KR102513376B1 - Manufacturing method of molded product using coffee ground - Google Patents

Abstract

The method for manufacturing a molded product using coffee grounds according to the present invention includes a drying step of drying the coffee grounds, a screening step of filtering the coffee grounds dried through the drying step, and a gypsum mixture filtered through the filtering step. It consists of a coffee grounds mixing step of mixing coffee grounds and a molding step of putting the mixture prepared through the coffee grounds mixing step into a mold and molding it.
Molded articles manufactured through the above process are eco-friendly because they reuse discarded coffee grounds, and exhibit excellent antibacterial properties, making molded articles that can be used for various purposes such as flower pots, candle containers, interior accessories, incense holders, and mobile phone holders. to provide.

Description

Manufacturing method of molded products using coffee grounds {MANUFACTURING METHOD OF MOLDED PRODUCT USING COFFEE GROUND}

The present invention relates to a method for manufacturing a molded article using coffee grounds, and more particularly, is eco-friendly because discarded coffee grounds are reused, and exhibits excellent antibacterial properties such as flower pots, candle containers, interior accessories, incense holders, mobile phone holders, etc. It relates to a method for manufacturing a molded article using coffee grounds that provides a molded article that can be used for various purposes such as

Coffee grounds are the grounds remaining after processing coffee beans, and the coffee grounds are the grounds remaining after heating the plant coffee beans to a certain temperature or higher and extracting the coffee undiluted solution from the finely crushed powder. It is a porous material containing

That is, coffee grounds have excellent air permeability due to the nature of plant cell tissue, and continuous heat generation is possible for a certain period of time or more through constant compression molding. The coffee grounds contain 15 to 25% of coffee oil, and the solid content thereof is an energy resource with a high calorific value of 6000 kcal or more per kg, and it can be recycled as a main raw material of solid fuel to produce environmentally friendly solid fuel.

In addition, coffee grounds can be recycled as a raw material for various products such as compost or air fresheners in addition to the solid fuel, and recently, research and development to recycle discarded coffee grounds and use them for product production are being actively conducted.

On the other hand, only 0.2% of the beans used to make a cup of coffee are used, and the remaining 99.8% is discarded as coffee grounds (coffee waste) and is not properly utilized. Consumption is soaring.

Accordingly, the amount of coffee grounds generated is also increasing every year, and coffee grounds are mainly disposed of through processes such as landfill or incineration. In this process, a significant amount of carbon dioxide is generated, which is recognized as a problem that deteriorates air quality.

Korean Patent Registration No. 10-1715098 (2017.03.06.) Korean Patent Registration No. 10-2063250 (2019.12.31.)

An object of the present invention is to provide a molded product that is environmentally friendly because waste coffee grounds are reused and exhibits excellent antibacterial properties and can be used for various purposes such as flower pots, candle containers, interior accessories, incense holders, and mobile phone holders. It is to provide a method for manufacturing a molded article using.

Another object of the present invention is to provide a method for manufacturing a molded article using coffee grounds having an excellent deodorizing effect.

An object of the present invention is a drying step of drying coffee grounds, a screening step of filtering coffee grounds dried through the drying step, and mixing starch with coffee grounds filtered through the filtering step, followed by heating and melting It is achieved by providing a method for manufacturing a molded article using coffee grounds, characterized in that it consists of a raw material mixing step of introducing beeswax and a molding step of injecting the mixture prepared through the raw material mixing step into a mold and molding it.

According to a preferred feature of the present invention, the drying step is to be made for 7 to 9 hours at a temperature of 60 to 80 ℃.

According to a more preferred feature of the present invention, the screening step is to be performed using a tray having a hole diameter of 1.5 to 2 millimeters.

According to a more preferred feature of the present invention, the raw material mixing step is to mix 80 to 120 parts by weight of starch with 100 parts by weight of the coffee grounds filtered through the filtering step, and then add 170 to 190 parts by weight of heated and melted beeswax. to be made

According to a more preferred feature of the present invention, the starch is made of at least one selected from the group consisting of tapioca starch, corn starch and potato starch.

According to a more preferred feature of the present invention, in the step of mixing the raw materials, 0.1 to 0.5 parts by weight of the graphene oxide dispersion and 0.1 to 1 part by weight of the deodorant are further contained with respect to 100 parts by weight of the coffee grounds.

According to a more preferred feature of the present invention, the graphene oxide dispersion is composed of 100 parts by weight of ionized water, 0.1 to 1 part by weight of graphene, and 0.01 to 0.1 parts by weight of a dispersing agent.

According to a more preferred feature of the present invention, the deodorant is made of one or more selected from the group consisting of activated carbon, zeolite, photocatalyst, elvan and activated alumina.

According to a more preferred feature of the present invention, the molding step is performed by putting the mixture prepared through the coffee grounds mixing step into a mold and slowly cooling it at room temperature for 100 to 140 minutes.

The method for manufacturing molded articles using coffee grounds according to the present invention is eco-friendly because discarded coffee grounds are reused, and exhibits excellent antibacterial effect and is used for various purposes such as flower pots, candle containers, interior accessories, incense holders, and mobile phone holders. It shows an excellent effect of providing a molded article that can be.

In addition, it shows an excellent effect of providing a molded product with excellent deodorizing effect.

1 is a flow chart showing a method for manufacturing a molded article using coffee grounds according to the present invention.
2 is a photograph showing a drying device used in the drying step of the present invention.
Figure 3 is a photograph showing the heated and melted beeswax used in the raw material mixing step of the present invention.
4 is a photograph showing one of the molds used in the molding step of the present invention.

Hereinafter, a preferred embodiment of the present invention and the physical properties of each component will be described in detail, but this is to be explained in detail so that a person having ordinary knowledge in the art to which the present invention belongs can easily practice the invention, This is not meant to limit the technical spirit and scope of the present invention.

The method for manufacturing a molded product using coffee grounds according to the present invention includes a drying step of drying the coffee grounds (S101), a sifting step of sifting the coffee grounds dried through the drying step (S101) (S103), and the sieving A raw material mixing step (S105) of adding heated and melted beeswax after mixing starch with the coffee grounds fermented through step (S103) and injecting the mixture prepared through the raw material mixing step (S105) into a mold and molding It consists of a molding step (S107).

The drying step (S101) is a step of drying the coffee grounds, which is composed of a process of drying for 7 to 9 hours at a temperature of 60 to 80 ° C. after removing foreign substances from the coffee grounds collected from coffee shops or coffee factories. More specifically, the coffee grounds collected in the drying device are spread thinly and put in, and dried at a temperature of 60 to 80 ° C for 7 to 9 hours. It is preferable to loosen the clumped parts, and it is preferable to use the dried coffee grounds after taking them out of the drying device and cooling them at room temperature for about 1 hour.

The coffee grounds collected initially are wet and lumpy. Since the collected coffee grounds contain moisture, although this varies depending on the season, if the drying process is not carried out within 2 to 3 days, mold or bacteria This is undesirable because it proliferates.

The drying apparatus used in the drying step (S101) of the present invention is photographed and shown in FIG. 2 below.

The filtering step (S103) is a step of filtering the coffee grounds dried through the drying step (S101). It is composed of a process of sifting using a sieve, and the coffee grounds sifted using a sieve as described above serves to provide a molded product with uniform physical properties by exhibiting a uniform particle size.

Even if coffee grounds that are not fermented go through the drying process, moisture may remain in the agglomerated parts. .

If the hole size of the tray is less than 1.5 millimeters, coffee grounds cannot be properly fertilized.

The raw material mixing step (S105) is a step of mixing starch with the coffee grounds filtered through the filtering step (S103) and then introducing heated molten beeswax. After mixing 80 to 120 parts by weight of starch with 100 parts by weight of coffee grounds, 170 to 190 parts by weight of heated and melted beeswax is added.

The starch is contained in an amount of 80 to 120 parts by weight, and is mixed with the coffee grounds to act as a raw material constituting the molded article. Since both the coffee grounds and the starch are biodegradable, they serve to provide molded articles with excellent biodegradability. . The starch component is preferably composed of at least one selected from the group consisting of tapioca starch, corn starch, and potato starch.

In addition, the beeswax is contained in an amount of 170 to 190 parts by weight, and serves as a binder for binding the raw material made of the coffee grounds and the starch.

At this time, as shown in FIG. 3 below, it is preferable that the beeswax is heated and mixed in a molten state. Since the beeswax itself exhibits excellent antibacterial properties, it serves to provide molded products with excellent antibacterial performance. In this unmelted state, it is not possible to provide a molded product exhibiting uniform physical properties because the coffee grounds and starch components are not evenly mixed.

In addition, in the raw material mixing step, 0.1 to 0.5 parts by weight of the graphene oxide dispersion and 0.1 to 1 part by weight of the deodorant may be further contained with respect to 100 parts by weight of the coffee grounds.

The graphene oxide dispersion is preferably composed of 100 parts by weight of ionized water, 0.1 to 1 part by weight of graphene, and 0.01 to 0.1 parts by weight of a dispersing agent. The ionized water serves to neutralize graphene, which is a nano-level thin plate acid exfoliated from graphite, and it is preferable to use an amine-based or stearic acid-based dispersing agent as the dispersing agent, and the graphene is evenly dispersed in the ionized water to form a homogeneous It serves to provide a graphene oxide dispersion exhibiting physical properties.

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The deodorant is made of at least one selected from the group consisting of activated carbon, zeolite, photocatalyst, elvan, and activated alumina, and a particle diameter of 100 to 3000 μm, specifically, 100 to 1000 μm may be used, and the average number of pores formed in the deodorant The diameter may be between 300 and 1500 nm. When the particle size and average pore diameter of the deodorant satisfy the above range, it is not only uniformly dispersed in the raw materials constituting the molded product, but also secures a constant pore size to show deodorization efficiency and prevent loss of the deodorant due to physical impact, etc. can block

If the content of the deodorant is less than 0.1 part by weight, the above effect is insignificant, and if the content of the deodorant exceeds 1 part by weight, the above effect is not greatly improved, but the manufacturing cost is increased and the moldability of the molded article is reduced. can

The forming step (S107) is a step of putting the mixture prepared through the raw material mixing step (S105) into a mold and molding it, and the mixture containing the heated and melted beeswax produced through the raw material mixing step (S105) is mixed with 95 It consists of a process of curing by putting it into a mold while maintaining a temperature of 100 to 100 ° C. and slowly cooling for 100 to 140 minutes at room temperature of 18 to 22 ° C.

One of the molds used in the molding step (S107) of the present invention is photographed and shown in FIG. 4 below.

Hereinafter, the manufacturing method of a molded article using coffee grounds according to the present invention and the physical properties of the molded article manufactured through the manufacturing method will be described with examples.

<Preparation Example 1> Preparation of graphene oxide dispersion

A graphene oxide dispersion was prepared by mixing 100 parts by weight of ionized water, 0.5 parts by weight of graphene, and 0.05 parts by weight of a dispersant (amine-based).

<Example 1>

After removing foreign substances from the coffee grounds and drying them at a temperature of 70 ° C. for 8 hours, the coffee grounds dried through the drying step are sifted using a sieve having a diameter of 1.5 to 2 mm, and 100 weight of the filtered coffee grounds After mixing 100 parts by weight of starch (tapioca) and stirring for 10 minutes at a speed of 150 rpm, 180 parts by weight of heated molten beeswax was added and mixed to prepare a mixture, and the temperature of the mixture was maintained at 95 to 100 ° C. After being injected into the mold in the state, it was hardened by slow cooling at a temperature of 20 ° C. for 120 minutes, and then removed from the mold to prepare a molded product using coffee grounds.

<Example 2>

After removing foreign substances from the coffee grounds and drying them at a temperature of 70 ° C. for 8 hours, the coffee grounds dried through the drying step are sifted using a sieve having a diameter of 1.5 to 2 mm, and 100 weight of the filtered coffee grounds 100 parts by weight of starch (tapioca), 0.3 parts by weight of the graphene oxide dispersion prepared in Preparation Example 1, and 0.5 parts by weight of a deodorant (active ingredient powder) were mixed and stirred at a speed of 150 rpm for 10 minutes, followed by heating 180 parts by weight of molten beeswax is added and mixed to prepare a mixture, and the mixture is injected into a mold while maintaining a temperature of 95 to 100 ° C. After hardening by slow cooling at a temperature of 20 ° C. for 120 minutes, in the mold It was removed to prepare a molded product using coffee grounds.

<Comparative Example 1>

After removing foreign substances from the coffee grounds and drying them at a temperature of 70 ° C. for 8 hours, the coffee grounds dried through the drying step are sifted using a sieve having a diameter of 1.5 to 2 mm, and 100 weight of the filtered coffee grounds A mixture was prepared by adding 100 parts by weight of starch (tapioca) and 180 parts by weight of water and mixing them, and the mixture was hardened by slow cooling at a temperature of 20 ° C. for 120 minutes, and then removed from the mold to form a molded product using coffee grounds. was manufactured.

The antibacterial performance of the molded articles prepared in Examples 1 to 2 and Comparative Example 1 was measured and shown in Table 1 below.

{However, for antibacterial performance, the molded articles prepared in Examples 1 to 2 and Comparative Example 1 are overlapped with each other, sealed with parafilm, and inoculated with the diluted strain cultured between the molded articles. The strain dilution was obtained from Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 15442 and Pseudomonas ( Staphylococcus aureus ATCC 6538) from a strain bank, and culturing these Escherichia coli, Pseudomonas aeruginosa and Pseudomonas overnight in 20ml NB medium, and then about 1,000 It is diluted twice.

After inoculating the dilution of the strain between molded products, it is sealed with parafilm, placed in a petri dish, and incubated for 24 hours in a stationary incubator. After 24 hours, the sample is taken out and spread, the bacterial solution is washed with a buffer, and the bacterial solution is spread on NA agar medium to measure the number of bacteria. For the antibacterial activity test, the pressure adhesion method (KICM-FIR-1003) was used.}

<Table 1>

As shown in Table 1, it can be seen that the molded articles manufactured through Examples 1 and 2 of the present invention contain beeswax and exhibit excellent antibacterial performance.

In addition, far-infrared ray emission of the molded article manufactured in Example 2 was measured and shown in Table 2 below.

{However, the amount of far-infrared ray emission was measured using TSS-5XN, a far-infrared ray measuring instrument from NICO Corporation.}

<Table 2>

As shown in Table 2 above, it can be seen that the molded article manufactured through Example 2 of the present invention emits far-infrared rays.

Therefore, the manufacturing method of a molded article using coffee grounds according to the present invention is eco-friendly because it reuses discarded coffee grounds, and exhibits excellent antibacterial properties, so it can be used for various purposes such as flower pots, candle containers, interior accessories, incense holders, and mobile phone holders. A molded article that can be utilized is provided.

In addition, far-infrared rays are emitted, and a molded article having an excellent deodorizing effect is provided.

S101; drying step
S103; harvest stage
S105 ; raw material mixing step
S107; molding step

Claims (9)

A drying step of drying the coffee grounds;
A filtering step of filtering the coffee grounds dried through the drying step;
A raw material mixing step of mixing starch with the coffee grounds filtered through the filtering step and then adding heated and melted beeswax; and
A molding step of injecting the mixture prepared through the raw material mixing step into a mold and molding it;
In the raw material mixing step, 0.1 to 0.5 parts by weight of the graphene oxide dispersion and 0.1 to 1 part by weight of the deodorant are further contained relative to 100 parts by weight of the coffee grounds,
The graphene oxide dispersion is composed of 100 parts by weight of ionized water, 0.1 to 1 part by weight of graphene, and 0.01 to 0.1 parts by weight of a dispersant,
The deodorant is a method of manufacturing a molded article using coffee grounds, characterized in that consisting of at least one selected from the group consisting of activated carbon, zeolite, photocatalyst, elvan and activated alumina.
The method of claim 1,
The method of manufacturing a molded product using coffee grounds, characterized in that the drying step is performed for 7 to 9 hours at a temperature of 60 to 80 ° C.
The method of claim 1,
The method of manufacturing a molded article using coffee grounds, characterized in that the filtering step is performed using a tray having a hole diameter of 1.5 to 2 mm.
The method of claim 1,
The raw material mixing step is performed by mixing 80 to 120 parts by weight of starch with 100 parts by weight of the coffee grounds filtered through the filtering step, and then adding 170 to 190 parts by weight of heated and melted beeswax. Method for manufacturing molded articles.
According to claim 1 or 4,
The method of manufacturing a molded article using coffee grounds, characterized in that the starch consists of at least one selected from the group consisting of tapioca starch, corn starch and potato starch.
delete delete delete The method of claim 1,
The molding step is a method of manufacturing a molded article using coffee grounds, characterized in that the mixture prepared through the raw material mixing step is put into a mold and slowly cooled at room temperature for 100 to 140 minutes.

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