WO2023195584A1 - Method for manufacturing marine-derived biomass film - Google Patents

Abstract

Provided is a method for manufacturing a marine-derived biomass film capable of precisely adjusting the thickness of a marine-derived biomass film. According to an embodiment of the present invention, provided is a method for manufacturing a marine-derived biomass film using a film manufacturing device comprising a film forming part, a thickness adjusting part connected to the film forming part, and a drying part connected to the thickness adjusting part, the method for manufacturing a marine-derived biomass film comprising the steps of: (S1) applying a first curing agent to a first transfer felt that enters the film forming part; (S2) forming a first film by applying a composition for forming a marine-derived biomass film on the first transfer felt to which the first curing agent has been applied; and (S3) forming a second film by applying a second curing agent identical to or different from the first curing agent on the first film, wherein the film forming part comprises therein the composition for forming a marine-derived biomass film.

Description

Manufacturing method of marine-derived biomass film

The present invention relates to a method of manufacturing a marine-derived biomass film, and more specifically, to a method of manufacturing a marine-derived biomass film that can reduce product production costs and shorten the process time.

Alginic acid is a marine-derived biomass (natural copolymer) that easily reacts with metal ions in salts to form various types of alginates for commercial use.

Sodium alginate (SA), one of the alginate salts, has the property of easily absorbing a large amount of water and forming a high viscosity solution, so even if the existing polymer film production process or papermaking process is applied, a thin and uniform alginate film can be continuously produced. There were problems with producing it.

Prior literature on producing films using sodium alginate only presents the production of simple films at the lab-scale level, and even if the entire process was presented, the thickness of the film could not be precisely controlled from the first sample solution. Research on possible processes and equipment is insufficient.

For example, Republic of Korea Patent Publication No. 10-2016-0055973 (International Publication on November 15, 2012) is an invention regarding a film having an alginate film layer and a method for manufacturing the same, using a film carrier to absorb liquid. Although a method of manufacturing a film having an algenate film processed by two separate continuous coating processes is disclosed, a method of precisely controlling the thickness of the algenate film from the first sample solution or manufacturing a thin algenate film is disclosed. There is not.

The purpose of the present invention is to provide a method for manufacturing a marine-derived biomass film that can precisely control the thickness of the marine-derived biomass film.

Another object of the present invention is to provide a method for manufacturing a marine-derived biomass film that can reduce production costs and shorten the process time by manufacturing in a continuous roll-to-roll process.

Another object of the present invention is to provide a film manufacturing apparatus capable of implementing the method for manufacturing the marine-derived biomass film.

The objects of the present invention are not limited to the objects mentioned above, and other objects and advantages of the present invention that are not mentioned can be understood by the following description and will be more clearly understood by the examples of the present invention. Additionally, it will be readily apparent that the objects and advantages of the present invention can be realized by means and combinations thereof as set forth in the claims.

One embodiment of the present invention for achieving the above object is the production of a marine-derived biomass film using a film manufacturing apparatus including a film forming unit, a thickness adjusting unit connected to the film forming unit, and a drying unit connected to the thickness adjusting unit. in a way,

(S1) applying a first curing agent to the first transfer felt entering the film forming unit;

(S2) forming a first film by applying a composition for forming a marine-derived biomass film on the first transfer felt to which the first curing agent is applied; and

(S3) comprising forming a second film by applying a second curing agent that is the same as or different from the first curing agent on the first film,

The film forming unit provides a method of manufacturing a marine-derived biomass film containing the composition for forming the marine-derived biomass film therein.

According to one embodiment of the present invention, the film forming unit includes a first adjusting unit that adjusts the thickness of the first film; a second control unit that adjusts the width of the first film; and a dam opposite to the first adjustment unit.

According to one embodiment of the present invention, the method of applying the first and second curing agents may be a spray method.

According to one embodiment of the present invention, the method for producing a marine-derived biomass film of the present invention may further include (S4) adjusting the thickness of the second film in the thickness adjustment unit.

According to one embodiment of the present invention, the thickness adjusting unit includes a calendering roll (gap roll) that applies pressure to the surface of the second film, and the thickness of the second film whose thickness is adjusted is 0.01 to 1.00 cm. You can.

According to one embodiment of the present invention, the moving speeds of the first and second transfer felts may each independently be 10 cm/min to 500 m/min.

According to one embodiment of the present invention, the method for producing a marine-derived biomass film of the present invention may further include (S5) drying the second film whose thickness is adjusted in the drying unit.

According to one embodiment of the present invention, step (S5) may be a step using any one selected from the group consisting of an infrared drying method, a hot air drying method, and a combination thereof.

According to one embodiment of the present invention, the drying unit may include a tunnel through which the second film passes.

According to one embodiment of the present invention, the method for producing a marine-derived biomass film of the present invention further includes the step of (S6) rewinding the dried second film in a rewinding unit connected to the drying unit, , the rewinding unit may include a profile controller attached to the front end of the roll on which the dried second film is wound.

The solution to the above problem does not enumerate all the features of the present invention. The various features of the present invention and its advantages and effects can be understood in more detail by referring to the specific examples below.

According to one embodiment of the present invention, a manufacturing method is provided in which the production cost of the product is reduced and the process time is shortened by drying a composition for forming a high-viscosity marine-derived biomass film and continuously producing it in the form of a film wound on a roll. You can.

Additionally, according to an embodiment of the present invention, the thickness of the marine-derived biomass film can be uniformly adjusted. This method of manufacturing marine-derived biomass films can be easily applied to large-scale mass production processes.

In addition to the above-described effects, specific effects of the present invention are described below while explaining specific details for carrying out the invention.

Figure 1 is a cross-sectional view of a film manufacturing apparatus for implementing a method for manufacturing a marine-derived biomass film according to an embodiment of the present invention.

Figure 2 is an enlarged cross-sectional view of the film forming part of Figure 1.

Figure 3 is a flow chart showing a method of manufacturing a marine-derived biomass film according to another embodiment of the present invention.

Hereinafter, each configuration of the present invention will be described in more detail so that those skilled in the art can easily implement it. However, this is only an example, and the scope of rights of the present invention is determined by the following contents. Not limited.

Meanwhile, terms such as first or second may be used to describe various components, but these terms should be interpreted only for the purpose of distinguishing one component from other components. For example, a first component may be named a second component, and similarly, the second component may also be named a first component.

Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to designate the presence of the described features, numbers, steps, operations, components, parts, or combinations thereof, and are intended to indicate the presence of one or more other features or numbers, It should be understood that this does not exclude in advance the possibility of the presence or addition of steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art. Terms as defined in commonly used dictionaries should be interpreted as having meanings consistent with the meanings they have in the context of the related technology, and unless clearly defined in this specification, should not be interpreted in an idealized or overly formal sense. No.

One embodiment of the present invention is a method of producing a marine-derived biomass film using a film manufacturing device including a film forming unit, a thickness adjusting unit connected to the film forming unit, and a drying unit connected to the thickness adjusting unit,

(S1) applying a first curing agent to the first transfer felt entering the film forming unit;

(S2) forming a first film by applying a composition for forming a marine-derived biomass film on the first transfer felt to which the first curing agent is applied; and

(S3) comprising forming a second film by applying a second curing agent that is the same as or different from the first curing agent on the first film,

The film forming unit provides a method of manufacturing a marine-derived biomass film containing the composition for forming the marine-derived biomass film therein.

According to one embodiment of the present invention, a manufacturing method is provided in which the production cost of the product is reduced and the process time is shortened by drying a composition for forming a high-viscosity marine-derived biomass film and continuously producing it in the form of a film wound on a roll. You can. Additionally, according to an embodiment of the present invention, the thickness of the marine-derived biomass film can be uniformly adjusted.

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

Figure 1 is a cross-sectional view of a film manufacturing apparatus for implementing a method for manufacturing a marine-derived biomass film according to an embodiment of the present invention.

Figure 2 is an enlarged cross-sectional view of the film forming part of Figure 1.

Referring to Figures 1 and 2, the film manufacturing apparatus 100 for implementing the method for manufacturing a marine-derived biomass film according to the present invention includes a film forming part (FH) and a thickness adjusting part connected to the film forming part (FH). (20) and may include a drying unit (DR) connected to the thickness adjusting unit. In this specification, the meaning of 'connected' is defined to encompass not only the meaning of directly connecting one member to another member, but also the meaning of indirectly connecting one member.

The film forming part (FH) according to the present invention may be a member in which a film is formed by curing a composition for forming a marine-derived biomass film, which is a liquid sample in the form of a slurry.

The film manufacturing apparatus 100 according to the present invention has a first transfer felt supply unit (SF1) that supplies the first transfer felt (F1) to the film forming unit (FH) and a second transfer felt to the film forming unit (FH). It may include a second transfer felt supply unit (SF2) that supplies (F2). The first transfer felt (F1) and the second transfer felt (F2) may be made of, for example, polyester-based resin, polyamide-based resin, fluorine-based resin, or polycarbonate-based resin. The polyester-based resin may be, for example, polyethylene terephthalate (PET), and the fluorine-based resin may be, for example, polytetrafluoroethylene (PTFE).

The method for producing a marine-derived biomass film according to the present invention includes the step of (S1) applying a first curing agent to the first transfer felt (F1) entering the film forming portion (FH). Specifically, by applying the first curing agent on the surface of the first transfer felt, the slurry-type composition for forming a marine-derived biomass film can be well attached to the first transfer felt, and as a result, the reaction of forming a passive layer of the film proceeds. The first film can be well formed. The first curing agent is sucrose, lactose, maltose, MgCl ₂ , CaCl ₂ , sodium dodecyl sulfate, amine-based compound, and ethoxyl. It may be a solution containing one or more components selected from the group consisting of ethoxylate-based compounds.

On the other hand, the method for producing a marine-derived biomass film according to the present invention, depending on the components of the desired marine-derived biomass film, does not perform the step of applying a first curing agent (S1), but uses a composition for forming a marine-derived biomass film. The first film can be formed by immediately applying it on the first transfer felt (F1).

The method for producing a marine-derived biomass film according to the present invention is (S2) forming a first film by applying a composition for forming a marine-derived biomass film on the first transfer felt (F1) to which the first curing agent is applied. It includes steps to: The composition for forming a marine-derived biomass film can be well attached to the first transfer felt (F1) due to the first curing agent applied to the surface of the first transfer felt.

The method for producing a marine-derived biomass film according to the present invention includes the step of (S3) forming a second film by applying a second curing agent that is the same as or different from the first curing agent on the first film. The method of applying the first and second curing agents may be a spray method, and the spray device for implementing the spray method may be used at a point where the first and second transfer felt supply units and the film forming unit are connected or at the film forming unit depending on the purpose. Can be placed appropriately. Specifically, when the second curing agent is applied by a spray device, the second curing agent may be kept/stored in a dam structure, and the dam has a hole of a certain size so that the second curing agent is injected by spraying through the hole. It can be configured to be possible.

The method for producing a marine-derived biomass film according to the present invention includes the step of (S3) forming a second film by applying a second curing agent that is the same as or different from the first curing agent on the first film. The method of applying the first and second curing agents may be a spray method, and the spray device for implementing the spray method may be used at a point where the first and second transfer felt supply units and the film forming unit are connected or at the film forming unit depending on the purpose. Can be placed appropriately. Specifically, when the second curing agent is applied by a spray device, the second curing agent may be kept/stored in a dam structure, and the dam has a hole of a certain size so that the second curing agent is injected by spraying through the hole. It can be configured to be possible.

The film forming part (FH) according to the present invention includes the composition (L) for forming the marine-derived biomass film therein. Conventionally, due to the characteristics of alginate, which easily absorbs large amounts of water and forms a high viscosity solution, it is difficult to continuously produce thin films through the polymer film production process or papermaking process with a slurry-type composition for forming marine-derived biomass films. there was.

According to one embodiment of the present invention, a manufacturing method is provided in which the production cost of the product is reduced and the process time is shortened by drying a composition for forming a high-viscosity marine-derived biomass film and continuously producing it in the form of a film wound on a roll. You can. Additionally, according to an embodiment of the present invention, the thickness of the marine-derived biomass film can be uniformly adjusted.

The film forming part (FH) according to the present invention may include a passive layer forming part (CP) in which the composition for forming a marine-derived biomass film is cured. Specifically, the passive layer forming part (CP) may include a slurry-type composition for forming a marine-derived biomass film therein and a liquid first and second curing agent applied by a spray method.

Specifically, the composition for forming a marine-derived biomass film may include a seafood-derived polymer compound derived from seafood. The seafood may be any one selected from the group consisting of brown algae, red algae, green algae, and combinations thereof, and preferably brown algae. The brown algae may be, for example, seaweed, kelp, kelp, etc.

The seafood-derived polymer compound according to the present invention may be a polysaccharide extracted from seafood. Specifically, the seafood-derived polymer compound may be alginate, and more specifically, the alginate may be sodium alginate or potassium alginate.

The weight average molecular weight of the alginate may be 10,000 to 100,000 g/mol, preferably 10,000 to 50,000 g/mol, and more preferably 10,000 to 30,000 g/mol. If the weight average molecular weight of the alginate is less than the above numerical range, the problem of lowering the strength of the marine-derived biomass film may occur, and if it exceeds the above numerical range, the viscosity of the composition for forming the marine-derived biomass film may become excessively high. .

The content of alginate according to the present invention may be 27 to 43% by weight, preferably 35 to 43% by weight, more preferably 40 to 42% by weight, based on the total weight of the composition for forming a marine-derived biomass film. It can be. When the alginate content is within the above numerical range, the biodegradability and physical properties of the marine-derived biomass film can be optimized.

The composition for forming a marine-derived biomass film according to the present invention may contain a plasticizer that lowers the viscosity of the composition and reduces deformation of the film due to external force. The plasticizer may include an alcohol-type compound. For example, the alcohol compound may be any one selected from the group consisting of glycerin, xylitol, mannitol, sorbitol, and combinations thereof.

The composition for forming a marine-derived biomass film may include 100 parts by weight of alginate and 60 to 200 parts by weight of a plasticizer. The content of the plasticizer may be preferably 60 to 100 parts by weight, more preferably 60 to 80 parts by weight, based on 100 parts by weight of the alginate. Only when the content of the plasticizer satisfies the above numerical range can the high rigidity and tensile strength of the marine-derived biomass film be realized.

The composition for forming a marine-derived biomass film according to another embodiment of the present invention may further include 40 to 110 parts by weight of an oil-based additive based on 100 parts by weight of the alginate. The oil-based additive may be used to control the rigidity of the film. The oil-based additive may include any one selected from the group consisting of oleic acid, linoleic acid, linolenic acid, stearic acid, palmitic acid, myristic acid, lauric acid, and combinations thereof. . For example, the oil-based additive may be sunflower seed oil. The content of the oil-based additive may preferably be 40 to 90 parts by weight, more preferably 40 to 80 parts by weight, based on 100 parts by weight of the alginate. Only when the content of the oil-based additive satisfies the above numerical range can high rigidity of the marine-derived biomass film be realized.

A composition for forming a marine-derived biomass film according to another embodiment of the present invention may further include 1 to 20 parts by weight of filler based on 100 parts by weight of the alginate. The filler can be added to increase the strength and rigidity of the marine-derived biomass film. The filler may be any one selected from the group consisting of protein-based additives, polysaccharide-based additives, and combinations thereof, and preferably may be a mixture of protein-based additives and polysaccharide-based additives. In this way, when two types of fillers are used, the strength and rigidity of the film can be further increased. According to an embodiment of the present invention using two types of protein-based additives and polysaccharide-based additives, the weight ratio of the polysaccharide-based additive to the protein-based additive (polysaccharide-based additive: protein-based additive) is 1: It may be 1 to 1:9, preferably 1:2 to 1:7, and more preferably 1:2 to 1:3. When the weight ratio of the polysaccharide-based additive and the protein-based additive is within the above numerical range, high rigidity, tensile strength, and elongation at break of the marine-derived biomass film can be realized.

The protein-based additive may be, for example, any one selected from the group consisting of whey protein, gelatin, soy protein, keratin, and combinations thereof. The molecular weight of the protein-based additive may be, for example, 15 to 75 kDa.

The polysaccharide-based additive may include any one selected from the group consisting of α-cellulose, β-cellulose, nanocellulose, starch, and combinations thereof. The molecular weight of the polysaccharide-based additive may be, for example, 15 to 75 kDa. The polysaccharide-based additive may be starch containing a large amount of starch. The starch may be, for example, common corn starch, potato starch, cassava starch, etc.

The content of the filler may be preferably 2 to 10 parts by weight, more preferably 2 to 5 parts by weight, based on 100 parts by weight of the alginate. Only when the content of the filler satisfies the above numerical range can the strength and rigidity of the marine-derived biomass film be improved.

The composition for forming a marine-derived biomass film according to another embodiment of the present invention may further include 1 to 5 parts by weight of a moisture barrier additive based on 100 parts by weight of the alginate. The moisture barrier additive may be added as needed to provide barrier properties against moisture. The content of the moisture barrier additive can be adjusted appropriately. For example, the moisture barrier additive may be mica with a particle size of 1 to 10 μm (micrometer).

As shown in Figure 2, the film forming part (FH) according to the present invention includes a first adjusting part 12 that adjusts the thickness of the first film, adjusts the width of the first film, and marine-derived biomass. It may include a second control unit that prevents external leakage of the film forming composition (L) and a dam 14 opposite the first control unit 12. The first adjusting part 12 may be, for example, a doctor blade, and the second adjusting part may be, for example, a side guard. Due to the first control unit and the second control unit, the width and thickness of the film can be precisely adjusted. The dam 14 is a structure that has a volume capable of storing a certain amount of sample, and serves as a structure that assists injection while maintaining a constant input of a certain volume of sample to stably form a film.

Meanwhile, according to another embodiment of the present invention, in addition to using the doctor blade described above, the film forming unit (FH) uses a comma coater composed of several rolls to form the first film to a certain thickness. A casting method can be adopted (not shown).

Specifically, the film manufacturing apparatus 100 according to the present invention may include a first roll for supplying a film forming composition to the film forming unit (FH) and a second roll for supplying a substrate to the film forming unit (FH). You can. The first roll and the second roll may include, for example, tungsten carbide (WC) in consideration of wear resistance and oxidation resistance.

The method of manufacturing a marine-derived biomass film according to the present invention may further include (S4) adjusting the thickness of the second film in the thickness adjustment unit 20. Specifically, the thickness adjusting unit 20 may include a calendering roll (gap roll) that applies pressure to the surface of the second film, and the thickness of the second film whose thickness is adjusted may be 0.01 to 1.00 cm. there is. Calendering rolls can be used to apply pressure to both surfaces of the laminate passing between two rolls. The laminate may be composed of a first transfer felt, a second transfer felt, and a second film interposed between the first transfer felt and the second transfer felt. By applying pressure to both surfaces of the laminate, the thickness of the second film can be precisely adjusted according to the purpose.

That is, the second film may be interposed between the first transfer felt and a second transfer felt that is different from the first transfer felt. The moving speed of the first and second transfer felts may each independently be 10 cm/min to 500 m/min, specifically 10 m/min to 200 m/min, and more specifically 50 m/min to 150 m/min. It can be. For example, it may be desirable in the process that the moving speeds of the first and second transfer felts are the same.

According to another embodiment of the present invention, the first and second transfer felts may each independently include pores of 150 to 250 mesh. Specifically, because the first and second transfer felts include pores in the above size range, the solvent contained in the film can be effectively vaporized.

The method for producing a marine-derived biomass film according to the present invention may further include (S5) drying the second film whose thickness is adjusted in the drying unit (DR). Specifically, the step (S5) may be a step using any one selected from the group consisting of an infrared drying method, a hot air drying method, and a combination thereof, and preferably a step using a combination thereof.

By using the infrared drying method and the hot air drying method simultaneously, the solvent remaining in the second film can be effectively removed, and as a result, the thickness of the marine-derived biomass film can be precisely controlled.

The drying unit (DR) according to the present invention may include a tunnel (TN) through which the second film passes. For example, the tunnel TN may be a profile that defines a space through which the laminate passes. The internal temperature of the tunnel TN may be adjusted to, for example, 60 to 200°C. If necessary, the drying unit DR may additionally include piping to help hot air reflux.

The laminate can pass through the tunnel (TN) due to the roll (R).

The drying unit (DN) according to the present invention may be disposed at regular intervals on the upper and lower surfaces of the inner peripheral surface of the tunnel (TN). Specifically, the drying unit DN can effectively dry the second film by being disposed on the inner peripheral surface of the tunnel TN.

The method for producing a marine-derived biomass film according to the present invention may further include (S6) the step of rewinding the dried second film in a rewinding unit (RW) connected to the drying unit (DR). . Specifically, the rewinding unit (RW) may include a profile controller attached to the front end of the roll on which the dried second film is wound. The profile control unit can facilitate rewinding.

As shown in FIG. 1, the first transfer felt (F1) according to the present invention can be wound in a roll form on the first air shaft (AS1), and the second transfer felt (F2) is wrapped around the second air shaft (AS2). It can be wound in a roll shape, and the second film can be wound in a roll shape on the third air shaft (AS3). For example, the first to third air shafts (AS1, AS2, AS3) may be cylindrical, which allows the transfer felt and film to be easily wound into a roll shape.

Meanwhile, the rewinding unit (RW) of the present invention separates the dried second film, the first transfer felt (F1), and the second transfer felt (F2), and then separates the first transfer felt (F1) from the dried second film to create a new film. It may have a structure that circulates the second transfer felt (F2) back to the front end (not shown). In this way, by having a structure in which the first transfer felt (F1) and the second transfer felt (F2) are circulated to the front end, a continuous process is possible and the productivity of the marine-derived biomass film can be increased.

Figure 3 is a flow chart showing a method of manufacturing a marine-derived biomass film according to another embodiment of the present invention.

Referring to Figure 3, the method for manufacturing a marine-derived biomass film according to an embodiment of the present invention includes the steps of (a) applying a first curing agent to a first transfer felt entering the film forming unit by spraying; (b) forming a first film by applying a composition for forming a marine-derived biomass film on a first transfer felt coated with a first curing agent; (c) forming a second film by applying a second curing agent on the first film by spraying; (d) adjusting the thickness of the second film with a calendering roll; (e) drying the second film whose thickness is adjusted while passing it through an infrared and hot air tunnel; and (f) rewinding the dried second film.

According to another embodiment of the present invention, the present invention provides the film forming portion (FH), a thickness adjusting portion 20 connected to the film forming portion (FH), and a drying portion connected to the thickness adjusting portion 20 ( A method of manufacturing an eco-friendly film using a film manufacturing device including DR),

(Sa) forming a third film by applying a composition for forming a marine-derived biomass film on the first recycled felt; and

(Sb) immersing the third film in the first curing agent to form a fourth film,

The film forming unit may provide a method of manufacturing a marine-derived biomass film containing the composition for forming the marine-derived biomass film therein.

Here, the first circulating felt may circulate in an endless orbit.

The step of forming the fourth film may be performed in a dam 14 in the form of a water reservoir containing the first curing agent.

Other descriptions of the manufacturing method of the eco-friendly film are the same as described above.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements can be made by those skilled in the art using the basic concept of the present invention defined in the following claims. It falls within the scope of invention rights.

Claims (10)

A method for producing a marine-derived biomass film using a film manufacturing device including a film forming unit, a thickness adjusting unit connected to the film forming unit, and a drying unit connected to the thickness adjusting unit, (S1) applying a first curing agent to the first transfer felt entering the film forming unit; (S2) forming a first film by applying a composition for forming a marine-derived biomass film on the first transfer felt to which the first curing agent is applied; and (S3) forming a second film by applying a second curing agent that is the same as or different from the first curing agent on the first film; Including, The film forming unit, Containing the composition for forming the marine-derived biomass film therein Manufacturing method of marine-derived biomass film. According to paragraph 1, The film forming unit, a first control unit that adjusts the thickness of the first film; a second control unit that adjusts the width of the first film; and Comprising a dam opposite the first control unit Manufacturing method of marine-derived biomass film. According to paragraph 1, The method of applying the first and second curing agents is a spray method, Manufacturing method of marine-derived biomass film. According to paragraph 1, (S4) adjusting the thickness of the second film in the thickness adjustment unit; It further includes, The thickness control part, It includes a calendering roll that applies pressure to the surface of the second film, The thickness of the second film whose thickness is adjusted is, 0.01 to 1.00 cm Manufacturing method of marine-derived biomass film. According to paragraph 4, The second film is, Interposed between the first transfer felt and a second transfer felt different from the first transfer felt Manufacturing method of marine-derived biomass film. According to clause 5, The moving speed of the first and second transfer felts is, Each independently 10 cm/min to 1,000 cm/min Manufacturing method of marine-derived biomass film. According to paragraph 4, (S5) drying the second film whose thickness is adjusted in the drying unit; containing more Manufacturing method of marine-derived biomass film. In clause 7, In the step (S5), A step of using any one selected from the group consisting of an infrared drying method, a hot air drying method, and a combination thereof, Manufacturing method of marine-derived biomass film. In clause 7, The drying part, Comprising a tunnel through which the second film passes inside Manufacturing method of marine-derived biomass film. In clause 7, (S6) rewinding the dried second film in a rewinding unit connected to the drying unit; It further includes, The rewinding unit, Comprising a profile controller attached to the front end of the roll on which the dried second film is wound. Manufacturing method of marine-derived biomass film.

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