Method for manufacturing a disposable packaging container and method for packaging food or cosmetic products using a disposable packaging container manufactured therefrom

Abstract

A manufacturing method of a disposable packaging container and a method of packaging food or cosmetics using the disposable packaging container manufactured thereby are provided. The manufacturing method of the disposable packaging container includes a hollow body forming process of placing a tubular thermoplastic synthetic resin in a central portion of split dies, closing the split dies, blowing compressed air into the thermoplastic synthetic resin to form a spherical hollow body, and then cooling and solidifying the hollow body and taking it out, a hollow body fixing process of vertically orienting a parting line of the hollow body and inserting and fixing the hollow body in a semispherical seating groove, and a filling port forming process of forming a filling port at an uppermost portion of the parting line using a heated piercing needle.

Description

Technical Field

[0001] This invention relates to a method for manufacturing a disposable packaging container and a method for packaging food or cosmetics using the disposable packaging container manufactured therefrom. More specifically, this invention relates to a method for manufacturing a disposable packaging container for food or cosmetics, the method of which allows a user to hold the packaging container with two fingers and conveniently press the packaging container to squeeze out the contents, and improves the sealing performance by making the sealing film sealing the filling opening uniform and stable, thereby ensuring the safety of the contents. This invention also relates to a method for packaging food or cosmetics using the packaging container manufactured therefrom. Background Technology

[0002] Recently, there has been an increasing demand for so-called single-dose packaging among consumers who value ease of use and efficiency.

[0003] This single-dose packaging contains a small amount of product, making it easy to use. The single-dose packaging is also convenient for carrying during outdoor activities such as travel or excursions, prevents external contamination to improve shelf life, and is primarily used in the food, cosmetics, and pharmaceutical industries due to its hygienic properties.

[0004] As prior art, Patent Document 1 discloses a cosmetic ball and a method for manufacturing the same.

[0005] The prior art includes: forming a hollow, sealed space using a shell portion made of a biodegradable material through blow molding; forming an injection hole (filling port) in a portion of the shell portion and filling the sealed space with contents; and sealing the injection hole. Therefore, the contents can be safely preserved in a sealed state, thereby preventing contamination and oxidation caused by contact with air.

[0006] However, existing outer shells are manufactured into spherical hollow bodies by blow molding, as described below. Molten tubular preforms are placed in a two-part, bag-shaped split mold. The mold is closed, and compressed air is blown into the preform, causing it to expand under the pressure of the compressed air and fit tightly against the inner wall of the mold cavity. Due to these characteristics, during blow molding, the portion in contact with the gap formed by the opening and closing of the two parts of the mold bulges out due to various factors such as pressure difference, material properties, and uneven temperature and pressure control, thus becoming relatively thick.

[0007] Furthermore, a parting line, serving as a dividing mark, is formed at the boundary where the two parts of the split mold come into contact with each other, and the parting line protrudes outward.

[0008] Therefore, the overall thickness of the outer shell is uneven, and the relatively thicker parts with the parting line may harden at low temperatures, such as in winter.

[0009] Therefore, when an injection hole (filling port) is formed in a relatively thin part of the outer casing, it is quite difficult for the user to hold the outer casing with two fingers and press it to squeeze out the contents.

[0010] Furthermore, when the injection hole is formed in a relatively thin portion of the outer casing and a sealing film is thermally fused thereto to seal the injection hole, the outer casing is easily crushed and deformed, resulting in the sealing film not being thermally fused evenly over the entire area.

[0011] Furthermore, a gap may form between the heat-fusion interface of the sealing film and the outer casing, and the joint area may become narrower, resulting in a significant reduction in sealing performance.

[0012] It should be noted that the background technology or prior art described above is information held by the inventor or obtained in the process of deriving and completing this disclosure. It is recorded here because it helps to understand the technical significance of this disclosure and is useful for the retrieval and examination of related technologies. Summary of the Invention

[0013] Technical issues

[0014] Therefore, while comprehensively considering the above-mentioned matters and striving to solve the technical limitations and problems of the prior art, the inventors of this invention have made arduous and continuous research efforts to develop a method for manufacturing a disposable packaging container with a new form and structure, as well as a method for packaging food or cosmetics using the disposable packaging container manufactured therefrom. The method allows users to hold the packaging container with two fingers and conveniently press it to squeeze out the contents. It also allows the sealing film used to seal the filling opening to be uniformly and stably heat-fused, thereby improving sealing performance and ensuring the safety of the contents. Furthermore, it removes oxygen from the hollow body to prevent oxidation of the contents and maintain freshness. As a result of this research, the inventors have proposed this invention.

[0015] Therefore, one of the technical problems and objectives of this invention is to provide a method for manufacturing a disposable packaging container, which allows a user to hold the packaging container with two fingers and conveniently press the packaging container to squeeze out the contents.

[0016] Another technical problem and objective of this invention is to provide a method for manufacturing a disposable packaging container, wherein the manufacturing method enables the sealing film to be welded uniformly and stably to improve sealing performance.

[0017] Another technical problem and objective of this invention is to provide a method for packaging food or cosmetics using disposable packaging containers, the method being able to prevent the contents from oxidizing and maintain freshness.

[0018] The technical problems and objectives to be achieved by this invention are not limited to those described above. Those skilled in the art can clearly understand other technical problems and objectives not described above from the following description.

[0019] Problem-solving methods

[0020] To achieve the objectives of this invention, according to one embodiment of the invention, a method for manufacturing a disposable packaging container is provided as a specific means of embodying the following novel concept, which is used to solve the above-mentioned technical problems and effectively achieve the specific technical objectives. The manufacturing method includes: (a) a hollow body molding process, in which tubular bio-based thermoplastic synthetic resin heated and molten by an extrusion molding machine is placed in the central part of a two-part split mold, the split mold is closed, and compressed air is blown into the thermoplastic synthetic resin to expand the thermoplastic synthetic resin and cause the thermoplastic synthetic resin to expand. (a) A process of forming a spherical hollow body by tightly adhering the grease to the inner wall of the cavity of the split mold, then pressing the hollow body against the cold mold surface to cool and solidify the hollow body, and removing the hollow body; (b) A process of fixing the hollow body by vertically orienting the parting line of the hollow body and inserting and fixing the hollow body into a hemispherical placement groove recessed in the upper surface of the fixture, wherein the parting line is formed at the boundary where the two parts of the split mold contact each other; and (c) A process of forming a filling port by forming a filling port at the uppermost part of the parting line of the hollow body using a heated puncture needle.

[0021] Therefore, in this invention, the filling port is formed in the portion of the hollow body where the cross-sectional thickness of the parting line is relatively large. Thus, when the user squeezes out the contents, the user can naturally hold and press the relatively thinner portion of the hollow body with two fingers, making it easy to squeeze out the contents even in low temperatures such as winter.

[0022] Furthermore, in another exemplary embodiment of the present invention, in the hollow body fixing process (b), the clamp having a narrow and long positioning groove can be used, the positioning groove being formed in the inner peripheral surface of the placement groove in a shape corresponding to the parting line of the hollow body to traverse the center of the placement groove, and the hollow body can be inserted into the placement groove such that the parting line of the hollow body is embedded in the positioning groove of the clamp.

[0023] Therefore, the parting line of the hollow body can be made vertically oriented more naturally and easily, and the hollow body can be fixed in the mounting slot of the clamp.

[0024] Furthermore, in another exemplary embodiment of the present invention, in the hollow body fixing process (b), after the hollow body is inserted into the placement groove of the fixture, the hollow body may be vibrated or the hollow body may be repeatedly shaken to rotate the hollow body, thereby making the parting line of the hollow body vertically oriented and embedded in the positioning groove of the fixture.

[0025] Therefore, the parting line of the hollow body can be vertically oriented more quickly and conveniently, and the hollow body can be fixed in the mounting slot of the clamp.

[0026] On the other hand, as a specific means of another embodiment of the present invention, a method for packaging food or cosmetics using a disposable packaging container manufactured by the above-described method for manufacturing disposable packaging containers is provided. The method for packaging food or cosmetics includes: a contents filling step, in which the filling opening of the packaging container is positioned upwards, a filling needle is inserted into the hollow body through the filling opening, and contents, as food or cosmetics, are filled into the hollow body; and a filling opening sealing step, in which a sealing film is positioned on the upper surface of the hollow body, heat and pressure are applied using a heating plate to flatten the periphery of the filling opening, and the sealing film is heat-fused to seal the filling opening.

[0027] Therefore, the present invention can minimize the crushing deformation of the hollow body during the heat fusion of sealing the filling port with the sealing film, thereby making the sealing film welded uniformly and stably without gaps, thereby improving the sealing performance.

[0028] Furthermore, in another exemplary embodiment of the present invention, the method may further include a nitrogen purging step, wherein nitrogen is injected into the hollow body through the filling port before the filling port is sealed with the sealing membrane to remove oxygen and moisture.

[0029] Therefore, it can prevent the oxidation and deterioration of the contents, the growth of mold, etc., thereby maintaining the freshness and quality of the contents and extending their shelf life.

[0030] Furthermore, in another exemplary embodiment of the invention, the method may also include a packaging inspection step, which involves inspecting for sealing defects and leakage of contents after the filling opening has been sealed with the sealing film.

[0031] Therefore, when the packaging is not completely sealed or the contents leak, the set temperature and pressure errors of the heating plate, the amount of contents filled, etc., can be quickly identified and corrected, thereby reducing the product defect rate.

[0032] The effects of the invention

[0033] According to one embodiment of the technical concept upon which the unique solution for solving the technical problem of the present invention is based, the filling port is formed in a portion of the outer surface of the hollow body, the portion having a relatively large cross-sectional thickness and including a parting line. Therefore, when a user squeezes out the contents contained in the hollow body, the user can naturally hold and press the relatively thinner portion of the hollow body with two fingers.

[0034] That is, the relatively thinner portions of the hollow body remain soft and do not harden even at low temperatures such as in winter, and can be flexibly deformed by pressure applied with two fingers. Therefore, consumers can easily remove the sealing film and press the hollow body to squeeze out the contents.

[0035] Furthermore, during the heat fusion of sealing the filling port with the sealing film, the crushing deformation of the hollow body can be minimized, and the sealing film can be uniformly and stably fused to the periphery of the filling port of the hollow body without gaps.

[0036] Therefore, by providing a complete seal, leakage of contents can be effectively prevented, and the entry of external contaminants can be blocked, thereby improving product safety.

[0037] Furthermore, nitrogen can be injected into the hollow body to remove oxygen and moisture, and to prevent oxidation and deterioration of the contents, mold growth, etc., thereby maintaining the freshness and quality of the contents and extending their shelf life.

[0038] Here, the effects of the present invention are not limited to the above description, and those skilled in the art can clearly understand other effects not described above from the claims. Attached Figure Description

[0039] Figure 1 This is a flowchart schematically illustrating a method for manufacturing a disposable packaging container according to an embodiment of the present invention.

[0040] Figure 2 This is a perspective view showing a hollow body to facilitate understanding of a method for manufacturing a disposable packaging container according to an embodiment of the present invention.

[0041] Figure 3 This is a cross-sectional view showing the hollow body to facilitate understanding of a method for manufacturing a disposable packaging container according to an embodiment of the present invention.

[0042] Figure 4 This is a perspective view showing a clamp to facilitate understanding of a method for manufacturing a disposable packaging container according to an embodiment of the present invention.

[0043] Figure 5 This is a perspective view showing the clamp and the hollow body to facilitate understanding of a method for manufacturing a disposable packaging container according to an embodiment of the present invention.

[0044] Figure 6 This is a partial cross-sectional view showing the clamp and the hollow body to facilitate understanding of a method for manufacturing a disposable packaging container according to an embodiment of the present invention.

[0045] Figure 7 This is a cross-sectional view to facilitate understanding of a method for manufacturing a disposable packaging container according to an embodiment of the present invention.

[0046] Figure 8 This is a perspective view showing the hollow body to facilitate understanding of a method for manufacturing a disposable packaging container according to an embodiment of the present invention.

[0047] Figure 9 This is a cross-sectional view showing the hollow body to facilitate understanding of a method for manufacturing a disposable packaging container according to an embodiment of the present invention.

[0048] Figure 10 This is a flowchart schematically illustrating a method for packaging food or cosmetics using a disposable packaging container according to another embodiment of the present invention.

[0049] Figure 11 This is a partial cross-sectional view to facilitate understanding of a method for packaging food or cosmetics using disposable packaging containers according to another embodiment of the present invention.

[0050] Figure 12 This is a partial cross-sectional view to facilitate understanding of a method for packaging food or cosmetics using disposable packaging containers according to another embodiment of the present invention.

[0051] Figure 13 This is a perspective view showing a packaging container to facilitate understanding of a method of packaging food or cosmetics using a disposable packaging container according to another embodiment of the present invention. Detailed Implementation

[0052] Hereinafter, embodiments according to the present invention will be described in more detail with reference to the accompanying drawings.

[0053] Before the description, the following terms are defined in consideration of their function in this invention, and should be interpreted as concepts consistent with the technical concept of this invention, and should be interpreted as having meanings commonly used or generally accepted in the relevant technical field.

[0054] Furthermore, a detailed description of a known function or configuration related to the present invention will be omitted if it is believed that such a detailed description would obscure the gist of the invention.

[0055] The accompanying drawings may show some parts in an exaggerated or simplified manner to illustrate and understand the composition, operation and working principle of the technology and to improve technical clarity. The various components shown in the drawings do not necessarily correspond exactly to the actual size and shape.

[0056] As used herein, the term "and / or" includes any combination of the associated listed items or any one of the associated listed items. Furthermore, when describing a section that includes a component, unless otherwise stated, that section may also include another component, without excluding that other component.

[0057] That is, the terms "comprising", "having", etc., as used herein indicate the presence of the stated features, figures, steps, operations, components, parts, or combinations thereof, without excluding the presence or addition of one or more other features, figures, steps, operations, components, parts, or combinations thereof.

[0058] Unless the context explicitly specifies a particular order, the individual operations and steps may be performed in a different order than that stated. That is, the individual operations and steps may be performed in the stated order, substantially simultaneously, or in the reverse order.

[0059] As used in this invention, the terms "part" and "unit" refer to a module that performs at least one intended function or specific operation in a device or system, acting as a unit or functioning. Such a module may be implemented mechanically or electronically by hardware, software, a combination of hardware and software, or a device or component capable of performing operations independently.

[0060] Furthermore, the terms "upper end," "lower end," "upper surface," "lower surface," "upper part," "lower part," "upper side," "lower side," "front," "rear," "left," and "right" used in this invention are for convenience and are used to distinguish the relative positions of the various components or to describe the direction of movement. For example, the upward and downward directions in the drawings can be referred to as the upper and lower directions, respectively; the longitudinal direction can be referred to as the front-back direction; and the width direction can be referred to as the left-right direction.

[0061] like Figure 1 As shown, a method for manufacturing a disposable packaging container according to one embodiment of the present invention generally includes a hollow body forming process, a hollow body fixing process, and a filling port forming process.

[0062] Hollow body molding process

[0063] In this process, tubular bio-based thermoplastic synthetic resin, heated and molten by an extruder, is placed in the center of a two-part split mold, which is then closed. Compressed air is blown into the thermoplastic synthetic resin, causing it to expand and adhere tightly to the inner wall of the cavity of the split mold, thereby forming a spherical hollow body (10). Subsequently, the moving mold and the fixed mold of the split mold are separated to open the mold. Furthermore, the hollow body (10) is removed from the split mold, pressed against the cold surface of a cooling mold to cool and solidify, and then removed from the cooling mold.

[0064] During this process, if Figure 2 and Figure 3 As shown, the portion of the hollow body (10) that contacts the gap formed by the opening and closing of the two parts of the split mold will bulge due to various factors such as pressure difference, material properties, and uneven temperature and pressure control, thus becoming relatively thick. In addition, a parting line (11) as a dividing mark is formed at the boundary where the two parts of the split mold contact each other.

[0065] Here, the hollow body (10) may have a thickness in the range of 0.3 mm to 1.5 mm, so as to stably maintain the shape of the hollow body (10) even when the hollow body (10) is filled with contents with a high water content. When the contents are cosmetics, the internal storage space may have a capacity in the range of 0.5 mL to 5 mL to suit single use.

[0066] Here, the hollow body (10) is preferably formed from an environmentally friendly thermoplastic synthetic resin using bio-based raw materials, which will biodegrade in nature after a predetermined time after being buried, and can prevent the generation of microplastics.

[0067] For example, BioBlend is a thermoplastic blend obtained by mixing 25% of a biodegradable, low-crystallinity biopolymer (NuPlastiQ) with 75% of extrusion-grade LDPE. The biodegradable, low-crystallinity biopolymer is prepared by BioLogiQ, Inc., located in Idaho, USA, through a special processing of plasticized starch resin (starch extracted from plants such as potatoes or corn) with low water content. The hollow body (10) can be formed from a bio-based thermoplastic synthetic resin prepared by mixing the BioBlend with 3% of LDPE-based masterbatch.

[0068] <Hollow Body Fixing Process>

[0069] like Figures 4 to 6 As shown, in this process, the parting line (11) of the hollow body (10) is vertically oriented, and the hollow body (10) is inserted and fixed in the hemispherical mounting groove (21) recessed in the upper surface of the fixture (20). The parting line (11) is formed at the boundary where the two parts of the split mold contact each other.

[0070] Here, the clamp (20) has a narrow and long positioning groove (22), which is formed in the inner circumferential surface of the placement groove (21) in a shape corresponding to the parting line (11) of the hollow body (10) and extends across the center of the placement groove (21). Therefore, the hollow body (10) can be inserted and fixed in the placement groove (21) such that the parting line (11) of the hollow body (10) is naturally embedded in the positioning groove (22) of the clamp (20).

[0071] Furthermore, after the hollow body (10) is inserted into the placement slot (21) of the clamp (20), vibration can be applied or it can be repeatedly shaken in the horizontal direction to make the hollow body (10) rotate in place, thereby making the parting line (11) of the hollow body (10) vertically oriented and embedded in the positioning slot (22) of the clamp (20).

[0072] During this process, since the portion of the hollow body (10) with the parting line (11) is relatively thick, the center of gravity of the hollow body (10) is located along the parting line (11). Therefore, the parting line (11) of the hollow body (10) can move naturally and be vertically oriented, and can be aligned with the positioning groove (22) of the clamp (20) and smoothly embedded therein.

[0073] <Filling port formation process>

[0074] like Figures 7 to 9 As shown, in this process, a heated puncture needle (30) is used to form a filling port (12) at the uppermost part of the parting line (11) of the hollow body (10).

[0075] That is, while the puncture needle (30) moves downward and upward, the filling port (12) can be formed in the uppermost part of the parting line (11) of the hollow body (10), the uppermost part being located in a straight line with the puncture needle (30).

[0076] Here, the puncture needle (30) can be structured as follows: the puncture needle (30) moves up and down according to the operation of the actuator and is heated to a high temperature by a separate built-in heating device.

[0077] In a method for manufacturing a disposable packaging container according to an embodiment of the present invention, as described above, the filling port (12) may be formed in a portion of the hollow body (10) with a relatively thick cross-sectional area, i.e., in the portion of the parting line (11) of the hollow body (10).

[0078] Therefore, when the user squeezes out the contents, the user can naturally hold and press the relatively thin part of the hollow body (10) with two fingers.

[0079] Therefore, the hollow body (10) can be flexibly deformed by pressure applied with two fingers even at low temperatures such as winter, allowing the user to easily press the hollow body (10) to squeeze out the contents.

[0080] like Figure 10 As shown, a method for packaging food or cosmetics using a disposable packaging container according to another embodiment of the present invention generally includes a <content filling process>, a <nitrogen purging process>, a <filling port sealing process>, and a <packaging inspection process>.

[0081] <Content filling process>

[0082] like Figure 11 As shown, in this process, the hollow body (10) is inserted and placed in the fixture (20) with the filling port (12) of the hollow body (10) facing upward. The filling needle (40) is inserted into the hollow body (10) through the filling port (12) and the contents of food or cosmetic are forcibly injected into the hollow body (10) to fill the hollow body (10).

[0083] That is, the filling needle (40) can move downward and upward, and can discharge the contents in the state where the filling needle (40) is inserted into the hollow body (10) via the filling port (12) in the uppermost part of the parting line (11) formed in the hollow body (10), the filling port (12) being located in a straight line with the filling needle (40).

[0084] Here, the filling needle (40) can be structured as follows: the filling needle (40) moves up and down according to the operation of the actuator, a predetermined amount of contents stored in a separate storage tank is pressurized and delivered by a pump, and the contents are discharged according to the opening and closing of a valve.

[0085] In addition, in order to minimize the filling time and prevent the contents from splashing out, the filling needle (40) may have a structure with an exhaust port through which the air inside the hollow body (10) is discharged while the contents are being injected; or a filling needle (40) with a cross-sectional diameter smaller than that of the filling port (12) may be used.

[0086] <Nitrogen Replacement Process>

[0087] In this process, nitrogen gas is injected into the internal space of the hollow body (10) through the filling port (12) to remove oxygen and moisture.

[0088] For example, air can be completely removed from the packaging container by vacuuming in a vacuum chamber, and nitrogen supplied by a nitrogen generator can be injected into the hollow body (10) to purge the hollow body (10), thereby displacing oxygen and maximizing hygiene. Therefore, oxidation, rancidity, and deterioration of the contents can be prevented before the packaging container is opened, and freshness can be maintained and spoilage delayed, thus extending the shelf life of the contents.

[0089] <Sealing process of filling port>

[0090] like Figure 12 As shown, in this process, the sealing film (50) is positioned on the upper surface of the hollow body (10), heat and pressure are applied by the heating plate (60) to flatten the periphery of the filling port (12), and the sealing film (50) is heat-fused to seal the filling port (12).

[0091] That is, the heating plate (60) can be heated to 180°C to 240°C and can be gradually moved downwards, so that the opposite lower surface of the sealing film (50) and the periphery of the filling port (12) of the hollow body (10) are simultaneously fused together by thermal deformation, thereby sealing the filling port (12) to prevent the contents from leaking to the outside.

[0092] Here, the sealing film (50) has a structure in which polyethylene (PE) is coated on both surfaces of a paper-thin aluminum foil, which blocks the movement of oxygen and inhibits oxidation. Therefore, when heat and pressure are applied with the heating plate (60), the sealing film (50) and the periphery of the filling port (12) of the hollow body (10) can simultaneously melt and firmly fuse together through thermal deformation.

[0093] On the other hand, the sealing film (50) can be continuously supplied by gradually unwinding the rolled film sheet on an unwinding machine, can be punched into a predetermined shape using a die-cutting machine, can be picked up by suction using the heating plate (60), can be moved above the upper surface of the hollow body (10), and can be moved downwards, pressed, and heat-fused. Furthermore, the remaining film sheet after punching can be rewound and recycled by a rewinding machine.

[0094] <Packaging Inspection Process>

[0095] like Figure 13 As shown, in this process, after sealing the filling port (12) of the hollow body (10) with the sealing film (50), sealing defects and leakage of contents can be checked.

[0096] That is, since the packaging container is sealed by simultaneously heating the sealing film (50) and the hollow body (10) for a short period of time, packaging defects may occur due to various factors such as temperature and environment. Therefore, after the filling port (12) is sealed, the packaging condition is inspected, including whether there are sealing defects or leakage of contents.

[0097] Here, the packaging inspection process can be carried out, for example, by the following methods: a pressure testing method, in which the internal pressure of the packaging container filled with the contents is checked based on the load and pressure values ​​read by a weighing sensor when the packaging container is pressurized using a pulse press; or a heat sealing inspection method, in which the packaging container filled with the contents is photographed at an appropriate distance using a thermal imaging camera, and the heat distribution pattern is analyzed to determine whether the packaging container is normal or defective.

[0098] In this method of packaging food or cosmetics using a disposable packaging container according to another embodiment of the present invention, due to the structural characteristic that the filling port (12) is formed in a portion of the packaging container with a relatively thick cross-sectional area, i.e., in the portion of the parting line (11) of the hollow body (10), the crushing deformation of the hollow body (10) during the heat fusion of sealing the filling port (12) of the hollow body (10) with the sealing film (50) can be minimized.

[0099] Therefore, the sealing film (50) can be uniformly and stably fused to the periphery of the filling port (12) of the hollow body (10) without gaps, thereby improving the sealing performance.

[0100] Furthermore, by filling the hollow body (10) with the contents and then injecting nitrogen into the hollow body (10) to remove oxygen and moisture, the oxidation and deterioration of the contents, the growth of mold, etc., can be prevented, and the freshness and quality of the contents can be maintained.

[0101] Hereinafter, in the components related to the method of packaging food or cosmetics using disposable packaging containers according to another embodiment of the present invention, components that have the same or similar operation and effect as components of the method of manufacturing disposable packaging containers according to the above embodiments are indicated by the same reference numerals, and repeated detailed descriptions of these components are omitted.

[0102] On the other hand, the present invention is not limited to the above-described embodiments and drawings. It will be apparent to those skilled in the art that, without departing from the technical concept of the present invention, the present invention can of course be modified and applied in various ways not shown herein, and can also be widely applied by replacing components or changing to other equivalent embodiments.

[0103] Therefore, matters relating to modifications and applications of the technical features of the present invention should be interpreted as being included within the technical concept and scope of the present invention.

[0104] Practicality in industry

[0105] The present invention relates to a method for manufacturing a disposable packaging container according to an embodiment of the invention, and a method for packaging food or cosmetics using the packaging container manufactured therefrom, with the aim of obtaining a disposable packaging container that allows a user to hold the packaging container with two fingers and conveniently press the packaging container to squeeze out the contents, while also ensuring the safety of the contents and improving sealing performance, thus having industrial applicability.

Claims

1. A method for manufacturing a disposable packaging container, characterized in that, The manufacturing method includes: (a) Hollow body molding process: The tubular thermoplastic synthetic resin heated and melted by the extrusion molding machine is placed in the center of the split mold divided into two parts. The split mold is closed, and compressed air is blown into the thermoplastic synthetic resin to make the thermoplastic synthetic resin expand and fit tightly against the inner wall of the cavity of the split mold, thereby forming a spherical hollow body. Then the hollow body is cooled and solidified for a predetermined time, and the hollow body is removed from the split mold. (b) A hollow body fixing process, wherein the parting line of the hollow body is vertically oriented, and the hollow body is inserted into and fixed in a hemispherical mounting groove recessed in the upper surface of the fixture, wherein the parting line is formed at the boundary where the two parts of the split mold of the hollow body contact each other; and (c) Filling port forming process, in which a heated puncture needle is used to form a filling port at the uppermost part of the parting line of the hollow body.

2. The method for manufacturing a disposable packaging container according to claim 1, characterized in that, In the hollow body fixing process in (b), the fixture includes a narrow and long positioning groove formed in the inner circumferential surface of the placement groove in a shape corresponding to the parting line of the hollow body to traverse the center of the placement groove, and the hollow body is inserted and fixed in the placement groove such that the parting line of the hollow body is embedded in the positioning groove of the fixture.

3. The method for manufacturing a disposable packaging container according to claim 2, characterized in that, The hollow body fixing process (b) includes: inserting the hollow body into the placement groove of the fixture, and then applying vibration to the hollow body or repeatedly shaking the hollow body to make the hollow body rotate, thereby making the parting line of the hollow body vertically oriented and embedded in the positioning groove of the fixture.

4. A method for packaging food or cosmetics using a disposable packaging container manufactured according to any one of claims 1 to 3, characterized in that, The method includes: In the contents filling process, the disposable packaging container is positioned with the filling opening facing upwards; a filling needle is inserted into the hollow body of the disposable packaging container through the filling opening; and the hollow body is filled with contents intended for food or cosmetics. In the filling port sealing process, a sealing film is positioned on the upper surface of the hollow body, heat and pressure are applied using a heating plate to flatten the periphery of the filling port, and the sealing film is heat-fused to seal the filling port.

5. The method for packaging food or cosmetics using disposable packaging containers according to claim 4, characterized in that, Also includes: In the nitrogen purging process, before sealing the filling port with the sealing membrane, nitrogen is injected into the hollow body through the filling port to remove oxygen and moisture.

6. The method for packaging food or cosmetics using disposable packaging containers according to claim 4, characterized in that, Also includes: The packaging inspection process involves checking for sealing defects and leakage of contents after the filling opening is sealed with the sealing film.

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