A high-applicability fresh-keeping sticker, fresh-keeping roll, fresh-keeping bag and fresh-keeping box

Abstract

The utility model discloses a kind of high applicability preservative stickers, including upper and lower area coincident outer cover and adhesive layer, the middle part of outer cover is equipped with the hollow area that passes through adhesive layer and is corresponding with the breathable hole of preservative package, the area of hollow area is greater than the area of breathable hole and is completely covered to breathable hole, the breathable layer that the hollow area is covered is provided, the breathable layer includes airway cloth and nuclear pore membrane, the nuclear pore membrane is attached connection, and the airway cloth is hard non-woven fabric.Preservative sticker outer cover forms the wrapping protective effect of nuclear pore membrane outside;And nuclear pore membrane is close to the side of preservative package and is also provided with hard non-woven fabric to protect, further play the protective effect to nuclear pore membrane;When producing preservative sticker, the dosage of nuclear pore membrane only needs to cover hollow area, can greatly save cost;Adhesive layer completely surrounds hollow area, so that hollow area and breathable hole are in register with deviation, and will not affect the breathable effect of nuclear pore membrane, and fault tolerance is high.

Description

Technical Field

[0001] This utility model relates to the field of food packaging technology, and in particular to a highly applicable food preservation sticker, food preservation roll, food preservation bag and food preservation box. Background Technology

[0002] How to better preserve fruits and vegetables during storage and transportation has always been a key concern in the industry. After harvesting, fruits and vegetables continue to respire and undergo physiological metabolism. Commonly used preservation bags are made of PE material, which has very poor air permeability. If completely sealed, this leads to insufficient oxygen, forcing the fruits and vegetables to undergo anaerobic respiration, producing alcohol and unpleasant odors, and causing rapid cell death. Carbon dioxide accumulation, especially high concentrations, inhibits normal metabolism and accelerates tissue browning. Ethylene retention prevents the release of ethylene from the fruits and vegetables, accelerating the ripening and decay of both the produce and surrounding plants. Current methods involve perforating the preservation bags to allow for proper respiration and expel some harmful gases, but this still doesn't solve the problem of humidity imbalance. Water vapor produced by respiration condenses inside the bag, and the perforations also provide entry points for external bacteria. Combined with the high humidity environment, this accelerates mold growth, leading to the spoilage of the fruits and vegetables.

[0003] To address the problem of fruit and vegetable preservation, current research suggests applying nucleoporous membranes (NPMs) to the fruit and vegetable industry. Utilizing the permeability and microbial barrier properties of NPMs, these membranes are installed on the ventilation holes of preservation packaging products to achieve moisture removal, air permeability, and contamination resistance. However, NPMs themselves lack sufficient strength and rigidity; wrinkles can affect the perforation function and they are easily damaged. To ensure the open state of the NPM, additional functional layers are generally required to ensure its proper functioning. For example, Chinese patent number 202420290496X, a utility model patent entitled "A Preservation Sticker and Preservation Packaging," proposes adding a polyester air duct cloth to the NPM to provide external barrier properties. Simultaneously, a support layer and an adhesive layer are added. The adhesive layer bonds the support layer to the NPM, and then the support layer is coated with adhesive to bond it to the preservation packaging. The problem with this structure is that the nucleopore membrane is not adequately protected. This is mainly because the nucleopore membrane and the air duct fabric are located in the perforated area corresponding to the ventilation holes in the food preservation packaging. The polyester material has poor abrasion resistance and is easily damaged, failing to provide effective protection for the nucleopore membrane. Structurally, the packaging is bonded to the support layer, with the nucleopore membrane and the polyester air duct fabric on the outer side. External friction easily damages and causes the nucleopore membrane to fail, and it can also detach from the adhesive layer, resulting in peeling. Therefore, we urgently need a food preservation label that can better protect the nucleopore membrane and is easy to manufacture. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a food preservation sticker, food preservation roll, food preservation bag, and food preservation box.

[0005] To achieve the above objectives, a highly adaptable food preservation patch includes an outer cover layer and an adhesive layer with overlapping upper and lower areas. The outer cover layer has a perforated area in the middle that penetrates the adhesive layer and corresponds to the ventilation holes of the food preservation packaging. The area of ​​the perforated area is larger than the area of ​​the ventilation holes and completely covers the ventilation holes. The perforated area is provided with a breathable layer covering it. The breathable layer includes an air duct cloth and a core pore membrane. The core pore membrane is bonded to the adhesive layer. The air duct cloth is a rigid non-woven fabric.

[0006] Rigid nonwoven fabric is selected as the airway fabric and attached to the nuclear pore membrane. The rigid nonwoven fabric serves as a structural support to prevent the nuclear pore membrane from wrinkling and deforming. The good air permeability of the nonwoven fabric ensures that the pores of the nuclear pore membrane function normally. Moreover, the nonwoven fabric has good wear resistance and is not easily damaged, which can better protect the nuclear pore membrane. The food preservation label is bonded to the outer cover layer and the food preservation packaging through an adhesive layer. Because the core-pore membrane is bonded to the adhesive layer, the outer cover layer provides external protection for the core-pore membrane. When subjected to external friction, the force is borne by the outer cover layer. The side of the core-pore membrane closest to the food preservation packaging is further protected by a rigid non-woven fabric, which provides additional protection for the core-pore membrane. The perforated area covers the vent holes, and the vent layer covers the perforated area. When producing the food preservation label, only the amount of core-pore membrane needed to cover the perforated area is required, which can greatly save costs. The adhesive layer completely surrounds the perforated area, which can seal the area around the perforated area to prevent the entry of gas and microorganisms. Even if there is a slight misalignment between the perforated area and the vent holes when using the food preservation label, it will not affect the breathability of the core-pore membrane, resulting in a high tolerance for error.

[0007] Preferably, the area ratio of the vent holes to the hollow area is 1:1.1-1.5, and the area ratio of the hollow area to the ventilated layer is 1:1.1-1.5.

[0008] Preferably, the bending stiffness of the rigid nonwoven fabric is 50-500 mN·m / m.

[0009] Preferably, the abrasion resistance of the rigid nonwoven fabric is greater than 10mg / 1000 cycles.

[0010] Preferably, the nuclear pore membrane is circular, rectangular, polygonal, or other irregular shapes.

[0011] Preferably, the pore size of the nuclear pore membrane is 300 nm-14 µm, and the thickness of the nuclear pore membrane is 8 µm-50 µm.

[0012] Preferably, the material of the nuclear pore membrane includes polycarbonate, polyester, polyimide, polyethylene, polypropylene, polytetrafluoroethylene, or polyethersulfone.

[0013] A food preservation roll, the food preservation roll comprising a strip of release paper, on which a plurality of food preservation stickers as described in any of the preceding claims are adhered, the release paper being bonded to an adhesive layer.

[0014] A food storage bag, wherein the food storage bag has a vent hole, and a food storage sticker as described in any of the preceding claims is adhered to the position corresponding to the vent hole, the food storage sticker completely covering the vent hole.

[0015] A food storage box is provided with ventilation holes, and a food preservation sticker as described in any of the above claims is adhered to the corresponding position of the ventilation holes, the food preservation sticker completely covering the ventilation holes.

[0016] Compared with the prior art, the beneficial effects of this utility model are: The food preservation patch provided by this utility model provides the strength and hardness required for the nuclear pore membrane through rigid non-woven fabric. The stable support of the rigid non-woven fabric effectively prevents poor air conduction caused by wrinkles in the nuclear pore membrane, facilitates production and processing, and helps control production costs. The high abrasion resistance of the rigid non-woven fabric can better protect the nuclear pore membrane and effectively prevent damage from external forces. At the same time, the air permeability of the rigid non-woven fabric does not affect the air permeability of the nuclear pore membrane. The food preservation label is bonded to the outer cover layer and the food preservation packaging through an adhesive layer. Because the core-pore membrane is bonded to the adhesive layer, the outer cover layer provides external protection for the core-pore membrane. When subjected to external friction, the force is borne by the outer cover layer. The side of the core-pore membrane closest to the food preservation packaging is further protected by a rigid non-woven fabric, which provides additional protection for the core-pore membrane. The perforated area covers the vent holes, and the vent layer covers the perforated area. When producing the food preservation label, only the amount of core-pore membrane needed to cover the perforated area is required, which can greatly save costs. The adhesive layer completely surrounds the perforated area, which can seal the area around the perforated area to prevent the entry of gas and microorganisms. Even if there is a slight misalignment between the perforated area and the vent holes when using the food preservation label, it will not affect the breathability of the core-pore membrane, resulting in a high tolerance for error.

[0017] The preservation sticker provided by this utility model is attached to the ventilation holes of preservation packaging. Through a nucleoporous membrane, it effectively regulates the respiration of fruits and vegetables inside the packaging. The excellent permeability of the nucleoporous membrane effectively removes gases such as acetylene and carbon dioxide, as well as moisture, from the packaging. Furthermore, it prevents external microorganisms from entering the packaging, providing a favorable environment for the storage of fruits and vegetables. This achieves the effects of regulating the respiration of fruits and vegetables, reducing their physiological metabolism, and inhibiting microbial growth, thereby extending the lifespan of fruits and vegetables. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the embodiments will be briefly introduced below.

[0019] Figure 1 This is a bottom view of the food preservation patch according to embodiments 1-3 of this utility model.

[0020] Figure 2 This is a cross-sectional view of the food preservation patch in Embodiments 1-3 of this utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the food preservation roll with a food preservation sticker attached, according to Embodiment 4 of this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the food storage box with a food preservation sticker attached, according to Embodiment 5 of this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of a food preservation bag with a food preservation sticker attached, according to Embodiment 6 of this utility model. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0025] Example 1 like Figures 1-2 As shown, a highly adaptable food preservation patch 100 is provided, comprising a breathable layer 110. The breathable layer 110 includes an air duct fabric 101 and a nucleopore membrane 102, which are heat-pressed together. The air duct fabric 101 is a rigid non-woven fabric with a bending stiffness of 50 mN·m / m. Through the support of the rigid non-woven fabric, the food preservation patch is not prone to wrinkling or deformation and exhibits good unfolding properties after application. The rigid non-woven fabric has an abrasion resistance of 10 mg / 1000 cycles, ensuring that the food preservation packaging is not easily worn during storage and transportation, effectively preventing damage or deformation of the nucleopore membrane from external forces. The nucleopore membrane 102 is circular in shape with a pore size of 300 nm and a thickness of 8 µm. Gas and moisture can effectively pass through the nucleopore membrane 102, and the nucleopore membrane 102 has excellent blocking properties against microorganisms and liquid water.

[0026] The food preservation label 100 also includes an outer cover layer 103 with overlapping upper and lower areas and an adhesive layer 104. The outer cover layer 103 has a perforated area 105 in its center, penetrating the adhesive layer 104 and corresponding to the ventilation holes of the food preservation packaging. The area of ​​the perforated area 105 is larger than the area of ​​the ventilation holes and completely covers them. A breathable layer 110 covers the perforated area 105. The breathable layer 110 includes an air duct fabric 101 and a core-pore membrane 102, which is bonded to the adhesive layer 104. The area ratio of the ventilation holes to the perforated area 105 is 1:1.1-1.5, and the area ratio of the perforated area 105 to the breathable layer 110 is also 1:1.1-1.5.

[0027] Oxygen and carbon dioxide enter and exit the food preservation packaging through vents, and are then regulated by the nucleopore membrane 102. This effectively controls the concentration of oxygen and carbon dioxide within the packaging, reducing the respiration of fruits and vegetables. Oxygen regulation prevents fruits and vegetables from being forced into anaerobic respiration, which produces alcohol and off-odors, and causes rapid cell death. Carbon dioxide regulation prevents high concentrations of carbon dioxide from inhibiting normal metabolism and accelerating tissue browning.

[0028] The accumulation of ethylene released by the physiological metabolism of fruits and vegetables accelerates the ripening and decay of the fruits and vegetables themselves and surrounding fruits and vegetables. The permeability coefficient of the nuclear pore membrane 102 to ethylene reaches 2.1×10⁻ 6 Its capacity of cm³·cm / (cm²·s·Pa) is five times that of LDPE film. This property allows for the rapid removal of ethylene released by fruits and vegetables, slows down the decomposition rate of chlorophyll, and inhibits the activity of polyphenol oxidase, thereby slowing down the ripening and decay of fruits and vegetables.

[0029] Water vapor produced by the respiration of fruits and vegetables condenses when it encounters cold air inside the preservation packaging, forming condensate. The high humidity environment will accelerate the growth of mold and cause the fruits and vegetables to rot. The nucleopore membrane has a high permeability to water vapor, and the nucleopore membrane 102 can effectively remove water vapor from the preservation packaging and prevent condensation.

[0030] The area of ​​the perforated area 105 is larger than the area of ​​the vent holes and completely covers them. This eliminates the need for precise positioning when using the food preservation label 100. The extra area of ​​the perforated area 105 provides room for error, making it more convenient and efficient to use. Furthermore, the adhesive layer 104 completely surrounds the perforated area 105, forming a closed structure, preventing microorganisms from entering the food preservation packaging through the gaps in the adhesive layer 104 after the food preservation label 100 is applied. The core-pore membrane 102 effectively blocks external microorganisms from entering the food preservation packaging, reducing the amount of microorganisms inside and controlling their reproduction rate.

[0031] The nuclear pore membrane 102 is made of materials including polycarbonate, polyester, polyimide, polyethylene, polypropylene, polytetrafluoroethylene, or polyethersulfone. The airway fabric 101 and the nuclear pore membrane 102 can be fixed together in various ways to form an integrated structure. For example, the edge areas of the airway fabric 101 and the nuclear pore membrane 102 can be glued together, or the airway fabric 101 with a similar melting point can be heat-pressed together with the nuclear pore membrane 102. The pressing structure must not damage the pores of the nuclear pore membrane 102.

[0032] Example 2 like Figures 1-2As shown, this embodiment provides a highly adaptable food preservation patch, whose structure is similar to that of Embodiment 1. The difference is that the rigid nonwoven fabric has a bending stiffness of 300 mN·m / m. Through the support of the rigid nonwoven fabric, the food preservation patch is less prone to wrinkling and deformation, and exhibits good unfolding properties after application. The rigid nonwoven fabric has an abrasion resistance of 30 mg / 1000 cycles, ensuring that the food preservation packaging is not easily worn during storage and transportation, effectively preventing damage or deformation of the nucleopore membrane from external forces. The nucleopore membrane 102 is circular in shape, with a pore size of 2 µm and a thickness of 25 µm. Gas and moisture can effectively pass through the nucleopore membrane 102, and the nucleopore membrane 102 has excellent blocking properties against microorganisms and liquid water.

[0033] Example 3 like Figures 1-2 As shown, this embodiment provides a highly adaptable food preservation patch, whose structure is similar to that of Embodiment 1. The difference is that the rigid nonwoven fabric has a bending stiffness of 500 mN·m / m. Through the support of the rigid nonwoven fabric, the food preservation patch is less prone to wrinkling and deformation, and exhibits good unfolding properties after application. The rigid nonwoven fabric has an abrasion resistance of 90 mg / 1000 cycles, ensuring that the food preservation packaging is not easily worn during storage and transportation, effectively preventing damage or deformation of the nucleopore membrane from external forces. The nucleopore membrane 102 is circular in shape, with a pore size of 14 µm and a thickness of 50 µm. Gas and moisture can effectively pass through the nucleopore membrane 102, and the nucleopore membrane 102 has excellent blocking properties against microorganisms and liquid water.

[0034] Example 4 like Figure 3 As shown, a food preservation roll is provided, which includes a roll of release paper 200, on which a plurality of food preservation stickers 100 are adhered. The release paper 200 and the food preservation stickers 100 are bonded together. According to the use needs, the food preservation stickers 100 can be directly peeled off the release paper 200 and applied to the target food preservation packaging.

[0035] Example 5 like Figure 4 As shown, a food storage box 300 is provided. A food preservation sticker 100 is attached to the ventilation hole on one side of the food storage box 300. The food preservation sticker 100 completely covers the ventilation hole and is attached to the outside of the food storage box 300.

[0036] Example 6 like Figure 5 As shown, a food storage bag 400 is provided. Figure 5 The food storage bag 400 shown in Figure a has a ventilation hole 10. Figure 5 As shown in b, a food storage bag 400 has a food storage sticker 100 attached to the vent hole 10, and the food storage sticker 100 completely covers the vent hole 10.

[0037] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A highly applicable food preservation sticker, characterized in that, The product includes an outer cover layer and an adhesive layer with overlapping upper and lower areas. The outer cover layer has a perforated area in the middle that penetrates the adhesive layer and corresponds to the ventilation holes of the preservation packaging. The area of ​​the perforated area is larger than the area of ​​the ventilation holes and completely covers the ventilation holes. The perforated area is provided with a breathable layer covering it. The breathable layer includes an air duct cloth and a core pore membrane. The core pore membrane is bonded to the adhesive layer. The air duct cloth is a rigid non-woven fabric.

2. The highly adaptable food preservation patch according to claim 1, characterized in that, The area ratio of the ventilation holes to the hollowed-out area is 1:1.1-1.5, and the area ratio of the hollowed-out area to the ventilation layer is 1:1.1-1.

5.

3. The highly adaptable food preservation patch according to claim 1, characterized in that, The bending stiffness of the rigid nonwoven fabric is 50-500 mN·m / m.

4. The highly adaptable food preservation patch according to claim 1, characterized in that, The abrasion resistance of the rigid nonwoven fabric is greater than 10mg / 1000 cycles.

5. A highly adaptable food preservation patch according to claim 1, characterized in that, The nuclear pore membrane can be circular, rectangular, polygonal, or other irregular shapes.

6. The highly adaptable food preservation patch according to claim 1, characterized in that, The pore size of the nuclear pore membrane is 300nm-14µm, and the thickness of the nuclear pore membrane is 8µm-50µm.

7. A highly adaptable food preservation patch according to claim 1, characterized in that, The materials of the nuclear pore membrane include polycarbonate, polyester, polyimide, polyethylene, polypropylene, polytetrafluoroethylene, or polyethersulfone.

8. A food preservation roll, characterized in that, The preservation roll includes a strip of release paper, on which a plurality of highly adaptable preservation stickers as described in any one of claims 1-7 are adhered, and the release paper is bonded to the adhesive layer.

9. A food storage bag, characterized in that, The food preservation bag has ventilation holes, and a highly adaptable food preservation sticker according to any one of claims 1-7 is adhered to the corresponding position of the ventilation holes, and the food preservation sticker completely covers the ventilation holes.

10. A food storage box, characterized in that, The food storage box has ventilation holes, and a highly adaptable food preservation sticker as described in any one of claims 1-7 is adhered to the corresponding position of the ventilation holes, and the food preservation sticker completely covers the ventilation holes.

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