Fresh-keeping bag and packaging product

Abstract

The utility model relates to the technical field of preservation, in particular to a preservation bag and a packaging product. The freshness protection bag comprises an outer bag body with a second opening; the inner bag body is located in the outer bag body and fixedly connected with the outer bag body, and the inner bag body is provided with a first opening located at the second opening; a first containing cavity used for containing articles to be preserved is defined in the inner bag body, and a second containing cavity used for containing a preservative is defined between the inner bag body and the outer bag body. The fresh-keeping agent provides fresh-keeping support for the object to be kept fresh based on gaseous substances which are transmitted between the first containing cavity and the second containing cavity and pass through the inner bag body, and the fresh-keeping agent can be taken out and put in through the second opening.

Description

Technical Field

[0001] This application relates to the field of food preservation technology, and more particularly to a food preservation bag and packaging product. Background Technology

[0002] To extend the shelf life of items such as fruits, tea, and pastries, they are typically placed in refrigerated environments, such as cold storage facilities, to achieve a preservation effect. Publication number 220411395U proposes a food preservation bag that uses vacuum packaging to preserve food, but this type of bag has inconveniences in its use. Summary of the Invention

[0003] In view of this, this application proposes a food preservation bag and packaging product.

[0004] Firstly, a food storage bag is proposed, comprising:

[0005] The outer bag has a second opening;

[0006] The inner bag body is located inside the outer bag body and is fixedly connected to the outer bag body, and has a first opening located at the second opening;

[0007] The inner bag defines a first receiving cavity inside for receiving the item to be preserved, and a second receiving cavity is defined between the inner bag and the outer bag for receiving a preservative. The preservative provides preservation support to the item based on gaseous substances passing through the inner bag between the first and second receiving cavities, and the preservative can be removed and placed through the second opening.

[0008] In some possible implementations, the inner bag has higher permeability than the outer bag for the gaseous substance.

[0009] In some possible implementations, a sealing component capable of closing the second opening is also included.

[0010] In some possible implementations, the sealing component is a sealing zipper disposed at the second opening, the sealing zipper comprising:

[0011] Two guide rails are respectively disposed on the outer bag body on opposite sides of the second opening;

[0012] A slider is slidably engaged with the two guide rails;

[0013] The second opening is switched between an open state and a closed state by sliding the slider.

[0014] In some possible implementations, the first opening is located between the two guide rails, and based on this, the first opening is switched between an open state and a closed state by sliding the slider.

[0015] In some possible implementations, at least a portion of the outer bag is transparent, and the preservative can be observed through the transparent portion of the outer bag;

[0016] At least a portion of the inner bag is transparent, and the preserved item can be observed through the transparent portions of the outer bag and the inner bag.

[0017] In some possible implementations, the inner bag body includes an upper portion and a lower portion arranged sequentially along the depth direction of the first receiving cavity, the lower portion being formed of waterproof and breathable PE spunbond nonwoven fabric, and the upper portion being formed of a first transparent plastic film.

[0018] The outer bag is formed of a second transparent plastic film.

[0019] In some possible implementations, the first transparent plastic film is a PE film, and the second transparent plastic film is a PE film, a PE-PA blend film, or a PE-PET blend film.

[0020] In some possible implementations, the inner bag and the outer bag have a common bottom portion that is opposite to the second opening and the first opening in the depth direction of the first receiving cavity.

[0021] In some possible implementations, the food storage bag has a flattened state, and the flattened food storage bag includes:

[0022] A first sheet, a second sheet, a third sheet, and a fourth sheet are stacked sequentially in the thickness direction. Each sheet has a first side and a second side opposite to each other in the width direction, and a third side and a fourth side opposite to each other in the depth direction of the first receiving cavity. The first side, the second side, and the third side of the first sheet are respectively joined to the first side, the second side, and the third side of the second sheet, thereby forming a first bag-like body that can open on the fourth side. The first bag-like body defines a portion of the second receiving cavity inside. The first side, the second side, and the third side of the third sheet are respectively joined to the first side, the second side, and the third side of the fourth sheet. The three sides are joined to form a second bag-like body that can open on the fourth side. The second bag-like body defines another part of the second receiving cavity inside. The first and second sides of the second sheet and the first and second sides of the third sheet each have a lower section extending from the junction to the third side and an upper section extending from the junction to the fourth side. The upper sections of the first and second sides of the second sheet are joined to the upper sections of the first and second sides of the third sheet, respectively. The lower sections of the first and second sides of the second sheet are not joined to each other.

[0023] A fifth sheet, folded in half, is disposed between the second and third sheets, and the edge of the fifth sheet connects the lower sections of the third, first, and second sides of the second sheet and the lower sections of the third, first, and second sides of the third sheet. Thus, the fifth, second, and third sheets define the inner bag body, and the fifth, first, and fourth sheets define the outer bag body.

[0024] In some possible implementations, the fifth sheet is a transparent structure.

[0025] Secondly, a packaged product is proposed, including:

[0026] As described in the first aspect, the food storage bag;

[0027] The preserved items are contained in the first receiving cavity;

[0028] The preservative is contained in the second receiving cavity.

[0029] The preservation bag provided in this application can effectively support the preservation of the packaged items and allows for easy replacement of the preservative, enabling the preservation bag to be used for a long time. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this application, and are not intended to limit this application.

[0031] Figure 1 This is a schematic diagram of the appearance of the food storage bag provided in the embodiments of this application.

[0032] Figure 2 This is a side view of the moisture permeability of the food preservation bag provided in the embodiments of this application.

[0033] Figure 3 This is a schematic diagram of the structure of the food storage bag provided in this application embodiment after the sealing zipper has been removed and the bag has been unfolded.

[0034] Figure 4 yes Figure 3 The figure is a sectional view along the XX direction, and for ease of understanding of the technology, the thickness of each sheet and each joint is exaggerated in the figure.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100-Packaging Bag;

[0037] 10-inner bag body, 20-outer bag body, 30-sealing zipper;

[0038] Dr1 - Depth direction, Dr2 - Width direction, Dr3 - Thickness direction;

[0039] 1-First sheet, 2-Second sheet, 3-Third sheet, 4-Fourth sheet, 5-Fifth sheet;

[0040] 6-Guide rail, 7-Slider;

[0041] S1 - First side, S2 - Second side, S3 - Third side, S4 - Fourth side;

[0042] O1 - First opening, O2 - Second opening;

[0043] C1 - First cavity, C2 - Second cavity;

[0044] P1 - Upper part, P2 - Lower part;

[0045] A1 - Upper section, A2 - Lower section;

[0046] J1 - First joint, J2 - Second joint, J3 - Third joint, J4 - Fourth joint;

[0047] BM - Bottom section;

[0048] CC - boundary;

[0049] BG1 - First bag-shaped body, BG2 - Second bag-shaped body. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It is understood that, without conflict, some technical means of the various embodiments described herein can be substituted for or combined with each other.

[0051] In the description of this application, the terms "first," "second," etc., are used only to distinguish the described objects and have no sequential or technical meaning. Therefore, objects specified with "first," "second," etc., may explicitly or implicitly include one or more of those objects, and, for example, the term "first element" itself does not imply the existence of a "second element," nor does the term "second element" itself imply the existence of a "first element." Furthermore, words such as "a" or "one" do not indicate a quantity limitation, but rather indicate the presence of at least one, while "multiple" indicates not less than two.

[0052] In the description of this application, the terms "comprising" or "having" indicate the presence of the said features, numbers, operations, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, numbers, operations, elements, and / or combinations thereof.

[0053] In the description of this application, references to "one embodiment" or "some embodiments" mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.

[0054] Figures 1 to 4 The illustration schematically shows a food storage bag provided in an embodiment of this application, which includes an outer bag body 20 and an inner bag body 10. The outer bag body 20 has an upward-facing second opening O2. The inner bag body 10 is located inside the outer bag body 20 and is fixedly connected to the outer bag body 20. Therefore, during use, the inner bag body 10 cannot be removed or detached from the outer bag body 20, and the two always remain as a whole. In addition, the inner bag body 10 has a first opening O1 located at the second opening O2 and also facing upward.

[0055] The inner bag 10 defines a first receiving cavity C1 for containing items to be preserved (not shown), and a second receiving cavity C2 for containing preservatives (not shown) is defined between the inner bag 10 and the outer bag 20. In use, items requiring preservation, such as fruits, tea, and pastries, can be placed in the first receiving cavity C1 of the inner bag 10, and preservatives with preservation effects, such as desiccants, humectants, oxygen absorbers, or ethylene removers, can be placed in the second receiving cavity C2 between the inner bag 10 and the outer bag 20. The preservative provides preservation support to the items in the first receiving cavity C1 by transferring gaseous substances (e.g., water vapor, oxygen, or ethylene) through the inner bag 10 (more specifically, the second sheet 2 and the third sheet 3 described later) between the first receiving cavity C1 and the second receiving cavity C2. In addition, the preservative can be taken out and put in through the second opening O2. Therefore, when the preservation effect of the preservative in the second receiving cavity C2 can not meet the usage requirements, it can be taken out and a new preservative can be put in. As a result, the preservation bag can be used for a long time.

[0056] The appropriate preservative can be selected based on the characteristics of the items to be preserved placed in the first cavity C1. For example, if the items to be preserved in the first cavity C1 are moisture-loving items that can be stored for a long time in a humid environment, a humectant can be used as a preservative and placed in the second cavity C2. In this way, the water vapor generated by the humectant can enter the first cavity C1 from the second cavity C2 through the wall of the inner bag 10, providing preservation support for the items. If the items to be preserved in the first cavity C1 are items that will quickly spoil in a humid environment, a desiccant can be used as a preservative and placed in the second cavity C2. In this way, the water vapor in the first cavity C1 can enter the second cavity C2 through the wall of the inner bag 10 (the second sheet 2 and the third sheet 3 described later) and be absorbed by the desiccant, thereby making the first cavity C1 a low-humidity environment and providing preservation support for the items. Additionally, if necessary, desiccants and oxygen absorbers can be placed simultaneously in the second cavity C2 to create a low-humidity and low-oxygen environment in the first cavity C1.

[0057] In this embodiment, at least for the aforementioned gaseous substances that are associated with the preservative, the inner bag 10 has higher permeability than the outer bag 20. As a result, the aforementioned gaseous substances can be easily transferred between the second and first containment spaces, but are difficult to transfer between the second containment space and the external environment due to the obstruction of the outer bag 20, thus helping to extend the shelf life of the preservative.

[0058] For ease of description, a depth direction Dr1, a width direction Dr2, and a thickness direction Dr3 that are perpendicular to each other are defined, wherein the depth direction Dr1 is the depth direction of the first receiving cavity C1, which corresponds to the orientation direction of the first opening O1 and the second opening O2.

[0059] The food storage bag also includes a sealing component capable of closing the second opening O2. In this embodiment, the sealing component is a sealing zipper 30 disposed at the second opening O2.

[0060] The sealing zipper 30 includes two guide rails 6 and a slider 7. The two guide rails 6 are respectively disposed on opposite sides of the outer bag body 20 along the thickness direction Dr3 of the second opening O2 (more specifically, on the fourth side S4 of the first sheet 1 and the fourth side S4 of the fourth sheet 4, described later), and the end portions of the two guide rails 6 are welded together. The slider 7 is slidably engaged with the two guide rails 6 along the width direction Dr2, and by sliding the slider 7, the second opening O2 is switched between an open state and a sealed state. As a result, it is possible to easily remove and insert the preservative from the second opening O2.

[0061] Specifically, both guide rails 6 have a certain degree of flexibility. One guide rail 6 has a linearly extending groove, and the other guide rail 6 has a linearly extending strip that matches the groove. When the user pulls the slider 7 with their finger and slides it along the positive side (arrow side) of the width direction Dr2, the slider 7 presses the two guide rails 6 together along the thickness direction Dr3, thereby engaging the strip into the groove and closing the second opening O2. When the user pulls the slider 7 with their finger and slides it along the negative side (non-arrow side) of the width direction Dr2, the slider 7 pulls the two guide rails 6 apart along the thickness direction Dr3, thereby disengaging the strip from the groove and opening the second opening O2. Since this configuration of the sealing zipper 30 is well known to those skilled in the art, detailed illustrations of the sealing zipper 30, particularly the groove and strip, are omitted and will not be described further.

[0062] In some embodiments, the first opening O1 of the inner bag 10 is located between the two guide rails 6, and based on this design, the first opening O1 can be switched between an open state and a sealed state by sliding the aforementioned slider 7. Specifically, when the inserts and grooves of the two guide rails 6 engage with each other, the inner bag 10 at the first opening O1 (more specifically, the fourth side S4 of the second sheet 2 and the third sheet 3 described later) is pressed towards each other along the thickness direction Dr3 by the two guide rails 6 and / or the outer bag 20 at the two guide rails 6, thereby placing the first opening O1 in a sealed state; when the inserts and grooves of the two guide rails 6 separate from each other, the inner bag 10 at the first opening O1 is no longer pressed by the two guide rails 6 and / or the outer bag 20 at the two guide rails 6, thereby allowing the first opening O1 to be in an open state for easy removal and placement of the preserved items. In a more specific embodiment, the second opening O2 is substantially flush with the first opening O1 in the depth direction Dr1.

[0063] In this embodiment, at least a portion of the outer bag 20 is transparent, allowing the preservative in the second receiving cavity C2 to be observed through the transparent portion of the outer bag 20. Additionally, at least a portion of the inner bag 10 is transparent, allowing the preserved item in the first receiving cavity C1 to be observed through both the transparent portions of the outer and inner bag 20. As a result, the user can easily observe the state of the preservative and the preserved item, allowing for appropriate action if any abnormalities are observed. Furthermore, based on this design, an indicator card that uses color changes to indicate humidity, oxygen content, or other environmental indicators can be placed in the second receiving cavity C2, enabling the user to determine whether the storage environment of the preserved item meets the requirements by observing the color of the indicator card.

[0064] More specifically, the inner bag 10 includes an upper portion P1 and a lower portion P2 arranged sequentially along the depth direction Dr1. The lower portion P2 is formed of a waterproof and breathable PE spunbond nonwoven fabric, providing high breathability to the inner bag 10 and serving as the main passageway for the aforementioned gaseous substances. The upper portion P1 is formed of a first transparent plastic film, providing the aforementioned transparent structure to the inner bag 10 and defining the aforementioned first opening O1. The lower portion P2, defined by the PE spunbond nonwoven fabric, is opaque. The outer bag 20 is substantially entirely formed of a second transparent plastic film.

[0065] The first transparent plastic film can be a PE film, and the second transparent plastic film can be a PE film, a PE-PA blend film, or a PE-PET blend film.

[0066] In this embodiment, the inner bag 10 and the outer bag 20 have a common bottom portion BM, which is opposite to the second opening O2 and the first opening O1 in the depth direction Dr1.

[0067] Please see Figure 3 and Figure 4 This food storage bag can be flattened without any preservatives or food being preserved, resulting in a flat shape perpendicular to the thickness direction Dr3. Therefore, multiple bags can be easily stacked together for storage and transportation.

[0068] Please continue reading Figure 3 and Figure 4 and combined Figure 2When the food storage bag is unfolded, it includes a first sheet 1, a second sheet 2, a third sheet 3, and a fourth sheet 4, all unfolded, and a fifth sheet 5 in a folded state. The fifth sheet 5, the second sheet 2, and the third sheet 3 define an inner bag body 10, the fifth sheet 5, the first sheet 1, and the fourth sheet 4 define an outer bag body 20, and the fifth sheet 5 defines the aforementioned bottom portion BM. The first sheet 1, the second sheet 2, the third sheet 3, and the fourth sheet 4 are stacked sequentially in the thickness direction Dr3, and each has a first side S1 and a second side S2 opposite to each other in the width direction Dr2, and a third side S3 and a fourth side S4 opposite to each other in the depth direction Dr1. The first side S1, the second side S2, and the third side S3 of the first sheet 1 are joined to the first side S1, the second side S2, and the third side S3 of the second sheet 2 via a first joint J1, thereby forming a first bag-shaped body BG1 that can open on the fourth side S4. The first bag-shaped body BG1 defines a portion of the second receiving cavity C2 within itself. The first side S1, the second side S2, and the third side S3 of the third sheet 3 are joined to the first side S1, the second side S2, and the third side S3 of the fourth sheet 4 via a second joint J2, thereby forming a second bag-shaped body BG2 that can open on the fourth side S4. The second bag-shaped body BG2 defines another portion of the second receiving cavity C2 within itself. The aforementioned portion and the aforementioned other portion of the second receiving cavity C2 are separated from each other by the second sheet 2 and the third sheet 3 in the thickness direction Dr3. The first side S1 and the second side S2 of the second sheet 2 and the first side S1 and the second side S2 of the third sheet 3 each have a lower section A2 extending from the junction CC to the third side S3 and an upper section A1 extending from the junction CC to the fourth side S4. The upper sections A1 of the first side S1 and the second side S2 of the second sheet 2 are respectively joined to the upper sections A1 of the first side S1 and the second side S2 of the third sheet 3 via the third joint J3. The lower sections A2 of the first side S1 and the second side S2 of the second sheet 2 are not joined to each other (they can be separated from each other along the thickness direction Dr3). A fifth sheet 5 is folded between the second sheet 2 and the third sheet 3, and the edge of the fifth sheet 5 is connected via a fourth joint J4 to the lower section A2 of the third side S3, the first side S1, and the second side S2 of the second sheet 2, and to the lower section A2 of the third side S3, the first side S1, and the second side S2 of the third sheet 3. Thus, the fifth sheet 5, the second sheet 2, and the third sheet 3 define the inner bag body 10, and the fifth sheet 5, the first sheet 1, and the fourth sheet 4 define the outer bag body 20. Based on this design, the food storage bag can be easily manufactured and is convenient for storage and transportation.

[0069] The aforementioned joints can be thermo-pressed joints or adhesive joints.

[0070] Furthermore, each of the second sheet 2 and the third sheet 3 comprises two parts arranged sequentially along the depth direction Dr1 and joined together, one part being a transparent PE plastic film and the other part being a waterproof and breathable PE spunbond nonwoven fabric. Thus, the second sheet 2 and the third sheet 3 define the aforementioned upper portion P1 and lower portion P2 of the inner bag body 10. The first sheet 1, the fourth sheet 4, and the fifth sheet 5 are all transparent plastic films, such as PE film, PE-PA blend film, or PE-PET blend film. Therefore, even if a small-sized item is covered by the opaque upper portion P1 when it is being moisturized and contained in the first receiving cavity C1, the user can observe the current state of the item through the transparent fifth sheet 5.

Claims

1. A food storage bag, characterized in that, include: The outer bag has a second opening; The inner bag body is located inside the outer bag body and is fixedly connected to the outer bag body, and has a first opening located at the second opening; The inner bag defines a first receiving cavity inside for receiving the item to be preserved, and a second receiving cavity is defined between the inner bag and the outer bag for receiving a preservative. The preservative provides preservation support to the item based on gaseous substances passing through the inner bag between the first and second receiving cavities, and the preservative can be removed and placed through the second opening.

2. The food preservation bag as described in claim 1, characterized in that, For the gaseous substance, the inner bag has higher permeability than the outer bag.

3. The food preservation bag as described in claim 1, characterized in that, It also includes a sealing component capable of closing the second opening.

4. The food preservation bag as described in claim 3, characterized in that, The sealing component is a sealing zipper disposed at the second opening, and the sealing zipper includes: Two guide rails are respectively disposed on the outer bag body on opposite sides of the second opening; A slider is slidably engaged with the two guide rails; The second opening is switched between an open state and a closed state by sliding the slider.

5. The food preservation bag as described in claim 4, characterized in that, The first opening is located between the two guide rails, and based on this, the first opening can be switched between an open state and a closed state by sliding the slider.

6. The food preservation bag as described in claim 1, characterized in that, At least a portion of the outer bag is transparent, and the preservative can be observed through the transparent portion of the outer bag; At least a portion of the inner bag is transparent, and the preserved item can be observed through the transparent portions of the outer bag and the inner bag.

7. The food preservation bag as described in claim 6, characterized in that, The inner bag body includes an upper portion and a lower portion arranged sequentially along the depth direction of the first receiving cavity. The lower portion is formed of waterproof and breathable PE spunbond nonwoven fabric, and the upper portion is formed of a first transparent plastic film. The outer bag is formed of a second transparent plastic film.

8. The food preservation bag as described in claim 7, characterized in that, The first transparent plastic film is a PE film, and the second transparent plastic film is a PE film, a PE-PA blend film, or a PE-PET blend film.

9. The food preservation bag as described in claim 1, characterized in that, The inner bag and the outer bag have a common bottom portion, which is opposite to the second opening and the first opening in the depth direction of the first receiving cavity.

10. The food preservation bag as described in claim 1, characterized in that, The food preservation bag has a flattened state, and the flattened food preservation bag includes: A first sheet, a second sheet, a third sheet, and a fourth sheet are stacked sequentially in the thickness direction. Each sheet has a first side and a second side opposite to each other in the width direction, and a third side and a fourth side opposite to each other in the depth direction of the first receiving cavity. The first side, the second side, and the third side of the first sheet are respectively joined to the first side, the second side, and the third side of the second sheet, thereby forming a first bag-like body that can open on the fourth side. The first bag-like body defines a portion of the second receiving cavity inside. The first side, the second side, and the third side of the third sheet are respectively joined to the first side, the second side, and the third side of the fourth sheet. The three sides are joined to form a second bag-like body that can open on the fourth side. The second bag-like body defines another part of the second receiving cavity inside. The first and second sides of the second sheet and the first and second sides of the third sheet each have a lower section extending from the junction to the third side and an upper section extending from the junction to the fourth side. The upper sections of the first and second sides of the second sheet are joined to the upper sections of the first and second sides of the third sheet, respectively. The lower sections of the first and second sides of the second sheet are not joined to each other. A fifth sheet, folded in half, is disposed between the second and third sheets, and the edge of the fifth sheet connects the lower sections of the third, first, and second sides of the second sheet and the lower sections of the third, first, and second sides of the third sheet. Thus, the fifth, second, and third sheets define the inner bag body, and the fifth, first, and fourth sheets define the outer bag body.

11. The food preservation bag as described in claim 10, characterized in that, The fifth sheet is a transparent structure.

12. A packaged product, characterized in that, include: The food storage bag as described in any one of claims 1 to 11; The preserved items are contained in the first receiving cavity; The preservative is contained in the second receiving cavity.

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