Manufacturing method of marine-originated biomass film

Abstract

A method for manufacturing a marine-derived biomass film capable of precisely controlling the thickness of the marine-derived biomass film is provided. One embodiment of the present invention provides a method for manufacturing a marine-derived biomass film using a film manufacturing apparatus comprising a film forming unit, a thickness control unit connected to the film forming unit, and a drying unit connected to the thickness control unit, comprising: (S1) a step of applying a first curing agent to a first transfer felt that enters the film forming unit; (S2) a step of forming a first film by applying a composition for forming a marine-derived biomass film onto the first transfer felt on which the first curing agent has been applied; and (S3) a step of forming a second film by applying a second curing agent that is identical or different from the first curing agent onto the first film, wherein the film forming unit contains the composition for forming a marine-derived biomass film within it.

Description

Technology Field

[0001] The present invention relates to a method for manufacturing a marine-derived biomass film, and more specifically, to a method for manufacturing a marine-derived biomass film that can reduce production costs and shorten process time. Background Technology

[0003] Alginate is a marine-derived biomass (natural copolymer) that readily reacts with metal ions in salts to form various types of alginates for commercial use.

[0004] Sodium alginate (SA), one of the alginate salts, has the characteristic of easily absorbing a large amount of water to form a high-viscosity solution, so it has been difficult to continuously produce thin and uniform alginate films even when applying existing polymer film production processes or paper manufacturing processes.

[0005] Prior literature on manufacturing films using sodium alginate only presents the production of simple films at the lab-scale level; even when the entire process is presented, research on processes and equipment capable of precisely controlling film thickness from the initial sample solution is insufficient.

[0006] For example, Korean Patent Publication No. 10-2016-0055973 (International publication dated November 15, 2012) is an invention relating to a film having an alginate film layer and a method for manufacturing the same. It discloses a method for manufacturing a film having an alginate film that uses a film carrier to absorb liquid and is processed by two separate continuous coating processes, but it does not disclose a method for precisely controlling the thickness of the alginate film from the initial sample solution or manufacturing a thin alginate film. Prior art literature

[0007] Republic of Korea Published Patent Application No. 10-2016-0055973 (Internationally published Nov. 15, 2012) The problem to be solved

[0008] The objective of the present invention is to provide a method for manufacturing a marine-derived biomass film capable of precisely controlling the thickness of the marine-derived biomass film.

[0009] Another objective of the present invention is to provide a method for manufacturing a marine-derived biomass film that can reduce production costs and shorten process time by manufacturing it using a continuous roll-to-roll process.

[0010] Another objective of the present invention is to provide a film manufacturing apparatus capable of implementing the method for manufacturing a marine-derived biomass film.

[0011] The objects of the present invention are not limited to those mentioned above, and other unmentioned objects and advantages of the present invention may be understood from the following description and will be more clearly understood by the embodiments of the present invention. Furthermore, it will be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof set forth in the claims. means of solving the problem

[0013] One embodiment of the present invention for achieving the above objective is a method for manufacturing a marine-derived biomass film using a film manufacturing apparatus comprising a film forming unit, a thickness control unit connected to the film forming unit, and a drying unit connected to the thickness control unit.

[0014] (S1) A step of applying a first curing agent to a first transfer felt that enters the film forming part;

[0015] (S2) A step of forming a first film by applying a composition for forming a marine-derived biomass film onto a first transfer felt coated with the first curing agent; and

[0016] (S3) A second curing agent identical or different from the first curing agent is applied to the first film to form a second film, and

[0017] The above film forming unit provides a method for manufacturing a marine-derived biomass film comprising a composition for forming a marine-derived biomass film within itself.

[0018] According to one embodiment of the present invention, the film forming unit includes a first adjusting unit for adjusting the thickness of the first film; a second adjusting unit for adjusting the width of the first film; and a dam facing the first adjusting unit.

[0019] According to one embodiment of the present invention, the method of applying the first and second curing agents may be a spray method.

[0020] According to one embodiment of the present invention, the method for manufacturing a marine-derived biomass film of the present invention may further include (S4) a step of adjusting the thickness of the second film in the thickness adjustment unit.

[0021] According to one embodiment of the present invention, the thickness adjustment unit includes a calendering roll (gap roll) that applies pressure to the surface of the second film, and the thickness of the second film with the adjusted thickness may be 0.01 to 1.00 cm.

[0022] According to one embodiment of the present invention, the movement speed of the first and second conveying felts may each be independently 10 cm / min to 500 m / min.

[0023] According to one embodiment of the present invention, the method for manufacturing a marine-derived biomass film of the present invention may further include the step of drying the second film with the controlled thickness in the drying section (S5).

[0024] According to one embodiment of the present invention, the step (S5) may be 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.

[0025] According to one embodiment of the present invention, the drying unit may include a tunnel through which the second film passes inside.

[0026] According to one embodiment of the present invention, the method for manufacturing a marine-derived biomass film of the present invention further comprises the step (S6) of rewinding the dried second film in a rewinding unit connected to the drying unit, and the rewinding unit may include a profile controller attached to the front end of a roll on which the dried second film is wound.

[0028] The means for solving the above problem do not enumerate all the features of the present invention. Various features of the present invention and the resulting advantages and effects can be understood in more detail by referring to the specific embodiments below. Effects of the invention

[0030] According to one embodiment of the present invention, a manufacturing method can be provided in which the production cost of a 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.

[0031] In addition, according to one embodiment of the present invention, the thickness of the marine-derived biomass film can be uniformly controlled. This method for manufacturing a marine-derived biomass film can be easily applied to large-scale mass production processes.

[0032] In addition to the effects described above, the specific effects of the present invention are described together with the following explanation of the specific details for implementing the invention. Brief explanation of the drawing

[0034] FIG. 1 is a cross-sectional view of a film manufacturing apparatus for implementing a method for manufacturing a marine-derived biomass film according to one embodiment of the present invention. Figure 2 is an enlarged cross-sectional view of the film forming portion of Figure 1. FIG. 3 is a flowchart illustrating a method for manufacturing a marine-derived biomass film according to another embodiment of the present invention. Specific details for implementing the invention

[0035] Hereinafter, each component of the present invention is described in more detail so that a person skilled in the art to which the present invention pertains can easily implement it; however, this is merely an example, and the scope of the rights of the present invention is not limited by the following.

[0036] Meanwhile, terms such as "first" or "second" may be used to describe various components, but these terms should be interpreted solely for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, a second component may be named a first component.

[0037] The singular expression includes the plural expression unless the context clearly indicates otherwise. In this specification, terms such as "comprising" or "having" are intended to specify the existence of the described features, numbers, steps, actions, components, parts, or combinations thereof, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0038] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this specification.

[0040] One embodiment of the present invention is a method for manufacturing a marine-derived biomass film using a film manufacturing apparatus comprising a film forming unit, a thickness control unit connected to the film forming unit, and a drying unit connected to the thickness control unit.

[0041] (S1) A step of applying a first curing agent to a first transfer felt that enters the film forming part;

[0042] (S2) A step of forming a first film by applying a composition for forming a marine-derived biomass film onto a first transfer felt coated with the first curing agent; and

[0043] (S3) A second curing agent identical or different from the first curing agent is applied to the first film to form a second film, and

[0044] The above film forming unit provides a method for manufacturing a marine-derived biomass film comprising a composition for forming a marine-derived biomass film within itself.

[0045] According to one embodiment of the present invention, a manufacturing method can be provided in which the production cost of a 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. In addition, according to one embodiment of the present invention, the thickness of the marine-derived biomass film can be uniformly controlled.

[0047] Hereinafter, the configuration of the present invention will be described in more detail with reference to the drawings.

[0049] FIG. 1 is a cross-sectional view of a film manufacturing apparatus for implementing a method for manufacturing a marine-derived biomass film according to one embodiment of the present invention.

[0050] Figure 2 is an enlarged cross-sectional view of the film forming portion of Figure 1.

[0051] Referring to FIGS. 1 and 2, a film manufacturing apparatus (100) for implementing a method for manufacturing a marine-derived biomass film according to the present invention may include a film forming unit (FH), a thickness control unit (20) connected to the film forming unit (FH), and a drying unit (DR) connected to the thickness control unit. In this specification, the meaning of "connected" is defined to encompass not only the meaning of one member being directly connected to another member, but also the meaning of being indirectly connected.

[0052] The film forming part (FH) according to the present invention may be a member in which a film is formed by curing a marine-derived biomass film-forming composition, which is a liquid sample in the form of a slurry.

[0053] A film manufacturing apparatus (100) according to the present invention may include a first transfer felt supply unit (SF1) that supplies a first transfer felt (F1) to the film forming unit (FH) and a second transfer felt supply unit (SF2) that supplies a second transfer felt (F2) to the film forming unit (FH). The first transfer felt (F1) and the second transfer felt (F2) may be composed of, for example, a polyester resin, a polyamide resin, a fluorine resin, or a polycarbonate resin. The polyester resin may be, for example, polyethylene terephthalate (PET), and the fluorine resin may be, for example, polytetrafluoroethylene (PTFE).

[0054] A method for manufacturing a marine-derived biomass film according to the present invention comprises: (S1) a step of applying a first curing agent to a first transfer felt (F1) that enters the film forming part (FH). Specifically, by applying the first curing agent onto the surface of the first transfer felt, a composition for forming a marine-derived biomass film in the form of a slurry can be well adhered to the first transfer felt, and as a result, a reaction for forming a non-freezing layer of the film can proceed, thereby forming the first film well. The first curing agent may be a solution containing one or more components selected from the group consisting of sucrose, lactose, maltose, MgCl2, CaCl2, sodium dodecyl sulfate, amine-based compounds, and ethoxylate-based compounds.

[0055] The method for manufacturing a marine-derived biomass film according to the present invention comprises the step of (S2) forming a first film by applying a composition for forming a marine-derived biomass film onto a first transfer felt (F1) coated with the first curing agent. The composition for forming a marine-derived biomass film can adhere well to the first transfer felt (F1) due to the first curing agent applied to the surface of the first transfer felt.

[0056] A method for manufacturing a marine-derived biomass film according to the present invention comprises the step of (S3) forming a second film by applying a second curing agent, which is identical or different from the first curing agent, onto the first film. The method of applying the first and second curing agents may be a spray method, and a spray device for implementing the spray method may be appropriately positioned according to the purpose 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.

[0057] The film forming unit (FH) according to the present invention includes the marine-derived biomass film forming composition (L) within it. In the past, due to the characteristics of alginates that easily absorb a large amount of water to form a high-viscosity solution, there was a problem in that it was difficult to continuously produce a thin film in a polymer film production process or a papermaking process using a marine-derived biomass film forming composition in the form of a slurry.

[0058] According to one embodiment of the present invention, a manufacturing method can be provided in which the production cost of a 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. In addition, according to one embodiment of the present invention, the thickness of the marine-derived biomass film can be uniformly controlled.

[0059] The film forming section (FH) according to the present invention may include a non-freezing layer forming section (CP) in which a composition for forming a marine-derived biomass film is cured. Specifically, the non-freezing layer forming section (CP) may include a composition for forming a marine-derived biomass film in the form of a slurry and first and second liquid curing agents applied by a spray method.

[0060] Specifically, the composition for forming a marine-derived biomass film may include a 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 may be brown algae. The brown algae may be, for example, wakame, kelp, etc.

[0061] 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 an alginate, and more specifically, the alginate may be sodium alginate or potassium alginate.

[0062] 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 below the above numerical range, a problem may arise in which the strength of the marine-derived biomass film is reduced, and if it exceeds the above numerical range, the viscosity of the composition for forming the marine-derived biomass film may become excessively high.

[0063] The content of the alginate according to the present invention may be 27 to 43 weight% based on the total weight of the composition for forming a marine-derived biomass film, preferably 35 to 43 weight%, and more preferably 40 to 42 weight%. When the content of the alginate is within the above numerical range, the biodegradability and physical properties of the marine-derived biomass film can be optimized.

[0064] The composition for forming a marine-derived biomass film according to the present invention may include a plasticizer that lowers the viscosity of the composition and reduces deformation of the film caused by external force. The plasticizer may include an alcohol compound. The alcohol compound may be, for example, any one selected from the group consisting of glycerin, xylitol, mannitol, sorbitol, and combinations thereof.

[0065] The above 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 preferably be 60 to 100 parts by weight, more preferably 60 to 80 parts by weight, based on 100 parts by weight of the alginate. High stiffness and tensile strength of the marine-derived biomass film can be achieved only if the content of the plasticizer satisfies the above numerical range.

[0066] A 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 intended to control the stiffness 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. The content of the oil-based additive must satisfy the above numerical range to achieve high stiffness of the marine-derived biomass film.

[0067] 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 a filler based on 100 parts by weight of the alginate. The filler may be added to increase the strength and stiffness 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. When two types of fillers are used in this way, the strength and stiffness of the film can be further increased. According to one 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) may be 1:1 to 1:9, preferably 1:2 to 1:7, and more preferably 1:2 to 1:3. When the weight ratio of the above polysaccharide-based additive and the above protein-based additive is within the above numerical range, high stiffness, tensile strength, and elongation at break of the marine-derived biomass film can be achieved.

[0068] 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.

[0069] The above 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 above polysaccharide-based additive may be, for example, 15 to 75 kDa. The above polysaccharide-based additive may be a starch containing a large amount of starch. The above starch may be, for example, conventional corn starch, potato starch, cassava starch, etc.

[0070] The content of the above filler may preferably be 2 to 10 parts by weight, more preferably 2 to 5 parts by weight, based on 100 parts by weight of the above alginate. The content of the above filler must satisfy the above numerical range so that the strength and stiffness of the marine-derived biomass film can be improved.

[0071] A 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 impart moisture barrier properties. The content of the moisture barrier additive may be appropriately controlled. The moisture barrier additive may be, for example, mica with a particle size of 1 to 10 μm (micrometers).

[0072] As illustrated in FIG. 2, the film forming unit (FH) according to the present invention may include a first control unit (12) for controlling the thickness of the first film, a second control unit for controlling the width of the first film and preventing external leakage of the marine-derived biomass film forming composition (L), and a dam (14) facing the first control unit (12). The first control unit (12) may be, for example, a doctor blade, and the second control unit may be, for example, a side guard. The width and thickness of the film can be precisely controlled by the first control unit and the second control unit. The dam (14) is a structure having a volume capable of storing a certain amount of sample, and serves as a structure that assists in injection while maintaining a quantitative input of a certain volume of sample to stably form the film.

[0073] The method for manufacturing a marine-derived biomass film according to the present invention may further include (S4) a step of adjusting the thickness of the second film in the thickness adjustment unit (20). Specifically, the thickness adjustment 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 with the adjusted thickness may be 0.01 to 1.00 cm. Pressure may be applied to both surfaces of a laminate passing between two rolls using the calendering roll. The laminate may be composed of a first transfer felt and 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.

[0074] 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 movement speeds of the first and second transfer felts may each independently be 10 cm / min to 1,000 cm / min, 10 cm / min to 500 cm / min, specifically 10 cm / min to 200 cm / min, and more specifically 50 cm / min to 150 cm / min. For example, it may be desirable for the movement speeds of the first and second transfer felts to be the same for the process.

[0075] 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, by including pores of the size range in the first and second transfer felts, the solvent contained in the film can be effectively vaporized.

[0076] The method for manufacturing a marine-derived biomass film according to the present invention may further include the step (S5) of drying the second film with controlled thickness in the drying unit (DR). Specifically, the step (S5) may be 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, and preferably a step of using a combination thereof.

[0077] By using infrared drying and hot air drying methods simultaneously, residual solvent in the second film can be effectively removed, and consequently, the thickness of the marine-derived biomass film can be precisely controlled.

[0078] The drying unit (DR) according to the present invention may include a tunnel (TN) through which the second film passes. The tunnel (TN) may, for example, be a profile defining a space through which the laminate passes. The internal temperature of the tunnel (TN) may be controlled, for example, to 60 to 200°C. If necessary, the drying unit (DR) may additionally include piping to help reflux hot air.

[0079] The above laminate can pass through a tunnel (TN) due to a roll (R).

[0080] The drying unit (DN) according to the present invention may be arranged at regular intervals on the upper and lower surfaces of the inner circumference of the tunnel (TN). Specifically, the drying unit (DN) can be arranged on the inner circumference of the tunnel (TN) to effectively dry the second film.

[0081] The method for manufacturing a marine-derived biomass film according to the present invention may further include the step (S6) 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 a roll on which the dried second film is wound. The profile controller may facilitate rewinding.

[0082] As illustrated 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), the second transfer felt (F2) can be wound in a roll form on the second air shaft (AS2), and the second film can be wound in a roll form on the third air shaft (AS3). For example, the first to third air shafts (AS1, AS2, AS3) may be cylindrical, and thus the transfer felt and film can be easily wound in a roll form.

[0084] FIG. 3 is a flowchart illustrating a method for manufacturing a marine-derived biomass film according to another embodiment of the present invention.

[0085] Referring to FIG. 3, a method for manufacturing a marine-derived biomass film according to one embodiment of the present invention may include: (a) a step of applying a first curing agent to a first transfer felt that enters a film forming section by a spray method; (b) a step of forming a first film by applying a composition for forming a marine-derived biomass film onto the first transfer felt coated with the first curing agent; (c) a step of forming a second film by applying a second curing agent onto the first film by a spray method; (d) a step of adjusting the thickness of the second film by a calendering roll; (e) a step of drying the second film with adjusted thickness by passing it through an infrared and hot air tunnel; and (f) a step of rewinding the dried second film.

[0087] According to another embodiment of the present invention, the present invention is a method for manufacturing an eco-friendly film using a film manufacturing apparatus comprising a film forming unit (FH), a thickness control unit (20) connected to the film forming unit (FH), and a drying unit (DR) connected to the thickness control unit (20).

[0088] (Sa) A step of forming a third film by applying a composition for forming a marine-derived biomass film onto a first circulating felt; and

[0089] (Sb) The method includes the step of immersing the third film in the first curing agent to form a fourth film, and

[0090] The above film forming unit may provide a method for manufacturing a marine-derived biomass film comprising a composition for forming a marine-derived biomass film within itself.

[0091] Here, the first circulating felt can circulate in the form of an endless track.

[0092] The step of forming the fourth film above can be performed in a reservoir-type dam (14) containing the first curing agent.

[0093] The description of other methods for manufacturing eco-friendly films is as described above.

[0094] Although 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 by those skilled in the art using the basic concept of the present invention as defined in the following claims are also included within the scope of the present invention. Explanation of the symbols

[0096] 100: Film manufacturing device FH: Film forming unit SF1: 1st transfer felt supply unit SF2: 2nd transfer felt supply unit F1: 1st transfer felt F2: 2nd transfer felt CP: Floating layer forming section 20: Thickness control section DR: Drying section DN: Drying unit 12: 1st Control Section 14: Dam L: Composition for forming marine-derived biomass films TN: Tunnel RW: Rewinding section AS1: 1st air shaft AS2: 2nd air shaft AS3: 3rd air shaft

Claims

Claim 1 A method for manufacturing a marine-derived biomass film using a film manufacturing apparatus comprising a film forming unit, a thickness control unit connected to the film forming unit, and a drying unit connected to the thickness control unit, comprising: (S1) a step of applying a first curing agent to a first transfer felt that enters the film forming unit; (S2) a step of forming a first film by applying a composition for forming a marine-derived biomass film onto the first transfer felt on which the first curing agent has been applied; A method for manufacturing a marine-derived biomass film, comprising: (S3) a step of forming a second film by applying a second curing agent identical or different from the first curing agent onto the first film; (S4) a step of adjusting the thickness of the second film in the thickness adjustment unit; (S5) a step of drying the second film with the adjusted thickness in the drying unit; wherein step (S5) simultaneously uses an infrared drying method and a hot air drying method, the film forming unit contains the composition for forming a marine-derived biomass film within it, the first and second transfer felts each independently contain pores of 150 to 250 mesh, and the moving speed of the first and second transfer felts each independently 10 cm / min to 1,000 cm / min. Claim 2 A method for manufacturing a marine-derived biomass film according to claim 1, wherein the film forming unit comprises: a first adjusting unit for adjusting the thickness of the first film; a second adjusting unit for adjusting the width of the first film; and a dam facing the first adjusting unit. Claim 3 A method for manufacturing a marine-derived biomass film, wherein, in claim 1, the method of applying the first and second curing agents is a spray method. Claim 4 A method for manufacturing a biomass film derived from marine sheep according to claim 1, further comprising: (S4) a step of adjusting the thickness of the second film in the thickness adjustment unit; wherein the thickness adjustment unit comprises a calendering roll that applies pressure to the surface of the second film, and the thickness of the second film with adjusted thickness is 0.01 to 1.00 cm. Claim 5 A method for manufacturing a marine-derived biomass film, wherein, in paragraph 4, the second film is interposed between the first transfer felt and a second transfer felt different from the first transfer felt. Claim 6 delete Claim 7 delete Claim 8 delete Claim 9 A method for manufacturing a marine-derived biomass film according to claim 1, wherein the drying unit comprises a tunnel through which the second film passes inside. Claim 10 A method for manufacturing a marine-derived biomass film according to claim 1, further comprising: (S6) a step of rewinding the dried second film in a rewinding unit connected to the drying unit; wherein the rewinding unit comprises a profile controller attached to the front end of a roll on which the dried second film is wound.

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