KR102570349B1 - Manufacturing method of eco-friendly biodegradable bio-cellulose paper and eco-friendly biodegradable three-dimensional product using the same - Google Patents

Abstract

The present invention relates to a new concept of manufacturing bio-cellulose in the form of paper and manufacturing a three-dimensional, eco-friendly biodegradable product using the cellulose paper.
Conventionally disclosed cellulose paper can be molded only into sheet-type products such as face mask sheets, and when molding three-dimensional products such as straws or pots for gardening that are injection-molded using synthetic resin, it is difficult to maintain the shape, making it an eco-friendly three-dimensional product. It cannot be used for the purpose of manufacturing, causing a problem in that the utilization of cellulose paper is reduced.
The present invention, as a way to eliminate these problems, cuts the plate-shaped cellulose mass into cubes, puts the cellulose pulverized product made by crushing the cut cube-shaped cellulose into a paper molding mold, and then presses it with a compaction plate to perform the primary compaction. The compressed and dehydrated cellulose paper can be produced by performing secondary compaction while passing the first compacted paper mold through a rolling conveyor, and pressing the compaction plate located in the paper mold that has undergone secondary compaction. It is characterized by the development of technology that enables

Description

Manufacturing method of eco-friendly biodegradable bio-cellulose paper and eco-friendly biodegradable three-dimensional product using the same}

The present invention relates to a new concept of manufacturing bio-cellulose in the form of paper and manufacturing a three-dimensional, eco-friendly biodegradable product using the cellulose paper.

In general, cellulose is an organic compound that exists in large quantities following coal in nature, and is a major component constituting the cell walls of higher plants, and is also referred to as fiber.

Cotton wool is 98% cellulose, and fibers such as flax and hemp contain about 70% cellulose. Cellulose is a straight-chain high molecular compound. The purest cellulose can be obtained by degreasing cotton fibers and boiling them with a dilute alkaline aqueous solution. It is a white solid that is odorless and insoluble in water.

A large number of cellulose molecules gather to form a fiber, the smallest unit of which is a crystal structure called a micelle with a diameter of 0.05 nm and a length of 0.6 nm or more. The connecting portion between the micelles is amorphous.

Unlike plant-derived cellulose, bio-cellulose or microbial cellulose produced by microorganisms does not contain a large amount of foreign substances such as lignin and hemicellulose in addition to cellulose. Bio-cellulose has β-1,4 glucan as its primary structure, and fibrils of 20 nm to 50 nm form a three-dimensional network structure.

Due to this structure of the bio-cellulose, it has characteristics such as wettability, absorbency, high strength, and high elasticity, and by improving productivity by improving strains, genetic manipulation, and establishing culture conditions, etc., high-strength industrial materials, composite fibers, medical materials, and enzyme immobilization It can be used as a high-tech material such as

On the other hand, cellulose produced through microbial culture is called bio cellulose or microbial cellulose, and is used as a material for food, clothing, medical burn treatment or cosmetic mask packs.

As a prior art document related to the production of bio-cellulose produced through microbial culture in the form of paper, 「Patent Registration No. 18051715, name/bio-cellulose paper and its manufacturing method」 is disclosed.

In the prior art document, preparing bio-cellulose; sterilizing the bio-cellulose; immersing the sterilized bio-cellulose in barley water extract; dehydrating the bio-cellulose in which the barley tree extract is immersed; compressing and cutting the dehydrated bio-cellulose; spraying a coating agent containing squalene on the cut bio-cellulose; and drying the bio-cellulose treated with the coating agent. A technique for manufacturing a bio-cellulose paper comprising a is disclosed.

The cellulose paper according to the prior art literature can be molded only into a sheet-type product such as a face mask sheet, and when molding a three-dimensional product such as a straw or a pot for gardening that is injection molded using a synthetic resin, it is difficult to maintain the shape, making it environmentally friendly. It cannot be used for the purpose of manufacturing a three-dimensional product, which causes a problem in that the utilization of cellulose paper is reduced.

That is, the cellulose paper according to the prior art document maintains the three-dimensional network structure as it is, so the shape retention is weak, so it cannot maintain the shape when molded into a three-dimensional product, and even if it is molded into a three-dimensional product, moisture absorption due to spatial gaps (low density) If moisture is absorbed during use due to the rise of the product, the shape of the product is damaged.

The present invention, as a means to solve the above problems, breaks away from the conventional conventional manufacturing method of compressing and cutting bio-cellulose to produce it in the form of paper, cuts a plate-shaped cellulose mass into cubes, and cuts the cube-shaped cellulose After putting the cellulose pulverized product made by crushing into the paper molding mold, press it with a compaction plate to perform the first compaction, and pass the paper molding mold that has undergone the first compaction through the rolling conveyor to perform the second compaction. A technique for producing compressed and dehydrated cellulose paper by pressing a compaction plate located in a rough paper mold is sought.

In addition, the present invention cuts the cellulose paper according to the specifications of the straw, then rolls the cut cellulose paper around a straw forming bar, and then dries the straw forming bar on which the cellulose paper is rolled in a cold air dryer, and then drying After separating the molded straw from the straw forming rod, trim both ends to develop a technology to manufacture eco-friendly biodegradable three-dimensional products such as straw.

In the present invention, after cutting the cellulose paper according to the specifications of the pot for gardening, the cut cellulose paper is put between the pot mold and the core mold, the mold and the core mold are dried in a cold air dryer, and dried After separating the molded horticultural pot from the pot mold, a technique for manufacturing an eco-friendly biodegradable three-dimensional product such as a horticultural pot is sought by trimming the upper end.

According to the present invention, it is possible to provide cellulose paper with excellent shape retention, and by using the same, three-dimensional products such as straws and pots for gardening using synthetic resin as a raw material are manufactured in an eco-friendly biodegradable way, and the three-dimensional products manufactured in this way are It provides the effect of protecting the shape from moisture due to its excellent shape retention and weak water absorption.

In addition, even if it is buried in the soil after use, it can be naturally biodegraded by microorganisms in the soil, so it is eco-friendly, eliminates the inconvenience of collection and treatment, and greatly improves the quality and reliability of the product due to this effect, enabling consumers to You can plant a good image.

1 is a flow chart showing a method for manufacturing cellulose paper to which the present invention is applied
Figure 2 is a perspective view of the cut state of the cube-shaped cellulose of the present invention
Figure 3 is a front cross-sectional view of a state in which the compaction plate is pressed after pouring the cellulose pulverized product into the paper molding mold of the present invention
Figure 4 is an exploded perspective view of the paper molding frame and compaction plate of the present invention
Figure 5 is an enlarged cross-sectional view of the primary compaction state by the compaction plate of the present invention
Figure 6 is a front cross-sectional view of the secondary compaction state by the rolling conveyor of the present invention
Figure 7 is a front cross-sectional view of the pressing state using the press of the present invention
Figure 8 is an enlarged cross-sectional view of a state in which cellulose paper is molded by pressing using the press of the present invention
Figure 9 is a perspective view of the laminated and separated state of the cellulose paper of the present invention
Figure 10 is a state diagram of the rolled cellulose paper cut on the straw forming rod of the present invention
11 is a perspective view of a straw manufactured using the cellulose paper of the present invention
12 is a front cross-sectional view of a pot mold and a core mold of the present invention
Figure 13 is a front cross-sectional view of a horticultural pot manufactured using the cellulose paper of the present invention

A preferred embodiment for implementing the solution to the problem to be solved by the present invention in more detail will be described.

A method for manufacturing eco-friendly biodegradable bio-cellulose paper according to a preferred embodiment of the present invention will be described in detail based on the accompanying drawings.

<Method for producing cellulose paper>

1) Bio Cellulose of the monster cutting step

First of all, the present invention puts a cellulose lump 10 made in a plate shape of a certain thickness through microbial culture on a cutting plate 11 as shown in FIG. ) is rotated and passed through in the longitudinal direction and repeatedly cut twice, thereby performing a process of making cube-shaped cellulose 12 having a cube shape.

The reason why the plate-shaped cellulose mass 10 is cut into small cube-shaped cellulose 12 is to make it easy to grind during the grinding operation to be described later.

2) Boiling and washing of cubed cellulose

The cube-shaped cellulose (12) made by the secondary cutting process is boiled in boiling water of 100 ° C or higher to soften the tissue so that the impurities contained in it can be removed while escaping, and the cube-shaped cellulose (12) that has undergone the boiling process is washed in water at room temperature for 2 hours or more to completely remove impurities, and pulverization can be performed more smoothly through imparting flexibility.

3) Grinding step of cube-shaped cellulose

The cube-shaped cellulose 12 from which impurities are removed is put into a large crusher and pulverized very finely to obtain a cellulose pulverized product 20.

The cellulose pulverized product 20 obtained in this way increases the density by destroying the three-dimensional network structure, which is a characteristic of bio-cellulose, so that there are almost no spatial gaps in the internal structure, greatly improving shape retention, and thereby forming a three-dimensional product. Provides the effect of maintaining the shape properly.

Moreover, due to its high density, there are almost no spatial gaps in the internal structure, so the water absorption capacity is lowered, so that even products such as straw (S) exposed to moisture do not lose their shape and maintain their original shape while maintaining excellent marketability and quality. do.

4) Cellulose of pulverized 1st chopping step

In order to mold the cellulose paper 60 into the cellulose paper 60, the cellulose pulverized material 20 made by pulverizing the cube-shaped cellulose 12 is first compacted to harden the tissue.

To this end, the rectangular paper mold 30 with the top and bottom open is placed on a flat work table 31 as shown in FIG. 3, the cellulose pulverized material 20 is poured into the paper mold 30, By pressing the cellulose pulverized material 20 using (32) and first compacting it firmly in a flat plate shape in the paper mold 30, it is possible to maintain a uniform density as a whole.

Here, a technique for preventing the pulverized cellulose 20 poured into the paper mold 30 from being lost to the outside and increasing drainage is additionally applied.

As a technical configuration for this, as a pre-work of pouring the cellulose pulverized material 20 into the paper mold 30, the nonwoven fabric 33 is laid so as to cover the upper end of the paper mold 30 widely as shown in FIG. 33) by pouring the pulverized cellulose material 20 on the surface, the nonwoven fabric 33 surrounds the pulverized cellulose material 20 in the paper mold 30.

Therefore, even if the bottom pressure is applied by pressing the compaction plate 32, the cellulose pulverized material 20 is fundamentally prevented from being lost while passing between the work table 31 and the lower end of the paper mold 30, thereby reducing the amount of loss of raw materials and improving economy In addition, the cellulose paper 60 of the desired thickness can be accurately manufactured by quantitative supply, and the water contained in the cellulose pulverized material 20 is smoothly drained through the non-woven fabric 33 due to excellent drainage. provide effect.

5) Cellulose of pulverized 2nd chopping step

Thus, the cellulose pulverized material 20 that has undergone the primary compaction is subjected to secondary compaction to harden the tissue secondarily, and the paper molding mold 30 in which the cellulose pulverized product 20 that has undergone the primary compaction is located inside is subjected to secondary compaction. As shown in FIG. 6, while passing through the rolling conveyor 40, a plurality of rolling rollers 41 uniformly press the compaction plate 32 to further compact the cellulose pulverized product 20 more firmly, thereby finally completing the cellulose The paper 60 allows to maintain uniform rolling throughout.

6) Forming step of cellulose paper

The paper molding mold 30 that has undergone the secondary compaction is placed on the press die 51 as shown in FIGS. 7 to 8, and the press 50 is lowered to press the compaction plate 32 located in the paper molding mold 30 When the cellulose pulverized material 20 is compressed and dehydrated, it is formed into cellulose paper 60, and the cellulose paper 60 is preferably molded to a thickness of 1 to 2 mm.

That is, when the thickness of the cellulose paper 60 is less than 1 mm, shape retention is reduced because it is too thin, and when the thickness exceeds 2 mm, shape retention is excellent. It is most preferable to mold to a thickness of.

Since the cellulose paper 60 according to the manufacturing method of the present invention is very excellent in shape retention, three-dimensional products such as straws and pots for gardening, which were conventionally made of synthetic resins, can be made eco-friendly by using the cellulose paper 60 of the present invention. It becomes possible to provide special effects that can be manufactured with biodegradability.

<Method of eco-friendly biodegradable straw>

Accordingly, a method for manufacturing an eco-friendly biodegradable three-dimensional product such as straw (S) using the cellulose paper 60 according to the manufacturing method of the present invention will be described.

1) Cutting step of cellulose paper

As shown in FIG. 9, the cellulose paper 60 is cut according to the specifications (length, diameter, etc.) of the straw (S) in a state of overlapping dozens of sheets.

2) Rolling step of cellulose paper

The cellulose paper 60 cut to fit the standard of the straw S is spread on a rolling plate, and the straw forming rod 70 of the corresponding diameter is placed on it, and the operator puts the straw forming rod 70 on the straw forming rod 70 as described above. The cut cellulose paper 60 is rolled so that the cut cellulose paper 60 can be rolled on the straw forming bar 70 as shown in FIG. 10 .

3) Straw forming step

When the straw forming bar 70 on which the cut cellulose paper 60 is rolled is transported to a cold air dryer and dried in cold air for 2 hours or more, the rolled cellulose paper 60 is molded to maintain the shape of the straw S be able to

4) straw separation and trimming step

While going through such a drying operation, the molded straw (S) is separated from the straw forming rod (70), and both ends of the separated straw (S) are cut with a cutter to make them smooth, thereby improving the appearance and marketability.

5) straw Sterilization step

The trimmed straw (S) is sterilized for 30 to 50 minutes with hot air at 100 ° C. or higher in a drying oven, so that a hygienic and safe straw (S) can be provided.

<Manufacturing method of eco-friendly biodegradable horticultural pot>

Next, a method of manufacturing an eco-friendly biodegradable three-dimensional product such as a garden pot (P) using the cellulose paper 60 will be described.

1) Cutting step of cellulose paper

The cellulose paper 60 is cut according to the specifications (height, diameter, etc.) of the horticultural pot P in a state where dozens of sheets are overlapped as shown in FIG.

2) Input step of cellulose paper

The cellulose paper 60 cut to fit the standard of the horticultural pot P is inserted between the pot mold 80 and the core mold 81 so that molding can be performed.

Here, the pot mold 80 and the core mold 81 are made of a structure having a plurality of ventilation holes 82 to ensure smooth ventilation during drying in the cold air dryer, thereby providing an effect in which drying and molding are ensured. .

3) Horticultural pot molding step

When the port mold 80 and the core mold 81 into which the cut cellulose paper 60 is put are transported to a cold air dryer and dried in cold air for 2 hours or more, the cellulose paper put into the pot mold 80 and the core mold 81 ( 60) can be molded to maintain the shape of the horticultural pot (P).

4) Separation of horticultural pots and trimming step

While going through such a drying operation, the molded horticultural pot (P) is separated from the pot mold 80, and the upper end of the separated horticultural pot (P) is cut with a cutter to make it smooth, thereby enhancing the appearance and marketability. .

The straw (S) or gardening pot (P) manufactured using the cellulose paper 60 of the present invention is eco-friendly because it can be naturally biodegraded by microorganisms in the soil even if it is buried in the soil after use, and can be composted. can be utilized.

In addition, in the present invention, only the straw (S) or gardening pot (P) is disclosed using the cellulose paper (60), but it is not limited thereto, and various types of eco-friendly biodegradable three-dimensional products such as disposable plates are manufactured. You can do it.

10: cellulose lump 11: cutting plate
12: cube-shaped cellulose 20: cellulose pulverized product
30: paper molding frame 31: work table
32: compaction plate 33: non-woven fabric
40: rolling conveyor 41: rolling roller
50: press 51: press die
60: cellulose paper 70: straw forming rod
80: pot mold 81: core mold
82: air hole S: strong
P: Horticultural pot

Claims (7)

cutting the plate-shaped bio-cellulose mass 10 into cubes to facilitate crushing;
breaking the three-dimensional network structure of the cut cube-shaped cellulose (12) and pulverizing it into a grinder to increase density;
The cellulose pulverized material 20 made by pulverizing the cube-shaped cellulose 12 is poured into the paper mold 30 placed on the flat work table 31, and then the cellulose pulverized material 20 is crushed Pressing and performing primary compaction in the paper molding mold 30;
performing secondary compaction on the cellulose pulverized material 20 by uniformly pressing the compaction plate 32 while passing the paper molding mold 30 that has undergone the primary compaction through the rolling conveyor 40;
Cellulose pulverized material 20 while pressing the compaction plate 32 located in the paper molding mold 30 using the press 50 by placing the paper molding mold 30 that has undergone the secondary compaction on the press die 51 Forming a cellulose paper 60 by compressing and dewatering; Method for producing an eco-friendly biodegradable bio-cellulose paper comprising a.
According to claim 1,
Prior to the crushing step, the manufacturing method of eco-friendly biodegradable bio-cellulose paper, characterized in that it further comprises the step of boiling the cube-shaped cellulose (12) in boiling water and then washing it in water at room temperature.
According to claim 1,
As a preliminary operation of pouring the cellulose pulverized material 20 into the paper molding mold 30, the nonwoven fabric 33 is laid while covering the upper end of the paper molding mold 30, and then the cellulose is crushed on the surface of the nonwoven fabric 33 A method for producing eco-friendly biodegradable bio-cellulose paper, characterized in that the non-woven fabric (33) wraps the cellulose pulverized material (20) in the paper molding mold (30) by pouring water (20).
Cutting the cellulose paper (60) manufactured by the manufacturing method of claim 1 according to the standard of the straw (S);
rolling the cut cellulose paper 60 around a straw forming rod 70;
drying the straw forming bar 70 on which the cellulose paper 60 is rolled in a cold air dryer to form a straw S;
Separating the molded straw (S) from the straw forming rod (70), and cutting and trimming both ends of the separated straw (S) with a cutter; Eco-friendly biodegradable three-dimensional product using eco-friendly biodegradable bio-cellulose paper, characterized in that it comprises a.
According to claim 4,
The trimmed straw (S) is an eco-friendly biodegradable three-dimensional product using eco-friendly biodegradable bio-cellulose paper, characterized in that it further comprises the step of sterilizing for 30 to 50 minutes with high-temperature hot air of 100 ° C. or higher in a drying oven.
Cutting the cellulose paper (60) manufactured by the manufacturing method of claim 1 according to the standard of the pot (P) for gardening;
inserting the cut cellulose paper 60 between the pot mold 80 and the core mold 81;
drying the pot mold 80 and the core mold 81 into which the cellulose paper 60 is put into a cold air dryer to form a pot for gardening (P);
Separating the molded horticultural pot (P) from the pot mold 80, and cutting and trimming the upper end of the separated horticultural pot (P) with a cutter; Eco-friendly biodegradable three-dimensional product using eco-friendly biodegradable bio-cellulose paper, characterized in that it comprises a.
According to claim 6,
The port mold 80 and the core mold 81 are eco-friendly biodegradable three-dimensional products using eco-friendly biodegradable bio-cellulose paper, characterized in that consisting of a structure having a plurality of ventilation holes (82).

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