Moisture absorption device

Abstract

The present invention provides a moisture absorption device that avoids friction and impact between the moisture absorption unit and the inner wall and permeable membrane of the container, thereby reducing the risk of container wear, damage to the permeable membrane, and sealing failures. [Solution] The solution includes a flexible shell 100 whose interior constitutes a housing cavity 110, a dehumidifying unit 200 housed in the housing cavity, a permeable membrane 120 provided on the flexible shell which allows ambient moisture to pass through the permeable membrane and enter the housing cavity, an impermeable sealing membrane 130 attached to the outside of the permeable membrane, and a flexible protective pad 300 provided on the dehumidifying unit.

Description

Technical Field

[0001] The present invention relates to the field of drying technology, and particularly to a moisture absorption device.

Background Art

[0002] In the storage and transportation processes of industrial products, electronic components, precision instruments, foods, and pharmaceuticals, in order to prevent moisture, mold growth, oxidation, or performance degradation of products caused by environmental moisture, a moisture absorption device (such as a desiccant bag, dehumidification box, dehumidification card, etc.) is usually placed inside the package. These moisture absorption devices adsorb water vapor in the environment by the internal desiccant (such as silica gel, montmorillonite, calcium chloride, etc.) to keep the inside of the package in a dry state.

[0003] In the prior art, during the processes of transportation, conveyance, and use of the moisture absorption device, when the moisture absorption unit inside the bag body shakes, presses, or impacts, it is likely to directly cause friction or impact between the inner wall of the container and the permeable membrane, and under the long-term action, wear of the container, breakage of the permeable membrane, or poor sealing are likely to occur. As a result, leakage of the desiccant and early malfunction of the function are caused, affecting the reliability and service life of the product. Therefore, the research and development of a moisture absorption device to solve the above technical problems are highly expected.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The object of the present invention is to provide a moisture absorption device that can avoid friction and impact between the moisture absorption unit and the inner wall of the container and the permeable membrane, and reduce the risks of wear of the container, breakage of the permeable membrane, and poor sealing.

Means for Solving the Problems

[0005] To achieve the above object, the present invention provides a moisture absorption device, and the specific embodiments are as follows: The moisture absorption device includes a flexible shell with an accommodation cavity formed inside, and A dehumidifying unit housed in the aforementioned housing cavity, A permeable membrane provided on the flexible shell, the permeable membrane allowing environmental moisture to pass through the permeable membrane and enter the containment cavity, An impermeable sealing film attached to the outside of the permeable film, The dehumidifying unit includes a flexible protective pad provided on the dehumidifying unit.

[0006] Compared to conventional technology, the moisture absorption device of this invention, by providing a flexible protective pad on the dehumidification unit, effectively mitigates friction, impact, and stress concentration that may occur between the flexible shell and the permeable membrane during the transportation and handling process of the dehumidification unit, thereby reducing the risk of packaging damage and malfunction, and improving the yield rate and durability of the product.

[0007] In some embodiments, the dehumidification unit is a punched-out block of calcium chloride, a mounting groove is provided at the top of the dehumidification unit, and a functional release member is provided within the mounting groove. By limiting the dehumidification unit to a die-cut, lumpy calcium chloride, a stable and efficient moisture absorption source is provided. By creating a mounting groove on the top of the lumpy dehumidification unit and arranging a functional release member, the physical integration of moisture absorption and additional functions (such as fragrance, deodorization, or insect repellent) and space reuse are achieved, and a single device can be made multifunctional without increasing the overall packaging volume.

[0008] In some embodiments, the functional release member includes a container having an opening, a paste-like or liquid functional agent is sealed inside the container, and the container is covered with a volatile film that shields the opening. The functional release component is a container-encapsulated paste or liquid functional agent, and the structure is covered with a volatile film. The volatile film exerts a physical shielding effect, preventing rapid evaporation and leakage of the functional agent. This ensures that the product stably exhibits additional effects other than dehumidification throughout its entire lifespan, enabling controllable and sustained release of the functional agent and extending its effective duration.

[0009] In some embodiments, the functional agent is one of a fragrance, a deodorant, or an insect repellent. By clearly defining the specific type of functional agent as either a fragrance, deodorizer, or insect repellent, this dehumidifying device can flexibly provide a variety of additional functions to meet different user needs, such as improving environmental fragrance, eliminating unpleasant odors, or controlling pests, thereby significantly enhancing the product's practical value and market suitability.

[0010] In some embodiments, a step is provided within the mounting groove, a locking member is provided at the bottom of the container, and the locking member is locked to the step during mixing. The structure, in which the stepped portion is locked into the locking member, allows the functional release member and the dehumidification unit to be connected using only a simple and reliable assembly method without the need for adhesives. This ensures that the functional release member does not detach or displace due to shaking or inversion during transportation and use, improving the overall stability and reliability of the product structure.

[0011] In some embodiments, the flexible shell has a compressed state and a hygroscopic state, and the flexible shell enters the compressed state by physical folding or vacuum compression, and is configured such that the spatial volume occupied by the flexible shell is smaller than the natural volume of the flexible shell in the hygroscopic state. By allowing the flexible shell to enter a compressed state through physical folding or vacuum compression, the spatial volume occupied by the flexible shell is configured to be smaller than the natural volume of the flexible shell in a hygroscopic state, directly achieving the core objective of reducing the storage and transport volume of the product and significantly reducing logistics costs. At the same time, it achieves the technical objective of blocking moisture from the impermeable sealing film during storage, ensuring the effectiveness of the product before use, effectively reducing the packaging volume itself, and lowering transport and storage costs.

[0012] In some embodiments, the top surface of the volatile film is located within the mounting groove, or the top surface of the volatile film is lower than the top surface of the flexible protective pad, forming a gap between the volatile film and the permeable film. By limiting the existence of a gap between the volatile film and the permeable film, the gap ensures that the volatile pathway and the moisture absorption pathway are independent of each other, preventing interference between the two processes of moisture absorption and functional release, and allowing for stable operation over a long period. At the same time, the gap ensures that the volatile film and the permeable film do not come into contact, preventing situations in which the functional agent comes into contact with the permeable film and corrodes it, thereby improving the service life of the permeable film.

[0013] In some embodiments, the volume of the containment cavity is at least 1 times the volume of the dehumidifying unit. By limiting the volume of the containment cavity to at least one times the volume of the dehumidification unit, sufficient physical space is ensured for the calcium chloride to change from solid to liquid and expand in volume after absorbing moisture, preventing the risk of the bag bursting due to the expansion of its contents and ensuring the safety and integrity of the product throughout the entire moisture absorption cycle.

[0014] This invention further provides a method for manufacturing the above-mentioned moisture absorption device, comprising the following steps: A flexible plastic film is laid flat on a chain plate having mold grooves. A flexible plastic film is subjected to vacuum forming under reduced pressure to create a flexible shell having a housing cavity corresponding to the shape of the mold groove. The dehumidifying unit is placed inside the housing cavity. The opening of the containment cavity is covered with a permeable membrane, and the periphery of the permeable membrane and the flexible shell is heat-sealed. An impermeable sealing film is heat-sealed to the outside of a permeable film. In some embodiments, an impermeable sealing membrane is heat-sealed to the outside of a permeable membrane while simultaneously extracting air from inside the containment cavity, causing the flexible shell to be vacuum-compressed and enter a compressed state. [Effects of the Invention]

[0015] Based on the above technical solutions, this invention has the following beneficial effects compared to the prior art: By providing a flexible protection pad on the dehumidification unit, the friction, impact, and stress concentration on the flexible shell and the permeable membrane during the transportation and conveyance process of the dehumidification unit can be effectively alleviated, the risk of packaging damage and malfunction can be reduced, and the product yield and durability can be improved.

Brief Description of the Drawings

[0016] [Figure 1] It is a schematic structural view of the present invention. [Figure 2] It is an exploded view of the present invention. [Figure 3] It is a schematic flowchart of the present invention.

Embodiments for Carrying out the Invention

[0017] To facilitate the understanding of the present invention, the specific embodiments of the present invention will be described in more detail below with reference to the attached drawings of the specification. Unless otherwise specifically described or defined, the terms "first, second..." used in this specification are only used to distinguish names and do not represent specific numbers or orders. Unless otherwise specifically described or defined, the term "and / or" used in this specification includes any and all combinations of one or more related listed items. Note that "fixed to" and "connected to" in this specification may be directly fixed or connected to one component, or may be indirectly fixed or connected to one component.

[0018] Example 1: As shown in FIGS. 1 and 2, the moisture absorption device provided by this embodiment includes a flexible shell 100. The interior of the flexible shell 100 constitutes a storage cavity 110, and a dehumidification unit 200 is accommodated in the storage cavity 110. A permeable membrane 120 is provided on the flexible shell 100, allowing environmental moisture to pass through the permeable membrane 120 and enter the storage cavity 110. An impermeable seal film 130 on the outside of the permeable membrane 120 is affixed to the flexible shell 100. The flexible shell 100 is configured such that its spatial volume becomes smaller than its natural volume under hygroscopic conditions by entering a compressed state through physical folding or vacuuming, thereby reducing its overall occupied spatial volume.

[0019] In this embodiment, the flexible shell 100 is a bag structure made of flexible plastic. In this embodiment, the impermeable sealing film 130 is an aluminum film or another impermeable plastic film. The permeable membrane 120 in this embodiment may be a polyethylene permeable membrane 120, a polytetrafluoroethylene microporous membrane, or a microporous membrane of other plastics.

[0020] By allowing the flexible shell 100 to enter a compressed state through physical folding or vacuum compression, the spatial volume occupied by the flexible shell 100 is configured to be smaller than the natural volume of the flexible shell 100 in a hygroscopic state, directly achieving the core objective of reducing the storage and transport volume of the product and significantly reducing logistics costs. At the same time, it blocks moisture from the impermeable seal film 130 during storage, ensuring the effectiveness of the product before use, effectively reducing its own packaging volume, and achieving the technical objective of reducing transport and storage costs.

[0021] In some embodiments, the dehumidifying unit 200 is a die-cut block of calcium chloride, a mounting groove 210 is provided at the top of the dehumidifying unit 200, and a functional release member 400 is provided within the mounting groove 210. By specifying that a die-cut, lumpy calcium chloride form the dehumidification unit 200, a stable and efficient moisture absorption source is provided. Furthermore, by providing a mounting groove 210 at the top of the lumpy dehumidification unit 200 and arranging a functional release member 400 therein, the physical integration of moisture absorption and additional functions (such as fragrance, deodorization, or insect repellent) and space reuse are achieved, enabling a single device to possess multifunctionality without increasing the overall packaging volume.

[0022] In some embodiments, the functional release member 400 includes a container 410 having an opening, a paste-like or liquid functional agent is sealed inside the container 410, and the container 410 is covered with a volatile film 420 that shields the opening. By making the functional release member 400 a paste or liquid functional agent sealed in a container 410 and covered with a volatile film 420, the volatile film 420 acts as a physical barrier, preventing rapid evaporation or leakage of the functional agent, ensuring that the product stably exhibits additional effects other than dehumidification throughout its entire lifespan, achieving controllable and sustained release of the functional agent, and extending its effective duration.

[0023] The volatile film 420 described in this embodiment may be any one of the following: a nonwoven fabric, filter paper, or a microporous plastic thin film (such as a microporous film of polyethylene or polypropylene), or any other film capable of achieving the volatilization of functional agents in the prior art, and is not limited to the implementation methods enumerated in this embodiment.

[0024] In some embodiments, the functional agent is one of a fragrance, a deodorant, or an insect repellent. By clearly defining the specific type of functional agent as either a fragrance, deodorizer, or insect repellent, this dehumidifying device can flexibly provide a variety of additional functions to meet different user needs, such as improving environmental fragrance, removing unpleasant odors, or controlling pests, thereby significantly improving the product's practical value and market suitability.

[0025] In some embodiments, a step is provided within the mounting groove 210, a locking member 411 is provided at the bottom of the container 410, and the locking member 411 is locked to the step during mixing. The structure, in which the stepped portion engages with the locking member 411 during assembly, allows the functional release member 400 and the dehumidifying unit 200 to be connected using a simple and reliable assembly method without the need for adhesive. This ensures that the functional release member 400 does not fall off or become displaced due to shaking or inversion during transportation and use, thereby improving the overall stability and reliability of the product structure.

[0026] In some embodiments, a flexible protective pad 300 is provided on the dehumidifying unit 200. In this embodiment, the flexible protective pad 300 is a flexible plastic pad (such as a silicone rubber pad) or another flexible pad.

[0027] In actual use, the flexible protective pad 300 can be provided on the top outer edge of the dehumidifying unit 200, or on the top or bottom outer edges, or it can partially or completely enclose the dehumidifying unit 200, thereby protecting the dehumidifying unit 200 and cushioning friction, impact, and stress concentration against the flexible shell and permeable membrane during transportation and handling. Of course, in embodiments in which the flexible protective pad 300 encloses the dehumidifying unit 200, the flexible protective pad 300 must be made of a flexible material (such as a sponge) that can absorb liquid.

[0028] In some embodiments, the top surface of the volatile film 420 is located within the mounting groove 210, or the top surface of the volatile film 420 is lower than the top surface of the flexible protective pad 300 located on top of the dehumidifying unit 200, forming a gap between the volatile film 420 and the permeable film 120.

[0029] By limiting the existence of a gap between the volatile film 420 and the permeable film 120, the gap ensures that the volatile pathway and the moisture absorption pathway are independent of each other, preventing interference between the two processes of moisture absorption and functional release, and allowing for stable operation over a long period of time. At the same time, the gap ensures that the volatile film 420 and the permeable film 120 do not come into contact, preventing the functional agent from coming into contact with the permeable film 120 and corroding it, thereby improving the service life of the permeable film 120.

[0030] In some embodiments, the volume of the containment cavity 110 is at least one times the volume of the dehumidification unit 200. By limiting the volume of the containment cavity 110 to at least one times the volume of the dehumidification unit 200, sufficient physical space is ensured for the calcium chloride to change from solid to liquid and expand in volume after absorbing moisture, preventing the risk of the bag bursting due to the expansion of its contents, and ensuring the safety and integrity of the product throughout the entire moisture absorption cycle.

[0031] In some examples, the dehumidifying unit 200 is a particulate desiccant. By limiting the dehumidification unit 200 to a particulate desiccant, an alternative embodiment of the dehumidification unit 200 is provided, which has the advantages of a large specific surface area and a fast moisture absorption rate. At the same time, this solution simplifies the structure (eliminating the need for protective pads and functional release members 400), provides a more flexible option to meet the needs of different cost and application scenarios, and expands the scope of protection of the claims.

[0032] Example 2: The method for manufacturing the moisture absorption device described in Example 1 provided by this embodiment includes the following steps: Step 1: Lay the flexible plastic film flat on the chain plate with mold grooves, Step 2: Vacuum forming is performed on the flexible plastic film to form a flexible shell 100 having a housing cavity 110 corresponding to the shape of the mold groove. Step 3: Place the dehumidifying unit 200 inside the housing cavity 110. Step 4: Cover the opening of the containment cavity 110 with the permeable membrane 120, and heat seal the periphery of the permeable membrane 120 and the flexible shell 100. Step 5: Heat-seal the impermeable sealing film 130 to the outside of the permeable film 120.

[0033] Steps 1 and 2 are specifically achieved by unfolding a roll of flexible plastic film and laying it flat on a chain plate conveyor that operates continuously. The chain plate has precisely machined mold grooves (rectangle, circle, etc.) that match the product design shape. When the flexible plastic film moves above the mold grooves, an air intake device below the mold grooves is activated, reducing the pressure and performing vacuum forming on the heated and softened plastic film. The plastic film is precisely adsorbed into the mold grooves, and after cooling, it forms a flexible shell 100 having a containment cavity 110 of a specified volume.

[0034] Step 3 is specifically achieved by placing the molded flexible shell 100 on a chain plate and moving it to the filling work position. A robotic arm or precision weighing device places a pre-prepared dehumidifying unit 200 (such as a die-cut lump of calcium chloride dehumidifying mochi or a fixed amount of particulate dehumidifying agent) into the housing cavity 110. Optionally, in this working position, the covering of the flexible protective pad 300 and the attachment of the functional release member 400 as described in Example 1 can also be completed simultaneously.

[0035] Step 4 is specifically achieved by transporting the semi-finished product, after the chain plate has completed filling the dehumidification unit 200, to the first heat sealing work position. The entire surface of the chain plate is covered with a pre-cut permeable membrane 120, completely covering the openings of all the housing cavities 110. The heat sealing machine heat-pressure seals the permeable membrane 120 and the peripheral region of the flexible shell 100. This completely encloses the dehumidification unit 200 within a sealed environment consisting of the flexible shell 100 and the permeable membrane 120, at which point the device already possesses moisture-absorbing capabilities, but its volume remains in its uncompressed, natural state.

[0036] Step 5 is specifically achieved by having the semi-finished product enter the final heat-sealing position, covering the outside of the permeable film 120 with the impermeable sealing film 130, and then heat-sealing the impermeable sealing film 130 and the flexible shell 100 using a heat-sealing machine. The system is selectively configured to heat-seal the impermeable sealing membrane 130 to the outside of the permeable membrane 120 while simultaneously extracting air from inside the containment cavity 110, causing the flexible shell 100 to be vacuum-compressed and enter a compressed state. It is also possible to enter a compressed state through a physical folding method, which is optional.

[0037] Compared to conventional technology, the moisture absorption device provided by this invention, by providing a flexible protective pad 300 on the dehumidifying unit 200, effectively mitigates friction, impact, and stress concentration that may occur between the flexible shell 100 and the permeable membrane 120 during the transportation and handling process of the dehumidifying unit 200, thereby reducing the risk of packaging damage and malfunction, and improving the yield rate and durability of the product.

[0038] Based on the disclosures and teachings of the above specification, those skilled in the art can make changes and modifications to the embodiments described above. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should be included within the scope of protection of the claims. Furthermore, some specific terms are used herein, but these terms are used for illustrative purposes only and do not limit the present invention in any way. [Explanation of Symbols]

[0039] 100 Flexible Shell 110 Containment Cavity 120 Permeable membrane 130 Impermeable sealing film 200 Dehumidification Unit 210 Mounting groove 300 Flexible Protective Pads 400 Functional discharge member 410 Container 411 Locking member 420 Volatile film

Claims

1. A moisture absorption device, A flexible shell (100) whose interior constitutes a containment cavity (110), A dehumidifying unit (200) is housed within the aforementioned housing cavity (110), A permeable membrane (120) provided on the flexible shell (100) allows ambient moisture to pass through the permeable membrane (120) and enter the containment cavity (110), An impermeable sealing film (130) is attached to the outside of the permeable film (120), A moisture absorption device characterized by including a flexible protective pad (300) provided on the dehumidifying unit (200).

2. The dehumidifying device according to claim 1, characterized in that the dehumidifying unit (200) is a die-cut block of calcium chloride, a mounting groove (210) is provided on the top of the dehumidifying unit (200), and a functional release member (400) is provided within the mounting groove (210).

3. The moisture absorption device according to claim 2, characterized in that the functional release member (400) includes a container (410) having an opening, a paste-like or liquid functional agent is sealed inside the container (410), and the container (410) is covered with a volatile film (420) that shields the opening.

4. The moisture absorption device according to claim 3, characterized in that the functional agent is one of a fragrance, a deodorant, or an insect repellent.

5. The moisture absorption device according to claim 3, characterized in that a step is provided in the mounting groove (210), a locking member (411) is provided at the bottom of the container (410), and the locking member (411) is locked to the step and mixed together.

6. The moisture absorption device according to any one of claims 1 to 5, characterized in that the flexible shell (100) has a compressed state and a moisture-absorbing state, and the flexible shell (100) enters the compressed state by physical folding or vacuum compression, and the spatial volume occupied by the flexible shell (100) is smaller than the natural volume of the flexible shell (100) in the moisture-absorbing state.

7. The moisture absorption device according to claims 3 to 5, characterized in that the top surface of the volatile film (420) is located within the mounting groove (210), or the top surface of the volatile film (420) is lower than the top surface of the flexible protective pad (300), forming a gap between the volatile film (420) and the permeable film (120).

8. The moisture absorption device according to any one of claims 2 to 5, characterized in that the volume of the containment cavity (110) is at least 1 times the volume of the dehumidification unit (200).

9. A method for manufacturing a moisture absorption device according to any one of claims 1 to 8, The steps include laying a flexible plastic film flat on a chain plate having mold grooves, The process involves vacuum forming a flexible plastic film under reduced pressure to form a flexible shell (100) having a housing cavity (110) corresponding to the shape of the mold groove, The steps include placing the dehumidifying unit (200) inside the housing cavity (110), The steps include covering the opening of the containment cavity (110) with a permeable membrane (120) and heat-sealing the periphery of the permeable membrane (120) and the flexible shell (100), A manufacturing method characterized by comprising the step of heat-sealing an impermeable sealing film (130) to the outside of a permeable film (120).

10. The manufacturing method according to claim 9, characterized in that an impermeable sealing film (130) is heat-sealed to the outside of the permeable film (120) at the same time as air is extracted from inside the containment cavity (110) so that the flexible shell (100) is vacuum-compressed and becomes compressed.

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