Pulp mold packaging

Abstract

A pulp mold packaging according to one embodiment of the present invention comprises: a main body portion including an internal space capable of storing a product; and a cover portion disposed on the upper part of the main body portion and coupled thereto; wherein the cover portion includes a first pulp mold disposed on the upper part and a second pulp mold disposed on the lower part, and the main body portion includes a third pulp mold disposed on the upper part and a fourth pulp mold disposed on the lower part, and the cover portion includes a first internal space formed between the first pulp mold and the second pulp mold, and the main body portion includes a second internal space formed between the third pulp mold and the fourth pulp mold, and an insulating material for thermal insulation is disposed in the first internal space formed between the first pulp mold and the second pulp mold of the cover portion and the second internal space formed between the third pulp mold and the fourth pulp mold of the main body portion.

Description

Technology Field

[0001] The present invention relates to a pulp mold packaging, and more specifically, to a pulp mold packaging comprising: a main body portion including an internal space capable of storing a product; and a cover portion disposed on the upper part of the main body portion and coupled thereto; wherein the cover portion includes a first pulp mold disposed on the upper part and a second pulp mold disposed on the lower part, and the main body portion includes a third pulp mold disposed on the upper part and a fourth pulp mold disposed on the lower part, and the cover portion includes a first internal space formed between the first pulp mold and the second pulp mold, and the main body portion includes a second internal space formed between the third pulp mold and the fourth pulp mold, and an insulating material for thermal insulation is disposed in the first internal space formed between the first pulp mold and the second pulp mold of the cover portion and the second internal space formed between the third pulp mold and the fourth pulp mold of the main body portion. Background Technology

[0003] Molded pulp packaging is utilized in a wide variety of fields and provides a biodegradable, eco-friendly packaging solution. Products from molded pulp are often used as protective packaging for consumer goods, such as cellular phones, computer equipment, and DVD players, as well as other electronic consumer goods and products requiring packaging protection. Additionally, molded pulp objects can be used in the food industry, such as for hamburger shells, cups for liquid contents, and dining plates. Furthermore, molded pulp objects can be used to form the structural cores of lightweight sandwich panels or other lightweight load-bearing structures. The shapes of these products are often complex, and in many cases, they have a short expected time presence in the market. Moreover, production series are relatively small in size because the low production cost of pulp molds (which are also fast and cost-effective) makes the mold manufacturing process advantageous.

[0005] In conventional pulp molding lines, for example, referring to US 6,210,531, there are fibers containing a slurry supplied to a molding die by vacuum, for example. The fibers are contained by a wire mesh applied to the molding surface of the molding die, and some of the water is absorbed through the molding die by applying a vacuum source to the bottom of the mold. Then, the molding die is slowly pressed toward a complementary female part, and at the end of the pressing, the vacuum of the molding die can be replaced by a gentle blow of air, and at the same time, a vacuum is applied to the complementary inverted shape, thereby forcing the molded pulp object to be delivered to the complementary female part. In the next step, the molded pulp object is transferred to a conveyor belt that delivers the molded pulp object to an oven for drying.

[0007] Conventional pulp molds used in the processes described above are commonly constructed by utilizing a main body covered by a wire mesh on the molding surface. The wire mesh prevents fibers from escaping through the mold but allows water to pass through. The main body is conventionally constructed by combining aluminum blocks containing several holes for water passage to achieve a desired shape. The wire mesh is commonly applied to the main body by welding. However, welding is complex, time-consuming, and expensive. Furthermore, the grid from the wire mesh, as well as the weld spots, are often visible in the surface structure of the resulting product, providing undesirable roughness to the final product. Additionally, the method of applying the wire mesh imposes constraints on the complexity of the shapes of the molding die, making it impossible to form specific configurations in terms of shape.

[0009] In addition, existing pulp mold products had the problem of not being widely used because they were weak in strength, easily collapsed or broke, and often resulted in damage to the product itself.

[0011] In addition, existing pulp mold products had a problem in that they could not be used for temperature-controlled logistics delivery, such as for fresh products, because their insulation effect was poor.

[0013] Prior art Korean registered patent No. 10-1773964-0000 discloses an eco-friendly cold-insulating pulp mold containing potato starch and a method for manufacturing the same, and Korean registered patent No. 10-1832991-0000 discloses a porous sintered pulp mold including a partially machined flat bottom surface. Prior art literature

[0015] Republic of Korea Registered Patent No. 10-1773964-0000 Republic of Korea Registered Patent No. 10-1832991-0000 The problem to be solved

[0016] The object of the present invention is to provide a pulp mold packaging comprising: a main body portion including an internal space for storing a product; and a cover portion disposed on the upper part of the main body portion and coupled thereto; wherein the cover portion includes a first pulp mold disposed on the upper part and a second pulp mold disposed on the lower part, the main body portion includes a third pulp mold disposed on the upper part and a fourth pulp mold disposed on the lower part, the cover portion includes a first internal space formed between the first pulp mold and the second pulp mold, the main body portion includes a second internal space formed between the third pulp mold and the fourth pulp mold, and an insulating material for thermal insulation is disposed in the first internal space formed between the first pulp mold and the second pulp mold of the cover portion and the second internal space formed between the third pulp mold and the fourth pulp mold of the main body portion. means of solving the problem

[0018] A pulp mold packaging according to one embodiment of the present invention comprises: a main body portion including an internal space capable of storing a product; and a cover portion disposed on the upper part of the main body portion and coupled thereto; wherein the cover portion includes a first pulp mold disposed on the upper part and a second pulp mold disposed on the lower part, and the main body portion includes a third pulp mold disposed on the upper part and a fourth pulp mold disposed on the lower part, and the cover portion includes a first internal space formed between the first pulp mold and the second pulp mold, and the main body portion includes a second internal space formed between the third pulp mold and the fourth pulp mold, and an insulating material for thermal insulation is disposed in the first internal space formed between the first pulp mold and the second pulp mold of the cover portion and the second internal space formed between the third pulp mold and the fourth pulp mold of the main body portion.

[0019] The second pulp mold further includes a fixed coupling part formed by extending in the opposite direction of the first pulp mold from the second pulp mold so that the lower end of the cover part is coupled to the inside of the main body part; and the fourth pulp mold may further include an anti-jamming part formed on the outside to prevent the packages from getting stuck together when the pulp mold packages are stacked.

[0020] The first to fourth pulp molds may each include a pulp material comprising cellulose fibers; a binder for increasing strength by imparting elasticity and adhesiveness to the pulp material; an antifoaming agent for removing bubbles from the pulp material; and a water-repellent agent for preventing water from being absorbed into the pulp material.

[0021] The first pulp mold and the second pulp mold of the cover portion and the third pulp mold and the fourth pulp mold of the main body portion can each be bonded and joined by an adhesive.

[0022] The pH of the binder may be 2.8 to 4.8, the melting point and freezing point of the binder may be 0°C, the initial boiling point of the binder may be 90°C, the boiling point range of the binder may be 90 to 100°C, and the specific gravity of the binder may be 1.10 to 1.20.

[0023] The pH of the above defoaming agent is 5 to 7, the melting point and freezing point of the above defoaming agent are 0°C, the initial boiling point of the above defoaming agent is 90°C, the boiling point range of the above defoaming agent is 90 to 100°C, and the specific gravity of the above defoaming agent may be 1.00 to 1.10.

[0024] The pH of the water repellent is 2.8 to 3.8, the melting point and freezing point of the water repellent are 0°C, the initial boiling point of the water repellent is 90°C, the boiling point range of the water repellent is 90 to 100°C, and the specific gravity of the water repellent may be 1.00 to 1.01. Effects of the invention

[0026] According to the present invention, a pulp mold packaging can be provided comprising: a main body portion including an internal space for storing a product; and a cover portion disposed on the upper part of the main body portion and coupled thereto; wherein the cover portion includes a first pulp mold disposed on the upper part and a second pulp mold disposed on the lower part, the main body portion includes a third pulp mold disposed on the upper part and a fourth pulp mold disposed on the lower part, the cover portion includes a first internal space formed between the first pulp mold and the second pulp mold, the main body portion includes a second internal space formed between the third pulp mold and the fourth pulp mold, and an insulating material for thermal insulation is disposed in the first internal space formed between the first pulp mold and the second pulp mold of the cover portion and the second internal space formed between the third pulp mold and the fourth pulp mold of the main body portion. Brief explanation of the drawing

[0028] FIG. 1 is a drawing showing a pulp mold packaging according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of a pulp mold packaging according to an embodiment of the present invention. Specific details for implementing the invention

[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein.

[0031] It should be noted that the drawings are schematic and not drawn to scale. The relative dimensions and proportions of parts in the drawings are exaggerated or reduced in size for clarity and convenience, and any dimensions are illustrative only and not limiting. Additionally, the same reference numerals are used to denote similar features for the same structure, element, or part appearing in two or more drawings.

[0033] The embodiments of the present invention specifically illustrate ideal embodiments of the present invention. As a result, various variations of the illustration are expected. Accordingly, the embodiments are not limited to the specific form of the illustrated area and include, for example, variations in form resulting from manufacturing.

[0035] FIG. 1 is a drawing showing a pulp mold packaging according to an embodiment of the present invention.

[0036] FIG. 2 is a cross-sectional view of a pulp mold packaging according to an embodiment of the present invention.

[0038] A pulp mold packaging according to one embodiment of the present invention includes a main body portion having an internal space for storing a product and a cover portion disposed on the upper part of the main body portion and coupled thereto. The present invention is a packaging package that is lightweight, has excellent structural strength, and excellent thermal insulation effect, intended for delivering fresh products, and the interior of the main body portion can store fresh products and, if necessary, can also contain a cooling agent such as an ice pack.

[0040] It is preferable that the pulp molds constituting the cover portion and the main body portion basically have a double structure. Specifically, the cover portion includes a first pulp mold positioned at the top and a second pulp mold positioned at the bottom, and the main body portion includes a third pulp mold positioned at the top and a fourth pulp mold positioned at the bottom. Since such a double-structured pulp mold can further enhance structural stability, it can prevent damage to the packaging box.

[0042] To enhance the thermal insulation effect, the cover portion includes a first internal space formed between the first pulp mold and the second pulp mold, and the main body portion includes a second internal space formed between the third pulp mold and the fourth pulp mold.

[0044] To enhance the thermal insulation performance of the packaging, it is desirable to add an insulating material to the first internal space and the second internal space formed between the first pulp mold and the second pulp mold, and between the third pulp mold and the fourth pulp mold, respectively. The added insulating material is placed in the internal space of the double-structured pulp mold to block heat transfer, thereby efficiently enhancing the thermal insulation performance.

[0046] The insulation material may include any one of vacuum insulation, urethane insulation, or glass wool insulation, and may be made of a single sheet forming a rectangle and folded to form a cuboid with an open top surface. The material of the insulation material may be any of the various insulation materials that can be fused inside the outer shell material described later, but is not limited thereto.

[0047] The insulation material can be filled in the space between a pair of fitted outer shell materials, and the outer shell material may use an inner bag formed from glass wool as a breathable film material and have a laminated structure of a surface protection layer, a metal barrier layer, and an adhesive layer.

[0048] At this time, the outer covering material is not limited thereto, as it may also have other structures capable of performing an insulating function from the outside. The insulating material may be a vacuum insulating material that can be utilized in building materials requiring high-performance insulation and heat blocking effects, or in other everyday items for heat retention or cooling. In this case, the outer covering material of the vacuum insulating material may use a material in which a metal layer is coated on a substrate film as the outermost layer structure.

[0050] The first and second pulp molds of the cover portion and the third and fourth pulp molds of the main body portion are each bonded and joined by an adhesive. When manufacturing a pulp mold composed of a double structure using an injection molding method, it is difficult to achieve a constant strength due to the characteristics of the injection molding method, which extracts the material in a single step. Therefore, in the present invention, instead of being composed of a single pulp mold, two pulp molds are bonded together with an adhesive in both the main body portion and the cover portion to maintain high strength. Insulating material is placed in the first internal space between the first and second pulp molds and the second internal space between the third and fourth pulp molds, and each pulp mold is bonded together with an adhesive.

[0052] A structure bonded by adhesive in this way is necessary to accommodate additional insulation. This is because the internal space cannot be filled with insulation when manufactured using the injection molding method.

[0054] It is preferable that the fourth pulp mold further include an anti-jamming portion formed on the outer side to prevent the packages from getting stuck together when the pulp mold packages are stacked.

[0056] As shown in FIG. 2, the cover portion includes a fixed coupling portion formed by the second pulp mold protruding in the opposite direction of the first pulp mold in order to be coupled to the inner side of the main body portion. All existing packaging boxes had a structure in which the cover portion wrapped around and fixed the corner portion of the main body portion at the outermost part. However, this structure had the problem that the same production line could not be used because it differed from the method of manufacturing EPS (Expanded Polystyrene) used for shipping fresh products. To solve this, a structure was completed in which the cover portion is coupled to the inner surface of the main body portion through a fixed coupling portion as shown in FIG. 2, rather than a structure in which the cover portion wraps around the outer edge of the main body portion.

[0058] The present invention includes an anti-slip portion formed at the upper center of a first pulp mold to prevent the pulp mold packaging from sliding when stacked. When the upper packaging rests on the anti-slip portion of the lower packaging, it does not slide even when stacked, allowing it to be stored without tipping over sideways.

[0060] The present invention includes an anti-jamming portion formed on the corner of a fourth pulp mold to prevent the pulp mold packaging from jamming together when the packaging is stacked. The pulp mold packaging may be stacked with the cover portion attached, but to reduce volume, only the main body portion may be stacked with the cover portion detached. In this case, if the upper packaging is attached to the lower packaging, a vacuum is formed between them, making it difficult to separate the packaging. Therefore, to solve this problem, an anti-jamming portion is formed to facilitate storage and separation.

[0062] In the present invention, grooves are formed on the outer surface of the first to fourth pulp molds to prevent warping of the pulp molds. Since pulp molds are basically manufactured using cellulose fibers as raw materials, warping may occur due to moisture and external impacts due to their material properties. In the present invention, grooves are formed to prevent such warping in advance. At this time, it is preferable that the grooves formed in all of the first to fourth pulp molds protrude from the outside in the direction of the first internal space and the second internal space.

[0064] That is, as shown in FIGS. 1 and 2, the first and second pulp molds have grooves formed that protrude toward the direction of the first internal space, and the third and fourth pulp molds have grooves formed that protrude toward the direction of the second internal space. This is an advantageous structure because, due to the direction of these grooves, it can also perform the role of fixing the insulation material placed in the first internal space and the second internal space.

[0066] The first pulp mold, the second pulp mold, the third pulp mold, and the fourth pulp mold constituting the cover portion and the main body portion are all preferably made of a thickness of 1 to 4 mm, and most preferably all made of a thickness of 2 mm.

[0068] The first to fourth pulp molds of the pulp mold packaging according to the present invention may each comprise: a pulp material comprising cellulose fibers; a binder for increasing strength by imparting elasticity and adhesiveness to the pulp material; an antifoaming agent for removing bubbles from the pulp material; and a water-repellent agent for preventing water from being absorbed into the pulp material.

[0070] The above binder comprises an adipic acid polymer and water, and the weight ratio of water in the binder may be 79 to 81%, the pH of the binder may be 2.8 to 4.8, the melting point and freezing point of the binder may be 0°C, the initial boiling point of the binder may be 90°C, the boiling point range of the binder may be 90 to 100°C, and the specific gravity of the binder may be 1.10 to 1.20.

[0072] The above defoaming agent comprises octadecanol, hexadecanol, stearic acid, and water, and the weight ratio of water in the defoaming agent may be 70 to 72%, the pH of the defoaming agent is 5 to 7, the melting point and freezing point of the defoaming agent are 0°C, the initial boiling point of the defoaming agent is 90°C, the boiling point range of the defoaming agent is 90 to 100°C, and the specific gravity of the defoaming agent may be 1.00 to 1.10.

[0074] The water-repellent agent comprises an alkyl ketene dimer, water, and an emulsifying stabilizer, wherein the weight ratio of the water may be 79 to 81%, the pH of the water-repellent agent is 2.8 to 3.8, the melting point and freezing point of the water-repellent agent are 0°C, the initial boiling point of the water-repellent agent is 90°C, the boiling point range of the water-repellent agent is 90 to 100°C, and the specific gravity of the water-repellent agent may be 1.00 to 1.01.

[0076] The first to fourth pulp molds are made of eco-friendly materials using cellulose fibers, so they have the advantage of being easy to recycle even when discarded after their reuse period has expired.

[0078] Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without changing its technical concept or essential features.

[0080] Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting, and the scope of the invention is defined by the claims set forth below, and all modifications or variations derived from the meaning and scope of the claims and equivalents thereof should be interpreted as being included within the scope of the invention. Explanation of the symbols

[0082] 10 : Cover part 11: First interior space 20 : 1st pulp mold 30 : 2nd pulp mold 31: Fixed coupling part 40 : Main body 41 : Second interior space 50 : 3rd pulp mold 60 : 4th pulp mold 61: Pinch prevention part 90 : Yohombu 100 : Pulp mold packaging

Claims

Claim 1 A main body part including an internal space for storing products; and a cover portion disposed on and coupled to the upper part of the main body portion; wherein the cover portion includes a first pulp mold disposed on the upper part and a second pulp mold disposed on the lower part, the main body portion includes a third pulp mold disposed on the upper part and a fourth pulp mold disposed on the lower part, the cover portion includes a first internal space formed between the first pulp mold and the second pulp mold, the main body portion includes a second internal space formed between the third pulp mold and the fourth pulp mold, and an insulating material for thermal insulation is disposed in the first internal space formed between the first pulp mold and the second pulp mold of the cover portion and the second internal space formed between the third pulp mold and the fourth pulp mold of the main body portion, and the first to fourth pulp molds each include a pulp material comprising cellulose fibers, a binder for increasing strength by imparting elasticity and adhesiveness to the pulp material, an antifoaming agent for removing bubbles of the pulp material, and the It includes a water-repellent agent to prevent water from being absorbed into the pulp material, and the second pulp mold further includes a fixed coupling part formed by extending from the second pulp mold in the opposite direction of the first pulp mold so that the lower end of the cover part is coupled to the inside of the main body part; and the fourth pulp mold further includes an anti-jamming part formed on the outside to prevent the packages from getting stuck together when the pulp mold packages are stacked; the first pulp mold and the second pulp mold of the cover part and the third pulp mold and the fourth pulp mold of the main body part are each bonded by adhesive, the pH of the binder is 2.8 to 4.8, the melting point and freezing point of the binder are 0°C, the initial boiling point of the binder is 90°C, the boiling point range of the binder is 90 to 100°C, and the specific gravity of the binder is 1.10 to 1.20, the pH of the defoaming agent is 5 to 7, the melting point and freezing point of the defoaming agent are 0°C, the initial boiling point of the defoaming agent is 90°C, the boiling point range of the defoaming agent is 90 to 100°C, the specific gravity of the defoaming agent is 1.00 to 1.10, the pH of the water repellent is 2.8 to 3.8, the melting point and freezing point of the water repellent are 0°C, the initial boiling point of the water repellent is 90°C, the boiling point range of the water repellent is 90 to 100°C, the specific gravity of the water repellent is 1.00 to 1.01, the insulation material comprises at least one of a rectangular vacuum insulation material, a urethane insulation material, or a glass wool insulation material, and in order to prevent slipping when the pulp mold packaging is stacked, the top of the first pulp mold A pulp mold packaging characterized by including an anti-slip portion formed in the center, and in order to prevent warping of the first to fourth pulp molds, a groove portion is formed on the outer side of each of the first to fourth pulp molds, and the groove portion is formed to protrude from the outside of the first to fourth pulp molds in the direction of the internal space, and the first pulp mold, second pulp mold, third pulp mold, and fourth pulp mold constituting the cover portion and the main body portion all having a thickness of 2 mm. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 delete Claim 7 delete

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