KR102355198B1 - Candle tray using shell and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a candle tray using shells and a method for manufacturing the same, and more specifically, to: a candle tray using shells, which can exhibit a high aesthetic sense, has excellent mechanical strength, durability and chemical resistance so as to be repeatedly used for a long time, and is manufactured by recycling discarded shells, thereby easily solving environmental issues; and a method for manufacturing the candle tray. To this end, the manufacturing method comprises the steps of: preparing shells, removing foreign substances from the shells, and washing the shells; drying the washed shells; grinding the dried shells to prepare shell powder; mixing the shell powder with purified water, mineral powder, and a bonding agent and stirring the mixture thereof to form a solid body; compressing and molding the solid body into a predetermined shape and drying the solid body at a temperature range of 20-60℃; and heating and firing the dried solid body to obtain a candle tray. The candle tray manufactured by the method according to the present invention is provided with candles of various shapes and colors therein so as to exhibit a high aesthetic sense, has excellent mechanical strength, durability and chemical resistance so as to be repeatedly used for a long time and is manufactured by recycling discarded shells, thereby easily solving environmental issues.

Description

Candle tray using shell and manufacturing method thereof

The present invention relates to a candle tray using a shell and a method for manufacturing the same, and more particularly, to a shell that can be used repeatedly for a long period of time and can be used repeatedly for a long period of time because it has excellent mechanical strength, durability, and chemical resistance as well as high aesthetics. It relates to a candle tray using a shell, which can easily solve environmental problems by recycling, and a method for manufacturing the candle tray.

Shell, which has recently emerged as a cause of marine environmental pollution, has become an issue as a social problem due to the large amount of its generation.

Annual shell production is estimated to be 2 million to 2.5 million tons, and most of it occurs in aquaculture. Therefore, the generated shells are mostly left on the beach in areas where aquaculture farms are concentrated, and not only generate odors, but are also emerging as obstacles to the settlement environment of fishing villages and the development of the fishing village tourism industry.

In order to find a way to use the discarded shells as described above, several organizations are participating in the research. Specifically, each local government operates waste fossil fertilizer producers near the farms in order to solve the problems caused by the occurrence of shells.

However, the amount of treated shells is so insignificant that the amount of shell generated is only within 10% of the total shell production due to the influence of insufficient government support and the lack of fertilizer activity and farmers avoid using it. Considering these circumstances, it is estimated that more than 2.5 million tons of shells are discarded every year without being utilized.

In environmental engineering, these shells are powdered to remove pollutants in exhaust gas from factories, improve soil quality, purify wastewater and improve water quality, and research to use them as fertilizer, feed, and construction materials is underway. , It is difficult to find commercialized cases due to the high-temperature calcination process to remove odors and impurities, the complexity of expensive facilities and processes for strong chemical pretreatment, and profitability problems. In particular, the chemical pretreatment process may have an environmental problem of generating strong acid and alkali waste, so there is a limit to practical commercialization.

On the other hand, a candle (candle) refers to a fuel for lighting in which a wick is inserted into the center of a combustible solid that melts at an appropriate temperature, such as paraffin. The candles are used for various purposes, such as lighting in the event of a power outage in general homes and businesses, or for decoration to create an atmosphere at various banquets and event venues, and the tray for storing these candles is also cylindrical, It is manufactured in various shapes such as a rectangle and a polygon.

However, since the candle tray in the prior art is mainly in the form of a static decoration, there is a problem in that there is a limit in enhancing the aesthetic effect by making the viewer feel tired easily.

Republic of Korea Patent Publication No. 10-1476684

The present invention is to solve the above problems, and an object of the present invention is to use shells, which are industrial wastes, to be eco-friendly and to show high aesthetics, and to have excellent mechanical strength, durability, and chemical resistance to be used repeatedly for a long period of time It is to provide a method for manufacturing a candle tray that can be

These and other objects and advantages of the present invention will become apparent from the following description of preferred embodiments.

These and other objects and advantages of the present invention will become apparent from the following description of preferred embodiments.

The purpose is to prepare a shell to remove foreign substances and wash; drying the washed shells; pulverizing the dried shells to prepare shell powder; mixing and stirring the shell powder with purified water, mineral powder, and a binder to form a solid; Compression molding the solid into a predetermined shape and drying at a temperature range of 20°C to 60°C; and heating and calcining the dried solid material to obtain a candle tray.

Specifically, the mineral powder may include at least one selected from the group consisting of gypsum powder, volcanic stone powder, germanium powder, elvan powder, silica powder, tourmaline powder, and combinations thereof.

Specifically, the heating firing may be characterized in that it is performed for 1 hour to 12 hours at a temperature range of 700 °C to 1,500 °C.

1 is a flowchart illustrating a method of manufacturing a candle tray according to an embodiment of the present invention.
2 is an image showing a candle tray manufactured by the method according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to embodiments and drawings of the present invention. It will be apparent to those of ordinary skill in the art that these examples are merely presented by way of example to explain the present invention in more detail, and that the scope of the present invention is not limited by these examples. .

Further, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and in case of conflict, this specification, including definitions description will take precedence.

In order to clearly explain the invention proposed in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are assigned to similar parts throughout the specification. And, when a part "includes" a certain component, this means that other components may be further included, rather than excluding other components, unless otherwise stated. In addition, "unit" described in the specification means one unit or block that performs a specific function.

In each step, identification numbers (first, second, etc.) are used for convenience of description, and identification numbers do not describe the order of each step, and each step does not clearly describe a specific order in context. It may be performed differently from the order specified above. That is, each step may be performed in the same order as the specified order, may be performed substantially simultaneously, or may be performed in the reverse order.

Hereinafter, embodiments and examples of the present application will be described in detail with reference to the accompanying drawings. However, it may not be limited to these embodiments and examples and drawings of the present application.

One aspect of the present application, the steps of preparing a shell to remove and wash foreign substances; drying the washed shells; pulverizing the dried shells to prepare shell powder; mixing and stirring the shell powder with purified water, mineral powder, and a binder to form a solid; Compression molding the solid into a predetermined shape and drying at a temperature range of 20°C to 60°C; and heating and calcining the dried solid to obtain a candle tray.

According to the method for manufacturing a candle tray according to the present invention, the shell exhibits excellent esthetics with the soft and luxurious color of the shell, and has excellent mechanical strength, durability, and chemical resistance, so that it can be used repeatedly for a long period of time, and discarded shell Recycling can make candle trays easier to solve environmental problems.

Hereinafter, a method of manufacturing a candle tray will be described in detail with reference to FIG. 1 .

First, a shell is prepared, and foreign substances attached to the shell are removed and washed. The shell refers to the shell of one of the industrial wastes, for example, scallops, clams, oysters, clams, lilies, abalone, beetles, and one or more shells selected from the group consisting of combinations thereof. may include Specifically, the shell may refer to an oyster shell. Since the oyster shell has excellent mechanical strength and reflects light to exhibit a subtle color, when a candle tray is manufactured by the method according to the present invention, it has a sparkling effect depending on light, thereby exhibiting high esthetics.

In one embodiment, before the step of removing and washing the foreign substances in the shell, the step of aging by immersing the shell in an aqueous solution containing an organic acid and garlic powder may be further included. By immersing the shell in an aqueous solution containing an organic acid and garlic powder, it is possible to exert the effect of removing the odor and microorganisms remaining in the shell. The organic acid may be used without limitation, but may include, for example, at least one selected from the group consisting of acetic acid, lactic acid, oxalic acid, malic acid, ascorbic acid, and combinations thereof.

In one embodiment, the step of immersing in an aqueous solution containing the organic acid and garlic powder may be performed for about 1 day to about 30 days. If the immersion step is performed for less than about 1 day, the odor contained in the shell may not be sufficiently removed. mechanical properties may be deteriorated.

Next, foreign matter is removed and the washed shell is dried. The drying method is not limited, but for example, it may be dried using one or more methods selected from the group consisting of hot air drying, indoor drying, freeze drying, shade drying, and combinations thereof. Specifically, the drying may be to remove moisture from the surface of the shell using a hot air of about 60 ℃ to about 180 ℃. If the drying is performed in a temperature range of less than about 60°C, the surface moisture of the shell is not sufficiently removed, and the odor may re-occur. can go down

Next, the dried shells are pulverized to prepare shell powder.

In one embodiment, the pulverization may be characterized in that it is performed by a method selected from the group consisting of a ball mill, a wear mill, an airflow pulverizer, a hammer mill, a roller mill, and combinations thereof, specifically, a ball mill It may be carried out in a speed range of about 100 to about 500 rpm using

In one embodiment, when the grinding is performed using a ball mill, the diameter size of the steel balls used in the ball mill may be in the range of about 1 to about 10 nm.

In one embodiment, the shell powder prepared through the pulverization may be characterized in that it has a size of about 50 to about 200 mesh. If the size of the shell powder is less than about 50 mesh, the surface of the prepared candle tray may not be smooth.

Next, the shell powder is mixed and stirred with purified water, mineral powder, and a binder to form a solid.

In one embodiment, the solid material may be in the form of a paste. For example, the shell powder may be mixed with purified water, mineral powder, and a binder and stirred until it becomes a paste to form a solid. At this time, the mixing and stirring may be used using a dough mixer, but is not limited thereto.

In one embodiment, the mixing and stirring may be performed for about 10 minutes to about 60 minutes at a speed of about 1,500 to about 2,500 rpm. If the mixing and stirring is performed at a speed of less than about 1,500 rpm or for a time of less than about 10 minutes, each component may not be sufficiently mixed and agglomeration may occur, and a speed exceeding about 2,500 rpm or about 60 minutes If it is carried out for a time exceeding the above, heat due to mixing and stirring may be excessively generated and the components may be denatured.

In one embodiment, the solid comprises about 10 to about 50% by weight of purified water, about 10 to about 60% by weight of shell powder, about 10 to about 40% by weight of mineral powder, and about 0.1 to about 10% by weight of a binder. can be characterized as

As a component of the solid, the mineral powder may serve as a binder to bind the components to each other while providing sufficient mechanical strength. For example, the mineral powder may include at least one selected from the group consisting of gypsum powder, volcanic stone powder, germanium powder, elvan powder, silica powder, tourmaline powder, and combinations thereof, specifically gypsum powder may include

In one embodiment, the mineral powder may be included in an amount of about 10 to about 40% by weight relative to the total amount of the solid. If the mineral powder is included in an amount of less than about 10% by weight, the surface of a candle tray to be manufactured later may not be smooth, and if it exceeds about 40% by weight, mechanical strength may rather decrease.

As a component of the solid, the binder is added to improve the mixability between the components and to increase the viscosity of the formed solid, and may include a plant-derived extract. Accordingly, the candle tray to be manufactured later can exhibit eco-friendliness by including the plant-derived extract as a component, and also exhibit high mechanical strength even after heating and firing by increasing the mixability between the components.

In one embodiment, the binder comprising the plant-derived extract is natural cellulose, high cell, olive oil wax, polyquater, glucamate, methyl cellulose, carboxyl methyl cellulose, carboxyl vinyl polymer, acacia collagen, CMC ( carboxymethyl cellulose), aloe vera gel, shellac, rubber, resinomide, tamarind gum, propylene glycol arginate, carboxymethyl cellulose sodium, carboxymethyl cellulose calcium, sodium alginate, casein, sodium caseinate, glucomanic acid, Maltodextrin, gluten, propylene glycol alginate, carboxymethylcellulose potassium, natural starch, modified starch (Food Starch Modified), ammonium alginate, glucosamine, guar gum, pectin, carrageenan, gum arabic, locust bean gum, cellulase, spirulina pigment, cyclotext Lean, amylase, steviol glycoside, trisulfide pigment, dextrin, carnauba wax, fructooligosaccharide, locust bean gum, mannose, galactox, tapioca starch, progelatinized starch, Xanthan gum, povidone, HPMC (Hydroxypropyl methyl cellulose), silicic acid soda, decistorin arabic, vitrified, silicate, shellac, rubber, resinoid, bakelite, rubber, It may include at least one selected from the group consisting of silicate shellac magnesite, agar powder, rosin (resin), starch powder, and combinations thereof. Specifically, the binder may include fructooligosaccharide and xanthan gum in a weight ratio of 1:1.

In one embodiment, the binder may be included in an amount of about 0.1 to about 10% by weight based on the total weight of the solid. If the binder is included in an amount of less than about 0.1% by weight, the mechanical strength of the prepared candle tray may decrease, and if it exceeds about 10% by weight, the viscosity of the solid material may be excessively increased and workability may be deteriorated.

In one embodiment, the solid may further include a lotus root extract. For example, the lotus root extract may be added together when mixing and stirring the shell powder with purified water, mineral powder, and a binder to form a solid. The lotus root extract is a natural adhesive component, and may function as a binder to improve the compatibility of the shell powder with other components.

In one embodiment, the lotus root extract is after peeling and pulverizing the lotus root, adding water corresponding to about 5 times the total weight of the lotus root, and heating at about 80 ° C. to about 100 ° C. for about 6 hours or more, It may be prepared by extracting the liquid component and filtering, and then concentrating the filtered liquid component at about 55°C to about 60°C.

In one embodiment, the lotus root extract may be included in an amount of about 0.1 to about 5% by weight based on the total amount of the solid. If the lotus root extract is included in an amount of less than about 0.1% by weight, the mechanical strength of a candle tray to be manufactured later may decrease, and if it exceeds about 5% by weight, the viscosity of the solid may be excessively increased and workability may be reduced.

In one embodiment, the solid material may further include a monofilament yarn. For example, the monofilament yarn may be added together when mixing and stirring the shell powder with purified water, mineral powder, and a binder to form a solid. For example, the monofilament yarn may be a nylon monofilament yarn, and preferably may include a nylon 66 monofilament yarn.

In one embodiment, the nylon monofilament yarn may have a fineness of about 0.1 to about 1 denier, and may be cut to a length of about 0.5 cm to about 2 cm. For example, as the candle tray includes nylon 66 monofilament yarn cut to a fineness of about 0.1 to about 1 denier and a length of 0.5 to 2 cm, high mechanical strength and elasticity may be exhibited.

In one embodiment, the nylon monofilament yarn may be included in an amount of about 0.1 to about 3 wt% based on the total amount of the solid material. If the nylon monofilament yarn is included in an amount of less than about 0.1 wt%, the effect of improving mechanical strength and elasticity may not be sufficiently exhibited, and if it exceeds about 3 wt%, mixability with other components is inhibited and workability may decrease. can

In one embodiment, the solid material may further include sodium silicate. For example, the sodium silicate may be added together when mixing and stirring the shell powder with purified water, mineral powder, and a binder to form a solid. The sodium silicate is one of silicates, and may be obtained by fusing sodium carbonate and quartz powder. Since the sodium silicate exhibits non-combustibility, when included in the candle tray, it is possible to prevent reburn of fire, enhance fire extinguishing performance, and reduce corrosiveness to metal.

In one embodiment, the sodium silicate may be included in an amount of about 0.1 to about 3% by weight based on the total weight of the solid. If the sodium silicate is included in an amount of less than about 0.1% by weight, the combustion prevention effect may not be sufficiently exhibited, and if it exceeds about 3% by weight, miscibility with other components may be inhibited.

In one embodiment, the solid material further includes a natural pest repellent, so that it is possible to achieve a simple and safe insect repellent effect when stored for a long time in an external environment. For example, the natural pest repellent may be added together when mixing and stirring the shell powder with purified water, mineral powder, and a binder to form a solid.

For example, the natural pest repellent may be at least one ethanol extract selected from lemon eucalyptus, citronella, dilemon, geraniol, citral, nerol, and eucalyptus, preferably an ethanol extract of lemon eucalyptus. can

Lemon eucalyptus is an evergreen shrub and is native to Australia. According to the Centers for Disease Control and Prevention, lemon eucalyptus oil is the only alternative to DEET, an insect repellent. When manufacturing the candle tray according to the present invention, an eco-friendly natural pest repellent such as an ethanol extract of lemon eucalyptus is additionally included, so that the prepared candle tray can achieve a simple and safe insect repellent effect even when stored for a long time in an external environment. have.

In one embodiment, the natural pest repellent may be included in an amount of about 0.01 to about 3% by weight relative to the total amount of the solid. If the natural pest repellent is included in less than about 0.01% by weight, it is difficult to achieve the desired insect repellent effect, and when it exceeds about 3% by weight, miscibility with other components may be inhibited.

In one embodiment, the solid material may exhibit high esthetics by further including a dye. For example, the solid material can exhibit various colors by additionally including a dye to exhibit excellent esthetics, and specifically, by separately including dyes of various colors for each solid material, a candle tray in which various colors are stacked in a cascade can be manufactured. can The dye may be used without limitation as long as it can represent a color, for example, it may include one or more dyes selected from the group consisting of Red No. 2, Yellow No. 4, Blue No. 1, and combinations thereof. .

In one embodiment, after the step of mixing and stirring the shell powder with purified water, mineral powder, and a binder to form a solid, the step of removing the bubbles formed in the formed solid may be further included. For example, by putting the formed solid material into a kneader and pulverizing, air bubbles formed in the solid material may be removed to uniformly refine the surface when forming a candle tray later. If the bubbles are not sufficiently removed, cracks may occur on the surface of the candle tray manufactured by expanding the bubbles later. For example, the formed solid may be input and extruded into a vacuum kneader, and the extruded solid may be continuously cut to have a suitable size and a constant weight in consideration of the size of a candle tray, which is a finished product.

Next, the solid material is molded into a predetermined shape and dried to fix the shape of the solid material.

In one embodiment, the forming step may be variously performed according to the viscosity of the solid material in the form of paste, for example, compression molding using a molding die.

In one embodiment, the drying may be performed in a temperature range of about 20 ℃ to about 60 ℃. In one embodiment, when the drying is carried out at a temperature range of less than about 20 ° C, a phenomenon in which the candle tray is broken may easily occur later, and when the drying is performed at a temperature exceeding about 60 ° C, variation of components may occur. have.

In one embodiment, the drying may be from about 6 hours to about 72 hours. If the drying is performed for less than about 6 hours or for more than about 72 hours, the candle tray may be easily broken later, so the drying is preferably performed for about 6 hours to about 72 hours. . More preferably, the drying may be performed for about 12 hours to about 48 hours.

Finally, the dried solid material is heated and calcined to obtain a candle tray. Through the heating and firing, it is possible to remove odors remaining in the shell, decompose proteins, and at the same time provide mechanical strength enough to be used as a candle tray.

In one embodiment, the heating firing may be performed in a temperature range of about 700 ℃ to about 1,500 ℃. If the heating and calcination is performed in a temperature range of less than about 700° C., the protein included in the shell may not be sufficiently decomposed, and when it exceeds about 1,500° C., a phenomenon in which mechanical strength is rather decreased may occur.

In one embodiment, the heating firing may be performed for about 1 hour to about 12 hours. If the heating and calcination is performed for less than about 1 hour, the protein contained in the shell may not be sufficiently decomposed, and if it exceeds about 12 hours, cracks may occur in the manufactured candle tray.

In one embodiment, the candle tray manufactured by the above-described method may be supplied through packaging and inspection, and the step of applying a coating agent, etc. to enhance the aesthetic effect and mechanical strength during the supply may be additionally included. However, the present invention is not limited thereto.

Hereinafter, the configuration of the present invention and its effects will be described in more detail through specific examples and comparative examples. However, these examples are for explaining the present invention in more detail, and the scope of the present invention is not limited to these examples.

[Example 1]

The oyster shells were prepared to remove foreign substances and washed three or more times, and after washing, the moisture on the surface of the shells was dried using hot air at 160°C. The dried shells were pulverized to have a size of 150 mesh using a ball mill including steel balls having a diameter of 10 nm. The pulverized shell powder was mixed and stirred for about 60 minutes at a speed of 2,000 rpm in a dough mixer together with each component as shown in Table 1 below. The solid in the form of a paste formed by stirring was extruded into a vacuum kneader to remove air bubbles and smooth the surface, and was continuously cut to a size of 30 cm and to have a constant weight. The cut solid material was put into a mold and press-molded, and then dried at room temperature at 25° C. for 48 hours. Next, the dried solid material was heated and calcined in a temperature range of 900°C to obtain a candle tray of Example 1.

[Example 2 and Example 3]

Prepared in the same manner as in Example 1, but immersing the oyster shells in an aqueous solution containing 80% by weight of purified water, 15% by weight of organic acid (citric acid), and 5% by weight of garlic powder for about 25 days to proceed with pretreatment included. According to the components in Table 1 below, each of the prepared candle trays was named Examples 2 and 3.

[Comparative example]

It was prepared in the same manner as in Example 1, except that a candle tray was prepared with the components shown in Table 1 below, and this was named as a comparative example.

Solids composition (wt%) Example 1 Example 2 Example 3 comparative example Purified water 40.00 38.00 37.50 60.00 shell powder 25.00 25.00 25.00 20.00 gypsum powder 25.00 25.00 23.50 20.00 binder 10.00 7.50 7.50 - lotus root extract - 2.50 2.50 - nylon 66 monofilament yarn - 2.00 2.25 - sodium silicate - - 1.25 - Lemon Eucalyptus Ethanol Extract - - 0.50 - Sum 100.00 100.00 100.00 100.00

[Experimental Example 1: Measurement of mechanical properties]

Mechanical properties of the target surfaces of the candle trays prepared in Examples 1 to 3 and Comparative Examples were measured. Measurement items were flexural strength, compressive strength, tensile strength, and adhesion strength, and were measured according to KS F 4042-02 standard. The measurement results are shown in Table 2 below.

division flexural strength
(N/mm ² ) compressive strength
(N/mm ² ) The tensile strength
(N/mm ² ) adhesion strength
(MPa) Example 1 18.6 48.0 11.4 2.7 Example 2 21.3 52.9 13.7 3.0 Example 3 24.6 61.4 16.2 3.6 comparative example 10.2 28.6 9.0 2.1

As shown in Table 2, in the case of the candle tray manufactured by the method according to the present invention, compared to the comparative example, significantly improved values in flexural strength, compressive strength, tensile strength, and adhesion strength performance were exhibited.

[Experimental Example 2: Measurement of elastic modulus]

The elastic modulus of the target surfaces of the candle trays prepared in Examples 1 to 3 and Comparative Examples were measured, and the results are shown in Table 3 below.

Item Example 1 Example 2 Example 3 comparative example Modulus of elasticity (MPa) 1.97×10 ⁵ 2.03×10 ⁵ 2.63×10 ⁵ 1.01×10 ⁵

As shown in Table 3, in the case of the candle tray manufactured by the method according to the present invention, it could be confirmed that it exhibited a higher modulus of elasticity compared to the comparative example.

[Experimental Example 3: Measurement of water resistance and chemical resistance]

Water resistance and chemical resistance of the target surfaces of the candle trays prepared in Examples 1 to 3 and Comparative Examples were measured, respectively. As for the measurement method, first, in the case of water resistance, a cylindrical water tank was installed on the target surface of the candle tray, and the penetration of moisture was checked every month for 6 months. In case of chemical resistance, brine having a salt concentration of 35‰ was treated on the target surface of each candle tray for 1 hour every day, and it was checked whether the surface layer of the candle tray was damaged for 60 days per day. The measurement results are shown in Table 4 below.

division Water resistance measurement result (months) Salt water chemical resistance
Measurement result (days) Example 1 1.5 31 Example 2 3 40 Example 3 - - comparative example One 7

As shown in Table 4, it was confirmed that the candle tray manufactured by the method according to the present invention exhibited high water resistance and chemical resistance unlike the comparative example.

[Experimental Example 4 Measurement of Water Resistance and Chemical Resistance]

The heat resistance of the target surface of the candle tray prepared in Examples 1 to 3 and Comparative Examples was measured. As for the measurement method, after leaving the candle tray in a convection oven at 140° C. for 120 minutes, it was visually observed whether cracks and burning occurred on the surface. The measurement results are shown in Table 5 below.

division Heat resistance measurement result Example 1 clear Example 2 clear Example 3 clear comparative example Small cracks less than 1 cm on the tray surface

As shown in Table 5, it was confirmed that the candle tray manufactured by the method according to the present invention exhibited high heat resistance, unlike the comparative example.

In this specification, only a few examples among the various embodiments performed by the present inventors will be described, but the technical spirit of the present invention is not limited or limited thereto, and it is of course that it may be modified and implemented in various ways by those skilled in the art.

Claims (3)

Pre-treating by immersing the shells in an aqueous solution containing 80% by weight of purified water, 15% by weight of citric acid, and 5% by weight of garlic powder for 1 to 30 days by preparing the shell;
removing and washing foreign substances from the pretreated shell;
drying the washed shells;
pulverizing the dried shells to prepare shell powder;
10 to 60% by weight of the shell powder, 10 to 50% by weight of purified water, 10 to 40% by weight of gypsum powder, 0.1 to 5% by weight of lotus root extract, 0.1 to 3% by weight of nylon 66 monofilament yarn, and 0.1 to 10% by weight of binder mixing and stirring to form a solid;
Compression molding the solid into a predetermined shape and drying at a temperature range of 20°C to 60°C; and
heating and calcining the dried solid material at a temperature range of 700° C. to 1,500° C. for 1 hour to 12 hours to obtain a candle tray;
including,
The nylon 66 monofilament yarn is characterized in that the nylon 66 monofilament yarn having a fineness of 0.1 to 1 denier is cut to a length of 0.5 to 2 cm,
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