Heating paper food container

Abstract

The present invention relates to a paper food container for heating, wherein the side surface (20) is formed by being folded upward from the bottom surface (10) at a predetermined height and angle to accommodate a predetermined amount of cooked food inside, and the side surface is formed with an uneven surface (21) that is recessed or protruded from the inside to the outside or from the outside to the inside in a horizontal or vertical direction, and at least the inner surface is coated with a water-soluble coating agent.

Description

Technology Field

[0001] The present invention relates to a paper food container for heating, and more specifically, to a paper food container for heating in which an uneven surface is formed in a semicircular or arc shape horizontally or vertically on at least the inner surface of the side to prevent deformation of the side even when heated and cooked, thereby enabling stable cooking and transport of food, and at least the inner surface is coated with a water-soluble coating agent to prevent food from being absorbed into the paper on the inner surface, while simultaneously allowing it to melt with water to enable environmentally friendly recycling. Background Technology

[0002] Generally, heating containers include pots made of ceramic, aluminum, and stainless steel used for cooking food, and aluminum containers used for Home Meal Replacement (HMR) products that can be easily eaten at convenience stores or indoors as the number of one- and two-person households increases.

[0003] Double-walled pots are heavy for cooking and require washing, which is a significant inconvenience for busy modern people. Additionally, since the pot is heated by a direct combustion fire, fine dust is generated from smoke and soot. Furthermore, research results have reported that aluminum components produced when aluminum pots are heated can cause dementia.

[0004] In addition, there is a problem in that heavy metals such as arsenic and barium are detected when heating stainless steel pots, which have recently been known to be safe.

[0005] Therefore, as the number of one- and two-person households increases every year, convenient disposable food containers are gaining popularity for packaging purposes, such as cooking ready-made meals or consuming them outdoors. However, disposable food containers are mostly made of plastic, styrofoam, and aluminum, so they are still exposed to the risk of forming endocrine disruptors and heavy metals when heated or when storing heated food.

[0006] To this end, the paper cup for induction heating and the method for manufacturing the same according to Registered Patent No. 0840926 (June 18, 2008) comprises a bottom material formed by sequentially laminating a first paper layer formed of paper material, an outer surface formed of a first thermoplastic resin layer coated or laminated with a thermoplastic resin formed on the inner surface of the first paper layer, a second paper layer formed of paper material and bonded to the lower side of the outer surface to form the bottom surface of the paper cup, and a second thermoplastic resin layer coated or laminated with a thermoplastic resin formed on the upper surface of the second paper layer, and a composite film layer formed by sequentially laminating an aluminum layer formed on the upper surface of the bottom material and composed of a high-frequency induction heating element, a heat-adhesive resin layer formed on the lower surface of the aluminum layer to heat-bond the aluminum layer and the second thermoplastic resin layer, and a protective film layer formed on the upper surface of the aluminum layer to prevent oxidation and corrosion, wherein the cross-sectional area of ​​the aluminum layer is An induction heating paper cup is disclosed, characterized in that the cross-sectional area of ​​the bottom material formed on the bottom surface of the paper cup is smaller than that of the bottom material, and the protective film layer is made of plastic material.

[0007] However, the aforementioned conventional paper cup for induction heating is limited to a circular shape with a base supported on the outer surface, so it has limitations in that it is not compatible with the size of processed ramen or instant food, and there is a problem in that the heat conduction efficiency is reduced because the first paper layer, the first thermoplastic resin layer, the heat-bonded resin layer, the aluminum layer, and the protective film layer are laminated from the bottom to the top.

[0008] Accordingly, in the heating paper container of Registered Patent No. 2025857 (September 20, 2018), a food receiving portion is formed by being made of aluminum lamination and having polypropylene coated on the inner and outer surfaces, and a magnetic induction disc made of iron or stainless steel is formed on the bottom.

[0009] Therefore, it prevents the risk of fire during cooking, ensures that environmental hormones or harmful substances do not leach from the container, shortens cooking time, and provides convenience for consumption.

[0010] However, conventional paper containers have drawbacks such as difficulties in movement or handling because their sides expand and deform due to the food inside during cooking. Additionally, since aluminum, polypropylene, iron, or stainless steel must be separated from the paper for recycling, there is a problem of increased time and cost required for the recycling process. Prior art literature

[0011] (Reference 1) Registered Patent No. 0840926 (June 18, 2008) (Reference 2) Registered Patent No. 2025857 (September 20, 2018) The problem to be solved

[0012] Accordingly, the present invention aims to solve the above-mentioned problems, and the main purpose of the present invention is to provide a paper food container for heating that enables safe transport and use by preventing lateral deformation caused by contents heated during cooking.

[0013] In addition, the present invention has another objective of providing a paper food container for heating that allows the coating agent applied to the inner and outer sides of the paper to be water-soluble, so that it dissolves easily in water together with the paper and can be recycled quickly and cheaply through a very simple process. means of solving the problem

[0014] A heating paper food container according to the present invention for achieving the above-mentioned purpose is configured such that it is open upward, and the side surface is folded upward from the bottom surface at a predetermined height and angle to accommodate a predetermined amount of cooked food inside. In this configuration, the side surface is formed with an uneven surface that is recessed or protruded from the inside to the outside or from the outside to the inside in a horizontal or vertical direction, and at least the inner surface is coated with a water-soluble coating agent.

[0015] The above-mentioned uneven portion is formed to be curved inwardly or outwardly in a semicircular or arc shape.

[0016] The above water-soluble coating agent consists of 68~70% water, a polymer containing 2-propenoic acid, 2-methyl- and methyl ester and butyl2-propenoate, 21~23% 2-ethylhexyl2 and 2-propenoate, and 8~10% a polymer containing 2-propenoic acid, butyl ester and ethylbenzene. Effects of the invention

[0017] As described in the above configuration, when hot water is poured into the food inside the heating paper food container according to the present invention or heated by a microwave oven, the food maintains a stable shape without deformation of the side due to the uneven surface formed on the side, even if the food is heated and cooked, thereby allowing the cooked food to be safely transported and consumed.

[0018] In addition, the present invention provides an environmentally friendly container by simplifying the recycling process and minimizing waste generation by allowing it to be recycled by simply dissolving it in water immediately after use. Brief explanation of the drawing

[0019] FIG. 1 is a diagram illustrating a paper food container for heating according to the present invention. FIG. 2 is a front view illustrating a paper food container for heating according to the present invention. FIG. 3 is a side cross-sectional view illustrating an embodiment of an uneven portion in a paper food container for heating according to the present invention. FIG. 4 is a side cross-sectional view illustrating another embodiment of the uneven surface in a paper food container for heating according to the present invention. Specific details for implementing the invention

[0020] Below, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the invention.

[0021] The scope of the present invention shall not be interpreted as being limited by the embodiments described in the text.

[0022] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the description of the embodiments, the same reference numerals are assigned to identical components, and in some cases, the description of the same reference numerals is omitted.

[0023] FIG. 1 is a diagram illustrating a paper food container for heating according to the present invention, and FIG. 2 is a side cross-sectional view illustrating a paper food container for heating according to the present invention.

[0024] As illustrated, the present invention is configured with a bottom surface (10) and a side surface (20), wherein the side surface (20) is formed at a predetermined height by being bent upward from the bottom surface (10) at a predetermined angle.

[0025] The container of the present invention may have a cross-sectional shape formed as a square or a rectangle, or may have a polygon or a circle.

[0026] That is, according to the shape of the bottom surface (10), the side surface (20) is formed at a predetermined height and opened upward by being bent upward from the bottom surface (10), and an uneven surface (21) is formed in the horizontal or vertical direction on each side surface (20).

[0027] The uneven portion (21) of the side (20) is formed in a shape that is indented or protruded from the inner side to the outer side or from the outer side to the inner side of the plate surface as shown in FIGS. 3 and 4, and is formed in a shape that is curved in one direction in a semicircle or arc shape.

[0028] The uneven surface (21) may be formed only on the long side when the cross-section is rectangular, as shown in the example drawing, but depending on the size of the surface, it may also be formed across the entire front surface when the cross-section is square or circular.

[0029] In particular, the present invention is designed to be coated with a water-soluble coating agent, at least on the inner surface.

[0030] A water-soluble coating agent is applied to the inner surface of the sides to prevent food contents from being absorbed into the paper.

[0031] Water-soluble coating agents can be coated not only on the inner surface but also on the outer surface, and not only is the coating power maintained above a certain temperature, but components can also be separated or completely dissolved in water.

[0032] Meanwhile, it is most preferable that the water-soluble coating agent be composed of 68-70% water, a polymer containing 2-propenoic acid, 2-methyl- and methyl ester and butyl2-propenoate, 21-23% 2-ethylhexyl2 and 2-propenoate, and 8-10% a polymer containing 2-propenoic acid, butyl ester and ethylbenzene.

[0033] The operation and effects of the heating paper food container according to the present invention, having the configuration as described above, are explained in more detail as follows.

[0034] The heating paper food container of the present invention is largely similar to the prior art in that the side surface (20) is formed at a predetermined angle and height from the bottom surface (10), while the upper part of the side surface is open upward.

[0035] Accordingly, the present invention forms an empty space inside to accommodate food to be cooked, and forms an uneven surface (21) in the horizontal or vertical direction on each side (20) surrounding the space.

[0036] The uneven surface (21) is formed to be curved in a semicircle or arc shape from the inside to the outside or from the outside to the inside.

[0037] The food to be cooked is placed inside the container formed in this way, and a lid (not shown) is placed over the open top of the side (20) so that the food inside can be protected.

[0038] When food is filled into such a container and hot water is poured or heated by a heating means, the food inside is also heated. Even if the contents are heated, the side (20) maintains its shape stably, so the container can be maintained stably.

[0039] Therefore, not only can the heated container be safely moved while maintaining side stability, but food can also be safely consumed.

[0040] In particular, the present invention has a very useful effect in that it is not only very simple to manufacture, but also allows the contents to be separated by component while dissolving in water or liquid, thereby facilitating the separation of components for recycling and minimizing the waste treatment process by applying at least the inner surface as a water-soluble coating agent so that the contents are not absorbed into the paper.

[0041] As such, it is obvious to those skilled in the art that the present invention is not limited to the described embodiments and can be modified and varied in various ways without departing from the spirit and scope of the invention. Accordingly, such modifications or variations should be deemed to fall within the scope of the claims of the present invention. Explanation of the symbols

[0042] 10 : Bottom surface 20: Side 21: Uneven parts

Claims

Claim 1 A heating paper food container configured such that the side surface (20) is formed by being folded upward from the bottom surface (10) at a predetermined height and angle to accommodate a predetermined amount of cooked food inside, wherein the side surface is formed with an uneven surface (21) that is recessed or protruded from the inside to the outside or from the outside to the inside in a horizontal or vertical direction, and at least the inner surface is coated with a water-soluble coating agent. Claim 2 A heating paper food container according to claim 1, wherein the uneven portion (21) is formed to be curved inwardly or outwardly in a semicircular or arc shape. Claim 3 A heating paper food container according to claim 1, wherein the water-soluble coating agent comprises 68-70% water, a polymer containing 2-propenoic acid, 2-methyl- and methyl ester and butyl2-propenoate, 21-23% 2-ethylhexyl2 and 2-propenoate, and 8-10% a polymer containing 2-propenoic acid, butyl ester and ethylbenzene.

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