an ondol floor or the like, antimony oxide and zirconium oxide may be used together with polyvinyl alcohol in order to supplement the functionality of polyvinyl alcohol. Antimony oxide and zirconium oxide may enhance the heat resistance of the adhesive sheet or adhesive to be produced, and they are preferably contained in an amount of 5 to 10 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. Below this range, the effect of improving the heat resistance is insignificant, and when it exceeds the above range, it is not economical.

Water is used as the solvent of the subject. Unlike conventional adhesive sheets or adhesives, the present invention has the effect of solving environmental pollution problems because volatile organic solvents are not used. The water is preferably contained in an amount of 10 to 30 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. If the amount of water is less than 10 parts by weight, the ethylene vinyl acetate resin or the like can not be effectively dissolved, and if it exceeds 30 parts by weight, the water may become too thin to lower the strength of the adhesive sheet or the adhesive.

Calcium carbonate controls the viscosity of the adhesive composition and reduces shrinkage during curing. The calcium carbonate is preferably contained in an amount of 5 to 30 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate (EVA) resin. When the amount of calcium carbonate is less than 5 parts by weight, sufficient shrinkage does not occur during curing, and the hardness of the adhesive sheet or adhesive may become poor. When the amount exceeds 30 parts by weight, the viscosity may become too tight and productivity may be deteriorated. In addition, the present invention may use various materials such as wormwoods and clays to replace calcium carbonate. For example, dolomite and / or talc may be used. At this time, it is preferable to mix dolomite and talc in a weight ratio of 1: 1 in order to improve mechanical properties. It is also preferable that the powder has a particle size of 150 to 200 mesh. When the powder is used to have a particle size of 150 to 200 mesh, it is mixed with other components such as ethylene vinyl acetate resin Can be improved.

The surfactant is used to reduce the surface tension when mixing the adhesive composition and to improve the application property. The surfactant is preferably contained in an amount of 0.1 to 1 part by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. As the surfactant, known nonionic surfactants and anionic surfactants can be used, but in order to effectively reduce the surface tension, it is preferable to use a gemini type sulfonic acid type surfactant containing an alkyl chain of 8 to 14 carbon atoms.

The thixotropic agent is to prevent the adhesive composition from flowing down by suppressing the separation phenomenon between the subject and the curing agent when the adhesive composition is applied to the adhesive sheet or the adhesive, and various known various substances such as silica, acryl copolymer and the like But it is preferable to use a clay. Clay is an aggregate of fine hydrated silicate minerals. It refers to a material that is mixed with water in an appropriate amount to produce plasticity when kneaded, rigidity when dried, and sintered when baked at high temperature. Specifically, at least one powder selected from the group consisting of kaolinite, fumed silica and bentonite may be used, but in order to obtain the best effect, it is preferable to use a mixture of fumed silica and bentonite in a weight ratio of 1: 1. The thixotropic agent is preferably contained in an amount of 1 to 20 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. If the thixotropic imparting agent is less than 1 part by weight, the flowability can not be controlled sufficiently, and if the thixotropic imparting agent is more than 20 parts by weight, the flowability is excessively vanished and the productivity may be lowered.

In addition, the subject may further include sodium silicate to improve the adhesive strength of the adhesive sheet or adhesive to be produced. Unlike conventional adhesives, sodium silicate does not cause pollution and is environmentally friendly and has excellent adhesion. The sodium silicate is preferably contained in an amount of 3 to 7 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin based on the solid content. When the amount of sodium silicate is less than 3 parts by weight, the degree of improvement of the adhesion performance is insignificant. When the amount is more than 7 parts by weight, miscibility with other components may be deteriorated.

The subject may further include molybdenum disulfide to improve the abrasion resistance of the adhesive sheet or adhesive to be produced. Molybdenum disulfide (MoS ₂ ) is found in thin veins in minerals and is mined and used as a lubricant. Molybdenum disulfide (MoS ₂ ) has inherent properties of a hexagonal crystal structure in which shear is likely to occur, such as graphite, but the lubricating action is superior to that of graphite. The molybdenum disulfide is preferably contained in an amount of 1 to 5 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin based on the solid content. When the amount of the molybdenum disulfide is less than 1 part by weight, the abrasion resistance can not be improved effectively, and when it exceeds 5 parts by weight, the adhesion strength may be deteriorated. At this time, copper powder may be mixed with molybdenum disulfide.

The subject may further include a flame retardant agent to improve the flame retardancy of the adhesive sheet or adhesive to be produced. The flame retardant is preferably contained in an amount of 1 to 5 parts by weight based on 100 parts by weight of the ethylene vinyl acetate resin. When the amount of the flame retardant is less than 1 part by weight, the degree of improvement of the flame retardancy is insignificant. When the amount is more than 5 parts by weight, the flame retardant agent is not only economical but also has poor compatibility with other components. The flame retardant may be a white powder. Potassium alum (potassium aluminum sulfate, AlK (SO ₄ ) ₂ .12H ₂ O) can be used as the alum, and can be obtained from natural alum. Concretely, it can be produced by dissolving alunculus in water and filtering it, then breaking it, and cooling it if irregularly shaped crystals are formed.

In addition, the subject may further include aluminum hydroxide to improve the antimicrobial properties of the adhesive sheet or adhesive to be produced. It is preferable to use boehmite (AlOH (OH)) as the aluminum hydroxide. Boehmite can be any of γ-boehmite, α-boehmite and pseudo-boehmite. Of these, γ-boehmite excellent in crystallinity and excellent in thermal stability and chemical stability, structurally neutral, and excellent in antibacterial property is preferably used. The γ-boehmite can be prepared by supercritical synthesis of only water (pure water) and aluminum (Al). The aluminum hydroxide is preferably contained in an amount of 5 to 10 parts by weight based on 30 to 90 parts by weight of ethylene vinyl acetate. If the content of aluminum hydroxide is less than 5 parts by weight, it is difficult to exhibit the antimicrobial effect to be achieved. If the content is more than 10 parts by weight, the compatibility with other components may be impaired.

As the curing agent, those containing an isocyanate compound can be used. The isocyanate compound has excellent solubility in water, and the curing agent can be uniformly mixed on the subject to maintain proper viscosity and hardness, thereby shortening the curing time and prolonging the pot life when mixing the curing agent and the curing agent, . The isocyanate compound is preferably a compound containing two or more isocyanate groups in one molecule, and is preferably a compound containing at least two isocyanate groups in a molecule, such as toluene-diisocyanate (TDI), hydrogenated TDI, trimethyl propane- Triisocyanate (TTI), diphenylmethane-4,4-diisocyanoate (MDI), hydrogenated MDI, or hexamethylene-diisocyanate (HDI) Is preferably used. The curing agent is preferably contained in an amount of 1 to 20 parts by weight based on 100 parts by weight of the subject.

The above-mentioned adhesive sheet or adhesive is prepared by preparing a water-soluble two-component adhesive composition by mixing a subject and a curing agent, and then applying and curing the adhesive composition to a work site. If necessary, And may further include a dispersant, an antifoaming agent, an antiseptic agent, a thickener, and the like within the range not impairing the object of the present invention, and may further include a coloring component to realize various colors of the adhesive sheet or adhesive to be produced have.

Hereinafter, the structure and effects of the present invention will be described in more detail with reference to specific examples and comparative examples. However, this embodiment is intended to explain the present invention more specifically, and the scope of the present invention is not limited to these embodiments.

[Example 1]

80 parts by weight of ethylene vinyl acetate, 20 parts by weight of polyvinyl alcohol, 25 parts by weight of water, 10 parts by weight of calcium carbonate, 1 part by weight of a surfactant and 5 parts by weight of a thixotropic agent were mixed to prepare a subject. Toluene-diisocyanate and 25 parts by weight of a curing agent containing toluene-diisocyanate (TDI) were mixed and cured to prepare an adhesive sheet or an adhesive.

At this time, a gemini surfactant having 8 carbon atoms was used as a surfactant. The overall process of synthesis of the surfactant started with the reaction of diamine with 1-bromoalkane. 0.1 mole of N, N, N ', N'-tetramethyl-1,3-diaminopropane (N, N', N'- -bromooctane) was added to 300 g of acetonitrile and stirred for 30 minutes. The solution was refluxed at 353 K for 12 hours, and then the acetonitrile solvent was removed using a rotary evaporator. 500 g of diethylether was added to the resulting product to recrystallize the product. After filtering, it was washed with 500 g of diethyl ether and unreacted impurities were removed. The product thus obtained was treated in a 323 K vacuum oven for 12 hours to remove residual solvent to prepare a gemini surfactant.

[Example 2]

Except that 5 parts by weight of atomium oxide and 5 parts by weight of zirconium oxide were further added in the form of powder in the same manner as in Example 1,

[Example 3]

Except that 5 parts by weight of sodium silicate, 3 parts by weight of molybdenum disulfide, 3 parts by weight of alumina and 8 parts by weight of? -Behohexite were further added in powder form to the subject, and this was prepared in the same manner as in Example 3 Respectively.

[Comparative Example]

A comparative epoxy epoxy flooring adhesive (SEP-4300, manufactured by Samchang Chemical Co., Ltd.) was used as a comparative example.

[Experimental Example 1: Adhesion Test]

An adhesive strength test (KS F 4715) was carried out for Examples and Comparative Examples, and the results are summarized in Table 1 below.

[Table 1]

The adhesion strength of LH construction was 0.8 N / mm < 2 > or more, and both the examples and the comparative examples satisfied the acceptance criteria. However, it was found that the bonding strengths of the examples were superior to those of the comparative examples.

[Experimental Example 2: Evaluation of heat resistance]

The adhesive sheets or adhesives of Examples and Comparative Examples were heated for 8 hours in a hot-air circulating heating furnace maintained at 80 캜, and yellowing degree was visually observed. The results are shown in Table 2 below.

[Table 2]

As can be seen from the above Table 2, in the Examples, yellowing portions were hardly observed unlike the Comparative Examples. As a result, it was found that the heat resistance of the example was very excellent as compared with the comparative example.

[Experimental Example 3: Evaluation of antimicrobial activity]

The adhesive compositions of Example 3 and Comparative Examples were subjected to an antibacterial activity test (JIS Z 2801). Aspergillus niger ATCC 9642 (fungus) was used as the test strain and the antibacterial activity (antibacterial activity value) was evaluated and shown in Table 3 below.

[Table 3]

The antimicrobial activity value refers to a value obtained by evaluating the degree of antimicrobial activity by comparing the number of strains cultured for a certain period of time. When the value is 1 or more, 90% or more of the strains are present, 2 or more are 99% , More than 99.99% of the strain is over 4, and more than 5 is more than 99.999% of the strain is killed.

As can be seen from the above Table 3, it was found that the antibacterial activity of Example 3 containing gamma-boehmite was superior to that of Comparative Example.

The adhesive sheet comprises an adhesive composition. Then, a plastic sheet is placed on the adhesive sheet according to the present invention, and the plastic sheet includes a plastic composition.

The plastic composition includes polypropylene resin, high density polyethylene resin (HDPE), talc and germanium powder. INDUSTRIAL APPLICABILITY The present invention can improve mechanical properties such as heat resistance and durability, can improve the twisting phenomenon, and can minimize the harmfulness to an operator who promotes metabolism and handles hooks by emitting far infrared ray. Referring to FIG. 1, since the second extending portion can come into contact with the upper portion of the heavy object, it is required to have a high durability, a high heat resistance to withstand heat due to friction which may occur during loading of the heavy object, And should not be harmful to workers working near the hook.

Polypropylene resin is a thermoplastic resin which is obtained by polymerization of propylene and is known as an environmentally friendly material which is inexpensive in performance and does not have a risk of being in contact with the contents of foods or cosmetics. The polypropylene resin is excellent in chemical resistance, mechanical properties , And excellent in thermal properties. The polypropylene may use at least one selected from a propylene homopolymer, a random copolymer and a block copolymer, but a homopolymer and a random copolymer are mixed in a weight ratio of 3: 2 to improve mechanical properties .

High-density polyethylene (HDPE) resin is a synthetic resin produced by polymerizing ethylene, and has excellent flowability, rigidity, impact resistance, electrical insulation, moldability, and cold resistance. The high-density polyethylene resin may have the effect of improving the formability by mixing with the above-mentioned polypropylene resin to strengthen the tensile force in the housing portion 15 or the manufacture of the product, and a variety of known products may be used.

The talc improves the mechanical properties such as the strength and heat resistance of the plastic composition, and it is preferable to use a talc powder having a particle size of 150 to 200 mesh for mixing with polypropylene resin or the like. The talc may be used in admixture with other filler components, and may preferably be mixed with the dolomite powder at a weight ratio of 1: 1 to contribute to improvement of the durability of the plastic composition.

Germanium is a silvery white metal, which has the effect of promoting metabolism by emitting a large amount of far infrared rays and anions which are beneficial to the human body. Also, due to its semiconducting nature, germanium has a function of increasing the vitality of germanium ions (outer electrons) when they come into contact with the skin. When entering the body, it is released out of the body within 20 ~ 30 hours with various harmful substances, so there is no poisoning or side effects at all. Particularly, when the particles of inorganic germanium come into contact with human skin, semiconductor properties are introduced into the skin tissue by the osmotic action of the outer electron. It has been found that germanium, which penetrates into capillaries in subcutaneous tissues, moves electrons in the blood vessels through the blood vessel walls, performs blood purification, normalizes blood, and discharges excess electron flow to relieve pain. The germanium can be used in the form of powder. It is preferable that the germanium ore is finely cut to 3 cm or less and then the cut germanium ore is pulverized to a particle size of 80 to 100 mesh.

The plastic composition preferably contains 110 to 130 parts by weight of high-density polyethylene resin, 170 to 190 parts by weight of talc, and 1 to 10 parts by weight of germanium powder per 100 parts by weight of the polypropylene resin. When the receiving portion 15 is manufactured using the plastic composition, it is important to control the specific gravity of the plastic composition in order to eliminate the twisting phenomenon. The specific gravity is preferably 1.02 to 1.10, more preferably 1.03 to 1.05 . That is, when the content of the high-density polyethylene resin is less than 110 parts by weight or the talc is less than 170 parts by weight based on 100 parts by weight of the polypropylene resin, mechanical properties such as durability and the like are limited. Is more than 130 parts by weight or the talc is more than 190 parts by weight, there is a possibility that the specific gravity of the plastic composition is increased and the moldability may be deteriorated. If the amount of the germanium powder is less than 1 part by weight with respect to 100 parts by weight of the polypropylene resin, far infrared rays emission effect due to germanium is difficult to manifest. If the amount is more than 10 parts by weight, .

On the other hand, the plastic composition may further contain various additives in order to improve mechanical properties, mixing properties, moldability, antibacterial properties and the like.

In one embodiment, the plastic composition may further comprise a garlic extract. The garlic extract is a natural adhesive component and functions as a binder for improving the mixing property with other constituents such as a polypropylene resin and a high-density polyethylene resin. The garlic extract is peeled and crushed, and 2 to 3 parts by weight of water is added per 1 part by weight of garlic. After heating at 80 to 100 캜 for 5 hours or more, the liquid component is extracted and filtered, The liquid component can be prepared by concentrating at 55 to 60 占 폚. The garlic extract is preferably contained in an amount of 10 to 20 parts by weight based on 100 parts by weight of the polypropylene resin. When the content of the garlic extract is less than 10 parts by weight, the polypropylene resin and talc can not be properly entangled so that the surface of the container 15 may not be evenly formed. When the content of the garlic extract is more than 20 parts by weight, There is a possibility that the dispersibility and the mixing property may be lowered.

At this time, sucrose (C ₁₂ H ₂₂ O ₁₁ ) powder may be mixed and used to supplement the function of the garlic extract. Sucrose improves the mixing property of the entire composition to enable extrusion in the form of a thin film during the stretching process for producing a plastic composition and makes it possible to catch molecules which cause viscosity problems during mixing with a polypropylene resin or the like, It can also contribute to problem solving. The sucrose is preferably a powder having a particle size of from 1 to 120 탆 in an amount of 95 wt% or more, which is filtered through a 120-mesh net, and is preferably contained in an amount of 1 to 5 parts by weight based on 100 parts by weight of the polypropylene resin. When the content of sucrose is less than 1 part by weight, the effect expressed by sucrose is insignificant. When the amount of the sucrose is more than 5 parts by weight, the viscosity of the plastic composition is excessively increased, and it is difficult to form a uniform sheet.

In one embodiment, the plastic composition may further comprise a clay powder. Kaolin is white clay based on kaolinite and halloysite, and has excellent resistance to abrasion and thermal shock. The clay is preferably contained in an amount of 5 to 10 parts by weight based on 100 parts by weight of the polypropylene. If the amount of the clay is less than 5 parts by weight, there is a problem that the resistance to the external environment is weak. If the amount is more than 10 parts by weight, a synergistic effect of mechanical properties such as a decrease in compressive strength may not be exhibited.

Plastic composition may further include a titanium dioxide (TiO _2). The titanium dioxide can serve as a filler capable of improving the heat resistance of the plastic composition. The titanium dioxide is preferably contained in an amount of 5 to 15 parts by weight based on 100 parts by weight of the polypropylene resin. If the titanium dioxide is less than 5 parts by weight, the abrasion resistance of the receiving portion 15 formed by the plastic composition can not be effectively improved. If the amount is more than 15 parts by weight, workability may be deteriorated, This may not be good.

The plastic composition may further comprise aluminum hydroxide. Aluminum hydroxide functions as an antimicrobial agent capable of improving the antimicrobial properties of the plastic composition. It is preferable to use boehmite (AlOH (OH)) as the aluminum hydroxide. Boehmite can be any of γ-boehmite, α-boehmite and pseudo-boehmite. Of these, γ-boehmite excellent in crystallinity and excellent in thermal stability and chemical stability, structurally neutral, and excellent in antibacterial property is preferably used. The γ-boehmite can be prepared by supercritical synthesis of only water (pure water) and aluminum (Al). The aluminum hydroxide may be contained in an amount of 2 to 7 parts by weight based on 100 parts by weight of the polypropylene resin. If the content of aluminum hydroxide is less than 2 parts by weight, it is difficult to exhibit the antimicrobial effect to be achieved. If the content is more than 7 parts by weight, the compatibility with other components may be impaired.

Further, the plastic composition may further contain a dispersant, an antifoaming agent and the like within the range not hindering the object of the present invention, and may further include a coloring component to realize various colors of the plastic composition.

Hereinafter, the structure and effects of the present invention will be described in more detail with reference to specific examples and comparative examples. However, this embodiment is intended to explain the present invention more specifically, and the scope of the present invention is not limited to these embodiments.

[Example]

A plastic composition was prepared according to the composition shown in Table 1 below. Each material was made of commercially available material. In the case of garlic extract, it was prepared as described in the description of the invention, and the aluminum hydroxide used was gamma-boehmite.

[Table 1]

[Experimental Example 1]

The compositions of Examples 1 to 5 were heated and then stretched to prepare a plastic sheet having a thickness of 10 mm. The uniformity of the sheet surface was confirmed, and it is shown in Table 2 below. The uniformity was measured using a laser sensor (N ₂ laser, oscillation wavelength 337.1 nm, UDHO Laser., Japan), and 30 points were randomly selected to measure their surface roughness , And less than ± 0.3 was uniform, and more than ± 0.3 was evaluated as non-uniform. Here, Examples 1 and 5 were subjected to a third elongation in the longitudinal direction, and Examples 2 to 4 were subjected to a third elongation in the longitudinal direction, the width direction and the longitudinal direction.

[Table 2]

As shown in Table 2, in the case of Examples 1 to 5, the uniformity of the produced sheet was all good. Among them, it was found that the uniformity of Example 3 was the most excellent.

[Experimental Example 2: Torsion Test]

The compositions of Examples 1 to 5 were heated and then stretched to prepare a plastic sheet having a thickness of 2 mm and then molded to produce 100 plastic articles. At this time, the finished product was evaluated for completeness, . Here, Examples 1 and 5 were subjected to a third elongation in the longitudinal direction, and Examples 2 to 4 were subjected to a third elongation in the longitudinal direction, the width direction and the longitudinal direction. 2 is a diagram showing a state in a good state, and Fig. 3 is a diagram showing a state in which it is in a bad state (twist phenomenon).

[Table 3]

As shown in Table 3, in Examples 2 to 4, more than 90% of normal products could be made. Particularly, in Example 3, the defective rate was very small.

[Experimental Example 3: Odor test]

An odor test was carried out for Examples 1 and 3 using ammonia gas. After the initial concentration measurement, the concentration after 5 minutes was measured and the deodorization rate was evaluated. The results are shown in Table 4 below.

[Table 4]

As shown in Table 4, it was found that Example 1 had little deodorizing effect, but Example 3 showed some deodorizing effect.

[Experimental Example 4: Antimicrobial Test]

The compositions of Examples 1 and 3 were tested for antibacterial activity (JIS Z 2801). Staphylococcus aureus ATCC 6538 (Staphylococcus aureus) and Escherichia coli ATCC 25922 (Escherichia coli) were used as the test strains, and the antibacterial activity (antibacterial activity value) was evaluated.

[Table 5]

The antimicrobial activity value refers to a value obtained by evaluating the degree of antimicrobial activity by comparing the number of strains cultured for a certain period of time. When the value is 1 or more, 90% or more of the strains are present, 2 or more are 99% , More than 99.99% of the strain is over 4, and more than 5 is more than 99.999% of the strain is killed. In the case of Example 3, it was confirmed that the antibacterial effect by γ-boehmite was exhibited.

The present invention may be embodied in various forms without departing from the scope of the invention. Accordingly, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

100: Plastic molding production apparatus
110: Material mixing module
120: Extraction module
130: Thickness machining module
140: Cutting module
150: Cooling module
160: Storage module

Claims (2)

A storage module including a space for storing the plastic raw material and supplying the stored plastic raw material to the outside;
An extraction module for heating the plastic raw material and extracting the heated plastic raw material;
Wherein the storage module further comprises a first gas inlet flow path for introducing the nitrogen mixture into the storage module, wherein the raw material mixing module, in which the plastic raw material is charged and mixed, includes a second gas inlet flow path for introducing the nitrogen mixture into the raw material mixing module Wherein the nitrogen gas ratio of the nitrogen mixture flowing through the first gas inlet channel is lower than the nitrogen gas ratio of the nitrogen gas mixture flowing through the second gas inlet channel,
At least one raw material mixing module for supplying and mixing the plastic raw material from the storage module;
A thickness machining module for machining the formed product extracted from the extraction module to a predetermined thickness; And
And a cutting module for cutting the formed article having a thickness from the thickness modifying module to a predetermined width,
Wherein the extraction module comprises:
Heating the plastic raw material supplied from the at least one raw material mixing module, extracting the heated plastic raw material,
Wherein the extraction module comprises:
An extraction module case forming an internal space and having a main supply part and an auxiliary supply part;
An extraction unit provided in the extraction module case and forming a predetermined thickness of the plastic raw material mixture supplied into the extraction module case and extracting the plastic raw material mixture to the outside;
A heating heater unit for raising an internal space temperature of the extraction module case to make the plastic raw material mixture molten; And
And a piston and a cylinder for pressing the plastic raw material mixture provided in the inner space of the extraction module case to be extracted to the extraction part,
Wherein a nitrogen gas ratio of the nitrogen mixture flowing through the first gas inlet flow path is 97% or more and a nitrogen gas ratio of the nitrogen mixture flowing through the second gas inlet flow path is 99% or more,
Further comprising a cooling module (150)
The cooling module 150 includes a cooling roller body part 151 formed in a roller shape and the center shaft of the cooling roller body part 151 is axially connected to a rotation shaft of a separate motor part 158, The cooling roller body portion 151 is configured to be rotated during operation of the cooling roller body 158,
The cooling air passage unit 152 is provided with a cooling air supply hole 153 at a predetermined distance from the cooling air passage unit 152, Respectively,
An indicator 154 to which a zeotropic pigment is applied is provided along the periphery of the cooling air supply hole 153,
The indicator 154 changes color according to the cooling air supplied through the cooling air supply hole 153,
The cooling roller body 151 further includes an air suction hole 155 in a body portion other than the cooling air passage 152. The air suction hole 155 is formed in the cooling roller body 151, Tightly,
The cutting module includes a cutting table portion 141 and a cutting module portion disposed above the cutting table portion 141,
The cutting module part includes a support rod part 142 installed across the cutting table part 141 at a position spaced apart from the cutting table part 141 by a predetermined height, The main moving piece 143 and the auxiliary moving piece 145 that are arranged to be movable along the longitudinal direction of the support rod portion 142 and the cutting blade portion 146 disposed below the auxiliary moving piece 145 However,

An adhesive composition is bonded between the main moving piece 143 and the auxiliary moving piece 145,
The adhesive composition comprises
Wherein the adhesive composition comprises a base and a curing agent,
The subject matter is a composition comprising 30 to 90 parts by weight of an ethylene vinyl acetate (EVA) resin, 1 to 30 parts by weight of polyvinyl alcohol (PVA), 10 to 30 parts by weight of water, 5 to 30 parts by weight of calcium carbonate, 0.1 to 1 part by weight of a surfactant And from 1 to 20 parts by weight of a thixotropic agent,
The polyvinyl alcohol is contained in an amount of 1 to 30 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin,
Antimony oxide and zirconium oxide are contained in an amount of 5 to 10 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin,
The sodium silicate is contained in an amount of 3 to 7 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin on a solid basis,
Molybdenum disulfide is contained in an amount of 1 to 5 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin based on the solid content,
The flame retardant is a white powder, and the flame retardant is contained in an amount of 1 to 5 parts by weight based on 100 parts by weight of the ethylene vinyl acetate resin,
Aluminum hydroxide is contained in an amount of 5 to 10 parts by weight based on 30 to 90 parts by weight of ethylene vinyl acetate,
The curing agent containing an isocyanate compound is contained in an amount of 1 to 20 parts by weight based on 100 parts by weight of the subject.
Apparatus for manufacturing plastic molded articles.

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