Desiccant storage bag
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2026-01-16
- Publication Date
- 2026-04-13
Smart Images
Figure 0003255487000001_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field related to dehumidification and cleaning, and particularly relates to a desiccant storage bag.
Background Art
[0002] Conventional desiccant storage bags generally have a structure in which a breathable film (breathable material) and a resin film (non-breathable material) are combined, filled with calcium chloride as a desiccant, and then the bag mouth is directly heat-sealed. However, since calcium chloride has the property of liquefying after absorbing moisture, liquid is generated inside. The breathable material and the non-breathable material have different materials and also have differences in temperature response characteristics during heating. In addition, since fine powder of calcium chloride may remain near the bag mouth during the filling process, temperature control becomes even more difficult in the heat-sealing process. Such temperature variations easily damage the micropores of the breathable material, and as a result, there is a risk of liquid leakage.
Summary of the Invention
[0003] [[ID=I20]] In order to solve the above problems of the prior art, an object of the present invention is to provide a desiccant storage bag that prevents liquid leakage and has excellent sealing reliability.
[0004] To achieve the above object, the present invention provides the following technical means. The desiccant storage bag includes a breathable sheet portion and a non-breathable sheet portion. The breathable sheet portion and the non-breathable sheet portion are heat-sealed on three sides to form a bag body with one side open. At the opening, the height of the breathable sheet portion is set lower than that of the non-breathable sheet portion, and a sealing sheet portion made of the same material as the non-breathable sheet portion is heat-sealed to the breathable sheet portion. Preferably, the sealing sheet portion is integrally formed with the non-breathable sheet portion. Preferably, the sealing sheet portion is joined in a sealed state by heat-sealing outside the breathable sheet portion. Preferably, the sealing sheet portion has a heat-sealable portion that is joined to the non-permeable sheet portion. Preferably, the sealing sheet portion is provided with a suspension hole, the suspension hole penetrates the non-permeable sheet portion and is positioned above the heat-sealed portion.
[0005] Compared to conventional technology, the beneficial effects of this invention are as follows: According to this invention, by setting the opening height of the breathable sheet portion lower than that of the corresponding non-breathable sheet portion, and then compensating for the height of the opening with a sealing sheet portion made of the same material as the non-breathable sheet portion, it becomes possible to weld materials together during heat welding. This improves sealing performance and welding reliability, and effectively prevents leakage of liquid that occurs after calcium chloride absorbs moisture. [Brief explanation of the drawing]
[0006] [Figure 1] Figure 1 is a front view of Embodiment 1 of the present invention. [Figure 2] Figure 2 is a front view of Embodiment 2 of the present invention. [Figure 3] Figure 3 is a cross-sectional view of the opening of the desiccant storage bag according to the present invention. [Figure 4] Figure 4 is an unfolded view showing the state in which the non-breathable sheet portion and the sealing sheet portion of the present invention are integrally molded. [Modes for carrying out the invention]
[0007] The embodiments of the present invention will be described below with reference to the drawings. The embodiments shown below are examples of the present invention, and the present invention is not limited thereto. All other embodiments obtained by those skilled in the art without creative ingenuity based on the embodiments of the present invention are within the scope of protection of the present invention. Embodiments of the present invention will be described with reference to Figures 1 to 4.
[0008] Example 1 As shown in Figures 1 and 3, the desiccant storage bag according to this embodiment comprises a breathable sheet portion 1 and a non-breathable sheet portion 2. The breathable sheet portion 1 and the non-breathable sheet portion 2 are heat-sealed on three sides, forming a bag body with one side open. At the opening, the height of the breathable sheet portion 1 is set lower than that of the non-breathable sheet portion 2, and a sealing sheet portion 3 made of the same material as the non-breathable sheet portion 2 is heat-sealed to the breathable sheet portion 1. In this way, by setting the breathable sheet portion 1 to be short at the opening and compensating for the height of the opening with a sealing sheet portion 3 made of the same material as the non-breathable sheet portion 2, it becomes possible to join materials of the same type during heat welding, improving the stability and sealing strength of the sealing joint. As a result, leakage of liquid that occurs after calcium chloride absorbs moisture can be prevented.
[0009] Example 2 Based on Example 1, as shown in Figures 2 and 4, the sealing sheet portion 3 is integrally molded with the non-permeable sheet portion 2. The sealing sheet portion 3 is joined to the outside of the permeable sheet portion 1 in a sealed state by heat welding, and a heat-welded portion 4 is formed on the sealing sheet portion 3 to join with the non-permeable sheet portion 2. In addition, the sealing sheet portion 3 is provided with a suspension hole 5, which penetrates the non-permeable sheet portion 2 and is positioned above the heat-welded portion 4. The configuration with the suspension hole 5 allows the desiccant storage bag to be suspended for use.
[0010] While embodiments of the present invention have been illustrated and described, those skilled in the art will understand that various modifications, alterations, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is limited by the appended claims and their equivalents. [Explanation of symbols]
[0011] 1. Breathable sheet section 2 Non-breathable sheet section 3. Sealing sheet section 4 Heat welded part 5. Hanging holes
Claims
1. A desiccant storage bag, It comprises a breathable sheet section (1) and a non-breathable sheet section (2), The breathable sheet portion (1) and the non-breathable sheet portion (2) are heat-sealed on three sides, forming a bag with one side open. In the aforementioned opening, the height of the breathable sheet portion (1) is set lower than that of the non-breathable sheet portion (2). A sealing sheet portion (3) made of the same material as the non-breathable sheet portion (2) is heat-sealed to the breathable sheet portion (1). A desiccant storage bag characterized by the following features.
2. The sealing sheet portion (3) is integrally molded with the non-breathable sheet portion (2). A desiccant storage bag according to claim 1, characterized by the above.
3. The sealing sheet portion (3) is joined to the outside of the breathable sheet portion (1) in a sealed state by heat welding. A desiccant storage bag according to claim 1, characterized by the above.
4. The sealing sheet portion (3) has a heat-sealed portion (4) that is joined to the non-permeable sheet portion (2). A desiccant storage bag according to claim 1, characterized by the above.
5. A hanging hole (5) is provided in the sealing sheet portion (3). The aforementioned suspension hole (5) penetrates the non-breathable sheet portion (2) and is positioned above the heat-welded portion (4). A desiccant storage bag according to claim 4, characterized by the above.