KR20240069568A - Vegan leather using mushroom mycelium and its manufacturing method - Google Patents

Abstract

The present invention provides vegan leather using mushroom mycelium and a manufacturing method thereof. the vegan leather using mushroom mycelium comprises: a mycelium fabric layer in which mushroom mycelium is cultured and proliferated; a first fiber reinforcing layer formed on a lower portion of the mycelium fabric layer; a skin layer formed on a lower surface of the first fiber reinforcing layer; a second fiber reinforcing layer formed on an upper portion of the mycelium fabric layer; and an adhesive layer composed of a first adhesive layer formed between the skin layer and the first fiber reinforcing layer and a second adhesive layer formed between the mycelium fabric layer and the first fiber reinforcing layer.

Description

Vegan leather using mushroom mycelium and its manufacturing method}

The present invention relates to vegan leather using mushroom mycelium and a method of manufacturing the same, and more specifically, to vegan leather using mushroom mycelium, which provides vegan leather that can express the texture of leather using mushroom mycelium, a vegetable material, and the same. It is about manufacturing method.

In general, natural leather made from livestock has various problems, such as having to deal with chemicals generated during the manufacturing process or wastewater generated during livestock farming for leather production, which can be detrimental to the life of the animal. Research and development on artificial leather is actively underway to improve the value of leather.

In particular, in the case of artificial leather, artificial leather has been developed that can obtain a texture similar to natural leather by using synthetic resin as a fabric. The developed artificial leather is inexpensive and easy to process, so it is used for clothing, shoes, interior and exterior materials for furniture, and vehicles. It is used in many industrial fields, including interior decoration materials and interior and exterior materials for electronic products.

This artificial leather is manufactured by impregnating the fabric with a resin composition prepared by mixing polyurethane resin and a highly volatile organic solvent such as dimethylformamide, methyl ethyl ketone, toluene, acetone, and isopropyl alcohol, and coating it to a certain thickness. , As a result, it can exhibit a mass similar to natural leather, a soft surface feeling, and improved flexibility.

Meanwhile, organic solvents used to manufacture artificial leather have excellent solvent properties for polyurethane, but as they are organic chemicals, they generate a lot of pollution during the manufacturing process, causing environmental pollution.

In particular, because dimethylformamide coagulates when in contact with water, workers must individually wipe and remove used machinery, waste products tanks, and supply tanks after work. It easily penetrates into the human body through the human respiratory tract or skin, causing liver diseases, etc. A recovery device must be installed to prevent environmentally hazardous substances that cause kidney cancer, skin diseases, etc. from being released into the atmosphere.

In addition, the appearance of a product coated with dimethylformamide has a color similar to that of white powder, so a process of coloring the surface using a pigment is necessary, and the pigment also contains dimethylformamide. There is a problem that it requires a lot of hassle and processing costs.

Accordingly, there is a need to actively conduct research on the development of artificial leather that is environmentally friendly and harmless to the human body.

The background or prior art described herein is only intended to help understand the technical significance of the present invention, and does not mean technology that is widely known in the technical field to which this invention belongs before the application of the present invention.

Republic of Korea Patent No. 10-2357750 Republic of Korea Patent No. 10-0402910

The technical task to be achieved by the present invention is to provide a leather texture based on eco-friendly mushroom mycelium, which can meet the needs of customers who are interested in animal life, and the process can be simplified to reduce equipment costs. The purpose is to provide vegan leather and its manufacturing method using mushroom mycelium that can further increase the price competitiveness of the product.

However, the purpose of the present invention is not limited to this, and of course, purposes and effects that can be understood from the means of solving the problem or embodiments are also included even if not explicitly mentioned.

In order to solve this problem, the vegan leather using mushroom mycelium according to the present invention includes a mycelium fabric layer in which mushroom mycelium is cultured and proliferated; A first fiber reinforcement layer formed below the mycelium fabric layer; a skin layer formed on the lower surface of the first fiber reinforcement layer; A second fiber reinforcement layer formed on top of the mycelium fabric layer; And an adhesive layer consisting of a first adhesive layer formed between the skin layer and the first fiber reinforcement layer, and a second adhesive layer formed between the mycelium fabric layer and the first fiber reinforcement layer.

In one embodiment, the adhesive layer is a seed culture medium in which mushroom mycelium is cultured, or mushroom mycelium powder made of the seed culture medium is mixed in a weight ratio of less than 1% by weight or 5% by weight based on the total weight of the adhesive. It is characterized by being

In one embodiment, the skin layer is characterized as a polyurethane sheet coated with a pigment with a thickness of less than 0.1 mm.

In one embodiment, the skin layer is characterized by further comprising a glossy layer so that the surface is glossy after the pigment is coated.

In one embodiment, the first and second fiber reinforcement layers are characterized in that they are composed of a thickness of 0.5 mm to 1.0 mm.

In one embodiment, the mycelium fabric layer is made of polyester material or cotton material with a thickness of 0.4 mm, and the seed culture medium in which reishi mushrooms, oyster mushrooms, and plum mushrooms are cultured, or mushroom mycelium powder is adsorbed. It is characterized by

In another embodiment, in a method of manufacturing vegan leather using mushroom mycelium, (a) any one of reishi mushrooms, oyster mushrooms, and plum mushrooms, or two or more subcultured mushrooms in PDB (Potato Dextrose Broth) nutrient medium Preparing a seed culture by adding mycelium and culturing it for a certain period of time; (b) after step (a), preparing a mushroom mycelium fabric by adding the fabric to the seed culture medium so that the mushroom mycelium is adsorbed to the fabric and cultured and multiplied; (c) After step (b), the mushroom mycelium fabric is sterilized at 121°C for 15 minutes using an autoclave, and then the sterilized mushroom mycelium fabric is dried at 50°C to 80°C using a dry oven. Drying at a temperature for 2 to 15 hours; (d) after step (c), leathering the mushroom mycelium fabric; (e) After step (d), homogenizing the surface of the mushroom mycelium fabric and coating the mushroom mycelium fabric formed with a homogenizer.

In another embodiment, each of the above steps (a) is characterized by further performing the step of producing mushroom mycelium powder by powdering the prepared seed culture medium.

In another embodiment, step (a) includes 24 g of PDB reagent mixed with 1,000 mL of distilled water and potato, glucose, and sugar in a weight ratio of 10:1:1, respectively. mixing; (a2) forming a PDB medium by placing the PDB mixture in an autoclave and sterilizing it at 121°C for 15 minutes; (a3) naturally cooling the PDB medium until the temperature reaches 25°C, and culturing the mushroom mycelium subcultured in the cooled PDB medium at a temperature of 20°C to 25°C for 48 to 72 hours; It is characterized by including.

In another embodiment, step (b) includes (b1) cutting the fabric to a certain size; (b2) Putting the seed culture and the fabric into an autoclave and sterilizing them for 15 minutes while maintaining the temperature at 121°C; (b3) preparing a mixed solution by mixing the PDB medium and the seed culture medium at a weight ratio of 2:1, and impregnating the fabric with the mixed solution to cultivate the mushroom mycelium contained in the mixed solution; including; It is characterized by

In another embodiment, step (a) and step (b3) are characterized by culturing for 72 to 120 hours while maintaining a constant temperature of 20°C to 25°C.

In another embodiment, step (d) includes (d1) purifying the mushroom mycelium fabric to remove proteins contained in the mushroom mycelium fabric; (d2) after step (d1), treating the mushroom mycelium fabric with a softener; (d3) after step (d2), dyeing the mushroom mycelium fabric; (d4) After the step (d3), drying the mushroom mycelium fabric at 60°C.

In another embodiment, step (e) includes (e1) flattening the surface of the mushroom mycelium fabric; (e2) After step (e1), mixing seed culture medium or mushroom mycelium powder consisting of the seed culture medium in an amount of less than 1% by weight based on the total weight of the adhesive to produce a mushroom mycelium adhesive; (e3) after step (e2), applying the mushroom mycelium adhesive to the polyurethane sheet and adhering the polyester sheet to form a first fiber reinforcement layer; (e4) After step (e3), applying the mushroom mycelium adhesive to the upper surface of the first fiber reinforcement layer and adhering it to the lower surface of the mushroom mycelium fabric layer made of the mushroom mycelium fabric to form a lower coating layer; (e5) After the step (e4), a sheet of polyester material is combined with the upper surface of the mushroom mycelium fabric layer 40 to form an upper coating layer made of a second fiber reinforcement layer. It is characterized in that it comprises a. .

In another embodiment, step (e) includes (e1) flattening the surface of the mushroom mycelium fabric; (e2) After step (e1), mixing the seed culture medium or mushroom mycelium powder consisting of the seed culture liquid in an amount of 5% by weight based on the total weight of the adhesive to prepare a mushroom mycelium adhesive; (e3) after step (e2), applying the mushroom mycelium adhesive to the polyurethane sheet and adhering the polyester sheet to form a first fiber reinforcement layer; (e4) After step (e3), applying the mushroom mycelium adhesive to the upper surface of the first fiber reinforcement layer and adhering it to the lower surface of the mushroom mycelium fabric layer made of the mushroom mycelium fabric to form a lower coating layer; (e5) After the step (e4), a sheet of polyester material is combined with the upper surface of the mushroom mycelium fabric layer 40 to form an upper coating layer made of a second fiber reinforcement layer. It is characterized in that it comprises a. .

In another embodiment, a skin layer made of a polyurethane sheet; An adhesive layer in which a seed culture medium containing mushroom mycelium including reishi mushrooms, oyster mushrooms, and plum mushrooms, or mushroom mycelium powder consisting of the seed culture liquid is mixed at 5% by weight based on the total weight%; First and second fiber reinforcement layers are adhered to the skin layer by the adhesive layer and are made of a polyester sheet, wherein the first fiber reinforcement layer is attached to the adhesive layer applied on top of the skin layer. It is adhered, and the second fiber-reinforced layer is configured to adhere to the first fiber-reinforced layer by applying the adhesive layer to its lower surface.

In another embodiment, in a method of manufacturing vegan leather using mushroom mycelium, (a) subculture of one or two or more of reishi mushrooms, oyster mushrooms, and plum mushrooms in PDB (Potato Dextrose Broth) nutrient medium is performed. Preparing a seed culture by adding mushroom mycelium and culturing it for a certain period of time; (b) after step (a), mixing the seed culture medium with the adhesive at 5% by weight based on the total weight of the adhesive; (c) After step (b), the adhesive is applied to the upper surface of the polyurethane sheet to form a first adhesive layer, and a first fiber reinforcement layer made of a polyester sheet is adhered to the top of the first adhesive layer. Forming a lower layer of vegan leather; (d) After step (c), the adhesive is applied to the upper surface of the first fiber reinforcement layer to form a second adhesive layer, and a sheet of polyester material is adhered to the upper surface of the second adhesive layer to form the second fiber. It is characterized in that it includes; forming an upper layer of vegan leather composed of a reinforcing layer.

In another embodiment, step (a) further comprises powdering the prepared seed culture to produce mushroom mycelium powder.

In addition to the technical problems of the present invention mentioned above, other features and advantages of the present invention are described below, or can be clearly understood by those skilled in the art from such description and description.

According to the present invention as described above, the following effects are achieved.

The vegan leather and its manufacturing method using mushroom mycelium according to the present invention can meet the needs of customers who are interested in animal life by providing leather texture based on eco-friendly mushroom mycelium, and the process is simplified. Equipment costs can be reduced and the price competitiveness of products can be further increased.

In addition, the various and beneficial advantages and effects of the present invention are not limited to the above-described content, and may be more easily understood in the process of explaining specific embodiments of the present invention.

Figure 1 is a diagram showing vegan leather using mushroom mycelium according to a first embodiment of the present invention;
Figures 2 to 6 are flow charts showing a method for manufacturing vegan leather using mushroom mycelium according to the first embodiment of the present invention.
Figure 7 is an example showing vegan leather using mushroom mycelium according to the first embodiment of the present invention;
Figure 8 is a view showing vegan leather using mushroom mycelium according to the second embodiment of the present invention;
Figure 9 is a flow chart showing a method for manufacturing vegan leather using mushroom mycelium according to the second embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. First, when adding reference signs to components in each drawing, it should be noted that the same components are given the same reference numerals as much as possible even if they are shown in different drawings. Additionally, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted.

In addition, terms such as “include,” “comprise,” or “have” described below mean that the corresponding component may be included, unless specifically stated to the contrary, and thus do not exclude other components. It should be construed as being capable of further including other components, and all terms, including technical or scientific terms, are generally used by those skilled in the art to which the present invention pertains, unless otherwise defined. It has the same meaning as understood.

Additionally, when describing the components of the present invention, identification symbols such as first, second, A, B, (a), and (b) may be used. These identification codes are intended to distinguish the component from other components and are used only for convenience of explanation, and the identity, order, or order of the component is not limited by the identification code. When a component is described as being “connected,” “coupled,” or “connected” to another component, that component may be directly connected or connected to that other component, but there is another component between each component. It will be understood that elements may be “connected,” “combined,” or “connected.”

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

As shown in Figure 1, the vegan leather using mushroom mycelium according to the first embodiment of the present invention includes a skin layer 10, an adhesive layer 20, a fiber reinforcement layer 30, and a mycelium fabric layer 40. It is composed.

Preferably, in the case of vegan leather using mushroom mycelium according to the first embodiment of the present invention, a skin layer 10 is formed at the bottom, and an adhesive layer 20 is formed on the upper surface of the skin layer 10. A first adhesive layer 22 is formed, and a first fiber reinforcement layer 32 made of a fiber reinforcement layer 30 is formed on the top of the first adhesive layer 22, and the upper surface of the first fiber reinforcement layer 32 is formed. It is formed by applying a second adhesive layer 24 made of an adhesive layer 20, and a mycelium fabric layer 40 containing mushroom mycelium is applied to the top of the second adhesive layer 24 and the upper surface of the mycelium fabric layer 40. The second fiber reinforcement layer 34 made of the fiber reinforcement layer 30 is configured to be combined.

However, it is not limited to this, and the vegan leather using the mushroom mycelium of the present invention has a skin layer (10), a fiber reinforcement layer (30), and a mycelium fabric layer (40) depending on the mixing ratio of the mushroom mycelium included in the adhesive layer (20). Of course, lamination and adhesion can be performed in various forms.

The skin layer 10 of the present invention is made of a common polyurethane resin, and is composed of a polyurethane sheet whose surface is coated with pigments of various colors.

At this time, the skin layer 10 may be coated with a pigment whose thickness does not exceed 0.1 mm, but is not limited to this.

In addition, the skin layer 10 of the present invention can be coated using either a spray coating method, which sprays a certain amount of pigment onto the surface of the polyurethane resin, or a roller coating method, but is not limited thereto.

In addition, the skin layer 10 of the present invention may further comprise a glossy layer so that the surface of the skin layer 10 can be glossy after the pigment is coated.

At this time, the skin layer 10 may be formed by applying a mixture of gloss control agents such as acrylic resin, wax, and filler mixed at a certain weight ratio to the surface of the pigment-coated skin layer 10, but is limited to this. It's not like that.

Meanwhile, the skin layer 10 of the present invention has been described as forming a pigment layer, or a pigment layer and a gloss layer on the surface of a polyurethane resin that has already been manufactured, but it is not limited to this, and the polyurethane resin composition and the pigment are The skin layer 10 may be manufactured using a mixed composition mixed at a certain weight ratio.

Based on 100% by weight of the total weight of the polyurethane resin composition, 55% to 65% by weight of polyurethane emulsion, 20% to 23% by weight of pigment, 3% to 6% by weight of silicone, 5% to 7% by weight of crosslinker, It can be configured to be mixed at a ratio of 7% to 9% by weight of urethane bond.

In addition, when the skin layer 10 of the present invention is a mixture of the polyurethane resin composition and the pigment at a certain weight ratio, it can be applied at a certain thickness on the surface of the fiber reinforcement layer 30 or the mycelium fabric layer 40, which will be described later. , but is not limited to this, and may be configured to be applied to a separate mixing paper and then laminated to the fiber reinforcement layer 30 or mycelium fabric layer 40.

The adhesive layer 20 is applied to a certain thickness on the upper surface of the skin layer 10 and the upper surface of the fiber reinforcement layer 30, respectively, and may be composed of a commonly used polyurethane adhesive, and is preferably a two-component polyurethane adhesive. It may be composed of urethane adhesive.

This adhesive layer 20 may be formed to a certain thickness by a known method, such as being applied to the upper surface of the skin layer 10 and the upper surface of the fiber reinforcement layer 310 using a roller coating method.

At this time, the adhesive layer 20 of the present invention contains a seed culture solution containing mushroom mycelium including reishi mushrooms, oyster mushrooms, and plum mushrooms included in the mycelium fabric layer 40, which will be described later, at a certain weight ratio, or It is preferable that mushroom mycelium powder consisting of the seed culture medium is included in a certain weight ratio.

At this time, the adhesive layer 20 of the present invention may contain the seed culture medium in the range of 0.1% by weight to 5% by weight, but is not limited thereto, based on the total weight. The adhesive layer (20) according to the first embodiment of the present invention is not limited thereto. In the case of 20), it may be configured to be included in the polyurethane adhesive at less than 1% by weight, or at 5% by weight.

This is because the mycelium fabric layer 40 is independently configured and included in the vegan leather of the present invention, so the seed culture contained in the adhesive layer 20 is 5 weight in total weight of the polyurethane adhesive forming the adhesive layer 20. If it exceeds %, the adhesive strength between the two substrates (skin layer 10 and fiber reinforcement layer 30, or fiber reinforcement layer 30 and mycelium fabric layer 40) bonded by the adhesive layer 20 may be reduced. Therefore, in the first embodiment of the present invention, the seed culture may be mixed with the polyurethane adhesive in a range of at least 0.1% by weight and at most 5.0% by weight.

The fiber reinforcement layer 30 is made of a common polyester material, and reinforces the physical properties of the vegan leather of the present invention to ensure that it has stable retention of the processed form even when processed into a product using the vegan leather. , It is configured to be attached to the upper and lower surfaces of the mycelium fabric layer 40 through a combining process and an adhesion process, respectively.

At this time, the fiber reinforcement layer 30 includes a first fiber reinforcement layer 32 formed between the skin layer 10 and the mycelium fabric layer 40, and a second fiber reinforcement layer formed on the upper surface of the mycelium fabric layer 40 ( 34), each of which has a thickness of 0.5 mm to 1.0 mm to provide a thick and soft touch sensation.

The mycelium fabric layer 40 has a thickness of 0.4 mm, and the mushroom mycelium culture solution containing reishi mushrooms, oyster mushrooms, and plum mushrooms is adsorbed to the fabric layer made of polyester or cotton, thereby promoting the proliferation of the mushroom mycelium. It is a component that allows the surface texture of vegan leather to have the texture of leather.

Here, the mycelium fabric layer 40 is configured to allow proliferation of mushroom mycelium by adsorption of the seed culture medium, but is not limited to this. Mushroom mycelium powder made of the seed culture medium is applied and proliferation is achieved. It may be configured to hold.

Here, the vegan leather forms a coating layer on the top and bottom of the mycelium fabric layer 40, and the coating layer may be composed of a skin layer 10, an adhesive layer 20, and a fiber reinforcement layer 30.

Hereinafter, the method for manufacturing vegan leather using mushroom mycelium according to the first embodiment of the present invention will be described with reference to FIG. 2.

The method of manufacturing vegan leather using mushroom mycelium according to the first embodiment of the present invention first performs a seed culture preparation step (S110) of preparing a seed culture of mushroom mycelium to be adsorbed to the fabric layer.

In the seed culture preparation step (S110), the mushroom mycelium of one or two or more subcultures of reishi mushroom, oyster mushroom, or columbine mushroom is added to PDB (Potato Dextrose Broth) nutrient medium and cultured for a certain period of time to prepare a seed culture medium. This is the step.

This seed culture preparation step (S110) involves adding 1,000 mL of distilled water and 24 g of PDB reagent to an Erlenmeyer flask and mixing them (S112).

At this time, the PDB reagent may be a mixture of potato, glucose, and sugar in a weight ratio of 10:1:1, respectively, but is not limited to this.

In addition, in the seed culture preparation step (S110), after mixing distilled water and PDB reagent is completed, the PDB mixture is placed in an autoclave and sterilized at 121°C for 15 minutes to form a PDB medium. (S114) )

In addition, in the seed culture preparation step (S110), the sterilized PDB medium is naturally cooled until the temperature reaches 25°C, and the subcultured mushroom mycelium is added to the cooled PDB medium and cultured. (S116)

At this time, in step S116, the mushroom mycelium introduced into the PDB medium is 2 × 2 It is composed of different sizes, and it would be desirable to culture the PDB medium into which the mushroom mycelium was added for 48 to 72 hours while maintaining the temperature at 20°C to 25°C.

In addition, in step S116, if the set temperature is maintained below 20°C or above 25°C, the culture efficiency of mushroom mycelium is reduced and there is a risk of growth of miscellaneous bacteria, especially when the temperature is lower than 20°C by more than 3°C. Alternatively, if the temperature is maintained from 25°C to 2°C or higher, there is a problem in that mushroom mycelium is not cultured.

In addition, in the S116 step, if the minimum incubation time is less than 48 hours, sufficient mycelium is not absorbed into the fabric, and if it exceeds 72 hours, there is a risk that miscellaneous bacteria such as mold will proliferate due to loss of balance due to dead cells. Therefore, in the present invention, the culture is configured to be performed for a minimum of 48 hours and a maximum of less than 72 hours.

Here, in the seed culture preparation step (S110), the step of preparing mushroom mycelium powder by powdering the seed culture may be further performed.

On the other hand, the method of manufacturing vegan leather using mushroom mycelium according to the first embodiment of the present invention includes performing the seed culture preparation step and then performing the step of manufacturing mushroom mycelium fabric using the prepared seed culture (S120).

The mushroom mycelium fabric manufacturing step (S120) involves impregnating a fabric made of either polyester or cotton into the seed culture solution prepared through step S110 so that the seed culture solution adsorbs and proliferates on the fabric, forming the surface of the fabric. This is the step of converting to leather texture.

As shown in FIG. 4, this mushroom mycelium fabric manufacturing step (S120) performs a fabric cutting step (S122) of cutting the fabric to which mushroom mycelium is to be adsorbed to a certain size, and the fabric produced by the above-described step S110 is performed. Perform the step of sterilizing the seed culture and fabric. (S124)

At this time, step S124 may be configured to place the seed culture medium and the fabric in an autoclave and then sterilize them for 15 minutes while maintaining a temperature of 121°C.

Thereafter, in a step to be described later, the PDB medium to be mixed at a certain ratio with the seed culture is cooled, and at the same time, the container into which the sterilized fabric will be placed is sterilized (S126).

In step S126, the PDB medium can be naturally cooled to 25°C under aseptic conditions, and in the case of a container into which the fabric will be placed, a sterilizing solution consisting of 70% by weight of alcohol and 30% by weight of purified water is added to the container. It can be configured to be sterilized by putting it in.

Thereafter, the sterilized fabrics are placed in a sterilized container so that they can be stacked one by one, and a mixture of the naturally cooled PDB medium and the seed culture medium at a certain weight ratio is added to the container to impregnate the fabric, A step is performed to ensure that the mushroom mycelium contained in the mixed solution is cultured on the impregnated fabric (S128).

In step S128, PDB medium and seed culture may be mixed at a weight ratio of 2:1 and added to the container until the fabric is completely submerged.

In addition, in step S128, after impregnation of the fabric, culturing for 72 to 120 hours while maintaining the internal temperature of the container at a constant temperature of 20 ℃ to 25 ℃ so that the mushroom mycelium can be stably cultured You can make this happen.

At this time, in the S128 step, if the set temperature is lower than 20℃ or maintained above 25℃, the culture efficiency of mushroom mycelium is reduced and there is a risk of growth of miscellaneous bacteria, especially when the temperature is lower than 20℃ by more than 3℃. Alternatively, if the temperature is maintained from 25°C to 2°C or higher, the mushroom mycelium may not be cultured, and if the culture time is less than 72 hours, sufficient mycelium may not be absorbed into the fabric, 120 If the time is exceeded, there may be a risk of proliferation of various germs such as mold due to loss of balance due to dead bacteria.

Meanwhile, the method for manufacturing vegan leather using mushroom mycelium according to the first embodiment of the present invention includes drying the mushroom mycelium fabric after the mushroom mycelium fabric manufacturing step (S130).

In the mushroom mycelium fabric drying step (S130), the cultured mushroom mycelium fabric is sterilized at 121°C for 15 minutes using an autoclave, and then the sterilized mushroom mycelium fabric is dried using a dry oven at 50°C ~ This is the step of drying at a temperature of 80°C for 2 to 15 hours.

At this time, in the mushroom mycelium fabric drying step (S130), if the drying temperature is low, the drying time is inevitably long, which has the problem of reducing the efficiency of the mycelium for absorbing the fabric, and contamination and deterioration due to the growth of miscellaneous bacteria may occur. There is a concern that high temperatures or long periods of time may deteriorate the texture of the surface area of the mycelium fabric.

In addition, the method of manufacturing vegan leather using mushroom mycelium according to the first embodiment of the present invention includes drying the mushroom mycelium fabric and then performing the step of leathering the mushroom mycelium fabric (S140).

At this time, the mushroom mycelium fabric leathering step (S140) is a step of sequentially performing purification, softener treatment, and dyeing of the dried mushroom mycelium fabric. First, as shown in FIG. 5, the mushroom mycelium fabric is purified. Perform the instructed steps (S142)

The mushroom mycelium fabric refining step (S142) is a step in which proteins, amino acids, minerals, and vitamins that are unnecessary for the mushroom mycelium fabric to provide a leather texture are removed from the water-insoluble proteins.

This mushroom mycelium fabric purification step (S142) is a step of impregnating the mushroom mycelium fabric in purified water containing protease, purifying it at 30°C for 120 minutes, and then washing it.

At this time, the proteolytic enzyme may be mixed at 0.5% by weight per 200g of purified water, but is not limited to this.

Thereafter, the mushroom mycelium fabric purification step (S142) is performed by treating the purified mushroom mycelium fabric with a softener, thereby performing a mushroom mycelium fabric softener treatment step (S144) to improve the flexibility of the mushroom mycelium fabric.

Here, in the mushroom mycelium fabric softener treatment step (S144), glycerol can be used as a softener, and the mushroom mycelium fabric is impregnated in purified water containing the glycerol, treated at 60°C for 60 minutes, and then washed. This is the step.

At this time, the glycerol may be included in an amount of 1% by weight per 200g of purified water, but is not limited thereto.

Thereafter, by performing a mushroom mycelium fabric dyeing step (S146) in which the softener-treated mushroom mycelium fabric is dyed in various colors, as shown in Figure 6, the surface of the mushroom mycelium fabric is configured to provide a leather texture. .

At this time, in the mushroom mycelium fabric dyeing step (S146), the dyed mushroom mycelium fabric may be dried at 60°C.

In addition, the method of producing vegan leather using mushroom mycelium according to the first embodiment of the present invention involves homogenizing the surface of the mushroom mycelium fabric after the mushroom mycelium fabric leathering step and coating the homogenized mushroom mycelium fabric. Perform the steps (S150)

First, the surface homogenization step of the mushroom mycelium fabric, in which the surface of the mushroom mycelium fabric that has been leathered is flattened using roll ironing to remove wrinkles in the mushroom mycelium fabric that occur when leathering is performed to homogenize the surface. Perform.

Afterwards, a coating step is performed to coat the surface homogenized mushroom mycelium fabric.

Here, the coating step is a step of forming a fiber reinforcement layer 30 and a skin layer 10 on the mycelium fabric layer 40 composed of mushroom mycelium fabric whose surface homogenization has been completed. First, the mycelium fabric layer 40 is coated with a composite material. The step of manufacturing the skin layer 10 to be formed is performed (S152).

In the skin layer manufacturing step (S152), an adhesive layer 20, preferably a first adhesive layer 22, is formed on a polyurethane sheet coated with pigments of various colors, and a fiber reinforcement layer ( This is the step of adhering the first fiber reinforcement layer 32 of 30).

In this skin layer manufacturing step (S152), a seed culture medium containing mushroom mycelium including reishi mushrooms, oyster mushrooms, and plum mushrooms in the adhesive layer 20, or mushroom mycelium powder made of the seed culture medium is used as an adhesive. Steps are taken to ensure that the total weight is less than 1% by weight.

Thereafter, an adhesive mixed with the seed culture medium or mushroom mycelium powder is applied to the upper surface of the polyurethane sheet to a certain thickness to form a first adhesive layer 22, and the first adhesive layer 22 is applied to the top of the first adhesive layer 22. 1. The step of manufacturing the skin layer 10 is performed by adhering the fiber reinforcement layer 32.

In addition, in the coating step, after the skin layer manufacturing step (S152), the adhesive is used so that a second adhesive layer 24 of the same form as the first adhesive layer 22 is formed on the lower surface of the mycelium fabric layer 40. is applied, and then a lower coating layer forming step is performed in which the upper surface of the first fiber reinforcement layer 32 adhered to the skin layer 10 is adhered to the second adhesive layer 24.

In addition, in the coating step, after the lower coating layer forming step, a second fiber reinforcement layer 34 made of the same material and shape as the first fiber reinforcement layer 32 is combined with the upper surface of the mycelium fabric layer 40 to form an upper layer. An upper coating layer forming step (S156) to form a coating layer is performed.

That is, the vegan leather according to the first embodiment of the present invention forms an upper coating layer and a lower coating layer on the upper and lower parts of the mycelium fabric layer 40, which means that the mushroom mycelium fabric has a thickness of 0.4 mm. Because it is thinner than the 1.2mm to 1.4mm thickness of leather fabric used in general fashion materials, shape retention and physical properties are poor after product processing, and quality problems such as surface lifting problems may occur when directly coated on woven fabric units. To solve this problem, a 0.5 mm ± 0.1 mm fiber reinforcement layer made of polyester is formed on the top and bottom of the mycelium fabric layer 40.

Hereinafter, the vegan leather using mushroom mycelium and its manufacturing method according to the second embodiment of the present invention will be described with reference to FIGS. 8 and 9.

As shown in Figure 8, the vegan leather using mushroom mycelium according to the second embodiment of the present invention includes a skin layer 10 and an adhesive layer containing mushroom mycelium at a certain weight ratio applied to the top of the skin layer 10 ( 20) and a fiber reinforcement layer 30 bonded by the adhesive layer 20.

At this time, in the vegan leather according to the second embodiment of the present invention, the skin layer 10 may be configured in the same way as the skin layer 10 described through the first embodiment.

In addition, the adhesive layer 20 may be configured to mix mushroom mycelium at 5% by weight based on the total weight of the adhesive, and may be composed of first and second adhesive layers 22 and 24, similar to the first embodiment. You can.

Additionally, the fiber reinforcement layer 30 may also be composed of first and second fiber reinforcement layers 32 and 34, similar to the first embodiment.

The vegan leather according to the second embodiment of the present invention is a seed culture medium containing mushroom mycelium including reishi mushrooms, oyster mushrooms, and columbine mushrooms on the upper surface of the skin layer 10, or the seed culture medium. A first adhesive layer (22) containing 5% by weight of mushroom mycelium powder mixed is applied, and a first fiber reinforcement layer (32) is laminated on top of the first adhesive layer (22).

In addition, in the vegan leather according to the second embodiment of the present invention, a second adhesive layer 24 is applied to the upper surface of the first fiber reinforcement layer 32, and a second fiber is applied to the upper surface of the second adhesive layer 24. The reinforcement layer 34 is configured to be adhered.

In addition, the method for producing vegan leather according to the second embodiment of the present invention, as shown in FIG. 9, involves preparing a seed culture medium of mushroom mycelium to be mixed into the adhesive, similar to the first embodiment. Step S210 is performed.

Here, in the seed culture preparation step (S210), a step of preparing mushroom mycelium powder by powdering the seed culture may be further performed.

Thereafter, the seed culture medium or mushroom mycelium powder is mixed with the adhesive at 5% by weight based on the total weight of the adhesive. (S220)

Next, an adhesive mixed with the seed culture medium or mushroom mycelium powder is applied to the upper surface of the polyurethane sheet to form a first adhesive layer 22, and a sheet of polyester is placed on top of the first adhesive layer 22. A lower vegan leather manufacturing step is performed to form the lower layer of the vegan leather by adhering the first fiber reinforcement layer 32 made of (S230).

Next, an adhesive is applied to the upper surface of the first fiber reinforcement layer 32 to form a second adhesive layer 24, and the second fiber reinforcement layer 34 is adhered to the upper surface of the second adhesive layer 24 to form a vegan adhesive. Perform the upper vegan leather manufacturing step to form the upper layer of leather (S240).

The above description is merely an illustrative explanation of the technical idea of the present invention, and various modifications and variations will be possible to those skilled in the art without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

10: Skin layer
20: Adhesive layer
22: First adhesive layer
24: Second adhesive layer
30: Fiber reinforcement layer
32: First fiber reinforcement layer
34: Second fiber reinforcement layer
40: Mycelium fabric layer

Claims (15)

Mycelium fabric layer in which mushroom mycelium is cultured and proliferated;
A first fiber reinforcement layer formed below the mycelium fabric layer;
a skin layer formed on the lower surface of the first fiber reinforcement layer;
A second fiber reinforcement layer formed on top of the mycelium fabric layer; and
An adhesive layer consisting of a first adhesive layer formed between the skin layer and the first fiber reinforcement layer, and a second adhesive layer formed between the mycelium fabric layer and the first fiber reinforcement layer.
The adhesive layer is a seed culture medium in which mushroom mycelium is cultured, or mushroom mycelium powder consisting of the seed culture medium is mixed in a weight ratio of less than 1% by weight or 5% by weight based on the total weight of the adhesive Mushroom, characterized in that Vegan leather using mycelium.
According to paragraph 1,
Vegan leather using mushroom mycelium, characterized in that the skin layer is a polyurethane sheet coated with pigment with a thickness of less than 0.1 mm.
According to paragraph 2,
The skin layer is a vegan leather using mushroom mycelium, characterized in that the glossy layer is further formed so that the surface is glossy after the pigment is coated.
According to paragraph 1,
Vegan leather using mushroom mycelium, wherein the first and second fiber reinforcement layers have a thickness of 0.5 mm to 1.0 mm.
According to paragraph 1,
The mycelium fabric layer is made of polyester material or cotton material with a thickness of 0.4 mm, and is a mushroom mycelium, characterized in that the seed culture medium in which reishi mushrooms, oyster mushrooms, and plum mushrooms are cultured, or mushroom mycelium powder is adsorbed. Vegan leather using.
In the method of manufacturing vegan leather using mushroom mycelium,
(a) preparing a seed culture by adding any one of reishi mushrooms, oyster mushrooms, and columbine mushrooms, or two or more subcultured mushroom mycelia to PDB (Potato Dextrose Broth) nutrient medium and culturing them for a certain period of time;
(b) after step (a), preparing a mushroom mycelium fabric by adding the fabric to the seed culture medium so that the mushroom mycelium is adsorbed to the fabric and cultured and multiplied;
(c) After step (b), the mushroom mycelium fabric is sterilized at 121°C for 15 minutes using an autoclave, and then the sterilized mushroom mycelium fabric is dried at 50°C to 80°C using a dry oven. Drying at a temperature for 2 to 15 hours;
(d) after step (c), leathering the mushroom mycelium fabric;
(e) After step (d), homogenizing the surface of the mushroom mycelium fabric and coating the mushroom mycelium fabric formed with a homogenizer;
A method for manufacturing vegan leather using mushroom mycelium, comprising:
According to clause 6,
In step (a),
(a1) mixing 1,000 mL of distilled water and 24 g of PDB reagent in which potato, glucose, and sugar are mixed in a weight ratio of 10:1:1;
(a2) forming a PDB medium by placing the PDB mixture in an autoclave and sterilizing it at 121°C for 15 minutes;
(a3) naturally cooling the PDB medium until the temperature reaches 25°C, and culturing the mushroom mycelium subcultured in the cooled PDB medium at a temperature of 20°C to 25°C for 48 to 72 hours;
A method for manufacturing vegan leather using mushroom mycelium, comprising:
According to clause 6,
In step (b),
(b1) cutting the fabric to a certain size;
(b2) Putting the seed culture and the fabric into an autoclave and sterilizing them for 15 minutes while maintaining the temperature at 121°C;
(b3) preparing a mixed solution by mixing the PDB medium and the seed culture medium at a weight ratio of 2:1, and impregnating the fabric with the mixed solution to cultivate the mushroom mycelium contained in the mixed solution;
A method for manufacturing vegan leather using mushroom mycelium, comprising:
According to clause 8,
In step (a),
Step (b3) is a method of manufacturing vegan leather using mushroom mycelium, characterized in that the culture is carried out for 72 hours to 120 hours while maintaining a constant temperature of 20 ℃ to 25 ℃.
According to clause 6,
In step (d),
(d1) purifying the mushroom mycelium fabric to remove proteins contained in the mushroom mycelium fabric;
(d2) after step (d1), treating the mushroom mycelium fabric with a softener;
(d3) after step (d2), dyeing the mushroom mycelium fabric;
(d4) after step (d3), drying the mushroom mycelium fabric at 60°C;
A method for manufacturing vegan leather using mushroom mycelium, comprising:
According to clause 6,
In step (e),
(e1) flattening the surface of the mushroom mycelium fabric;
(e2) After step (e1), mixing seed culture medium or mushroom mycelium powder consisting of the seed culture medium in an amount of less than 1% by weight based on the total weight of the adhesive to produce a mushroom mycelium adhesive;
(e3) after step (e2), applying the mushroom mycelium adhesive to the polyurethane sheet and adhering the polyester sheet to form a first fiber reinforcement layer;
(e4) After step (e3), applying the mushroom mycelium adhesive to the upper surface of the first fiber reinforcement layer and adhering it to the lower surface of the mushroom mycelium fabric layer made of the mushroom mycelium fabric to form a lower coating layer;
(e5) After step (e4), forming a top coating layer made of a second fiber reinforcement layer by combining a polyester sheet with the upper surface of the mushroom mycelium fabric layer 40;
A method for manufacturing vegan leather using mushroom mycelium, comprising:
According to clause 6,
In step (e),
(e1) flattening the surface of the mushroom mycelium fabric;
(e2) After step (e1), mixing the seed culture medium or mushroom mycelium powder consisting of the seed culture liquid in an amount of 5% by weight based on the total weight of the adhesive to prepare a mushroom mycelium adhesive;
(e3) after step (e2), applying the mushroom mycelium adhesive to the polyurethane sheet and adhering the polyester sheet to form a first fiber reinforcement layer;
(e4) After step (e3), applying the mushroom mycelium adhesive to the upper surface of the first fiber reinforcement layer and adhering it to the lower surface of the mushroom mycelium fabric layer made of the mushroom mycelium fabric to form a lower coating layer;
(e5) After step (e4), forming a top coating layer made of a second fiber reinforcement layer by combining a polyester sheet with the upper surface of the mushroom mycelium fabric layer 40;
A method for manufacturing vegan leather using mushroom mycelium, comprising:
A skin layer made of polyurethane sheet;
An adhesive layer in which a seed culture medium containing mushroom mycelium including reishi mushrooms, oyster mushrooms, and plum mushrooms, or mushroom mycelium powder consisting of the seed culture liquid is mixed at 5% by weight based on the total weight%;
It includes first and second fiber reinforcement layers that are adhered to the skin layer by the adhesive layer and are made of a polyester sheet,
The first fiber reinforcement layer is adhered to the adhesive layer applied on the upper part of the skin layer, and the second fiber reinforcement layer is adhered to the first fiber reinforcement layer by applying the adhesive layer to the lower surface. Mushroom mycelium Vegan leather using.
In the method of manufacturing vegan leather using mushroom mycelium,
(a) preparing a seed culture by adding any one of reishi mushrooms, oyster mushrooms, and columbine mushrooms, or two or more subcultured mushroom mycelia to PDB (Potato Dextrose Broth) nutrient medium and culturing them for a certain period of time;
(b) after step (a), mixing the seed culture medium with the adhesive at 5% by weight based on the total weight of the adhesive;
(c) After step (b), the adhesive is applied to the upper surface of the polyurethane sheet to form a first adhesive layer, and a first fiber reinforcement layer made of a polyester sheet is adhered to the top of the first adhesive layer. Forming a lower layer of vegan leather;
(d) After step (c), the adhesive is applied to the upper surface of the first fiber reinforcement layer to form a second adhesive layer, and a sheet of polyester material is adhered to the upper surface of the second adhesive layer to form the second fiber. Forming an upper layer of vegan leather consisting of a reinforcing layer;
A method for manufacturing vegan leather using mushroom mycelium, comprising:
According to claim 6 or 14,
Each of the above step (a) is a method of producing vegan leather using mushroom mycelium, characterized in that the step of producing mushroom mycelium powder by powdering the prepared seed culture.