Damp-proof packaging bag

Abstract

The utility model belongs to the technical field of packaging materials, and particularly relates to a moisture-proof packaging bag which is characterized in that one end of the packaging bag is provided with a sealing part, and an inner layer is arranged in the packaging bag and is made of food-grade PE (polyethylene) or EVA (ethylene-vinyl acetate) materials; the surface layer is arranged on the outer surface of the packaging bag and is a polyester film; and the middle layer is arranged between the inner layer and the surface layer and is made of a silica gel-based composite nano-particle material and the like. The inner layer made of food-grade PE or EVA materials, the surface layer made of the polyester film and the middle layer made of the silica gel-based composite nanoparticles are adopted, so that the moisture-proof performance of the packaging bag is improved, and the safety and dryness of packaged articles are ensured; the real-time monitoring function of the humidity sensor provides accurate information about the humidity of the environment where the packaged article is located for a user, and moisture-proof measures can be taken in time; due to the automatic reset sealing design of the elastic piece, the use of a user is facilitated, the sealing performance of the through hole can be quickly recovered after the humidity sensor is pulled out, moisture invasion is effectively prevented, and the moisture-proof performance of the packaging bag is kept.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging materials, and particularly relates to a moisture-proof packaging bag. Background Art

[0002] With the advancement of science and technology and the improvement of people's living standards, the requirements for packaging materials are getting higher and higher. Especially for some products that are sensitive to humidity, such as food and medicine, moisture-proof packaging is particularly important; currently, most moisture-proof packaging bags on the market are made of a single material or a simple composite material, with limited moisture-proof effect, and it is impossible to monitor the humidity inside the packaging bag in real time. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a moisture-proof packaging bag with excellent moisture-proof performance and a real-time humidity monitoring function.

[0005] (II) Technical solution

[0006] The utility model is realized by the following technical scheme: the utility model proposes a moisture-proof packaging bag, one end of which is provided with a sealing portion.

[0007] include:

[0008] The inner layer is arranged inside the packaging bag and is made of food-grade PE or EVA material;

[0009] The surface layer is arranged on the outer surface of the packaging bag and is a polyester film;

[0010] The middle layer, located between the inner layer and the surface layer, is made of silica-based composite nanoparticle material;

[0011] A humidity sensor is arranged in the middle of the packaging bag and is used to monitor the humidity inside the packaging bag in real time;

[0012] Wherein, a through hole is opened in the middle of the packaging bag, penetrating the inner layer, the middle layer and the surface layer, and can be used for inserting and matching the humidity sensor;

[0013] The inner layer surface is hinged with an elastic sheet for covering the through hole;

[0014] The end of the elastic sheet hinged to the inner layer is provided with a second magnetic block, and the inner layer is embedded with a first magnetic block which is opposite to the second magnetic block and is magnetically connected to the second magnetic block.

[0015] Furthermore, a lifting opening is provided at the sealing portion.

[0016] Furthermore, the elastic sheet is also provided with a breathing hole.

[0017] Furthermore, the inner layer, the middle layer and the surface layer are compounded by a hot pressing process.

[0018] Furthermore, the inner layer has a thickness of 0.02-0.05 mm.

[0019] Furthermore, the surface layer has a thickness of 0.01-0.03 mm.

[0020] Furthermore, the thickness of the middle layer is 0.03-0.08 mm.

[0021] (III) Beneficial effects

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The utility model adopts an inner layer of food-grade PE or EVA material, a surface layer of polyester film and a middle layer of silica gel-based composite nanoparticles, which improves the moisture-proof performance of the packaging bag and ensures the safety and dryness of the packaged items; the real-time monitoring function of the humidity sensor provides users with accurate information about the humidity of the environment in which the packaged items are located, which helps to take moisture-proof measures in time; the automatic reset sealing design of the elastic sheet is not only convenient for users to use, but also can quickly restore the sealing of the through hole after the humidity sensor is pulled out, effectively preventing moisture from invading and maintaining the moisture-proof performance of the packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0026] Figure 2 It is a side view cutaway structural schematic diagram of the utility model.

[0027] The markings in the accompanying drawings are: 1-sealing part, 2-inner layer, 3-middle layer, 4-surface layer, 5-elastic sheet, 51-breathing hole, 6-first magnetic block, 7-second magnetic block, 8-through hole, 9-humidity sensor, 10-lifting mouth. DETAILED DESCRIPTION

[0028] In this technical solution:

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] Reference Figure 1-2 As shown, the utility model provides a moisture-proof packaging bag, one end of which is provided with a sealing portion.

[0031] include:

[0032] The inner layer is arranged inside the packaging bag and is made of food-grade PE or EVA material;

[0033] The surface layer is arranged on the outer surface of the packaging bag and is a polyester film;

[0034] The middle layer, located between the inner layer and the surface layer, is made of silica-based composite nanoparticle material;

[0035] A humidity sensor is arranged in the middle of the packaging bag and is used to monitor the humidity inside the packaging bag in real time;

[0036] Wherein, a through hole is opened in the middle of the packaging bag, penetrating the inner layer, the middle layer and the surface layer, and can be used for inserting and matching the humidity sensor;

[0037] The inner layer surface is hinged with an elastic sheet for covering the through hole;

[0038] The elastic sheet is hinged to the end of the inner layer and is provided with a second magnetic block, and the inner layer is embedded with a first magnetic block which is opposite to the second magnetic block and is magnetically connected to the second magnetic block;

[0039] Among them, the sealing part is provided with a lifting opening; The sealing part is provided with a lifting opening, which is convenient for users to carry and carry;

[0040] The elastic sheet is also provided with a breathing hole, which is used to balance the air pressure inside and outside the packaging bag to avoid the packaging bag from rupturing or deforming due to the difference in air pressure.

[0041] The inner layer, middle layer and surface layer are compounded by hot pressing process to ensure the close combination of each layer and improve the overall moisture-proof performance of the packaging bag.

[0042] Among them, the thickness of the inner layer is 0.02-0.05 mm;

[0043] Among them, the surface thickness is 0.01-0.03 mm;

[0044] Among them, the thickness of the middle layer is 0.03-0.08 mm.

[0045] Silica gel-based composite nanoparticle material is made by evenly dispersing nanoparticles in a silica gel matrix. Through a specific preparation process, the two are tightly combined to form a composite material with excellent performance. Silica gel-based composite nanoparticle material has the stability and mechanical properties of silica gel, and also gives nanoparticles special functions. It has the characteristics of high specific surface area, strong surface activity and quantum size effect.

[0046] Working principle:

[0047] The packaging bag adopts a multi-layer composite structure, which consists of an inner layer, a middle layer and a surface layer. The inner layer is made of food-grade PE or EVA material to ensure that the inner surface of the packaging bag is safe and non-toxic, and is suitable for items that come into direct contact with food. The surface layer is made of polyester film, which has excellent moisture-proof and humidity-proof properties and can effectively block the invasion of external moisture. The middle layer is made of silica gel-based composite nanoparticle material. Through the close combination of nanoparticles and silica gel matrix, it inherits the stability and mechanical properties of silica gel, and at the same time gives the nanoparticles special functions, thereby significantly improving the moisture-proof performance of the packaging bag;

[0048] In the middle of the packaging bag, there is a through hole that penetrates all layers. Due to the insertion of the humidity sensor, the humidity sensor can monitor the humidity inside the packaging bag in real time and provide users with accurate information about the humidity of the environment in which the packaged items are located;

[0049] In order to maintain the sealing of the through hole, an elastic sheet is hinged on the surface of the inner layer to cover the through hole. The elastic sheet is connected to the inner layer by a hinge. This design enables the elastic sheet to be flexibly bent or deformed under the action of external force. At the same time, a second magnetic block is provided at the hinged end of the elastic sheet, and a first magnetic block is embedded in the inner layer, which is opposite to the second magnetic block and magnetically connected to the second magnetic block. When the humidity sensor is inserted or removed, the elastic sheet can be deformed under the action of external force, thereby allowing the sensor to be inserted or removed. When the external force disappears, due to the flexibility and elasticity of the elastic sheet and the magnetic attraction of the first and second magnetic blocks, the elastic sheet can automatically reset to the top of the through hole and cover the through hole again.

[0050] As the elastic sheet is reset, the first magnetic block and the second magnetic block attract each other again, ensuring that the elastic sheet fits tightly on the through hole to form an effective seal. This sealing mechanism can effectively prevent moisture or other foreign substances from entering the packaging bag through the through hole, thereby maintaining the moisture-proof performance of the packaging bag.

[0051] Finally, the inner layer, middle layer and surface layer are laminated by hot pressing process to ensure the close combination of each layer. This composite structure not only improves the overall moisture-proof performance of the packaging bag, but also enhances its durability and reusability.

[0052] In summary, the packaging bag realizes effective monitoring of the internal humidity of the packaging bag and efficient moisture-proofing through the multi-layer composite structure, real-time monitoring of the humidity sensor and the automatic reset sealing design of the elastic sheet. The packaging bag is convenient for users to use and improves its flexibility and reusability, providing a reliable packaging solution for food, medicine and other items with strict requirements on moisture-proofing.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0057] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A moisture-proof packaging bag, wherein one end of the packaging bag is provided with a sealing portion (1), characterized in that: include: The inner layer (2) is arranged inside the packaging bag and is made of food-grade PE or EVA material; A surface layer (4), which is disposed on the outer surface of the packaging bag and is a polyester film; The middle layer (3) is arranged between the inner layer (2) and the surface layer (4) and is made of a silica-based composite nanoparticle material; A humidity sensor is arranged in the middle of the packaging bag and is used to monitor the humidity inside the packaging bag in real time; The packaging bag has a through hole (8) in the middle portion thereof which penetrates the inner layer (2), the middle layer (3) and the surface layer (4) and is capable of being inserted and matched with a humidity sensor. An elastic sheet (5) for covering the through hole (8) is hingedly connected to the surface of the inner layer (2); The elastic sheet (5) is hingedly connected to the end of the inner layer (2) and is provided with a second magnetic block (7), and the inner layer (2) is embedded with a first magnetic block (6) which is opposite to the second magnetic block (7) and is magnetically connected to it.

2. A moisture-proof packaging bag according to claim 1, characterized in that: The sealing portion (1) is provided with a lifting opening (10).

3. A moisture-proof packaging bag according to claim 1, characterized in that: The elastic sheet (5) is also provided with a breathing hole (51).

4. A moisture-proof packaging bag according to claim 1, characterized in that: The inner layer (2), the middle layer (3) and the surface layer (4) are compounded by a hot pressing process.

5. The moisture-proof packaging bag according to claim 1, characterized in that: The thickness of the inner layer (2) is 0.02-0.05 mm.

6. A moisture-proof packaging bag according to claim 1, characterized in that: The thickness of the surface layer (4) is 0.01-0.03 mm.

7. A moisture-proof packaging bag according to claim 1, characterized in that: The thickness of the middle layer (3) is 0.03-0.08 mm.

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