Container comprising a film containing collagen and method for manufacturing the same

Abstract

A container is disclosed. The container of the present disclosure comprises: a main body portion having a receiving groove for holding food; and a collagen film formed to cover at least one surface of the main body portion; wherein the collagen film may further comprise a crosslinking agent.

Description

Technology Field

[0001] The present invention relates to a container comprising a collagen-containing film and a method for manufacturing the same, and more specifically, to a container comprising a collagen film that is easily separated and decomposes into inorganic matter for multiple uses of containers such as food trays outdoors, and a method for manufacturing the same. Background Technology

[0002] A meal tray is a piece of tableware featuring concave grooves designed to hold rice, soup, and three or four side dishes, or to support a bowl. Stainless steel or plastic trays are widely used due to reasons such as durability and hygiene. Meal trays are primarily used in large-scale catering facilities such as schools, cafeterias, hospitals, and the military, but they are also utilized in small and medium-sized restaurants and event venues.

[0003] After each use, reusable food trays are separated to remove leftovers, collected, washed, and reused.

[0004] Recently, due to changes in global environmental regulations, interest in the use of eco-friendly materials is rapidly increasing, and along with this, policies regulating the use of disposable items are on the rise. The problem to be solved

[0005] Although leftovers are separated after use, washing is essential for reuse due to residual food. In large-scale facilities, the high volume of trays used consumes significant time, manpower, and costs for collection and washing, and washing is often difficult, particularly when trays are used outdoors.

[0006] In cases where washing is difficult every time, a large number of trays are prepared, or disposable plastic covers are used to temporarily cover the trays. However, preparing a large number of trays consumes significant costs and manpower for transportation, and using disposable plastic covers not only causes environmental pollution but can also be harmful to users' health as hot food comes into contact with the plastic.

[0007] Meanwhile, when washing food trays, foreign substances such as food residue tend to get stuck in the edges of the tray, and there is a problem that it is difficult to wash and dry these parts. Therefore, the edges of these trays can cause various hygiene problems. means of solving the problem

[0008] According to one embodiment, the container comprises: a main body portion having a receiving groove for holding food; and a collagen film formed to cover at least one surface of the main body portion; and the collagen film may further comprise a crosslinking agent.

[0009] According to one embodiment, the collagen film may be disposed on the surface of the main body in a state formed based on the shape of the main body.

[0010] According to one embodiment, the collagen film may be adsorbed onto the surface of the main body through vacuum adsorption or heat treatment after being placed on the surface of the main body.

[0011] According to one embodiment, the collagen film may include an adhesive material applied to a surface facing the surface of the main body, and may be attached to the edge region of the main body and not attached to a region other than the edge region of the main body, and may be attached to the surface of the receiving groove by means of food placed on a region corresponding to the receiving groove of the collagen film and spaced apart from the surface of the receiving groove, and the region may be stretched by an external force.

[0012] According to one embodiment, the collagen film may be attached to the surface of the main body in a superimposed state.

[0013] According to one embodiment, the collagen film is attached to wrap the upper, side, and lower surfaces of the edge of the main body, and the edge of the main body is in a rounded shape to form an inner space and may further include a filler disposed in the inner space. Effects of the invention

[0014] By using a collagen film on the food tray in this way, the tray can be reused without washing, and convenient, eco-friendly disposal of food waste can be expected.

[0015] In addition, wrapping the edges of the food tray with a collagen film can maintain hygiene by preventing foreign substances from entering the edges. Brief explanation of the drawing

[0016] FIGS. 1a to 1c are drawings for illustrating a collagen film disposed on a food plate according to one embodiment of the present disclosure. FIG. 2 is a flowchart illustrating a method for manufacturing and using a food plate using a collagen film according to one embodiment of the present disclosure. FIG. 3 is a drawing for illustrating a food plate with a collagen film adsorbed thereon according to one embodiment of the present disclosure. FIG. 4 is a drawing for explaining the operation of separating a collagen film from a food tray after use, according to one embodiment of the present disclosure. FIG. 5 is a drawing for explaining a food plate with a collagen film attached, according to one embodiment of the present disclosure. FIG. 6 is a drawing for explaining a food plate with a collagen film attached, according to one embodiment of the present disclosure. FIG. 7 is a drawing for explaining the operation of attaching a collagen film on a food plate according to one embodiment of the present disclosure. FIG. 8 is a drawing for explaining a food plate with multiple collagen films attached, according to one embodiment of the present disclosure. FIG. 9 is a drawing for explaining a food plate with multiple collagen films attached, according to one embodiment of the present disclosure. FIG. 10 is a drawing for illustrating a food tray having a collagen film attached to wrap around the edge of the food tray according to one embodiment of the present disclosure. Specific details for implementing the invention

[0017] Specific structural or functional descriptions of embodiments according to the concept of the present invention disclosed herein are provided merely for the purpose of explaining embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention may be implemented in various forms and are not limited to the embodiments described herein.

[0018] Embodiments according to the concept of the present invention may be subject to various modifications and may take various forms; therefore, embodiments are illustrated in the drawings and described in detail in this specification. However, this is not intended to limit the embodiments according to the concept of the present invention to specific disclosed forms, and includes modifications, equivalents, or substitutions that fall within the spirit and scope of the present invention.

[0019] Terms such as "first" or "second" may be used to describe various components, but said components should not be limited by said terms. For the sole purpose of distinguishing one component from another, for example, without departing from the scope of rights according to the concept of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component.

[0020] When it is stated that one component is “connected” or “connected” to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. Conversely, when it is stated that one component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between. Expressions describing the relationships between components, such as “between,” “right between,” or “directly adjacent to,” should be interpreted in the same way.

[0021] The terms used herein are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions 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.

[0022] 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 to which the present invention pertains. 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.

[0023] Hereinafter, embodiments will be described in detail with reference to the attached drawings. However, the scope of the patent application is not limited or restricted by these embodiments. Identical reference numerals in each drawing indicate identical components.

[0025] FIGS. 1a to 1c are drawings for illustrating a collagen film disposed on a food plate according to one embodiment of the present disclosure.

[0026] Referring to FIG. 1a, according to one embodiment, the container may include a main body (110) having a receiving groove for holding food and a collagen film (100) in contact with at least a portion of the surface of the main body (110). According to one embodiment, the collagen film (100) may be manufactured, distributed, and / or sold as a separate product from the main body (110).

[0027] According to one embodiment, the main body (110) may be a metal container. For example, the main body (110) may include at least one of stainless steel, aluminum, magnesium, zinc, or titanium.

[0028] According to one embodiment, the main body (110) may be a plastic container. For example, the main body (110) may include at least one of polyethylene, polypropylene, polystyrene, polyester, PVC, and PET.

[0029] According to one embodiment, the main body (110) can be applied to any tableware structure, such as a plate, a food container, a cooking bowl, or a sealed container, in addition to a food tray.

[0030] According to one embodiment, the collagen film (100) may be, for example, 100% collagen.

[0031] According to one embodiment, the collagen film (100) may include biodegradable plastic.

[0032] According to one embodiment, the biodegradable plastic may be formed from a biodegradable polymer made from natural polymers. For example, the biodegradable polymer may include those derived from plants, such as cellulose, hemicellulose, pectin, lignin, and starch, which is a storage carbohydrate, and those derived from animals based on chitin, such as the shells of shrimp and crabs.

[0033] According to one embodiment, the biodegradable plastic is a material having the same function as plastic by utilizing a biopolymer produced by microorganisms. The biopolymers included therein may include polyhydroxyalkanoates (PHA) composed of aliphatic esters. Examples of PHA may include poly(hydroxybutyrate) (P3HB), which is a polymer of 3-hydroxybutyrate; poly(hydroxyvalerate) (PHV), which is a polymer of 3-hydroxyvalerate; and PHBV (poly(3-hydroxybutyrate-co-3-hydroxyvalerate)), which is a copolymer of 3-hydroxybutyrate and 3-hydroxyvalerate.

[0034] According to one embodiment, the biodegradable plastic may include a chemically synthesized polymer. A chemically synthesized polymer refers to a polymer made from raw materials such as amino acids, sugars, and polyesters produced at a low cost by fermentation technology, and is a polymer material that is degraded by microorganisms. For example, the chemically synthesized polymer may include polycaprolactone (PCL), polyglycolic acid (PGA), polylactic acid (PLA), polyorthoester, phosphagene, and polypeptide.

[0035] According to one embodiment, the collagen film (100) may be implemented in a shape corresponding to each region ((a) to (f)) of the main body (110). For example, the collagen film (100) may be implemented in each region so as to correspond to the concave shape of each region. By implementing the collagen film (100) in a shape corresponding to each region of the main body (110), the bonding degree of the collagen film (100) to the main body (110) is improved, thereby providing higher durability, and by increasing the bonding degree, the size of the internal receiving region can be maximized, thereby improving the food receiving capacity.

[0036] According to additional embodiments, the collagen film (100) may provide means to improve durability and cleanliness by applying different coatings to different regions. For example, the collagen film (100) may be implemented to distinguish and mark regions corresponding to foods containing a large amount of oil, such as fried or stir-fried foods (e.g., marking the border of region (e) in yellow), and to additionally apply a hydrophobic coating or a fluorine-based / silicone-based coating to the corresponding regions. According to additional examples, regions where sharp foods are placed may be distinguished and marked (e.g., marking the border of region (c) in red), and to additionally apply a polymer reinforcement coating (e.g., PVA + nanocellulose, etc.) to the corresponding regions. It will be understood by a person skilled in the art that examples of polymer reinforcement coatings are not limited to the examples presented, and can be implemented with any coating that can increase strength compared to other regions. As with the examples presented, through the reinforcement coating, situations where fish bones or shellfish are placed, causing the collagen film (100) to break and the container to be contaminated with food can be improved.

[0037] According to an additional embodiment, the collagen film (100) may be implemented to have a thickness greater than a certain amount at the edge of an area (e.g., area (b)) where a specific temperature must be maintained, or the entire area may be coated with a material having relatively low thermal conductivity (e.g., polyimide, polytetrafluoroethylene). In this way, in the example presented, even if food (e.g., fruit salad) that must be kept at a low temperature is placed in area (b), the phenomenon of the temperature rising due to food placed in other areas can be reduced.

[0038] According to an additional embodiment, the collagen film (100) may be coated with a material that changes color according to temperature so that the temperature can be predicted. For example, the collagen film (100) may provide a means for a user to predict the temperature of the food placed by coating the (f) region with a material that changes color according to temperature (e.g., an organic microcapsule-based thermochromic material (microencapsulated leuco dye + developer + solvent, etc.). This allows the user to predict the temperature of the food placed, even if they cannot eat hot food according to their preference, thereby providing a means to prepare for situations such as injury caused by failing to predict a high temperature.

[0039] FIG. 1b is a drawing for explaining in more detail a food plate reflecting a collagen film according to one embodiment of the present disclosure.

[0040] According to FIG. 1b, one side of the collagen film (100) may include an opening that is open in one direction to allow a container to be inserted, and the opening may include an adhesive portion (1100) only in a portion of the inner rim, and by closing the opening after covering the food tray through the adhesive portion (1100), it is possible to prevent the collagen film (100) from being pushed or slipped out during a meal, thereby preventing food from coming off the collagen film (100) and sticking to the food tray. According to an additional embodiment,

[0041] According to another embodiment, the adhesive portion (1100) may be additionally formed in a portion of the outer edge of the opening of the collagen film (100) so that it can be rolled up and adhered to wrap around the bottom surface or the inside of the food tray.

[0042] According to one embodiment, the adhesive portion (1100) is made of an eco-friendly material, such as a biodegradable polymer or a naturally derived component, so that the environmental burden can be minimized when the film is disposed of. For example, the adhesive portion (1100) may include a natural adhesive such as corn starch, potato starch, a cellulose derivative, or a polysaccharide extracted from seaweed. The position or number of the adhesive portions (1100) shown in FIG. 1b can be easily changed by a person skilled in the art, and it is sufficient if the collagen films (100) on both sides come into contact and adhere.

[0043] Since the collagen film (100) including the adhesive portion (1100) is not integrated with the food tray (110), it can be distributed and managed separately, and the collagen film can be easily applied to containers of different sizes, shapes, or the number of receiving grooves.

[0044] According to another embodiment, the collagen film (100) may be characterized by being made to have stronger elasticity so as to be tightened toward the opening.

[0045] According to another embodiment, the opening of the collagen film (100) may further include a rubber band (not shown) having biodegradable properties or a tightening cord (not shown) having biodegradable properties.

[0046] FIG. 1c is a drawing for illustrating a collagen film disposed on a food plate according to another embodiment of the present disclosure.

[0047] According to one embodiment, the collagen film (100) may include a curve with a shape corresponding to the receiving groove of the main body (110).

[0048] According to one embodiment, the collagen film (100) may be disposed on the surface of the main body (110) in a state formed based on the shape of the main body (110). That is, the collagen film (100) may be a structure having a curve in a shape corresponding to the receiving groove of the main body (110).

[0049] According to one embodiment, the collagen film (100) may be placed on the surface of the main body (110) and then adsorbed onto the surface of the main body (110) through vacuum adsorption or heat treatment. That is, the collagen film (100) may have a curved shape corresponding to the receiving groove by being attached to the surface of the main body (110) in a thin sheet state.

[0050] According to one embodiment, the collagen film (100) may have elasticity. For example, the collagen film (100) may be stretched to cover the front of the main body (110) based on an external force, such as a user pulling the collagen film (100), even if the collagen film (100) has an area smaller than that of the main body (110).

[0051] According to another embodiment, the collagen film (100) may include a crosslinking agent in the film manufacturing process. That is, when manufacturing the collagen film (100), an enzymatic crosslinking agent such as transglutaminase or a chemical crosslinking agent such as monocalcium phosphate, glutaraldehyde, or an epoxy compound may be added to the collagen solution, or the collagen film (100) may be immersed in the crosslinking agent for a predetermined time to strengthen the bonds between collagen molecules, thereby increasing the thermal stability of the collagen, raising the glass transition temperature and thermal decomposition temperature of the film, and increasing the crosslinking density, which may reduce the water absorption rate and swelling degree of the collagen film (100) and provide the effect of improving water resistance.

[0052] According to another embodiment, the collagen film (100) can be manufactured by undergoing physical crosslinking treatments such as UV irradiation and heat treatment, thereby further improving the durability and moisture resistance of the film. The UV irradiation can induce covalent bonds within the collagen molecules, and the heat treatment can induce amide bonds within the molecules by exposing the collagen to a high temperature of about 105°C to 140°C in a vacuum. Thus, a collagen film (100) with reduced toxicity compared to chemical crosslinking agents can be provided.

[0053] According to another embodiment, the thermal durability of the collagen film (100) can be improved by blending a biodegradable polymer with excellent heat resistance or by forming a multilayer structure. For example, the biodegradable polymer with excellent heat resistance may be a polymer material that has improved heat resistance and biodegradable properties, such as polylactic acid (PLA), polyhydroxyalkanoate (PHA), polybutylene succinate (PBS), and polycaprolactone (PCL).

[0054] According to another embodiment, a natural polyphenol may be added to the collagen film (100). By adding a natural polyphenol component to the collagen film (100), the spoilage of food can be delayed, thereby providing the effect of delaying the speed of food spoilage even outdoors. Here, the natural polyphenol may be a natural polyphenol extracted from grape seeds, green tea, black tea, cacao, blueberries, grape skins, cranberries, purple sweet potatoes, black beans, onions, apples, berries, citrus fruits, raspberries, peanuts, coffee beans, apples, potatoes, onions, and soybeans.

[0056] FIG. 2 is a flowchart illustrating a method for manufacturing and using a food plate using a collagen film according to one embodiment of the present disclosure.

[0057] Referring to FIG. 2, in operation 210, a film (e.g., collagen film (100) of FIG. 1) may be placed on a main body (e.g., main body (110) of FIG. 1). According to one embodiment, the film may be a structure formed to have a shape corresponding to a receiving groove of the main body based on the shape of the main body, or it may be in the form of a thin sheet.

[0058] According to one embodiment, in operation 220, a film can be adsorbed or attached to the surface of the main body.

[0059] According to one embodiment, if the film is a structure formed based on the shape of the main body, the film may be placed on the surface of the main body such that the receiving groove of the main body and the curvature of the film overlap. According to one embodiment, if the film is a structure formed based on the shape of the main body, a portion of the surface of the main body may come into contact with the film, but the film and the surface of the main body may not be attached. According to one embodiment, if a contact material is applied to the rear surface of the film facing the main body, the film may be attached to at least a portion of the surface of the main body.

[0060] According to one embodiment, when the film is in the form of a thin sheet, the film may be placed on the surface of the main body and then adsorbed to the surface of the main body through vacuum adsorption or heat treatment. By adsorbing the film to the surface of the main body through vacuum adsorption or heat treatment in this way, the film may have a curvature corresponding to the receiving groove of the main body.

[0061] According to one embodiment, an adhesive material may be applied to at least a portion of the surface facing the main body of the film. According to one embodiment, the surface opposite to the surface where the adhesive material is applied may come into contact with food.

[0062] According to one embodiment, the adhesive material may include gum. For example, the gum may include locust bean gum, guar gum, xanthan gum, gum arabic, etc. According to one embodiment, the adhesive material can be easily separated from the surface with a small external force (e.g., force of peeling by hand) after being attached to the surface of an object.

[0063] According to one embodiment, when a thin sheet-shaped film is disposed on the surface of the main body, it may be attached to the edge region of the surface of the main body by the adhesive material of the film, but may not be attached to the remaining surface of the main body. For example, the receiving groove of the main body and the film may be spaced apart.

[0064] According to one embodiment, when an external force is applied to an area of ​​the receiving groove corresponding to the main body, the film spaced apart from the receiving groove may stretch and adhere to the surface of the receiving groove. For example, when food is placed on an area of ​​the film corresponding to the receiving groove, or when a user presses the film with their hand to make it adhere to the receiving groove, at least a portion of the film spaced apart from the receiving groove may stretch and adhere to the surface of the receiving groove.

[0065] According to one embodiment, an embodiment in which a film is disposed on a main body part will be described below with reference to FIGS. 3, 5, and 6.

[0066] According to one embodiment, the film may have elasticity. For example, the film may be stretched by an external force pulling the film. According to one embodiment, a film smaller than the front surface area of ​​the main body may be fixed to one of the edges of the main body, and the unfixed area of ​​the film may be pulled to attach it to another edge of the main body. The operation of attaching to the main body using the elasticity of the film in this manner will be explained below with reference to FIG. 7.

[0067] According to one embodiment, a plurality of films may be superimposed. For example, a plurality of films may be placed on the surface of the main body in a superimposed state, or after one film is placed on the surface of the main body, another film may be placed on the placed film. According to one embodiment, an embodiment in which a plurality of films are superimposed and placed on the main body will be described below with reference to FIGS. 8 and 9.

[0068] According to one embodiment, a film may be attached to wrap around the edge of the main body. For example, the film may be attached to wrap around the upper, side, and lower surfaces of the edge of the main body. According to one embodiment, the edge of the main body may be in a rounded shape to form an inner space. According to one embodiment, a filler may be placed in the inner space. According to one embodiment, an embodiment in which the film is attached to wrap around the edge will be described below with reference to FIG. 10.

[0069] According to one embodiment, in operation 230, food can be placed on the surface of the film and used. For example, food can be served and consumed while the film is placed on the main body.

[0070] According to one embodiment, in operation 240, the film can be separated from the main body and discharged. According to one embodiment, if food residue remains on the film, the user can separate the film from both edges of the main body to wrap around the food residue. According to one embodiment, the separated film can be discharged with the food residue wrapped around it. Since the film is biodegradable, the film and the food residue can be processed together without separation. In this way, by removing the film and the food residue together, the main body can be reused without cleaning the surface of the main body. An embodiment of separating and discharging the film from the main body in this manner will be explained below with reference to FIG. 4.

[0071] FIG. 3 is a drawing for explaining an example of a food plate with a collagen film adsorbed thereon according to one embodiment of the present disclosure.

[0072] Referring to FIG. 3, a film (100) (e.g., the collagen film (100) of FIG. 1) may be placed on a main body part (110) (e.g., the main body part (110) of FIG. 1). According to one embodiment, the film (100) may include a curve with a shape corresponding to a receiving groove of the main body part (110).

[0073] According to one embodiment, the film (100) may be formed to have a curve corresponding to the receiving groove of the main body (110) based on the shape of the main body (110), and then placed on the surface of the main body (110) such that the receiving groove of the main body (110) and the curve of the film (100) overlap. According to one embodiment, when the film (100) is a structure formed based on the shape of the main body (110), the film (100) and a portion of the surface of the main body (110) may come into contact, but the film (100) and the surface of the main body (110) may not be attached. According to one embodiment, when a contact material is applied to the rear surface of the film (100) facing the main body (110), the film (100) may be attached to at least a portion of the surface of the main body (110). According to one embodiment, the film (100) can wrap around the edge of the main body (110).

[0074] According to one embodiment, the film (100) may be placed on the main body (110) in a thin sheet state and then adsorbed to the surface of the main body (110) through vacuum adsorption or heat treatment. In this way, by adsorbing the film to the surface of the main body through vacuum adsorption or heat treatment, the film may have a curvature corresponding to the receiving groove of the main body.

[0075] FIG. 4 is a drawing for explaining the operation of separating a collagen film from a food tray after use, according to one embodiment of the present disclosure.

[0076] Referring to FIG. 4, with the film (100) placed on the main body (110) as shown in FIG. 3, food is placed on the film (100) and after the film (100) is used, the film (100) can be separated from the main body (110) and discharged. According to one embodiment, the film (100) can be separated from the main body (110) from both edges so as to wrap the leftover food (410) on the film (100). According to one embodiment, the film (100) can be completely separated from the main body (110) and discharged with the collagen film (100) wrapped around the leftover food (410). As the film (100) is biodegradable, the film (100) and the leftover food (410) can be processed together without separation. In this way, by removing the film (100) and the residue (410) together, the main body (110) can be reused without washing the surface of the main body (110).

[0077] FIG. 5 is a drawing for explaining a food plate with a collagen film attached, according to one embodiment of the present disclosure.

[0078] Referring to FIG. 5, a thin sheet-shaped film (100) (e.g., the collagen film (100) of FIG. 1) can be placed on a main body (110) (e.g., the main body (110) of FIG. 1).

[0079] According to one embodiment, an adhesive material may be applied to the side of the film (100) facing the main body (110). According to one embodiment, the adhesive material may have an adhesive strength that allows it to be separated even by a weak external force after adhesion.

[0080] According to one embodiment, the film (100) may be attached to a portion of the main body (110). For example, the film (100) may be attached to the edge of the main body (110). According to one embodiment, the film (100) may be attached to or not attached to the area between the receiving grooves of the main body (110). According to one embodiment, the film (100) may be spaced apart from the surface of the receiving groove of the main body (110).

[0081] According to one embodiment, the unattached area of ​​the collagen film (100) can be attached to the surface of the receiving groove by an external force applied from the outside of the collagen film (100), as shown in FIG. 6.

[0082] FIG. 6 is a drawing for explaining a food plate with a collagen film attached, according to one embodiment of the present disclosure.

[0083] Referring to FIG. 6, an adhesive material may be applied to the non-attached area (or the area spaced apart from the receiving groove of the main body) of the film (100) (e.g., the collagen film (100) of FIG. 1). According to one embodiment, when an external force is applied to the non-attached area of ​​the film (100), the film (100) may stretch and be attached to the surface of the receiving groove of the main body (110) (e.g., the main body (110) of FIG. 1). For example, when food (100) is placed in the area of ​​the film (100) spaced apart from the main body (110), or when a user presses the film (100) with their hand (620) so that the film (100) is attached to the receiving groove, at least a portion of the area of ​​the film (100) spaced apart from the receiving groove may stretch and be attached to the surface of the receiving groove. According to one embodiment, the film (100) is attached to a portion of the surface of the receiving groove, but not attached by vacuum suction, and some areas, such as the corners of the receiving groove, may not be attached.

[0084] In this way, after placing the sheet-shaped film (100) on the main body (110), the film (100) can be attached to the main body (110) and used without performing processing using equipment such as vacuum adsorption or heat treatment.

[0085] FIG. 7 is a drawing for explaining the operation of attaching a collagen film on a food plate according to one embodiment of the present disclosure.

[0086] Referring to FIG. 7, the film (100) (e.g., the collagen film (100) of FIG. 1) may be elastic and may be smaller than the size of the main body (110) (e.g., the main body (110) of FIG. 1). According to one embodiment, the film (100) may be stretched to cover the front of the main body (110) based on an external force, such as pulling the film (100) from the outside.

[0087] For example, a film (100) smaller than the front surface area of ​​the main body (110) can be fixed to one area of ​​the edge of the main body (110), and the unfixed area of ​​the film (100) can be pulled to another edge of the main body (110) and attached to the other edge of the main body (110). As a result, the main body (110) can be covered with a film (100) of a small area.

[0088] FIG. 8 is a drawing for explaining a food plate with multiple collagen films attached, according to one embodiment of the present disclosure.

[0089] Referring to FIG. 8, a plurality of films (100, 101, 102) (e.g., the collagen film (100) of FIG. 1) may be superimposed. According to one embodiment, the superimposed plurality of films (100, 101, 102) may be referred to as a multiple film (810). According to one embodiment, the plurality of films (100, 101, 102) may be attached to each other.

[0090] According to one embodiment, when the multi-film (810) is a structure having a curved shape corresponding to the receiving groove of the main body (110), the multi-film (810) may be placed on the surface of the main body (110) such that the receiving groove of the main body (110) and the curve of the multi-film (810) overlap. The multi-film (810) and the surface of the main body (110) may be in contact but not attached, or at least partially attached.

[0091] According to one embodiment, a multi-film (810) formed by overlapping a plurality of films (100, 101, 102) can be attached to the surface of a main body (110) (e.g., the main body (110) of FIG. 1). For example, the multi-film (810) can be attached to the main body (110) through vacuum adsorption or heat treatment.

[0092] According to one embodiment, a plurality of films (100, 101, 102) may be sequentially arranged on the main body (110) to form a multiple film (810). For example, a third film (102) may be attached to the surface of the main body (110), a second film (101) may be attached to the third film (102), and a first film (100) may be attached to the second film (101).

[0093] According to one embodiment, even if a plurality of films (100, 101, 102) are attached to each other, the edges of the plurality of films (100, 101, 102) may be separated. As the edges are separated in this way, the surface film (100) (e.g., the first film (100)) among the plurality of films (100, 101, 102) can be easily separated after use.

[0094] As the multiple film (810) is arranged on the main body (110) in this manner, the main body (110) can be reused multiple times without cleaning.

[0095] FIG. 9 is a drawing for explaining a food plate with multiple collagen films attached, according to one embodiment of the present disclosure.

[0096] Referring to FIG. 9, a plurality of films (100, 101, 102) (e.g., the collagen film (100) of FIG. 1) may be superimposed. According to one embodiment, the superimposed plurality of films (100, 101, 102) may be referred to as a multiple film (910). According to one embodiment, the plurality of films (100, 101, 102) may be attached to each other only in some areas. For example, the plurality of films (100, 101, 102) may be attached to each other only in areas corresponding to the edges of the main body (110), and the remaining areas may not be attached.

[0097] According to one embodiment, the multi-film (910) may be a plurality of sheet-shaped films (100, 101, 102) superimposed. According to one embodiment, the multi-film (910) may be attached to the edge of the main body (110) and may be spaced apart from the receiving groove of the main body (110).

[0098] According to one embodiment, when food is placed on the area of ​​the multi-film (910) spaced apart from the receiving groove of the main body (110) as shown in FIG. 6, or when pressed by hand, the multi-film (910) stretches and may come into partial contact with the surface of the receiving groove. According to one embodiment, the surface of the third film (102) facing the receiving groove may come into contact with the surface of the receiving groove but may not be attached.

[0099] According to one embodiment, a plurality of films (100, 101, 102) may be sequentially arranged on the main body (110) to form a multiple film (910). For example, a third film (102) may be attached to the surface of the edge of the main body (110), a second film (101) may be attached to the third film (102), and a first film (100) may be attached to the second film (101).

[0100] According to one embodiment, even if the regions corresponding to the edges of the main body portion (110) of the plurality of films (100, 101, 102) are attached to each other, the edges of the plurality of films (100, 101, 102) may be separated. As the edges of the plurality of films (100, 101, 102) are separated in this way, the used film (100) can be easily separated after using the surface film (100) (e.g., the first film (100)) among the plurality of films (100, 101, 102).

[0101] As the multiple film (810) is arranged on the main body (110) in this manner, the main body (110) can be reused multiple times without cleaning.

[0102] In addition, by applying the adhesive material only to a portion of the film rather than the entire area, the use of the adhesive material is reduced, and the used film can be separated more easily.

[0103] FIG. 10 is a drawing for illustrating a food tray having a collagen film attached to wrap around the edge of the food tray according to one embodiment of the present disclosure.

[0104] Referring to FIG. 10, a film (100) (e.g., the collagen film (100) of FIG. 1) can wrap around the edge area of ​​a main body part (110) (e.g., the main body part (110) of FIG. 1). For example, the film (100) can be attached to wrap around the upper, side, and lower surfaces of the edge of the main body part (110). According to one embodiment, the edge of the main body part (110) may be in a rounded shape so as to form an inner space.

[0105] According to one embodiment, the edge of the main body (110) is rounded to form an inner space, but a gap connecting to the inner space may be formed between the end of the main body (110) and the rear of the main body. Foreign substances may enter the inner space through this gap, and if water enters the inner space, drying may be difficult.

[0106] According to one embodiment, the film (100) can wrap around the edge of the main body (110) to cover a gap formed at the edge. This prevents foreign matter from entering the inner space of the edge of the main body (110).

[0107] According to one embodiment, the inner space may include a filler (1010). For example, the filler (1010) may be injection-molded plastic or silicone. By using the filler (1010) in the inner space in this way, the ingress of foreign substances can be further reduced.

[0108] Although the embodiments have been described above with reference to limited examples and drawings, those skilled in the art can make various modifications and variations from the description above. For example, suitable results can be achieved even if the described techniques are performed in a different order than described, and / or the components of the described system, structure, device, circuit, etc. are combined or assembled in a form different from described, or replaced or substituted by other components or equivalents.

[0109] Therefore, other implementations, other embodiments, and equivalents to the claims also fall within the scope of the claims set forth below.

Claims

Claim 1 A container comprising: a main body portion having a receiving groove for holding food; and a collagen film formed to cover at least one surface of the main body portion; wherein the collagen film further comprises a crosslinking agent; wherein the collagen film is disposed on the surface of the main body portion while in a state formed based on the shape of the main body portion; wherein the collagen film is adsorbed to the surface of the main body portion through vacuum adsorption or heat treatment after being disposed on the surface of the main body portion; wherein the collagen film is attached to wrap around the upper surface, side surface, and lower surface of the edge of the main body portion; wherein the edge of the main body portion is in a rounded shape to form an inner space; wherein the collagen film wraps around the edge of the main body portion to cover a gap formed in the edge; and wherein the inner space comprises a filler. Claim 2 delete Claim 3 delete

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