KR20220079488A - Manufacturing method of upcycling furniture using waste mask - Google Patents

Abstract

The present invention relates to a method for manufacturing upcycling furniture using a waste mask, and more specifically, after removing auxiliary materials such as wires and earring strings from a sterilized waste mask and putting it into a furniture-shaped molding frame, the waste mask in the frame It is possible to prevent environmental pollution and waste of resources due to disposable and discarded waste masks by melting and cooling them at room temperature to manufacture upcycled furniture.

Description

Manufacturing method of upcycling furniture using waste mask

The present invention relates to a method for manufacturing upcycling furniture using a waste mask, and more specifically, after removing auxiliary materials such as wires and earring strings from a sterilized waste mask and putting it into a furniture-shaped molding frame, the waste mask in the frame In a method for manufacturing upcycling furniture using a waste mask that can prevent environmental pollution and waste of resources due to disposable and discarded waste masks by melting and cooling them at room temperature to manufacture durable upcycled furniture it's about

Disposable masks began to become common due to fine dust and yellow dust, and after 2019, their use exploded due to the COVID-19 pandemic. .

The amount of disposable masks used and thrown away in this way is about 7.3 billion, and the weight is 146,000 tons.

Even if it is assumed that the COVID-19 pandemic can be ended with vaccines and treatments, it is expected that wearing a mask when going out due to air pollution such as fine dust and yellow dust will be prolonged, while the damage caused by environmental pollution caused by discarded waste masks is in a very serious situation.

Conventionally, in relation to the method of disposing of the waste mask, a separate discharge method for preventing secondary infection has been proposed, but this technology still provides a fundamental solution to the environmental problem caused by the disposal of the disposable waste mask as garbage. can't

Accordingly, it is very necessary to develop a technology that can be used for permanent product production by adding design or solid durability, rather than disposing of the waste mask as garbage.

Accordingly, the problem to be solved by the present invention is to manufacture upcycling furniture using the waste mask, which can be recycled into furniture having durability such as hard plastic, which is thrown away, to enhance its value, and to prevent environmental pollution and waste of resources. The purpose is to provide a method.

In order to solve the above problems, a method for manufacturing upcycling furniture using a waste mask according to an exemplary embodiment of the present invention includes sterilizing viruses by leaving the waste mask at room temperature for 2-7 days; removing sub-materials from the sterilized waste mask except for non-woven fabrics containing 90% by weight or more of polypropylene; putting the waste mask from which the subsidiary materials have been removed into a furniture-shaped molding frame; melting the waste mask by applying heat at 200° C. to 630° C. to the waste mask put into the frame; curing the molten waste mask by cooling it at room temperature; and manufacturing the waste mask upcycling furniture comprising the step of removing the frame.

Meanwhile, the frame may have an aluminum tape attached therein.

In an embodiment of the present invention, melting the waste mask may include applying hot air for 15 to 50 minutes.

In one embodiment of the present invention, the step of curing the waste mask by cooling at room temperature is cooled for 60 to 100 minutes when the room temperature is 25° C. or higher, and when the room temperature is 5° C. or less, a clamp is attached to the frame and 20 It may include a step of cooling for minutes to 30 minutes.

A method of manufacturing upcycling furniture using a waste mask according to an embodiment of the present invention for solving the above other problem includes the steps of sterilizing the virus by leaving the waste mask at room temperature for 2-7 days; removing sub-materials from the sterilized waste mask except for non-woven fabrics containing 90% by weight or more of polypropylene; inserting the waste mask from which the auxiliary materials are removed into a frame for molding in the shape of a furniture component; melting the waste mask by applying heat at 200° C. to 630° C. to the waste mask put into the frame; cooling the molten waste mask at room temperature to obtain a hardened first furniture component; and adding a waste mask into the frame in a state in which the second furniture component is in contact with the first furniture component in the frame, melting and cooling the first furniture component and joining the second furniture component to each other. However, the second furniture component may include a step of being manufactured by the method of any one of claims 1 to 4.

Details of other embodiments are included in the detailed description.

The present invention is effective in that the discarded waste mask is reproduced as furniture having a solid durability to enhance its value and to prevent environmental pollution and waste of resources.

The effect of the present invention is not limited by the contents exemplified above, and more various effects are included in the spring specification.

1 is a flowchart illustrating a method for manufacturing upcycling furniture using a waste mask according to an embodiment of the present invention.
2 is a flowchart illustrating a method of manufacturing upcycling furniture using a waste mask according to another embodiment of the present invention.
3 is a photograph of an upcycling chair manufactured according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them, will become apparent with reference to the embodiments described below in detail. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the embodiments allow the disclosure of the present invention to be complete, and those of ordinary skill in the art to which the present invention pertains. It is provided to fully inform the person of the scope of the invention, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, 'and/or' includes each and every combination of one or more of the recited items. The singular also includes the plural, unless the phrase specifically states otherwise. As used herein, 'comprises' and/or 'comprising' does not exclude the presence or addition of one or more other elements in addition to the stated elements. Numerical ranges indicated using '-' or 'to' indicate a numerical range including the values listed before and after as the lower and upper limits, respectively, unless otherwise stated. 'About' or 'approximately' means a value or numerical range within 20% of the value or numerical range recited thereafter.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the component from other components, and the essence, order, or order of the component is not limited by the term.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular.

And in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

Hereinafter, the present invention will be described in detail.

1 is a flowchart illustrating a method for manufacturing upcycling furniture using a waste mask according to an embodiment of the present invention.

Referring to FIG. 1 , the method for manufacturing upcycling furniture using a waste mask includes the steps of sterilizing the virus by leaving the mask at room temperature (S10), removing the subsidiary materials from the sterilized waste mask (S20), and the waste from which the subsidiary materials are removed. Putting the mask into the frame for molding (S30), melting the waste mask in the frame (S40), cooling the molten waste mask at room temperature to harden it (S50), and removing the frame (S60) It can be manufactured sequentially.

Sterilization step (S10)

The waste mask may include at least one selected from the group consisting of a mask that needs to be disposed of, scrap fabrics discarded at a mask factory, and defective masks that cannot be used.

In the case of a waste mask that is likely to be contaminated with a virus for human use, it can be left at room temperature for 2 to 7 days to sterilize the virus host.

The standing may preferably be left at room temperature for 3-5 days.

In the case of scrap fabrics thrown away at the mask factory or defective masks that cannot be used, the sterilization step can be omitted because the possibility of contamination with viruses is low because people do not use them.

Sub-material removal step (S20)

It is possible to remove auxiliary materials except for the body part from the sterilized waste mask. The body part of the waste mask may refer to a non-woven fabric part that filters air by covering the user's nose and mouth in the waste mask. In addition, the body part may be a part composed of a nonwoven fabric containing polypropylene in an amount of 90% by weight or more.

The auxiliary material refers to members other than the body part, and may be a nose supporter, an ear hook, wire, rubber, silicon, or a metal ring.

The nonwoven fabric may preferably contain 99% by weight or more of polypropylene.

Frame input step (S30)

The waste mask from which auxiliary materials have been removed can be put into a frame for molding in the shape of furniture. The amount of waste masks to be input may be tens to hundreds, but is not limited thereto, and may vary depending on the type and size of furniture to be manufactured.

The frame may be made of a wood material such as birch plywood or MDF, and may be a mold made of aluminum or metal.

The frame may be engraved by computer numerical control (CNC).

When the frame is made of wood, an aluminum tape may be attached to the inside of the frame to withstand high heat of 500° C. or more.

The frame may be in the shape of a furniture component, and the furniture component refers to parts, accessories, and parts constituting furniture such as a chair, a bed, and a cabinet. For example, in the case of a chair, it may be a leg, a seat plate, or a backrest, and in the case of a table, it may be a leg or a top plate. This is a list of some examples of furniture and furniture components, and products belonging to furniture and their components may correspond to the furniture and furniture components of the present invention, so the types are not limited to the above examples.

Waste mask melting step (S40)

The waste mask can be liquefied by applying heat of 200°C to 630°C to the waste mask put into the frame.

The method of applying the heat may be a method of applying hot air for 15 to 50 minutes, preferably 20 to 40 minutes, more preferably 25 to 35 minutes. The hot air may be provided by a method of directly supplying the waste mask or indirectly supplying it by contacting the frame surface.

The temperature of the heat may be preferably 300-630 °C, more preferably 500 °C to 630 °C.

At this time, if heat is applied to a high temperature of 630°C or higher, or if heat is applied continuously after the waste mask is liquefied, the mask liquefied resin may be oxidized.

Waste mask curing step (S50)

The liquefied mask can be cooled at room temperature to harden it into the shape of furniture or furniture components.

The room temperature may vary depending on the season or work environment, and when the room temperature is 25 ° C or higher, it is cooled for 60 to 100 minutes, and when the room temperature is 5 ° C or less, a clamp is attached to the frame and for 20 to 30 minutes It may include a step of cooling.

The clamp refers to a part or tool fastened between the frame of the first furniture component and the second furniture component. When the room temperature is 5°C or less, hardening occurs quickly, and shrinkage and irregularities may occur during the curing of the liquefied mask. can be used to prevent If clamps are used, it may take additional time to attach the clamps.

Frame removal step (S60)

When the waste mask is completely cured, the frame is removed from the cured waste mask. The completely hardened waste mask has the shape of a piece of furniture and is easily detached from its frame.

Next, referring to FIG. 2 , looking at a method of manufacturing upcycling furniture using a waste mask, the same method as in steps S10 to S50 of FIG. 1 is sequentially performed to obtain the first furniture component, and then the first furniture component is added. Contacting the second furniture component (S70), adding the waste mask to the frame of the first furniture component (S80), melting the inputted waste mask (S90), and cooling the molten waste mask to make the first Through the step ( S100 ) of bonding the furniture component and the second furniture component, it is possible to manufacture upcycling furniture using the waste mask.

Contact step (S70)

A second furniture component contacts the first furniture component without removing the first furniture component from the frame. Specifically, at least a portion of the second furniture component may be physically brought into contact with the surface of the exposed portion of the first furniture component that is not covered by the frame. The second furniture component may be a furniture component hardened through steps S10 to S60.

The contact does not require a screw or piece to connect or fix each component.

Waste mask additional input step (S80)

In a state where the first furniture component and the second furniture component are in contact with each other, the waste mask is additionally put into the frame of the first furniture component. Preferably, the waste mask may be additionally inserted around a portion in which the first furniture component and the second furniture component are in contact.

At this time, the additionally added waste mask corresponds to the waste mask that has undergone the sterilization step (S10) and the auxiliary material removal step (S20).

Waste mask melting step (S90)

It is a step of melting the additionally added waste mask, and since this step is the same as the step of melting the waste mask (S40) of FIG. 1, a detailed description thereof will be omitted.

Waste mask cooling and furniture component bonding step (S100)

When the liquefied waste mask is cooled and hardened, the first furniture component and the second furniture component are firmly joined without screws or pieces necessary for fixing.

Since the cooling and curing process is the same as the waste mask curing step S50 of FIG. 1 , a detailed description thereof will be omitted.

When the waste mask is cooled at room temperature and completely hardened, the frame of the first furniture component can be removed, and upcycled furniture can be manufactured using 100% waste mask as a raw material.

Even if additional materials such as dyes, paints, and painting are not added when performing the above operation, furniture of various colors can be manufactured using the original color of the waste mask.

In addition, referring to FIG. 3 , depending on the ratio and method of mixing masks of various colors, it is possible to improve the aesthetics of the bar that can manufacture furniture having various colors, and by controlling the melting and cooling time and temperature, etc. Furniture with textures can be manufactured.

Example 1

1) Prepare the waste mask

The waste mask was left at room temperature for 4 days to sterilize the virus host, and the earring string and wire except for the nonwoven fabric of the waste mask were removed to prepare a waste mask.

2) Preparing the frame for molding

To manufacture a chair seat as a furniture component, a wooden plywood frame with a circular shape of 30 mm thick and 320 mm in diameter is attached to it, and a 30 mm thick and 440 mm long 'L' shape to manufacture a chair leg as a furniture component. A wooden plywood frame with aluminum tape attached was prepared.

3) Furniture component chair legs manufacturing

250 sheets of waste masks were put into the prepared 'L'-shaped frame, and 630°C hot air was applied for 25 minutes. After all the waste masks were melted and reached a liquefied resin state, they were cooled at room temperature of 15° C. for 40 minutes. After the waste mask liquefied resin was completely cured, the frame was removed to manufacture a chair leg. The same operation was performed three times in succession to manufacture three chair legs.

4) Manufacturing of furniture components and chair seats

750 waste masks were put into the prepared circular frame, and hot air of 630° C. was applied for 45 minutes. After all the waste masks were melted and reached a liquefied resin state, they were cooled at room temperature of 15° C. for 60 minutes.

5) Joining chair seat plate and chair leg

One chair leg was brought into contact with the seat plate that was not separated from the frame. 25 additional waste masks were added to the frame where the chair seat plate and the legs were in contact, and 630°C hot air was applied for 10 minutes. The additionally added waste mask melted and became a liquid resin to fill the empty space where the chair seat plate and the chair leg came into contact. After cooling at room temperature of 15°C for 25 minutes, the chair seat plate and the chair leg were joined together without fixing parts such as screws or pieces. The same operation was repeated two more times, and the frame of the seat plate was removed to manufacture a chair.

Experimental example

Experimental Example 1

Five chairs prepared according to Example 1 were prepared and the load that the chair could withstand was tested to confirm durability.

After placing an 80 kg water bottle on all chairs, an additional load was added as shown in Table 1 below.

division chair 1 chair 2 chair 3 chair 4 chair 5 extra load 50 kg 70 kg 90 kg 100 kg 120 kg chair condition no deformation no deformation no deformation 1 chair leg micro-crack Two chair legs cracked

As can be seen in the table above, a chair made of a waste mask can stably support a load of up to 170 kg, and the durability to withstand such a load represents the load-bearing performance that allows normal adult men and women to safely use the chair. The solid durability of furniture made from waste masks is confirmed.

Experimental Example 2

In a method of manufacturing furniture using a waste mask, an experiment was conducted on the manufacturing time according to the temperature of the hot air that melts the waste mask.

Waste masks from which sterilization and auxiliary materials were removed were prepared in 8 groups of 250 sheets each.

As a wooden frame with aluminum tape attached, a CNC-engraved frame with a thickness of 3 cm, a length of 30 cm, and a width of 5 cm in the form of a square pillar was prepared, and the laboratory temperature was maintained at 15°C.

The prepared lung mask was administered to the frame, and hot air under the conditions shown in Table 2 was applied.

division District 1 District 2 District 3 District 4 District 5 District 6 District 7 District 8 temperature 180℃ 200℃ 300℃ 400℃ 500℃ 600℃ 630℃ 650℃

Table 3 below shows the experimental results confirming the change in the state of the waste mask every 10 minutes for 10 to 55 minutes when hot air was applied to each group at the same temperature as above.

division 15 minutes 20 minutes 25 minutes 30 minutes 35 minutes 40 minutes 45 minutes 50 minutes District 1 liquefaction 0% 0% 0% 0% 0% 0% 0% 0% Oxidation does not occur District 2 liquefaction 0% 0% 0% 0% 0% 5% 10% 17% Oxidation does not occur District 3 liquefaction 0% 0% 0% 10% 25% 40% 55% 60% Oxidation does not occur District 4 liquefaction 0% 0% 10% 32% 47% 64% 80% 90% Oxidation does not occur District 5 liquefaction 0% 5% 28% 67% 12% 100% 100% End of experiment Oxidation does not occur some occurrence District 6 liquefaction 0% 12% 35% 72% 100% 100% End of experiment Oxidation does not occur some occurrence District 7 liquefaction 10% 20% 100% 100% End of experiment Oxidation does not occur some occurrence District 8 liquefaction 5% 25% 100% End of experiment Oxidation Oxidation occurs

As can be seen from the above table, when the temperature of the hot air is 200° C. or less, it is confirmed that the waste mask melted and liquefied is 0%, so it is not easy to reach liquefaction. In addition, when the temperature of the hot air is 630° C. or higher, oxidation occurs before reaching liquefaction, so that it is difficult for the polypropylene of the waste mask to be cured into the shape of furniture according to the manufacturer's intention. In addition, even when hot air of 630° C. or lower is applied, even after all the waste masks are liquefied, when hot air is continuously applied, the waste masks are oxidized, making it difficult to manufacture suitable furniture. Therefore, in order to melt the waste mask with hot air, the temperature of the hot air is preferably 200° C. to 630° C., and it is preferable to stop applying the hot air after the waste mask is liquefied.

In the above, the embodiment of the present invention has been mainly described, but this is only an example and does not limit the present invention. It will be appreciated that various modifications and applications not exemplified above are possible. For example, each component specifically shown in the embodiment of the present invention may be implemented by modification. And differences related to such modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

Claims (5)

a) sterilizing the virus by leaving the waste mask at room temperature for 2-7 days;
b) removing auxiliary materials other than the nonwoven fabric containing 90% by weight or more of polypropylene from the sterilized waste mask;
c) putting the waste mask from which the subsidiary materials are removed into a frame for molding in the shape of a furniture;
d) melting the waste mask by applying heat at 200° C. to 630° C. to the waste mask put into the frame;
e) curing the molten waste mask by cooling it at room temperature; and
f) a method of manufacturing waste mask upcycling furniture comprising the step of removing the frame The method according to claim 1
The frame is engraved with Computer Numerical Control (CNC), and an aluminum tape is attached to the inside of a waste mask upcycled furniture manufacturing method 3. The method according to claim 2
Step d) is a waste mask upcycling furniture manufacturing method comprising the step of applying hot air for 15 to 50 minutes 4. The method of claim 3
In step e), when the room temperature is 25° C. or higher, cooling for 60 to 100 minutes, and when the room temperature is 5° C. or lower, attaching a clamp to the frame and cooling for 20 to 30 minutes Way a) sterilizing the virus by leaving the waste mask at room temperature for 2-7 days;
b) removing auxiliary materials other than the nonwoven fabric containing 90% or more of polypropylene from the sterilized waste mask;
c) putting the waste mask from which the auxiliary materials have been removed into a frame for molding in the shape of a furniture component;
d) melting the waste mask by applying heat at 200° C. to 630° C. to the waste mask put into the frame;
e) cooling the molten waste mask at room temperature to obtain a hardened first furniture component; and
f) adding a waste mask into the frame in a state in which a second furniture component is in contact with the first furniture component in the frame, melting and cooling the first furniture component and joining the second furniture component to each other; including,
The second furniture component is a waste mask upcycled furniture manufacturing method manufactured by the method of any one of claims 1 to 4.

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