An indicator-type deoxidizer

Abstract

This application relates to the field of deoxidizers, and more particularly to an indicator-type deoxidizer, comprising a deoxidizer and an oxygen indicator. The deoxidizer includes a packaging bag and deoxidizing material placed inside the packaging bag. The oxygen indicator includes a fixing layer, a separating layer, and an oxygen indicator layer. The fixing layer has an adhesive layer on its surface. The separating layer is connected to the fixing layer through the adhesive layer. The oxygen indicator layer is placed between the separating layer and the surface of the packaging bag and is pressed into a single structure. The fixing layer, adhesive layer, and separating layer are made of breathable material and have ventilation holes. The oxygen indicator may also include a heat insulation layer. The packaging bag is made of a breathable material, etc. This application achieves the technical effects of effectively indicating the deoxidation status, protecting the oxygen indicator with a heat insulation layer, and ensuring contact between oxygen and the oxygen indicator through a breathable structure, thereby improving the accuracy and stability of the indication.

Description

Technical Field

[0001] This application relates to the field of deoxidizer processing technology, and in particular to an indicator deoxidizer. Background Technology

[0002] Oxygen indicator deoxidizers are widely used in food packaging as preservatives. They primarily absorb oxygen within the packaging to prevent oxidation, mold, and rancidity, thereby extending the shelf life of the food. Traditionally, oxygen indicator deoxidizers are packaged in breathable bags, with the oxygen indicator fixed inside the bag using a heat-sealing process. However, this traditional heat-sealing process has a significant drawback: the high temperature during heat sealing can easily damage the oxygen indicator, causing it to malfunction or reduce its color development, thus affecting the effectiveness of the deoxidizer.

[0003] To further reduce the impact of high heat sealing temperatures on food-grade oxygen indicator deoxidizers, existing technologies place the oxygen indicator of the deoxidizer within a cavity enclosed by a base layer, a first double-sided adhesive layer, a second double-sided adhesive layer, and an inner film. The transparent base layer and / or the inner film are themselves breathable or have micropores to ensure oxygen can enter the cavity and allow the oxygen indicator to display its color correctly. The first and second double-sided adhesive layers are spaced apart and adhere to the surfaces of the inner film and the deoxidizer component, thus fixing the oxygen indicator. In other words, the inner film isolates the oxygen indicator and the deoxidizer component, preventing direct contact between them. This avoids the risk of the deoxidizer component accumulating and generating heat during production or use, which could cause the oxygen indicator to degrade in color or slow down its color change, resulting in an indistinct color change due to high temperatures.

[0004] However, while this improved structural design enhances the color development and stability of the oxygen indicator to some extent, it introduces new challenges during actual processing. The adhesion and positioning of multilayer materials, the placement and fixation of the oxygen indicator, the achievement of breathability or microporous design, and the pressing and adhesion of the double-sided adhesive layer all complicate the entire processing. These complex steps not only increase production costs but also significantly reduce production efficiency, hindering large-scale industrial production. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides an indicator-type deoxidizer.

[0006] Firstly, this application provides an indicator-type deoxidizer, which adopts the following technical solution:

[0007] An indicator-type deoxidizer includes a deoxidizer and an oxygen indicator. The deoxidizer includes a packaging bag and deoxidizing material placed inside the packaging bag. The oxygen indicator includes a fixing layer, an isolation layer, and an oxygen indicator layer. An adhesive layer is disposed on the surface of the fixing layer. The isolation layer is connected to the fixing layer through the adhesive layer. The oxygen indicator layer is placed between the isolation layer and the surface of the packaging bag. The isolation layer, the oxygen indicator, and the surface of the packaging bag are pressed together into an integral structure.

[0008] By adopting the above technical solution, this application uses a structure of a fixing layer, an isolation layer, and an oxygen indicator layer, directly pressing the oxygen indicator layer onto the surface of the packaging bag. This eliminates the complex steps of multi-layer material adhesion and positioning, reducing processing steps and lowering material and processing costs. Simultaneously, pressing the isolation layer, oxygen indicator layer, and packaging bag surface into a single structure avoids the complex pressing and adhesion processes of traditional double-sided adhesive layers, simplifying the production process, shortening the production cycle, improving production efficiency, and making it more suitable for large-scale industrial production.

[0009] By setting an isolation layer between the oxygen indicator layer and the fixing layer, it is possible to prevent the oxygen indicator layer from bonding with the adhesive layer and affecting the color development effect of the oxygen indicator.

[0010] Optionally, the fixing layer, the adhesive layer, and the isolation layer are all made of breathable materials.

[0011] By adopting the above technical solution, a multi-layer structure is formed by the fixing layer, adhesive layer and isolation layer. The use of breathable material can ensure that oxygen can pass smoothly through these layers to reach the oxygen indicator layer, so that the oxygen indicator can respond more sensitively to changes in oxygen, thereby developing color quickly and accurately.

[0012] Preferably, both the fixing layer and the isolation layer have through-holes in the same location, and the through-holes are evenly distributed in the orthographic projection area of ​​the oxygen indicator layer.

[0013] By employing the above technical solution, through-hole ventilation holes are created in the fixing layer, adhesive layer, and isolation layer, allowing oxygen to quickly reach the oxygen indicator layer directly through these holes, significantly improving oxygen transmission efficiency. Simultaneously, the ventilation holes are evenly distributed within the orthographic projection area of ​​the oxygen indicator layer, ensuring that oxygen reaches all parts of the oxygen indicator layer uniformly. This allows the oxygen indicator to respond more sensitively to changes in oxygen levels, resulting in rapid and accurate color development and avoiding uneven color development caused by uneven oxygen supply.

[0014] By creating through-holes in the fixing layer, adhesive layer, and isolation layer, air permeability is directly achieved without the need for additional complex microporous structures, thus simplifying the overall structural design. The processing of the air holes in this application is relatively simple, and the uniform distribution design reduces the high requirements for processing precision, thereby lowering the processing difficulty and cost.

[0015] Preferably, the vent holes are arranged in an array, and the diameter of each vent hole is 0.1-0.5 mm.

[0016] By adopting the above technical solution, the arrayed vents ensure that oxygen reaches all parts of the oxygen indicator layer uniformly, avoiding localized insufficient or excessive oxygen supply, thereby improving the color uniformity of the oxygen indicator. The vent diameter within this range ensures rapid oxygen passage while avoiding oxygen loss or reduced structural strength due to excessively large pore sizes.

[0017] Preferably, the oxygen indicator further includes a heat insulation layer, which is located between the isolation layer and the heat insulation layer. The side of the heat insulation layer away from the oxygen indicator layer is connected to the surface of the packaging bag. The isolation layer, the oxygen indicator layer, the heat insulation layer, and the surface of the packaging bag are pressed together into an integral structure.

[0018] By adopting the above technical solution, the oxygen indicator layer is sandwiched between an isolation layer and a heat insulation layer. This double heat insulation structure can more effectively block the heat generated by the deoxidizer during operation. Even if the deoxidizer generates heat due to chemical reactions during use, the isolation layer and the heat insulation layer can work together to prevent heat from being transferred to the oxygen indicator layer, thereby better protecting the color development performance and stability of the oxygen indicator.

[0019] The isolation layer, oxygen indicator layer, heat insulation layer, and packaging bag surface are pressed together into a single structure. This integrated design makes the entire oxygen absorber structure more compact and stable. All components are tightly bonded, preventing loosening or detachment. Even under external forces during transportation or use, the structure maintains its integrity, ensuring the proper functioning of both the oxygen absorber and oxygen indicator. Furthermore, the integrated design simplifies the processing of the oxygen absorber, reducing the need for multi-layer material adhesion and positioning, thus lowering operational difficulty and costs during production. This design also facilitates installation and use in food packaging, improving packaging efficiency.

[0020] Preferably, the thickness of the heat insulation layer is greater than the thickness of the isolation layer.

[0021] By adopting the above technical solution, the insulation layer is thicker than the isolation layer, which means that the insulation layer can provide stronger heat insulation capabilities. During the deoxidizer's operation, the deoxidizing material reacts chemically with oxygen and generates heat. The thicker insulation layer can more effectively block this heat from being transferred to the oxygen indicator layer, thereby better protecting the oxygen indicator from high temperatures.

[0022] Meanwhile, thanks to the enhanced thermal insulation provided by the insulation layer, the oxygen indicator can operate in a more stable temperature environment. Even under conditions of prolonged operation or heat generation from accumulated deoxidizer, the oxygen indicator will not experience a decline in color development or failure due to high temperatures, thus significantly extending its service life.

[0023] Furthermore, a thicker insulation layer provides more stable support during the lamination process, making the entire structure more robust. After the isolation layer, oxygen indicator layer, insulation layer, and packaging bag surface are laminated together, the thicker insulation layer better resists external forces, preventing the structure from loosening or deforming.

[0024] Optionally, the packaging bag is made of a breathable material, and the breathability of the packaging bag is greater than that of the fixing layer.

[0025] By adopting the above technical solution, the use of breathable material in the packaging bag can ensure the entry of oxygen. The pore size of the packaging bag is larger than that of the fixed layer, which allows oxygen to preferentially contact the deoxidizing material, improves the deoxidation efficiency, and avoids the oxygen indicator layer from being directly impacted by a large amount of oxygen, ensuring its color stability, thereby improving the overall performance of the deoxidizer.

[0026] Preferably, the insulating layer and the heat insulation layer are PET layers, polytetrafluoroethylene layers, polyurethane layers, polypropylene layers, polyimide layers, or nanoporous ePTFE composite membrane layers.

[0027] By adopting the above technical solutions, the materials exhibit excellent thermal insulation properties, effectively blocking heat transfer and further enhancing the insulation effect, ensuring that the oxygen indicator operates in a more stable temperature environment. A variety of insulation materials are available, allowing selection of suitable materials based on different application scenarios and needs, thus improving the product's adaptability and flexibility. For example, polytetrafluoroethylene (PTFE) possesses good chemical stability and high-temperature resistance, making it suitable for use in high-temperature environments; while the nanoporous ePTFE composite membrane layer offers higher air permeability and thermal insulation performance, better meeting the requirements for high-precision deoxygenation and indication.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. This application employs a combination of a fixing layer, an isolation layer, and an oxygen indicator layer, which are then pressed together with the surface of the packaging bag to form a single integrated structure. This eliminates the need for traditional, complex multi-layer material adhesion and positioning processes, greatly simplifying the production process and shortening the production cycle. This not only reduces material and processing costs but also improves production efficiency, making the product more suitable for large-scale industrial production.

[0030] Secondly, by placing an isolation layer between the oxygen indicator layer and the packaging bag, the high temperature during the heat sealing process is effectively isolated, protecting the oxygen indicator layer from the effects of high temperatures and ensuring its stable color development performance. This design avoids the problem of decreased color development or failure due to high temperatures, significantly enhancing the reliability and stability of the product and extending the service life of the oxygen indicator. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of an indicator-type deoxidizer in Example 1.

[0032] Figure 2 This is a schematic diagram of the layer structure of an indicator deoxidizer in Example 1.

[0033] Figure 3 This is a schematic diagram of the layer structure of an indicator deoxidizer in Example 2.

[0034] Explanation of reference numerals in the attached drawings: 1. Deoxidizer; 11. Packaging bag; 12. Deoxidizer material; 2. Oxygen indicator; 21. Fixing layer; 22. Isolation layer; 23. Oxygen indicator layer; 24. Adhesive layer; 25. Ventilation holes; 26. Insulation layer. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0036] Example 1

[0037] This application discloses an indicator-type deoxidizer, referring to... Figure 1 and Figure 2The system includes an oxygen absorber 1 and an oxygen indicator 2. The oxygen absorber 1 includes a packaging bag 11 and an oxygen absorber material 12 placed inside the packaging bag 11. The oxygen indicator 2 includes a fixing layer 21, an isolation layer 22, and an oxygen indicator layer 23. The surface of the fixing layer 21 is coated with an adhesive layer 24. The isolation layer 22 is connected to the fixing layer 21 through the adhesive layer 24. The oxygen indicator layer 23 is placed between the isolation layer 22 and the surface of the packaging bag 11, and the isolation layer 22, the oxygen indicator layer 23, and the surface of the packaging bag 11 are pressed together into a single structure. The fixing layer 21, the adhesive layer 24, and the isolation layer 22 all have through-holes 25 in the same location, and the vents 25 are evenly distributed in the orthographic projection area of ​​the oxygen indicator layer 23. In this embodiment, the vents 25 are arranged in an array, and the diameter of each vent 25 is 0.1 mm. In other embodiments, the diameter of each vent 25 can be 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm.

[0038] Both the fixing layer 21 and the isolation layer 22 are made of breathable materials. In this embodiment, the isolation layer 22 is a polytetrafluoroethylene layer. In other embodiments, the isolation layer 22 can be a PET layer, a polyurethane layer, a polypropylene layer, a polyimide layer, or a nanoporous ePTFE composite membrane layer. The fixing layer 21 can be a TPE breathable membrane.

[0039] The implementation principle of the indicator-type deoxidizer in this application embodiment is as follows: through the reasonable combination and pressing structure of the fixing layer 21, the isolation layer 22, and the oxygen indicator layer 23, the influence of external high temperature on the oxygen indicator layer 23 is effectively reduced, ensuring the normal color development performance of the oxygen indicator layer 23. Simultaneously, the design of the breathable material and the vent holes 25 ensures that oxygen can smoothly enter the oxygen indicator layer 23, enabling it to accurately indicate changes in the surrounding oxygen content. Compared with traditional indicator-type deoxidizers, this structural design is simpler, avoids complex multi-layer adhesion and positioning processes, reduces production costs, improves production efficiency, and is more suitable for large-scale industrial production, representing a significant improvement and enhancement to existing technologies.

[0040] Example 2

[0041] This application discloses an indicator-type deoxidizer. The difference between this embodiment and Embodiment 1 is that, referring to… Figure 3The oxygen indicator 2 also includes a heat insulation layer 26. An oxygen indicator layer 23 is located between the isolation layer 22 and the heat insulation layer 26. The side of the heat insulation layer 26 away from the oxygen indicator layer 23 is connected to the surface of the packaging bag 11. The isolation layer 22, oxygen indicator layer 23, heat insulation layer 26, and the surface of the packaging bag 11 are pressed together into a single structure. The thickness of the heat insulation layer 26 is greater than the thickness of the isolation layer 22. The packaging bag 11 is made of a breathable material, and the breathability of the packaging bag 11 is greater than that of the fixing layer 21. In this embodiment, the isolation layer 22 and the heat insulation layer 26 are polytetrafluoroethylene (PTFE) layers. In other embodiments, the isolation layer 22 and the heat insulation layer 26 can be a polypropylene layer, a polyimide layer, or a nanoporous ePTFE composite membrane layer.

[0042] The implementation principle of this embodiment is as follows: by adding a heat insulation layer 26 with a specific thickness design, the heat insulation protection of the oxygen indicator layer 23 is further enhanced. The double heat insulation structure can more effectively block external high temperatures, reducing the impact of high temperatures on the oxygen indicator layer 23, thereby improving the stability and reliability of the indicator-type deoxidizer in high-temperature environments. Compared with existing technologies, this improved structural design significantly enhances heat insulation performance, providing a wider range of applications for indicator-type deoxidizers, while also reducing production costs and improving production efficiency, meeting the needs of large-scale industrial production.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An indicator deoxidizer comprising a deoxidizer (1) and an oxygen indicator (2), the deoxidizer (1) comprising a packaging bag (11) and a deoxidizing material (12) disposed inside the packaging bag (11), characterized in that: The oxygen indicator (2) includes a fixing layer (21), an isolation layer (22) and an oxygen indicator layer (23). An adhesive layer (24) is provided on the surface of the fixing layer (21). The isolation layer (22) is connected to the fixing layer (21) through the adhesive layer (24). The oxygen indicator layer (23) is placed between the isolation layer (22) and the surface of the packaging bag (11). The surfaces of the isolation layer (22), the oxygen indicator layer (23) and the packaging bag (11) are pressed together into an integral structure.

2. The indicating deoxidizer of claim 1, wherein: Both the fixing layer (21) and the isolation layer (22) are made of breathable material.

3. The indicating deoxidizer of claim 2, wherein: The fixing layer (21), the adhesive layer (24) and the isolation layer (22) are all provided with through vents (25) in the same place, and the vents (25) are evenly distributed in the orthographic projection area of ​​the oxygen indicator layer (23).

4. The indicating deoxidizer of claim 3, wherein: The vents (25) are arranged in an array, and the diameter of each vent (25) is 0.1-0.5 mm.

5. The indicator-type deoxidizer according to claim 1, characterized in that: The oxygen indicator (2) further includes a heat insulation layer (26), the oxygen indicator layer (23) is located between the isolation layer (22) and the heat insulation layer (26), the side of the heat insulation layer (26) away from the oxygen indicator layer (23) is connected to the surface of the packaging bag (11), and the isolation layer (22), the oxygen indicator layer (23), the heat insulation layer (26) and the surface of the packaging bag (11) are pressed together into an integral structure.

6. The indicating deoxidizer of claim 5, wherein: The thickness of the heat insulation layer (26) is greater than the thickness of the isolation layer (22).

7. The indicating deoxidizer of claim 1, wherein: The packaging bag (11) is made of a breathable material, and the breathability of the packaging bag (11) is greater than that of the fixing layer (21).

8. The indicating deoxidizer of claim 5 wherein: The isolation layer (22) and the heat insulation layer (26) are PET layer, polytetrafluoroethylene layer, polyurethane layer, polypropylene layer, polyimide layer or nanoporous ePTFE composite membrane layer.

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