KR101383528B1 - Resin pellet comprising coffee wastes and method thereof - Google Patents

Abstract

The present invention provides a method for producing a resin pellet that can have small particles obtained by extracting and removing lipid components included in coffee waste and pulverizing the coffee waste. The method for producing a resin pellet including coffee waste according to an embodiment of the present invention comprises the steps of: extracting lipid components from the coffee waste; drying coffee waste from which the lipid components are extracted; pulverizing the dried coffee waste; agitating and dissolving the pulverized coffee waste in a resin; and producing a resin pellet by passing the agitated and dissolved materials through an extruder. The coffee waste is pulverized after lipid components included therein are extracted so that the pulverized particles can be very small and uniform and so that a high quality resin pellet can be produced thereby. [Reference numerals] (AA) Start; (BB) End; (S100) Extract lipid components from coffee wastes; (S110) Dry the coffee wastes from which the lipid components are extracted; (S120) Pulverize the dried coffee wastes; (S130) Agitate and dissolving the pulverized coffee wastes in a resin; (S140) Produce a resin pellet by passing the agitated and dissolved materials through an extruder

Description

Resin pellet containing coffee waste and manufacturing method thereof Resin Pellet Comprising Coffee Wastes And Method Thereof}

The present invention relates to a resin pellet comprising a coffee waste from which the lipid component is extracted and a method for manufacturing the same, and more particularly, after extracting the lipid component from the discarded coffee waste, the resin pellet is extracted using the extracted coffee waste and the general-purpose plastic resin. It relates to a manufacturing method and a resin pellet produced through the same.

 In general, coffee is almost all imported into the country as a favorite food of the world. The increase and decrease of imports of coffee is constant, although there is a change according to the economic situation of the year. According to the statistics of agriculture and forestry, the imports of 58,200 tons were imported in 1996, and the amount of spending was $ 140 million. In 1997, 65,000 tons, which was increased from the previous year, was $ 270 million.

Despite the increasing trend of coffee consumption, coffee supply is supplied in accordance with the consumption because the coffee is a crop produced continuously by tropical vegetation and is rich in raw materials. At present, the cost of spending according to the domestic import of coffee is enormous, and the income continues to increase due to the soft aroma of coffee and the addiction to caffeine.

However, coffee beans, which are imported and sold at relatively high prices, are left as they are once they are used. In particular, after the use of coffee beans, only a small amount of coffee grounds (coffee waste) are used in ashtrays, and it is generally discarded after use of the ashtrays.

Accordingly, the discarded coffee wastes have a strong aroma of coffee, and when mixed with other food wastes, a significant odor is generated. In addition, when the coffee waste falls on the room and on the road as the coffee particles are usually crushed to about 0.5 to 2 mm, cleaning is very cumbersome, difficult and provides a fairly unclean image.

In addition, plastic is a substance derived from petroleum, and all the oil is imported.

 Thus, there is a method of manufacturing PLA fibers using coffee extract residues (Korean Patent Publication No. 10-2010-0035032) as a conventional technique for manufacturing fibers or resins using the discarded coffee waste. According to this technique, the manufacturing cost of the fiber is reduced by using the discarded coffee extract residues, and the elasticity of the PLA fiber, which is a biodegradable fiber, is improved.

In general, various thermoplastics including plastics such as PVC (Polyvinyl chloride), PVA (Polyvinyl alcohol), PET (Poly Ethylene Terephthalate), nylon (Nylon), PBT, PC, PP, PCB (Polychlorinated biphenyl), ABS, etc. In order to regenerate the raw material of the synthetic resin product, recycled synthetic resin pellets are prepared by cutting the homogeneous waste synthetic resin, which is the raw material, to a suitable size by applying a melting temperature suitable for each property, and cooling it again.

That is, the prior art does not disclose a technique for using coffee waste to manufacture the resin pellets containing the general-purpose plastics as described above, the prior art is a technique that can be applied only to the biodegradable fiber PLA fiber, There is a problem that the method of effectively lowering the manufacturing cost of resins and especially plastic resins is not disclosed.

In addition, the current situation is that both the coffee and plastic resins depend on imports, and there is no technique for resin pellets that can be exported in reverse by using two kinds (coffee and plastic resins) imported entirely in this situation. .

In addition, in the past, various impurities were used in preparing the resin pellets, but the grinding was not precisely performed due to the lipid component included in the impurities, and thus, there was a problem in that the quality of the resin pellets was reduced.

Korean Patent Publication No. 10-2010-0035032 (published Apr. 02, 2010)

In order to solve the problems of the prior art, according to an aspect of the present invention, in producing a resin pellet that is a basic material for making a variety of fibers (resin) or plastic products, the cost of producing resin pellets using coffee wastes effectively It can be lowered and provides a resin pellet manufacturing method suitable for general purpose plastics.

In addition, the present invention provides a method for producing a resin pellet that can be reduced by pulverizing by extracting and removing the lipid component contained in the coffee waste and then grinding.

The problems to be solved by the present invention are not limited to the above-mentioned problems. Other technical subjects not mentioned will be apparent to those skilled in the art from the description below.

Resin pellet manufacturing method comprising a coffee waste, according to an embodiment of the present invention, Resin pellet manufacturing method comprising a coffee waste, comprising the steps of: extracting lipid components from the coffee waste; Drying the coffee waste extracting the lipid component; Grinding the dry coffee waste; stirring and melting the ground coffee waste with a resin; And passing the stirred and molten material through an extruder to produce resin pellets.

In the extracting of the lipid component from the coffee waste, the lipid component may be extracted so that the lipid component remaining in the coffee waste is 5% or less.

In the extracting of lipid components from the coffee waste, the coffee waste may be added by adding normal hexane (N-Hexane), 2-methylpentane and 3-methylpentane. It is characterized by extracting lipid components from the waste.

In addition, the ratio of the added normal hexane (N-Hexane), 2-methylpentane (2-Methylpentane) and 3-methylpentane (3-Methylpentane) is 64% of normal hexane (N-Hexane), 2-methylpentane (2-Methylpentane) 11%, 3-methylpentane (3-Methylpentane) is characterized in that 15%.

In the extracting of the lipid component from the coffee waste, chloroform and methanol may be added to the coffee waste to extract the lipid component from the coffee waste.

In the extracting of the lipid component from the coffee waste, a mixture of 95% chloroform and 95% methanol may be added to the coffee waste in a ratio of 4: 1 and stirred. Characterized in that extracted at room temperature in the extractor.

In addition, the step of extracting the lipid component from the coffee waste, characterized in that the extraction of the lipid component from the coffee waste one or more times.

In addition, the step of extracting the lipid component from the coffee waste, characterized in that for extracting the lipid component from the coffee waste through a supercritical carbon dioxide extraction device.

In addition, the step of pulverizing the dry coffee waste, characterized in that to crush the dry coffee waste to less than 250 microns.

In addition, the resin is a polypropylene resin (hereinafter referred to as PP resin), acrylonitrile-butadiene-styrene resin (hereinafter referred to as ABS resin), polyethylene resin Or it is a general-purpose plastic resin containing a polystyrene (polystyrene) resin.

Resin pellets according to an embodiment of the present invention is characterized in that produced by any one of the above manufacturing method.

According to one aspect of the present invention, by efficiently mixing the general purpose plastic and coffee waste can reduce the manufacturing cost of the resin pellets.

In addition, by mixing the general purpose plastic resin and coffee waste at an appropriate temperature it is possible to effectively reduce the amount of harmful gas generated during heating.

In addition, since the grinding process is performed after removing the lipid component contained in the coffee waste, the grinding particles can be made very small and uniform, thereby producing high quality resin pellets.

In addition, although the specific gravity of coffee is about 0.5, when the coffee waste is mixed with a resin to prepare resin pellets, it is possible to produce resin pellets that are lighter than conventional resin pellets. That is, conventional resin pellets have a disadvantage in that the specific gravity is high and eventually the weight is heavy by using stone powder (talc) and glass fibers as additives added to most pellets.

In addition, since it is kneaded with coffee and virgin resin which are natural ingredients, there is an effect that environmental hormones are not detected.

The effects of the present invention are not limited to the effects described above. Unless stated, the effects will be apparent to those skilled in the art from the description and the accompanying drawings.

1 is a flowchart illustrating a resin pellet manufacturing method including coffee wastes from which lipid components are extracted according to an embodiment of the present invention.
2 is a graph analyzing the particle size of coffee wastes from which lipid components are not extracted.
3 is a graph analyzing the particle size of the coffee waste extract lipid components according to an embodiment of the present invention.
4 to 5 is a physical property table showing an example of each of the resin pellets produced by the manufacturing method according to an embodiment of the present invention.

Other advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

Although not defined, all terms (including technical or scientific terms) used herein have the same meaning as commonly accepted by the generic art in the prior art to which this invention belongs. Terms defined by generic dictionaries may be interpreted to have the same meaning as in the related art and / or in the text of this application, and may be conceptualized or overly formalized, even if not expressly defined herein I will not.

On the other hand, the term '~ part' used throughout this specification may mean a unit for processing at least one function or operation. Functions provided within '~' may be provided in a form of being separated into smaller number of components or integrated with other '~'.

In the present specification, the meaning that a component is 'connected' to another component does not necessarily include not only two components being directly connected, but also another component being indirectly connected. The description of the general contents of known configurations in this specification may be omitted so as not to overcome the gist of the present invention.

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

First, a resin pellet manufacturing method including coffee waste according to an embodiment of the present invention will be described based on FIG. 1.

1 is a flowchart illustrating a resin pellet manufacturing method including coffee wastes from which lipid components are extracted according to an embodiment of the present invention.

First, the lipid component is extracted from the coffee waste (S100).

However, the process of obtaining coffee waste before extracting lipid components is as follows.

Coffee waste is obtained by removing the water-soluble and pigment components from coffee. Specifically, high-temperature and high-pressure extraction is performed at a temperature of 8 to 10 bar at a high temperature of 90 degrees Celsius or more (typically 93 to 94 degrees Celsius) for 1 minute or more to extract water-soluble components of coffee (Reducing Sugar, Crude Protein, Citric acid, Lipids). Etc.) and coffee by-products (waste) from which the pigment components extracted at high temperatures are obtained. After this series of processes, lipid components are extracted from the coffee waste.

The reason for extracting the lipid component from the coffee waste is to obtain more uniform and smaller particles when grinding. Substantially the smaller the coffee particles, the better the dispersion in plastics and the like, and the better stirring and kneading can produce high quality resin pellets.

That is, the coffee waste from which the lipid component in a predetermined ratio is extracted can be easily pulverized, the pulverized particle size can be uniform, and the size thereof can also be reduced.

In addition, the following four methods can be applied to extract lipid components from coffee waste. However, the lipid component extraction method is not limited thereto and other lipid extraction methods may be applied.

Firstly, the extraction of lipid components using hexane (Hexane).

IKA overhead stirrer Eurostar Power control visc, 2liter beaker, pyrex galss for extraction, pyrex flask for extraction reservoir, filter paper, 7mbar MZ2C Vacuubrand vacuum pump, Cold trap (Jeoitech, CTB-10).

First, N-Hexane 64%, 2-Methylpentane 11%, 3-Methylpentane 15% was added to 1 kg of coffee waste, extracted by stirring in a stirred extractor at room temperature, filtered and then vacuum concentrated (Agilent Solvent Filtration Kit 250ml Glass Reservoir Tapered Funnel Base, 1liter Flask, Clamp, USA) was used to extract the organic solvent was removed after evaporation.

Second, the extraction of lipid components using chloroform-methanol.

First, 95% Chloroform and 95% Methanol were added to 20 kg of coffee waste, and the mixture was extracted at room temperature in a stirred extractor, filtered, and then vacuum concentrated (Agilent Solvent Filtration Kit 250ml Glass Reservoir Tapered Funnel Base, 1liter Flask, Clamp). , USA) was used to extract the organic solvent after evaporation and removal of the organic solvent at 40 conditions.

Chloroform-Methanol is an organic solvent with a boiling point of about 60.

Third, lipid component extraction using supercritical carbon dioxide.

IKA overhead stirrer Eurostar Power control visc, 2liter beaker, pyrex galss for extraction, pyrex flask for extraction reservoir, filter paper, 7mbar MZ2C Vacuubrand vacuum pump, Cold trap (Jeoitech, CTB-10).

As the supercritical carbon dioxide extractor, Uto Engineering Co. Ltd., Nangyangju City, Korea extractor was used.

First, 1 kg of coffee waste was injected into an extraction tank having a capacity of 2 liters and sealed, and carbon dioxide was used as a supercritical fluid. The gas from the carbon dioxide cylinder is liquefied in the condenser and then compressed into the extraction tank. The extract from the extraction tank and carbon dioxide were reduced to atmospheric pressure so that the gas was blown and the extract collected in the receiver was used as supercritical carbon dioxide extract.

In addition, the extraction pressure was 100bar, 250bar, 500bar and extraction temperature was 40, 70, 100, respectively.

Lipid separation using supercritical fluids is to supply coffee waste and mix it with the supercritical fluid to dissolve the material and to deposit the material sequentially while gradually decreasing the temperature and pressure.

At this time, the coffee waste is supplied to maintain and circulate the supercritical fluid while using pressure and temperature to separate the material from the coffee waste and in turn to precipitate.

In this case, the supercritical fluid is a material that is free to convert solubility to the material through changes in temperature and pressure, and thus is easy to be used for separation of materials. It means that the fluid at the time of the absence, it is preferable to use a supercritical carbon dioxide fluid which is relatively easy to convert to the supercritical state and the free solubility conversion is excellent in the separation effect on lipids, but is not limited thereto.

In addition, supercritical fluid (supercritical fluid) is excellent in the ability to extract and separate specific components from the mixture is active in the food field. Currently, it is used for hop extract of beer, decaffeine process of coffee, and applied to food non-heat sterilization system.

The supercritical fluid extraction method, which is recently attracting attention in the extraction of functional substances, is an extraction method using a fluid having a critical point or more as an extract. Supercritical fluids are attracting attention as a field of separation technology because they have excellent solubility in many materials and have properties that can change the solubility of materials by simply controlling temperature and pressure.

Carbon dioxide in the fluid has a critical temperature of 31, so it can be extracted at low temperatures, prevents heat damage of the extracted active ingredients, and can significantly reduce energy costs during the process. It is used as a solvent. The carbon dioxide supercritical extraction method used as one of the lipid component extraction methods of the present invention achieves the safety of the extract, reduces the extraction cost and shortens the extraction time.

Fourth, Soxhlet lipid extraction. Since the Soxhlet extraction method is well known, the following description is omitted.

In addition, a method for extracting lipids includes a method using an organic solvent or an ionic liquid, and the extraction method described above may be used alone or in combination.

Lipid extraction using an organic solvent is to dissolve the lipid in the coffee waste by using an organic solvent to separate through phase separation, the supplied organic solvent using a solvent consisting of organic solvents such as acetone, ether, alcohol, etc. The solvent may be a substance having a strong property of dissolving lipids.

In addition, lipid extraction using an ionic liquid is to dissolve the hydrophilic material in the coffee waste using the ionic liquid, precipitate the lipid and separate the coffee waste and the lipid through phase separation.

At this time, the supplied ionic liquid has a high solubility to dissolve a variety of organic, inorganic, and polymer materials, and can dissolve most of the hydrophilic material very well, while having a very low solubility for hydrophobic materials such as lipid components. We can use thing having characteristic

In addition, the lipid may be extracted by simultaneously supplying an organic solvent and an ionic liquid as a solvent for phase separation of coffee waste and lipid.

At this time, the hydrophilic material in the coffee waste is removed by using an ionic liquid to separate the lipid from the coffee waste, and the organic solvent and the ion can be separated into the waste and lipid from which the lipid is extracted by dissolving the lipid through the organic solvent. Lipid extraction can be increased through aqueous liquids

Through the test method described above, how much lipid components were actually extracted from the coffee waste lipids extracted through the above test method are analyzed.

The analysis method used was AOAC Official Method 920.97-Petroleum Ether Extract of Roasted Coffee.

Experimental preparations include Ohaus Pioneer Balace, Siphon Tube (cylindrical filter paper), Pyrex Glass (34/45), extraction tube, cooling tube, desiccator, dry oven, filter paper, constant temperature bath, concentrator, tweezers, silver foil foil, gloves , Aqueous pen, crucible tongs, reagent spawn, ethyl ether (boiling point 34.6).

First, 0.5 grams of coffee coffee waste lipids extracted from normal hexane (N-Hexane), chloroform-methanol, and CO2 supercritical system are measured and wrapped in filter paper.

Insert the paper wrapped in the cylindrical filter paper and cover it with cotton wool.

Mark the name of the sample on the cylindrical filter paper with an aqueous pen, not a wired pen.

Put 150 ml of ethyl ether in the calculated water content and block the inlet so that it does not fly into the foil.

Insert the cylindrical filter paper containing the sample into the extraction tube and connect the cooling tube above and the ethyl ether below.

Adjust the temperature of the water bath so that ether drops about 80 drops from the cooler for 1 minute and operate the machine to allow water to flow in the cooling pipe.

Vapor ether condenses in the cooling tube and falls on the cotton wool on the cylindrical filter paper. When the amount of ether in the extraction pipe is a suitable amount, ether dissolved in fat flows into the water by the principle of siphon, and ether is evaporated and extracted continuously. It takes about 10-30 hours for the lipid to be extracted completely.

Remove the cylindrical filter paper from the cooling tube with tweezers and collect the ethyl ether in the water.

Blow off the ethyl ether in the water using a concentrator so that only the lipid remains

Set the oven temperature to 105, wait at least one hour, and allow the desiccator to cool for exactly 30 minutes before weighing. If the weight of the hand is less than 0.5mg, the value before the ascension becomes the content value.

Since the primary measured value is 0.5 mg different from the secondary measured value, the primary value is referred to as the content value.

Obtain the sample, handwriting content, handwriting + lipid content, and substitute the formula to find the remaining lipid in coffee waste (%).

The experimental results are as follows.

Residual Lipid Contents of Coffee Wastes after N-Hexane Extraction

Lipid content of coffee material without lipid extraction: 16.48%

Residual lipid content of coffee waste after first extraction: 9%

Residual lipid content of coffee waste after second extraction: 4.5%

Residual Lipid Contents of Coffee Wastes after Chloroform-Methanol Extraction

Residual lipid content of coffee waste after first extraction: 6.39%

Residual lipid content of coffee waste after the second extraction: 3%

Next, the coffee wastes from which the lipid component is extracted are dried (S110).

The drying process may be variously performed, for example, may be dried through the following process.

Dry the coffee waste so that the moisture contained in the coffee waste is less than 2 percent. Specifically, during the extraction process, coffee wastes containing moisture are dried using a dryer. The drying process results in less than 2% moisture in the coffee waste. This is to ensure that there is no change in physical properties when later melted with the polymer resin at a high temperature.

Table 1 below shows the results of analyzing the component ratios of coffee waste (before the extraction of lipids) remaining after coffee extraction in coffee beans.

carbohydrate
moisture
Ash
Crude protein
Crude fat
29.57%
55.52%
0.7%
7.06%
7.15%

As shown in Table 1, the moisture content of the coffee waste is more than 50%. The coffee waste is dried to remove more than half of this moisture.

Grind the dry coffee waste (S120). Preferably the dry coffee waste is ground up to 250 micrometers or less. Coffee wastes from which lipids are extracted can be easily milled. In other words, the coffee waste, which is partially removed from the lipid component, can be ground to less than 250 micrometers in less time than the coffee waste containing the lipid component. This is because the lipid component contained in the coffee waste interferes with the grinding.

Coffee waste components ground to a size of less than 250 micrometers are well stirred with the resin. Generally, components larger than 250 micrometers do not stir well with the resin and significantly degrade the quality of the resulting resin pellets.

The ground coffee waste is stirred and melted with the resin (S130).

Specifically, the mixture may be stirred and melted with a resin in a liquid state, stirred and melted with a resin in a solid state, or stirred and melted with a resin semi-liquidized at a high temperature. For example, it may be stirred and melted with the semi-liquid general purpose plastic resin at 170 to 190 degrees Celsius.

The general purpose plastic resin is polypropylene resin (hereinafter referred to as PP resin), acrylonitrile-butadiene-styrene resin (hereinafter referred to as ABS resin), polyethylene resin or Polystyrene resins and the like.

The general purpose plastic resin has an advantage of excellent moldability and relatively low cost. For this reason, general-purpose plastic resins can be uniformly stirred and melted with coffee waste, thereby producing high quality resin pellets.

In particular, the ground coffee waste is stirred and melted with the semi-liquid polymer resin at a predetermined temperature, where the predetermined temperature is important. That is, the predetermined temperature may be between 170 degrees Celsius and 190 degrees Celsius.

In addition, the weight of the coffee waste varies with the temperature applied. The weight of the coffee waste changes because the coffee waste is converted to gas above a predetermined temperature.

In order to prevent the loss of coffee waste, the coffee waste lipid extracted and the semi-liquid polymer resin are stirred and melted at a predetermined temperature (between 170 degrees Celsius and 190 degrees Celsius) lower than the weight conversion point of 200 degrees Celsius.

Finally, the stirred and melted material is passed through an extruder to finally prepare a resin pellet (S140).

The stirred and melted (mixed plastic resin) is passed through an extruder to produce resin pellets. The resin pellets thus prepared may be used as materials or raw materials in various fields such as plastic molded article production.

Next, comparing the size and uniformity of the particle size of the coffee waste from which the lipid component has not been removed and the coffee waste from which the lipid component is extracted are described below with reference to FIGS. 2 to 3.

2 is a graph analyzing the particle size of coffee wastes from which lipid components are not extracted.

3 is a graph analyzing the particle size of the coffee waste extract lipid components according to an embodiment of the present invention.

In the graphs of Figs. 2 to 3, the horizontal axis represents the size of the crushed particle size, and the left vertical axis represents the cumulative particle size (%) corresponding to the particle size having each size (solid line on the graph).

In addition, the right vertical axis represents Channel (%) of each particle size having a different size (histogram on the graph).

As shown in FIG. 2, the lipids are not extracted from the coffee wastes, and the size of the grains is not uniform.

That is, due to the lipid component contained in the coffee waste, the grinding is not easy and the grinding is not easy, so the particle size is uneven and the size cannot be reduced. For this reason, when the particle size from which the lipid component is not extracted is mixed with the resin, the quality of the resin pellets finally released is deteriorated.

On the other hand, in the graph shown in FIG. 3, it can be seen that the particle size of the ground coffee waste is about 250 micrometers or less, and is uniformly distributed around the medium particle size. That is, the extraction of the lipid component facilitates the grinding itself, the grinding process can be processed quickly, it can be seen that the size of the milled particle size as a whole.

In conclusion, the extraction of lipids from coffee waste can facilitate grinding (shortening grinding time), uniform grinding (uniform particle size), and the size is also suitable for producing high-quality resin pellets (grain size). Is optimal).

Finally, examples of the resin pellets prepared according to the embodiment of the present invention will be described below based on FIGS. 4 to 5.

4 to 5 is a physical property table showing an example of each of the resin pellets produced by the manufacturing method according to an embodiment of the present invention.

The physical property table shown in FIG. 4 is a physical property table of a resin pellet made by mixing various impurities and resins included in a conventional resin pellet and coffee waste from which lipids are extracted.

The physical property table shown in FIG. 5 is a physical property table of a resin pellet made by mixing only a coffee waste from which resin and lipids are extracted.

4 to 5, it can be seen that the resin pellets using coffee wastes from which lipids are extracted are of higher quality than the conventional resin pellets.

In addition, the coffee waste is obtained by extracting the necessary ingredients from the coffee beans, and the treatment process is landfilled or incinerated. However, there is a problem of soil pollution or air pollution when coffee waste is disposed of by landfill or incineration. Therefore, through the resin pellet production method according to an embodiment of the present invention can be efficiently utilized coffee waste that is discarded and possibly environmental pollution.

The above embodiments are presented to aid the understanding of the present invention, and do not limit the scope of the present invention, from which it should be understood that various modifications are within the scope of the present invention. The technical protection scope of the present invention should be defined by the technical spirit of the claims, and the technical protection scope of the present invention is not limited to the literary description of the claims per se, but the scope of the technical equivalents is substantially equal. It should be understood that the invention extends to.

Claims (11)

In the resin pellet manufacturing method comprising a coffee waste,
Extracting lipid components from the coffee waste;
Drying the coffee waste extracting the lipid component;
Grinding the dry coffee waste;
Stirring and melting the ground coffee waste with a resin; And
Passing the stirred and molten material through an extruder to produce resin pellets;
Lt; / RTI >
Extracting the lipid component from the coffee waste,
A method of extracting lipid components from the coffee waste by adding normal hexane (N-Hexane), 2-methylpentane and 3-methylpentane to the coffee waste,
Extracting lipid components from the coffee waste by adding chloroform and methanol to the coffee waste,
Resin pellet production method comprising a coffee waste, characterized in that for extracting the lipid component from the coffee waste according to any one of the method of extracting the lipid component from the coffee waste through a supercritical carbon dioxide extracting apparatus.
The method of claim 1,
Extracting the lipid component from the coffee waste,
A method for producing a resin pellet comprising coffee waste, wherein the lipid component is extracted such that the lipid component present per 1 g (gram) of coffee waste is 5% (0.05 g) or less.
delete delete delete delete The method of claim 1,
Extracting the lipid component from the coffee waste,
Resin pellet production method comprising a coffee waste, characterized in that the extraction of the lipid component from the coffee waste one or more times.
delete The method of claim 1,
The step of grinding the dry coffee waste,
Resin pellet production method comprising the coffee waste, characterized in that to crush the dry coffee waste to less than 250 microns.
The method of claim 1,
The resin may be,
Polypropylene resin (hereinafter referred to as PP resin), acrylonitrile-butadiene-styrene resin (hereinafter referred to as ABS resin), polyethylene resin or polystyrene resin Resin pellet manufacturing method comprising a coffee waste, characterized in that the general-purpose plastic resin comprising a.
Claims 1, 2, 7 and 9 to 10 of the resin pellets, characterized in that produced by the manufacturing method of any one of claims.

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