Moisture-proof structure of PVC packaged soft capsules

Abstract

This utility model discloses a moisture-proof structure for soft capsules in PVC packaging, including a PVC outer shell, a blister pack at the upper end of the PVC outer shell, a base plate at the lower end of the PVC outer shell, protective components on the PVC outer shell to prevent moisture absorption of the medicine, a composite edge seal around the base plate, and a moisture-proof board on the upper surface of the base plate. This utility model achieves multi-level hierarchical control of the humidity inside the soft capsule packaging through a liner layer composed of a hydrophobic and breathable membrane and a moisture-absorbing material layer, a composite edge seal structure with an elastic sealing strip, and a double sealing system formed by an aluminum foil layer and a sealing ring, combined with the secondary moisture absorption function of the moisture-proof board. It effectively blocks the intrusion of external moisture, and also has good sealing performance and environmental adaptability. It can automatically compensate for the sealing gap under temperature change conditions, preventing the capsule from swelling, clumping, or becoming ineffective due to moisture absorption, and significantly improving the storage stability and packaging safety of soft capsules in high temperature and high humidity environments.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and in particular to a moisture-proof structure for soft capsules in PVC packaging. Background Technology

[0002] PVC soft capsules are a widely used packaging form in the pharmaceutical and health product industry. Due to their good transparency and mechanical strength, they are often used as the basic packaging material for soft capsules.

[0003] Currently available PVC-packaged soft capsules have poor moisture-proof performance and are unable to effectively resist the effects of changes in external humidity. When the ambient humidity is high, the soft capsules easily absorb moisture from the air, causing the capsule shell to soften, stick together, and even the contents to deteriorate, seriously affecting the quality and shelf life of the medicine. In addition, the sealing of traditional packaging structures relies on a single heat-sealing edge, which is prone to problems such as seal failure and moisture penetration under long-term storage or temperature fluctuations. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as poor moisture-proof performance, difficulty in effectively resisting the effects of changes in external humidity, and the tendency of soft capsules to absorb moisture from the air when the ambient humidity is high, leading to softening, adhesion, and even deterioration of the contents, seriously affecting the quality and shelf life of the medicine. Furthermore, the sealing of traditional packaging structures relies on a single heat-sealing edge, which is prone to seal failure and moisture penetration under long-term storage or temperature fluctuations. Therefore, this invention proposes a moisture-proof structure for soft capsules in PVC packaging.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A moisture-proof structure for soft capsules in PVC packaging includes: a PVC outer shell, a blister pack at the upper end of the PVC outer shell, a base plate at the lower end of the PVC outer shell, a protective component on the PVC outer shell to prevent moisture from affecting the medicine, a composite edge seal around the base plate, and a moisture-proof board on the upper surface of the base plate.

[0007] As a preferred embodiment of the moisture-proof structure of the soft capsule in PVC packaging according to the present invention, the protective component includes an inner lining layer disposed on the inner wall of the blister, an aluminum foil layer disposed on the bottom plate, a sealing ring added between the aluminum foil layer and the blister opening, and a moisture-guiding groove provided on the PVC outer shell.

[0008] As a preferred embodiment of the moisture-proof structure of the soft capsule for PVC packaging described in this utility model, the composite sealing edge is a multi-layer folded structure, the composite sealing edge includes an inwardly extending first folded edge and an outwardly folded second folded edge, and the space between the two folded edges is filled with an elastic sealing strip.

[0009] As a preferred embodiment of the soft capsule moisture-proof structure of PVC packaging described in this utility model, the PVC outer shell contains multiple independent compartments, which are used in conjunction with a moisture-proof board, and the top of each independent compartment has breathable micropores.

[0010] As a preferred embodiment of the moisture-proof structure of the soft capsule for PVC packaging described in this utility model, the inner layer of the inner lining is a hydrophobic and breathable membrane, and the outer layer is a moisture-absorbing material layer.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] By employing an inner lining composed of a hydrophobic and breathable membrane and a moisture-absorbing material layer, a composite edge-sealing structure with an elastic sealing strip, and a dual-sealing system formed by an aluminum foil layer and a sealing ring, combined with the secondary moisture-absorbing function of the moisture-proof board, multi-level and graded control of the humidity inside the soft capsule packaging is achieved. This effectively blocks the intrusion of external moisture and also has good sealing performance and environmental adaptability. It can automatically compensate for the sealing gap under temperature change conditions, preventing the capsules from swelling, clumping, or becoming ineffective due to moisture absorption. This significantly improves the storage stability and packaging safety of soft capsules in high-temperature and high-humidity environments. Attached Figure Description

[0013] Figure 1 This is a perspective view of a moisture-proof structure for a soft capsule in PVC packaging according to the present invention.

[0014] Figure 2 This is a schematic diagram of the internal structure of a moisture-proof soft capsule structure for PVC packaging proposed in this utility model.

[0015] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0016] Figure 4 This is a schematic diagram of the base plate structure of a moisture-proof structure for a soft capsule in PVC packaging proposed in this utility model.

[0017] In the diagram: 101, PVC outer shell; 102, blister pack; 103, base plate; 104, protective components; 1041, inner lining; 1042, sealing ring; 1043, aluminum foil layer; 1044, moisture-wicking groove; 105, composite edge sealing; 106, moisture-proof board. Detailed Implementation

[0018] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] Reference Figures 1-4 A moisture-proof structure for soft capsules in PVC packaging includes a PVC outer shell 101, a blister pack 102 at the upper end of the PVC outer shell, a base plate 103 at the lower end of the PVC outer shell 101, a protective component 104 on the PVC outer shell 101 to prevent moisture from affecting the medicine, a composite edge seal 105 around the base plate 103, the composite edge seal 105 having a multi-layer folded structure, the composite edge seal 105 including an inwardly extending first fold and an outwardly folded second fold, with an elastic sealing strip filling between the two folds, a moisture-proof board 106 on the upper surface of the base plate 103, and multiple independent compartments inside the PVC outer shell 101, the independent compartments being used in conjunction with the moisture-proof board 106, with breathable micropores at the top of the independent compartments.

[0021] Based on this, other structures also need to be disclosed in detail, such as

[0022] Please see Figures 2 to 4 Considering that soft capsules are prone to moisture absorption and expansion or clumping due to changes in environmental humidity, a protective component 104 is also included, including an inner liner 1041 disposed on the inner wall of the blister 102, an aluminum foil layer 1043 disposed on the bottom plate 103, a sealing ring 1042 added between the aluminum foil layer 1043 and the opening of the blister 102, a moisture-guiding groove 1044 opened on the PVC outer shell 101, and the inner layer of the inner liner 1041 is a hydrophobic and breathable membrane, and the outer layer is a moisture-absorbing material layer.

[0023] In summary, the working principle of this solution is as follows:

[0024] Considering that traditional soft capsule packaging is prone to moisture absorption, expansion, or clumping due to changes in environmental humidity, a multi-layered protective structure is needed to achieve layered humidity management. The inner liner 1041 adopts a composite structure of a hydrophobic and breathable membrane and a moisture-absorbing material layer. The hydrophobic and breathable membrane blocks external moisture from entering the blister 102. The composite sealing edge 105 includes a first fold and a second fold, with an elastic sealing strip filling the space between the two folds. The elastic sealing strip automatically compresses or rebounds when the temperature changes, compensating for the gaps in the folds and maintaining long-term sealing. At the same time, the aluminum foil layer 1043 and the sealing ring 1042 at the opening of the blister 102 form a double seal. The sealing ring adapts to the slight deformation of the blister 102 through elastic deformation, ensuring that there are no gaps in the sealing contact surface. Meanwhile, the moisture-proof board can provide secondary protection for the capsule to prevent it from getting damp.

[0025] It is worth noting that the entire device is controlled by a controller. Since the controller is a common device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0026] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the protection scope of this utility model. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," or "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

Claims

1. A moisture resistant structure for PVC encapsulated soft gelatin capsules comprising: A PVC outer shell (101) is provided with a blister (102) at the upper end and a base plate (103) at the lower end of the PVC outer shell (101). The PVC outer shell (101) is characterized by having a protective component (104) on it to prevent the medicine from getting damp, a composite edge seal (105) around the base plate (103), and a moisture-proof board (106) on the upper surface of the base plate (103).

2. A moisture resistant structure for PVC packaged soft capsules according to claim 1, characterized in that: The protective component (104) includes an inner lining layer (1041) disposed on the inner wall of the blister (102), an aluminum foil layer (1043) disposed on the base plate (103), a sealing ring (1042) added between the aluminum foil layer (1043) and the opening of the blister (102), and a moisture-guiding groove (1044) opened on the PVC outer shell (101).

3. A moisture resistant structure for PVC packaged soft capsules as claimed in claim 1, wherein: The composite edge sealing (105) is a multi-layer folded structure. The composite edge sealing (105) includes an inwardly extending first folded edge and an outwardly folded second folded edge, with an elastic sealing strip filling the space between the two folded edges.

4. A moisture resistant structure for PVC packaged soft capsules as claimed in claim 1, wherein: The PVC outer shell (101) has multiple independent compartments inside, which are used in conjunction with the moisture-proof board (106). The top of each independent compartment has a breathable micropore.

5. A moisture resistant structure for PVC packaged soft capsules as claimed in claim 2, wherein: The inner lining layer (1041) has a hydrophobic and breathable membrane as the inner layer and a moisture-absorbing material layer as the outer layer.

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