Waterproof and moistureproof packaging bag

Abstract

The utility model discloses a waterproof and moistureproof packing bag, including the bag body, the top fixed connection sealing buckle strip of bag body, the top surface symmetry fixed two handle of bag body, be equipped with the support plate in the bag body, the dry piece is inlayed and is equipped in the support plate, the outside fixed embedding first transparent membrane and second transparent membrane of bag body, the inside of first transparent membrane and second transparent membrane all are coated with pigment layer, the pigment layer of second transparent membrane inside and dry piece mutually adhere, the outside embedding exhaust member of bag body. The utility model discloses through being provided with first transparent membrane and second transparent membrane with pigment layer, has realized to inside dry piece hygroscopic state's visualization, nondestructive monitoring, and user need not open packing bag, only needs to observe the color change of external transparent membrane to judge whether the desiccant is invalid, thoroughly avoided the risk that the moisture invades because of the frequent opening and closing inspection, has greatly promoted the reliability and convenience of packing.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag technology, and in particular to a waterproof and moisture-proof packaging bag. Background Technology

[0002] Patent publication number CN221478123U discloses a composite packaging bag with moisture-proof and mildew-proof properties. The bag includes a main body, an internal drying component, and an inner partition. The inner partition is located on the inner side wall of the main body, and multiple ventilation holes are provided on its side wall. A moisture-proof pad is located at the inner bottom of the main body, and a support component is located at the outer bottom. A one-way valve is located on the outer side wall of the main body, communicating with the interior of the main body. A sealing strip is located at the top of the main body. By incorporating the main body, drying component, and moisture-proof pad, the waterproof and moisture-proof performance of the main body is improved, as well as its oil resistance, transparency, and stiffness. It can dry the interior of the main body while allowing the desiccant to be stored separately from the medicine to prevent accidental ingestion. The desiccant is easy to replace, improving practicality.

[0003] However, when testing the usage time of the desiccant in this patent, it is necessary to frequently open the packaging bag to remove the desiccant for monitoring. When the packaging bag is opened frequently, moisture can easily enter the packaging bag. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a waterproof and moisture-proof packaging bag.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a waterproof and moisture-proof packaging bag, comprising a bag body, a sealing strip fixedly connected to the top of the bag body, two handles symmetrically fixed to the top surface of the bag body, a support plate provided inside the bag body, a drying sheet embedded in the support plate, a first transparent film and a second transparent film fixedly embedded on the outside of the bag body, both the inner sides of the first transparent film and the second transparent film being coated with a pigment layer, the pigment layer on the inner side of the second transparent film being adhered to the drying sheet, and an exhaust vent embedded on the outside of the bag body.

[0006] The exhaust component includes an externally threaded tube fixedly embedded on the outside of the bag body, an annular block fixedly connected inside the externally threaded tube, a sealing sheet slidably connected outside the annular block, and a sealing cap threadedly connected outside the externally threaded tube.

[0007] The inner side of the support plate has a groove, the drying sheet is placed in the groove, and the inner wall of the groove has multiple equally spaced holes.

[0008] Both the first transparent film and the second transparent film are PU films, and the pigment layer consists of multiple microcapsules filled with a color developer.

[0009] The bag body includes a sponge layer, with a first waterproof layer on the inner side of the sponge layer and a second waterproof layer on the outer side. Both the first and second waterproof layers are aluminum-plated films.

[0010] Two blind holes are symmetrically opened on the outside of the annular block. A guide rod is slidably connected in the blind hole. The guide rod is fixedly connected to the sealing plate. Two sliding grooves are symmetrically opened on the inner wall of the blind hole. A slider is slidably connected in the sliding groove. The slider is fixedly connected to the guide rod. A spring is fixed between the inner wall of the sliding groove and the slider.

[0011] The end of the sealing cap abuts against the second sealing ring, which is fixedly sleeved on the outer edge of the external threaded tube and fixed to the outside of the bag body. The inner wall of the bag body is fixedly connected to the first sealing ring, which is fixedly sleeved on the outer edge of the external threaded tube.

[0012] This utility model has the following beneficial effects:

[0013] 1. By setting up a first transparent film and a second transparent film with a pigment layer, the moisture absorption status of the internal desiccant sheet can be visualized and monitored non-destructively. Users do not need to open the packaging bag; they only need to observe the color change of the outer transparent film to determine whether the desiccant has failed. This completely avoids the risk of moisture intrusion caused by frequent opening and closing for inspection, and greatly improves the reliability and convenience of the packaging.

[0014] 2. Through innovative exhaust device design, the air inside the packaging bag is discharged. The air extraction device is connected to the external threaded tube on the outside of the bag. The air extraction device extracts the air from the bag, realizing vacuum packaging of the items inside the bag. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 This is a side sectional view of the overall structure of this utility model;

[0017] Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0018] Figure 4 For the present utility model Figure 2 Enlarged view of the structure at point B;

[0019] Figure 5 For the present utility model Figure 3 Enlarged view of the structure at point C;

[0020] Figure 6 This is a cross-sectional view of the overall structure of the bag body of this utility model.

[0021] Legend: 1. Handle; 2. Sealing strip; 3. Bag body; 30. First waterproof layer; 31. Sponge layer; 32. Second waterproof layer; 4. Sealing cap; 5. First transparent film; 6. Second transparent film; 7. First sealing ring; 8. External threaded tube; 9. Ring block; 10. Second sealing ring; 11. Sealing sheet; 12. Pigment layer; 13. Support plate; 14. Leakage hole; 15. Drying sheet; 16. Groove; 17. Blind hole; 18. Slide groove; 19. Spring; 20. Slider; 21. Guide rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figures 1 to 6 This waterproof and moisture-proof packaging bag includes a bag body 3, which includes a sponge layer 31. The inner side of the sponge layer 31 is provided with a first waterproof layer 30, and the outer side is provided with a second waterproof layer 32. Both the first waterproof layer 30 and the second waterproof layer 32 are aluminum-plated films. A sealing buckle 2 is fixedly connected to the top of the bag body 3. Two handles 1 are symmetrically fixed to the top surface of the bag body 3. A support plate 13 is provided inside the bag body 3. A drying sheet 15 is embedded in the support plate 13. A groove 16 is opened on the inner side of the support plate 13. The drying sheet 15 is placed in the groove 16. Multiple equally spaced drainage holes 14 penetrate the inner wall of the groove 16. A first transparent film 5 and a second transparent film 6 are fixedly embedded on the outer side of the bag body 3. The inner sides of the first transparent film 5 and the second transparent film 6 are coated with a pigment layer 12. Both the first transparent film 5 and the second transparent film 6 are PU films, and the pigment layer 12 consists of multiple microcapsules filled with color developer. The pigment layer 12 on the inner side of the second transparent film 6 is adhered to the drying sheet 15. An exhaust device is embedded on the outer side of the bag body 3.

[0024] The venting device includes an externally threaded tube 8 fixedly embedded on the outside of the bag body 3. An annular block 9 is fixedly connected inside the externally threaded tube 8. A sealing sheet 11 is slidably connected to the outside of the annular block 9. A sealing cap 4 is threadedly connected to the outside of the externally threaded tube 8. Two blind holes 17 are symmetrically opened on the outside of the annular block 9. A guide rod 21 is slidably connected inside the blind holes 17. The guide rod 21 is fixedly connected to the sealing sheet 11. Two sliding grooves 18 are symmetrically opened on the inner wall of the blind holes 17. A slider 20 is slidably connected inside the sliding grooves 18. The slider 20 is fixedly connected to the guide rod 21. A spring 19 is fixedly fixed between the inner wall of the sliding grooves 18 and the slider 20. The end of the sealing cap 4 abuts against a second sealing ring 10. The second sealing ring 10 is fixedly sleeved on the outer edge of the externally threaded tube 8 and fixed to the outside of the bag body 3. A first sealing ring 7 is fixedly connected to the inner wall of the bag body 3. The first sealing ring 7 is fixedly sleeved on the outer edge of the externally threaded tube 8. The first sealing ring 7 and the second sealing ring 10 ensure the static sealing at the connection between the venting device and the bag body 3, preventing air leakage from this point.

[0025] Working principle: As the desiccant sheet 15 continuously absorbs moisture, its internal moisture absorption effect reaches its limit. Excess moisture then absorbs the pigment layer 12 inside the second transparent film 6. The moisture penetrates into the microcapsules of the pigment layer 12 within the second transparent film 6, contacting the color developer within the microcapsules. This causes a chemical reaction between the color developer and the pigment layer 12, resulting in a color change. Users can visually determine whether the desiccant is saturated and ineffective by observing the color difference between the first transparent film 5 and the second transparent film 6. Then, the sealing strip 2 is opened, the bag 3 is opened, and the saturated desiccant sheet 15 is removed from the groove 16 within the support plate 13. A new desiccant sheet 15 is then installed into the groove 16, and the bag 3 is sealed using the sealing strip 2. When the new desiccant sheet 15 comes into contact with the pigment layer 12 inside the second transparent film 6, the color changes. After the material layer 12 is free from moisture, the color developer returns to its initial color. When it is necessary to vacuum the items inside the bag 3, remove the sealing cap 4 from the external threaded tube 8, then connect the input end of the vacuum pump to the end of the external threaded tube 8. The vacuum pump sucks out the air inside the bag 3. Under the negative pressure suction of the vacuum pump, the sealing plate 11 moves towards the outside of the external threaded tube 8, and the spring 19 is compressed, so that the external threaded tube 8 and the bag 3 are in a connected state. The air inside the bag 3 will be extracted by the vacuum pump through the external threaded tube 8. After the vacuuming is completed, turn off the vacuum pump, and the compressed spring 19 returns to its original state, so that the sealing plate 11 abuts against the annular block 9 to seal the external threaded tube 8. Then, separate the vacuum pump from the external threaded tube 8, and then connect the sealing cap 4 to the external threaded tube 8 to further seal the external threaded tube 8.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waterproof and moisture-proof packaging bag, comprising a bag body (3), characterized in that: The top of the bag body (3) is fixedly connected to a sealing buckle (2), and two handles (1) are symmetrically fixed on the top surface of the bag body (3). The bag body (3) is provided with a support plate (13), and a drying sheet (15) is embedded in the support plate (13). A first transparent film (5) and a second transparent film (6) are fixedly embedded on the outside of the bag body (3). The inner sides of the first transparent film (5) and the second transparent film (6) are coated with a pigment layer (12). The pigment layer (12) on the inner side of the second transparent film (6) is in contact with the drying sheet (15). An exhaust device is embedded on the outside of the bag body (3).

2. The waterproof and moisture-proof packaging bag according to claim 1, characterized in that: The exhaust component includes an externally threaded tube (8) fixedly embedded on the outside of the bag body (3), an annular block (9) fixedly connected inside the externally threaded tube (8), a sealing sheet (11) slidably connected outside the annular block (9), and a sealing cap (4) connected to the externally threaded tube (8).

3. The waterproof and moisture-proof packaging bag according to claim 1, characterized in that: A groove (16) is provided on the inner side of the support plate (13), and the drying sheet (15) is disposed in the groove (16). The inner wall of the groove (16) is permeated with a plurality of equally spaced holes (14).

4. The waterproof and moisture-proof packaging bag according to claim 1, characterized in that: Both the first transparent film (5) and the second transparent film (6) are PU films, and the pigment layer (12) consists of multiple microcapsules filled with color developer.

5. A waterproof and moisture-proof packaging bag according to claim 1, characterized in that: The bag body (3) includes a sponge layer (31), the inner side of which is provided with a first waterproof layer (30) and the outer side with a second waterproof layer (32). Both the first waterproof layer (30) and the second waterproof layer (32) are aluminum-plated films.

6. A waterproof and moisture-proof packaging bag according to claim 2, characterized in that: Two blind holes (17) are symmetrically opened on the outside of the annular block (9). A guide rod (21) is slidably connected in the blind hole (17). The guide rod (21) is fixedly connected to the sealing plate (11). Two sliding grooves (18) are symmetrically opened on the inner wall of the blind hole (17). A slider (20) is slidably connected in the sliding groove (18). The slider (20) is fixedly connected to the guide rod (21). A spring (19) is fixed between the inner wall of the sliding groove (18) and the slider (20).

7. A waterproof and moisture-proof packaging bag according to claim 2, characterized in that: The end of the sealing cap (4) abuts against the second sealing ring (10), the second sealing ring (10) is fixedly sleeved on the outer edge of the external threaded tube (8) and fixed on the outside of the bag body (3), the inner wall of the bag body (3) is fixedly connected to the first sealing ring (7), the first sealing ring (7) is fixedly sleeved on the outer edge of the external threaded tube (8).

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