Container sealing material having opening tab

Abstract

Disclosed is a container sealing material which can be easily opened by a user with little force and maintains sealing performance and structural stability. A container sealing material according to an embodiment may include: a first layer, of which a part of one surface is attached to a container to seal an opening of the container; and a second layer attached to the other surface of the first layer, wherein the second layer includes an attachment area attached to the first layer and a non-attachment area not attached thereto.

Description

Container sealant with an opening tab

[0001] The present invention relates to a technology for manufacturing container sealing materials, specifically a container sealing material that can be easily opened by a user with minimal force while maintaining sealing performance and structural stability.

[0002] Conventional container seals were designed to allow users to pull the seal to separate it from the container upon opening, but these have caused numerous problems due to structural limitations. When the handle was designed to be small, it frequently required excessive force from the user or resulted in the seal being damaged, preventing normal opening. In particular, designs intended to tightly seal the seal against the container made it difficult for users to remove, while also imposing limitations on increasing the sealing strength beyond a certain level.

[0003] A structure in which the handle is located in the center had aesthetic limitations due to the membrane layer being exposed on the outside, and also had the problem of limiting the utilization of the printing area. On the other hand, a structure in which the force causing the seal to peel off from the container opening surface upon opening is distributed in both directions of the seal opening is inefficient because a large amount of force is required to remove the seal, and this design caused users to be unable to properly open the seal or to damage part of the seal. Consequently, conventional container seals required various improvements in terms of ease of use, structural stability, and production efficiency.

[0004] The purpose is to provide a container sealing material that allows the user to open it easily with minimal force while maintaining sealing performance and structural stability.

[0005] According to one aspect, the container sealant comprises a first layer having a portion of one side attached to the container to seal the opening of the container; and a second layer attached to the other side of the first layer, wherein the second layer may consist of an attached area attached to the first layer and an unattached area not attached.

[0006] Container sealing materials can have various shapes, such as circular, oval, or polygonal, and are not limited to a specific shape.

[0007] The unattached area of ​​the second layer can be coated with UV silicone resin.

[0008] Some of the unattached areas of the second layer may include partially attached areas that are not coated with UV silicone resin and are attached to the first layer.

[0009] The second layer may include a cutting line formed inward from a specific point on the edge of the second layer and a cutting guide line formed from the end point of the cutting line.

[0010] The cutting line may include a first cutting line formed in a straight or curved shape from the outermost outer line of the second layer toward the center or inward.

[0011] The cutting line is connected to the endpoint of the first cutting line, and the first cutting line and 90 o ~ 150 o It may include a second cutting line formed by.

[0012] The cutting line is connected to the endpoint of the first cutting line, and the first cutting line and 135 o It may include a second cutting line formed by.

[0013] The cutting line is connected to the end point of the second cutting line and may include a third cutting line formed in the same direction as the direction formed by the first cutting line and the second cutting line.

[0014] The cutting guide line may include a first cutting guide line formed in an unattached area and a second cutting guide line formed in an attached area.

[0015] The first cutting guide line is connected to the end point of the third cutting line and can be formed as a curve that bends in the opposite direction to the direction formed by the second cutting line and the third cutting line.

[0016] The second cutting guide line is connected to the end point of the first cutting guide line and can be formed as a curve that bends in the same direction as the first cutting guide line.

[0017] The second cutting guide line may start at the end point of the first cutting guide line and end at a point located at a predetermined distance from the first cutting line.

[0018] The distance between the second cutting guide line and the second layer edge closest to the second cutting guide line can be reduced from the starting point to a predetermined point, and can be reduced from the predetermined point to the end point.

[0019] The distance between the second cutting guide line and the second layer edge closest to the second cutting guide line decreases from the starting point to the first point, the distance is maintained from the first point to the second point, and may increase from the second point to the end point.

[0020] The first layer can be composed of aluminum with a thickness of 15 to 50 μm.

[0021] The first layer may include a sealing layer for attachment to a container.

[0022] The second layer may include a printing layer composed of at least one of PET (Polyethylene Terephthalate), BOPP (Biaxially Oriented Polypropylene), polyolefin film, nylon film, and synthetic paper, and a rigid film layer composed of at least one of polyester film, HDPE film (High-Density Polyethylene Film), CPP film (Cast Polypropylene Film), and nylon film.

[0023] The second layer may further include a foamed layer composed of a foamed olefin resin film or sheet formed by foaming a polyolefin-based resin.

[0024] The sealing layer may include a straight or V-shaped laser marker to induce cutting of the sealing layer.

[0025] In the case of a straight laser marker, one end is connected to the starting point, and in the case of a V-shaped marker, the corner of the V can be connected to the starting point.

[0026] The present invention provides a container seal that optimizes the direction of force application and the structure of the seal, allowing the user to easily remove the container seal with minimal force, and eliminates the scrap removal process, thereby improving ease of use and ease of manufacturing. Additionally, the membrane layer is not exposed from the outside, which enhances aesthetics. Furthermore, the upper layer of the membrane is composed of a second layer, which is a multilayer backing layer containing elastic polyolefin foam. This improves adhesion when the cap is fastened to the container, thereby providing the effect of reliably increasing sealing strength while maintaining structural stability and reliability.

[0027] FIG. 1 is a diagram showing the structure of a container sealing material according to one embodiment.

[0028] FIGS. 2 and FIGS. 3 are illustrative diagrams for explaining a second layer according to one embodiment.

[0029] FIG. 4 is a diagram showing the structure of each layer of a container sealing material according to one embodiment.

[0030] FIG. 5 is an illustrative diagram for explaining the configuration of a laser marker according to one embodiment.

[0031] FIG. 6 is an exemplary diagram illustrating the configuration of a laser marker and an unattached area according to one embodiment.

[0032] Hereinafter, an embodiment of the present invention will be described in detail with reference to the attached drawings. In describing the present invention, specific descriptions of related known functions or configurations will be omitted if it is determined that such detailed descriptions may unnecessarily obscure the essence of the present invention. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intentions or conventions of the user or operator. Therefore, their definitions should be based on the content throughout this specification.

[0033] Hereinafter, embodiments of container sealing materials will be described in detail with reference to the drawings.

[0034] FIG. 1 is a diagram showing the structure of a container sealing material according to one embodiment.

[0035] According to one embodiment, the container sealing material (100) may include a first layer (110) in which a portion of the lower surface is attached to the container to seal the opening of the container, and a second layer (120) attached to the upper surface of the first layer (110).

[0036] For example, the container sealing material (100) is used to seal the container and is configured to allow easy opening with less force when removing it by controlling the direction of force application. In particular, it is aesthetically superior by ensuring that the membrane layer, which is the first layer, is not visible from the outside, and has design advantages that allow for a large printing area to be utilized.

[0037] According to one embodiment, the second layer may be composed of an attachment area that is attached to the first layer and an unattached area that is not attached.

[0038] Referring to FIG. 2, the attachment area (111) is firmly bonded to the first layer. When a user attempts to open the container, the attachment area applies a pulling force toward the first layer in the upward direction of the second layer, causing the first layer to break in the second cutting guide line area, and the first layer and the second layer together peel off along the third guide cutting line toward the container opening surface.

[0039] The unattached area (112) remains unattached to the first and second layers and serves as a handle that the user can easily grasp. The unattached area is a key part for initiating seal removal, allowing force to be transmitted to the second layer for seal removal when the user pulls it with their hand. When the user pulls the unattached area, the attachment area of ​​the second layer begins to move together with the first layer, and in this process, the attachment area can gradually release the connection between the first layer and the container. As a result, the container seal (110) can be completely separated from the container in a single continuous motion. This allows for maintaining a strong seal while minimizing the force required to remove the container seal (100).

[0040] According to one embodiment, the non-bonded area of ​​the second layer may be coated with UV silicone resin. UV silicone resin is a polymer material that hardens rapidly through ultraviolet light and can impart specific physical or chemical properties to the surface. When UV silicone resin is coated on the non-bonded area of ​​the second layer, this area does not adhere to the first layer.

[0041] When UV silicone resin is coated on an unbonded area, adhesion with the first layer does not occur due to the release properties of the cured surface of the resin. This is because the adhesive cannot sufficiently bond to the resin-coated area due to the inert surface, or low surface energy, which is a key characteristic of UV silicone resin. Since the adsorption and bonding of the adhesive are limited on the cured surface of the resin, adhesion between the first layer and the second layer does not occur, and the area may remain unbonded.

[0042] UV silicone resin coating can improve the durability of the unbonded area. The resin coating layer is resistant to physical damage or abrasion, allowing the sealant to maintain its opening tab function without damage when a user pulls the area with a handle. In other words, the UV silicone resin coating prevents bonding with the adhesive in the unbonded area while simultaneously enhancing its durability.

[0043] According to one embodiment, some of the unattached areas of the second layer may include a partial attachment area (112-1) that is not coated with UV silicone resin and is attached to the first layer. The partial attachment area is configured to maintain the stability of the unattached area and to ensure that the sealant operates smoothly.

[0044] The unbonded area is not bonded to the first layer and operates as a handle; however, because this area is not completely fixed, problems may occur where it slides or folds depending on the movement of the lid when turning it. Such problems can degrade the structural consistency of the sealant, thereby affecting the function and reliability of the sealant. To prevent this, a portion of the unbonded area may be partially bonded to the first layer in the form of multiple dots, lines, or combs.

[0045] Referring to FIG. 2(a), an embodiment is shown in which the partial attachment area (112-1) is formed in a straight line shape, and FIG. 2(b) shows an embodiment in which the partial attachment area (112-1) is formed in a dot shape.

[0046] The partial attachment area (112-1) is in a state where the UV silicone resin coating treatment is omitted, and the adhesive can effectively bond with the first layer to fix the non-attached area. This prevents the non-attached area from folding or deforming when the lid is turned or operated, thereby allowing the container sealant to maintain consistent functionality and ease of use. In other words, the partial attachment area maintains a balance between the non-attached area and the attachment area, and while the non-attached area maintains its function as a handle, it can prevent instability caused by the rotation of the lid or external forces.

[0047] According to one embodiment, the second layer may include a cutting line formed inward from a specific point on the edge of the second layer and a cutting guide line formed from the end point of the cutting line. Referring to FIG. 2, the second layer (120) may include cutting lines (113-1 to 113-3) and cutting guide lines (114-1, 114-2). This structure facilitates the opening of the sealant and can increase user convenience.

[0048] The cutting line is a line formed inward starting from the edge of the second layer, providing an initial point of breakage when removing the sealant. The cutting line is typically formed using a sealing knife and is designed to be a relatively low-strength line that can be easily cut by the user. This line allows the user to break the sealant with the minimum force required to remove it while maintaining the sealing power of the container.

[0049] The cutting guide line is a line extending inward from the end point of the cutting line, serving to guide the cutting direction of the sealant. The cutting guide line is configured so that when a user opens the sealant, the breakage starting from the cutting line naturally extends in the desired direction. For example, the cutting guide line is created as a dotted line, similar to a perforation line, using a needle cut method, which is designed to facilitate easy breakage when the user performs the opening operation.

[0050] According to one embodiment, the cutting line may include a first cutting line (113-1) formed in a straight or curved shape from the outermost outer line of the second layer toward the center or inward. The first cutting line (113-1) is formed from a specific point of the second layer (110), and in particular, the first cutting line (113-1) may be formed at an angle (a1) of 75° to 105° with a tangent passing through a specific point of the edge of the second layer. This configuration provides an optimal cutting direction to facilitate the opening of the sealant.

[0051] The first cutting line (113-1) enters inward from the edge of the second layer and maintains an angle (a1) with the tangent at 75° to 105°, thereby enabling proper force transmission and breakage induction when the user pulls the handle (113-1). This angle range is configured to support a natural opening motion without damaging the physical structure of the sealant.

[0052] Specifically, the first cutting line (113-1) serves as a starting point when the user opens the sealant and is formed at an optimized angle so that the cutting direction is not excessively steep or gentle. This design takes into account both the durability of the second layer and user convenience, allowing the cutting line to proceed accurately in the desired direction when the user applies force.

[0053] According to one embodiment, the cutting line is connected to the end point of the first cutting line (113-1), and the first cutting line and 90 o ~ 150 o It may include a second cutting line (113-2) formed by. Preferably, the cutting line is connected to the end point of the first cutting line, and the first cutting line and 135 o It may include a second cutting line formed by.

[0054] The second cutting line can be connected to the end point of the first cutting line. In particular, the second cutting line (113-2) can be formed at an angle (a2) of 90° to 150° with the first cutting line. This angle design enables natural cutting induction during the sealant opening process and can maximize user convenience.

[0055] The reason the angle (a2) between the first cutting line and the second cutting line is set to 90° to 150° is to ensure that the change in the cutting direction is smooth and efficient. If the angle narrows to less than 90°, the cutting path may bend abruptly, causing damage to the cut area or requiring the user to apply greater force when opening. Conversely, if the angle exceeds 150°, the cutting guidance may not be clear, potentially reducing the efficiency of opening the seal. Therefore, the angle range of 90° to 150° is the optimal angle designed to allow the user to perform the opening operation smoothly while maintaining a balance between the strength of the cutting line and the cutting guidance. More specifically, the cutting line is connected to the end point of the first cutting line, and the first cutting line and 135 o It may include a second cutting line formed by.

[0056] The first cutting line (113-1) and the second cutting line (113-2) can be connected in two ways. The first method is a curved connection, which makes the change in cutting direction smooth, allowing the user to open the seal with minimal force. This method is suitable for maximizing ease of use. The second method is a straight connection, which has the advantage of a simple structure and easy manufacturing process. The straight connection maintains stability as the cutting path is clear and may be preferred depending on specific design and manufacturing requirements.

[0057] According to one embodiment, the cutting line may include a third cutting line (113-3) that is connected to the end point of the second cutting line (113-2) and is formed in the same direction as the first cutting line (113-1) and the second cutting line (113-2). The third cutting line (113-3) is connected to the end point of the second cutting line and may be formed in the same direction as the first cutting line and the second cutting line, and this provides a structural feature to maintain the directionality of the force applied by the user during the cutting process so that the sealant can be easily opened.

[0058] The third cutting line (113-3) allows force to be transmitted continuously when the user pulls the seal. The first and second cutting lines are responsible for the initial direction change and guidance of the cutting, and the third cutting line is formed in the same direction by inheriting this directionality, thereby ensuring the continuity of the cutting. As a result, the user can naturally perform the action of tearing the seal without interruption, and the seal can be opened accurately and efficiently while minimizing force.

[0059] According to one embodiment, the cutting guide line may include a first cutting guide line (114-1) formed in an unattached area and a second cutting guide line (114-2) formed in an attached area. This structure maintains the directionality and stability of the cutting during the opening process of the sealant and can prevent problems that may occur during use.

[0060] The first cutting guide line (114-1) is formed in the non-attached area and plays an important role in maintaining the structural stability of the sealant. Since the non-attached area is prone to deformation during actions such as a user pulling the handle or rotating the lid, the first cutting guide line can absorb the stress generated during this process and act as a primary resistance. This prevents the first layer from being unnecessarily torn or damaged.

[0061] The second cutting guide line (114-2) is formed in the attachment area and plays a primary role in guiding the opening of the seal. The second cutting guide line can control the cutting direction so that the opening process proceeds clearly in the bonded state between the attached first layer and the second layer. When a user pulls the handle, cutting occurs sequentially along the structure of the cutting guide line, and the seal can be naturally separated from the container. The second cutting guide line can control the direction of stress occurring particularly in the attachment area, allowing the seal to be properly opened without excessive force. That is, the first cutting guide line prevents abnormal damage caused by deformation and stress during use, and the second cutting guide line provides directionality of cutting during the opening process, thereby supporting the efficient and stable opening of the seal.

[0062] According to one embodiment, the first cutting guide line is connected to the end point of the third cutting line and can be formed as a curve that bends in the opposite direction to the direction formed by the second cutting line and the third cutting line. This allows the direction of force to be naturally transmitted along the edge during the process of the user opening the sealant, thereby enabling the first layer to be smoothly separated from the container.

[0063] The reason the first cutting guide line (114-1) is curved is to ensure that the force is transmitted consistently along the guided path when opening the seal. If the cutting guide line is straight or formed in the wrong direction, the force exerted by the user pulling the handle is not transmitted uniformly to the first layer, which may result in abnormal damage to the handle or seal or require excessive force. However, by designing the first cutting guide line to be curved in the opposite direction to the second and third cutting lines, the force transmission path naturally follows the edge of the container, and the separation of the seal can be achieved smoothly.

[0064] In particular, the curve of the first cutting guide line smooths the change in the direction of force, thereby minimizing unnecessary resistance during the opening process. As a result, the sealant separates from the container without excessive stress, and the user can efficiently remove the sealant with minimal force. Additionally, this curved design prevents structural damage to the first layer and maintains the durability of the sealant.

[0065] According to one embodiment, the second cutting guide line is connected to the end point of the first cutting guide line and can be formed as a curve that bends in the same direction as the first cutting guide line. This allows the force to be transmitted uniformly and stably along the edge when the seal is opened, thereby enabling the seal to be efficiently separated from the container.

[0066] The second cutting guide line (114-2) is connected to the first cutting guide line and can be gently bent in the same direction to form a circular shape with a predetermined distance from the edge of the container. This structure is designed so that force is stably transmitted from the starting point of the attachment area to the opposite end, allowing the sealant and the container to be naturally released. In particular, the direction of the curve and the structural arrangement along the edge optimize the force transmission path, allowing the user to easily remove the container sealant with minimal force.

[0067] According to one embodiment, the second cutting guide line may have the end point of the first cutting guide line as the starting point and a point at a predetermined distance from the first cutting line as the ending point. Referring to FIG. 3, the second cutting guide line may have the end point of the first cutting guide line as the starting point (p1) and a point at a predetermined distance from the first cutting line as the ending point (p4). The curved shape of the second cutting guide line can maintain continuity in the cutting direction while preventing abnormal breakage or dispersion of force that may occur during the process of opening the sealant. As the force is smoothly transmitted along the cutting guide line, the entire attachment area is efficiently separated, and the adhesive force between the sealant and the container can be stably released. That is, the second cutting guide line (114-2) is designed in a curved shape that is connected to the end point of the first cutting guide line and bends in the same direction, thereby allowing the force to be stably transmitted from the starting point of the attachment area to the opposite end.

[0068] According to one embodiment, the distance between the second cutting guide line and the second layer edge closest to the second cutting guide line may decrease from a starting point to a predetermined point, and may decrease from a predetermined point to an end point. Referring to FIG. 3, the distance between the second cutting guide line (114-2) and the second layer edge closest to the second cutting guide line in the container seal (100) may be configured to decrease from a starting point (p1) to a predetermined point (p2), and decrease from a predetermined point (p2) to an end point (p4). That is, the distance (d2) at the predetermined point (p2) may be shorter than the distance (d1) at the starting point (p1), and the distance (d3) at the end point (p4) may be longer than the distance (d2) at the predetermined point (p2). This serves to help the user easily remove the seal by appropriately controlling the concentration and dispersion of force during the seal opening process.

[0069] The reason the distance from the starting point (p1) to a predetermined point (p2) is narrowed is to concentrate the force when opening the seal. When the force is concentrated, the cutting of the second cutting guide line becomes easier when the user pulls the handle, and the initial separation of the first layer can begin stably. In particular, as the distance narrows, the force is concentrated near the edge of the second layer, so the initial breaking process can be carried out efficiently and quickly.

[0070] The reason the distance from a predetermined point (p2) to an end point (p4) gradually increases is to induce the cut sealant to be separated from the container as a whole. As the distance increases, the force is widely distributed and effectively acts on the remaining attachment area of ​​the sealant. As a result, the overall separation of the sealant occurs naturally, and the force is evenly distributed across the attachment area, allowing the sealant to be easily removed.

[0071] This allows for stepwise control of force concentration and dispersion during the seal opening process, thereby enabling the user to easily separate the seal from the container with minimal force. Specifically, the concentration of force at the starting point (p1) facilitates initial cutting, and as the force is dispersed toward the end point (p4), the seal can be completely removed from the container.

[0072] According to one embodiment, the distance between the second cutting guide line and the second layer edge closest to the second cutting guide line is reduced from the starting point to the first point, the distance is maintained from the first point to the second point, and the distance can be increased from the second point to the end point. In FIG. 3, the distance between the second cutting guide line (114-2) and the second layer edge closest to the second cutting guide line is reduced from the starting point (p1) to the first point (p2), the distance is maintained from the first point (p2) to the second point (p3), and the distance can be increased from the second point (p3) to the end point (p4). This design can concentrate the force during the initial cutting, maintain stability during the intermediate process, and disperse the force at the end to efficiently remove the sealant from the container.

[0073] According to one embodiment, the first layer may be composed of aluminum with a thickness of 15 to 50 μm. The aluminum layer is lightweight and thin, yet provides high strength and durability, thereby simultaneously satisfying the sealing performance and protective function of the sealant. In particular, the thickness of 15 to 50 μm is an optimized thickness range that allows the user to easily remove the sealant while maintaining the sealing power of the container, and is a configuration that considers both the functionality and ease of use of the product.

[0074] According to one embodiment, the first layer (410) may include a sealing layer for attachment to a container. Referring to FIG. 4, the sealing layer (412) may be configured to form a strong bond between the container and the first layer (411) to provide protection and sealing effects for the contents, and to allow the user to easily open it when necessary.

[0075] For example, the sealing layer (412) may be composed of an olefin film, a PET film, or a structure in which an olefin film and a PET film are laminated.

[0076] Olefin film exhibits excellent chemical resistance and sealing properties, forming a strong bond with the container. It leaves minimal residue even after opening, allowing for clean removal. Furthermore, its superior flexibility enables application to a wide variety of containers, and it possesses characteristics suitable for heat sealing.

[0077] PET film provides high strength and heat resistance, enhancing the durability of sealants and protecting contents from the external environment. When PET film is used alone or laminated with olefin film, the structural stability of the sealing layer is strengthened, and specific physical requirements can be met.

[0078] The laminated structure of olefin film and PET film combines the advantages of each film to simultaneously ensure sealing power, heat resistance, and durability. While the olefin film forms a strong seal with the container, the PET film enhances the strength of the sealant to provide appropriate tensile resistance upon opening, allowing for adjustable openability as needed.

[0079] The edge of the sealing layer is the area that comes into direct contact with the bottle opening. This section is bonded to the bottle by applying heat (heat sealing), which prevents the intrusion of external air or foreign substances and safely protects the contents. Additionally, opening resistance can be optimized by adjusting the sealing strength, and various heat sealing methods can be applied depending on the container material and the characteristics of the sealing layer.

[0080] According to one embodiment, the second layer (420) may include a printing layer composed of at least one of PET (Polyethylene Terephthalate), BOPP (Biaxially Oriented Polypropylene), polyolefin film, nylon film, and synthetic paper, and may include at least one of a rigid film layer composed of at least one of a polyester film, HDPE film (High-Density Polyethylene Film), CPP film (Cast Polypropylene Film), and nylon film.

[0081] Referring to FIG. 4, the second layer (420) may be composed of at least one of a printing layer (421) and a rigid film layer (423). The printing layer (421) may be composed of at least one of PET (Polyethylene Terephthalate), BOPP (Biaxially Oriented Polypropylene), polyolefin film, nylon film, and synthetic paper. PET provides high transparency and durability and is suitable for conveying product information and visual design due to its excellent print quality. BOPP is widely used in packaging materials due to its excellent flexibility and moisture resistance, as well as its high print stability. Synthetic paper allows for printing like paper while possessing excellent water resistance and durability, making it resistant to physical damage.

[0082] The rigid film layer (423) may be composed of at least one of a polyester film, a high-density polyethylene film (HDPE), a cast polypropylene film (CPP), and a nylon film. The polyester film has excellent heat resistance and tensile strength, providing physical stability to the sealant. The HDPE film has excellent strength and chemical resistance due to its high density, allowing it to withstand external impacts or damage. The CPP film has excellent thermoplasticity and durability, helping the sealant to possess both flexibility and stability. The nylon film has excellent oxygen barrier properties, which can maintain the freshness of the contents and enhance the rigidity and durability of the sealant.

[0083] According to one embodiment, the second layer may further include a foam layer composed of a foamed olefin resin film or sheet formed by foaming a polyolefin-based resin. The second layer (420) may further include a foam layer (422) composed of a foamed olefin resin film or sheet formed by foaming a polyolefin-based resin. The foam layer (422) is located between the printed layer (421) and the rigid film layer (423) of the second layer and serves to improve the structural stability and functionality of the sealant.

[0084] The foam layer (422) is a porous structure formed by foaming a polyolefin resin, which is effective for lightweighting and shock absorption. The fine pore structure formed during the foaming process lowers the density of the layer and increases flexibility, thereby making the sealant lighter and easier to use.

[0085] For example, the second layer (420) may not include a foam layer, in which case the overall thickness of the sealant can be reduced. By removing the foam layer, the sealant can be manufactured with a thinner and simpler structure, which reduces production costs by decreasing material usage along with weight reduction. Additionally, due to the reduced thickness, the sealant becomes more flexible, allowing it to be designed to be more suitable for specific container shapes or usage environments. This enables the implementation of various sealants by determining whether or not to include a foam layer depending on the application and purpose.

[0086] FIG. 5 is an illustrative diagram for explaining the configuration of a laser marker according to one embodiment.

[0087] For example, a laser mark is a process of creating a scratch on a specific layer so that it can be easily torn at a desired location. For example, a sealing layer may include a straight or V-shaped laser marker to induce cutting of the sealing layer. Referring to FIG. 5, the laser marker (115) may be configured in a straight shape. In this case, the laser marker (115) may have a zigzag shape and be configured in a straight shape.

[0088] For example, when the thickness of the sealing layer is 30 to 50 μm, the groove depth of the laser marker can be 10 to 30 μm.

[0089] For example, the laser marker acts as a factor controlling the strength and ease of opening of the sealing layer, and its thickness may vary depending on the toughness (tensile strength) of the sealing layer. For example, if the thickness of the container seal is 1T (mm) and the sealing layer has a moderate tensile strength, the thickness of the laser marker is formed in the range of 10 to 15 μm to ensure appropriate openability. In addition, if the tensile strength of the sealing layer is high and it does not tear easily, the thickness of the laser marker can be increased to the range of 20 to 30 μm to allow for smooth cutting.

[0090] According to one embodiment, if the laser marker is straight, one end is connected to the starting point (p1), and if it is V-shaped, the corner of the V can be connected to the starting point (p1). That is, the laser marker is connected to the starting point (p1) where the breakage begins, thereby improving the ease of opening for the user.

[0091] FIG. 6 is an exemplary diagram illustrating the configuration of a laser marker and an unattached area according to one embodiment.

[0092] Referring to FIG. 6(a), as described above, an unattached area (112) may be located between the first layer (610) and the second layer (620). As another example, as shown in FIG. 6(b), the unattached area (112) may be located between the first layer (610) and the sealing layer (630).

[0093] The unattached area (112) maintains a state where the first layer (610) and the sealing layer (630) are not attached and can serve as a handle that the user can easily grasp. The unattached area (112) is an important part for initiating seal removal, and when the user pulls it with their hand, force for seal removal can be transmitted to the sealing layer (630). When the user pulls the unattached area, the attachment area of ​​the first layer begins to move together with the sealing layer (630), and the container seal (110) can be completely separated from the container in a single continuous motion. Furthermore, since the sealing layer (630) includes a laser marker (115), the container seal can be separated by tearing together the first and second layers at the starting point (p1) where the breakage begins.

[0094] For example, the container seal (100) can be embossed. Embossing is a processing method that forms a certain pattern, such as a grid shape with intaglio and relief, on the surface, and can control the physical properties of the seal. This improves the openability of the seal and allows the user to remove the seal more easily.

[0095] The embossed areas have uneven surface thickness and form fine undulations. Due to these structural changes, when physical force is applied, stress concentrates on specific areas, causing the seal to tear easily. This is similar to the principle where certain parts of paper tear first when crumpled, and it functions to facilitate the easy tearing of the container seal. In other words, the embossing process acts as a key factor in improving the openability of the container seal, allowing users to easily open the container with minimal force.

[0096] The present invention has been described above focusing on its preferred embodiments. Those skilled in the art will understand that the present invention may be implemented in modified forms without departing from the essential characteristics of the invention. Accordingly, the scope of the present invention should not be limited to the aforementioned embodiments but should be interpreted to include various embodiments within the scope equivalent to those described in the claims.

[0097] The present invention can be used in the field of container sealing materials.

Claims

1. Regarding container sealing materials, A first layer having a portion of one side attached to the container to seal the opening of the container; and It includes a second layer attached to the other surface of the first layer, and A container sealant comprising a second layer, the second layer being composed of an attachment area attached to the first layer and a non-attachment area not attached.

2. In Paragraph 1, The unattached area of ​​the second layer above is a container sealant coated with UV silicone resin.

3. In Paragraph 2, A container sealant comprising a portion of the unattached area of ​​the second layer that is not coated with UV silicone resin and includes a partial attachment area that is attached to the first layer.

4. In Paragraph 1, The above second layer A container sealant comprising a cutting line formed inward from a specific point on the edge of the second layer and a cutting guide line formed from the end point of the cutting line.

5. In Paragraph 4, The above cutting line is A container sealing material comprising a first cutting line formed in a straight or curved shape from the outermost outer line of the second layer toward the center or inward direction.

6. In Paragraph 5, The above cutting line is It is connected to the endpoint of the first cutting line, and 90 with the first cutting line o ~ 150 o A container sealant comprising a second cutting line formed by 7. In Paragraph 6, The above cutting line is A container sealing material comprising a third cutting line connected to the end point of the second cutting line and formed in the same direction as the direction formed by the first cutting line and the second cutting line, or in a reduced shape of the outermost form.

8. In Paragraph 4, The above cutting guide line is A container sealant comprising a first cutting guide line formed in an unattached area and a second cutting guide line formed in an attached area.

9. In Paragraph 1, The above second layer A printing layer composed of at least one of PET (Polyethylene Terephthalate), BOPP (Biaxially Oriented Polypropylene), polyolefin film, nylon film, and synthetic paper, and A container sealing material comprising a rigid film layer composed of at least one of a polyester film, a high-density polyethylene film (HDPE film), a cast polypropylene film (CPP film), and a nylon film.

10. In Paragraph 9, The above second layer A container sealing material further comprising a foamed layer composed of a foamed olefin resin film or sheet formed by foaming a polyolefin-based resin.

11. In Paragraph 1, The above-mentioned first layer It includes a sealing layer for attachment to the above container, and The above sealing layer A container sealant comprising a straight or V-shaped laser marker for inducing cutting of the sealing layer.

12. In Paragraph 11, The above laser marker is In the case of a straight type, one end is connected to the starting point, and A container sealant in which, in the case of a V-shape, the corners of the V are connected to the starting point.

13. In Paragraph 1 The above first layer It includes a sealing layer for attachment to the above container, and The above sealing layer It includes an embossed structure for easy cutting of the sealant, The above embossing structure is in the form of a grid-like pattern or a worm-like curve formed by intaglio and relief on the surface of the sealing layer, a container sealing material.

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