Fresh-keeping ice bag

Abstract

The utility model discloses a fresh-keeping ice bag which is a closed bag-shaped body and sequentially comprises a non-woven fabric layer, a freezing medium layer, a polyethylene layer, a pearl wool layer and an aluminum film layer from inside to outside. Wherein a first inner cavity is formed by the periphery of the outer side of the polyethylene layer and the periphery of the inner side of the aluminum film layer in a heat sealing mode, and the pearl wool layer is arranged in the first inner cavity; the periphery of the inner side of the polyethylene layer and the periphery of the inner side of the non-woven fabric layer form a second inner cavity in a heat sealing mode, and the freezing medium layer is arranged in the second inner cavity. The utility model has the following beneficial effects: (1) the heat-preservation and cold-holding performance is good, and the heat-preservation and cold-storage performance is improved by more than 30% compared with the original performance; and (2) the ice bag is soft and elastic, can protect refrigerated goods from being damaged, and can keep a larger contact area between the ice bag and goods to be preserved.

Description

Technical Field

[0001] The utility model relates to an ice bag for freshness preservation. Background Art

[0002] China is a major producer and consumer of agricultural products. With the improvement of the living standards and consumption capabilities of urban and rural residents, there are higher requirements for the freshness, nutritional value, and safety of agricultural products.

[0003] The freezing and refrigeration methods of agricultural products can be divided into the following four categories according to the storage temperature: freshness preservation (2 - 8°C), chilled fresh (0 - -5°C), freezing (-10 - -18°C), and deep freezing (-20 - -45°C). In the field of cold chain transportation, in order to ensure the freshness and nutritional value of products during transportation, ice bags are generally used to refrigerate and preserve the goods.

[0004] Chinese utility model patent CN 206094697U discloses a non-condensing water ice bag, which includes a freezing medium (1), a bag body (2), and a composite material bag (3); the bag body (2) wraps the freezing medium (1); after the bag body (2) wraps the freezing medium (1), it is placed into the composite material bag (3); the composite material bag (3) is made of non-woven fabric, non-woven fabric special glue, and PE film, and has strong hygroscopicity. However, the above-mentioned ice bag has the following deficiencies: (1) Prepared with PE or PE plus non-woven fabric, resulting in general freshness preservation and cold holding performance; (2) When placed, the contact area between the ice bag and the goods to be preserved is limited, resulting in too low temperature in some areas of the goods and too high temperature in some areas, affecting the freshness preservation quality. Summary of the Utility Model

[0005] Purpose of the utility model: The utility model makes improvements to the problems existing in the above-mentioned prior art, that is, the utility model discloses an ice bag for freshness preservation.

[0006] Technical solution: An ice bag for freshness preservation, the ice bag for freshness preservation is a closed bag-shaped body, and the ice bag for freshness preservation is composed of a non-woven fabric layer, a freezing medium layer, a polyethylene layer, an EPE layer, and an aluminum film layer from the inside to the outside, where:

[0007] The four weeks on the outside of the polyethylene layer and the four weeks on the inside of the aluminum film layer form a first inner cavity in a heat-sealing manner, and the EPE layer is placed in the first inner cavity;

[0008] The four weeks on the inside of the polyethylene layer and the four weeks on the inside of the non-woven fabric layer form a second inner cavity in a heat-sealing manner, and the freezing medium layer is placed in the second inner cavity.

[0009] Further, the freezing medium layer is a phenolic foam resin layer, in which a plurality of micropores are distributed. The total volume of the micropores accounts for 60%-69% of the total volume of the phenolic foam resin layer, and the micropores are filled with a mixture of water and propylene glycol.

[0010] Furthermore, the aperture of the micropores is 50-100 microns, and the micropores are uniformly distributed in the phenolic foam resin layer.

[0011] Furthermore, the volume ratio of water to propylene glycol filled in the micropores is 1:1 or 2:8.

[0012] Further, the non-woven fabric layer and the polyethylene layer are self-isolated into a plurality of ice grid bags through criss-cross heat-sealing lines, and the freezing medium layer is uniformly distributed in the ice grid bags.

[0013] Further, rounded chamfers are provided at the four corners of the heat-sealed connection between the polyethylene layer and the non-woven fabric layer.

[0014] Further, a nylon fabric layer is also provided on the side of the non-woven fabric layer away from the freezing medium layer.

[0015] Beneficial effects: An ice bag for freshness preservation disclosed by the present utility model has the following beneficial effects:

[0016] (1) It has good heat preservation and cold holding performance, and the heat preservation and cold storage performance is improved by more than 30% compared with the original performance;

[0017] (2) It is soft and elastic, can protect refrigerated items from damage, and can keep a large contact area between the ice bag and the goods to be preserved. Description of the drawings

[0018] Figure 1 It is a schematic structural diagram of an ice bag for freshness preservation disclosed in an embodiment of the present utility model.

[0019] Figure 2 It is a schematic structural diagram of an ice bag for freshness preservation disclosed in another embodiment of the present utility model.

[0020] Wherein:

[0021] 1 - Non-woven fabric layer 2 - Freezing medium layer 3 - Polyethylene layer 4 - Pearl cotton layer 5 - Aluminum film layer 10 - Heat-sealing line 20 - Ice tray bag Specific embodiments

[0022] The following details the specific embodiments of the present utility model.

[0023] The "range" disclosed by the present utility model is defined in the form of a lower limit and an upper limit. A given range is defined by selecting a lower limit and an upper limit, and the selected lower limit and upper limit define the boundary of a specific range. The range defined in this way can include the end values or not include the end values, and can be combined arbitrarily, that is, any lower limit can be combined with any upper limit to form a range. For example, if a range of 10 to 50 is listed for a specific parameter, ranges of 10 to 40 and 20 to 50 are also contemplated. In addition, if the minimum range values 1 and 2 are listed, and if the maximum range values 3, 4, and 5 are listed, then the following ranges are all contemplated: 1 to 3, 1 to 4, 1 to 5, 2 to 3, 2 to 4, and 2 to 5. In this application, unless otherwise stated, the numerical range "a to b" represents an abbreviated representation of any real number combination between a and b, where a and b are both real numbers. For example, the numerical range "0 to 5" means that all real numbers between "0 to 5" have been fully listed herein, and "0 to 5" is only an abbreviated representation of these numerical combinations.

[0024] If there is no special instruction, all embodiments and optional embodiments of this application can be combined with each other to form a new technical solution.

[0025] If there is no special instruction, all technical features and optional technical features of this application can be combined with each other to form a new technical solution.

[0026] If there is no special instruction, all steps of this application can be carried out sequentially or randomly, and preferably sequentially. For example, the method includes steps (a) and (b), which means that the method can include steps (a) and (b) carried out sequentially, or can also include steps (b) and (a) carried out sequentially. For example, it is mentioned that the method may further include step (c), which means that step (c) can be added to the method in any order. For example, the method can include steps (a), (b), and (c), or can also include steps (a), (c), and (b), or can also include steps (c), (a), and (b), etc.

[0027] If there is no special instruction, the "including" and "containing" mentioned in this application mean open-ended, and can also be closed-ended. For example, the "including" and "containing" can mean that other components not listed can also be included or contained, or can only include or contain the listed components.

[0028] If there is no special instruction, the reaction is carried out under normal temperature and normal pressure conditions.

[0029] If there is no special instruction, all parts or percentages are parts by weight or percentages by weight.

[0030] In the present utility model, all the substances used are known substances, which can be purchased or synthesized by known methods.

[0031] In the present utility model, all the devices or equipment used are conventional devices or equipment known in the field and can be purchased.

[0032] Embodiment 1

[0033] As Figure 1-2 shown, an ice bag for freshness preservation, the ice bag for freshness preservation is a closed bag-shaped body, and the ice bag for freshness preservation is successively composed of a non-woven fabric layer 1, a freezing medium layer 2, a polyethylene layer 3, an EPE layer 4 and an aluminum film layer 5 from inside to outside, wherein:

[0034] The four peripheries on the outer side of the polyethylene layer 3 and the four peripheries on the inner side of the aluminum film layer 5 form a first inner cavity in a heat-sealing manner, and the EPE layer 4 is placed in the first inner cavity;

[0035] The four peripheries on the inner side of the polyethylene layer 3 and the four peripheries on the inner side of the non-woven fabric layer 1 form a second inner cavity in a heat-sealing manner, and the freezing medium layer 2 is placed in the second inner cavity.

[0036] Further, the freezing medium layer 2 is a phenolic foam resin layer, and a plurality of micropores are distributed in the phenolic foam resin layer. The total volume of the micropores accounts for 65% of the total volume of the phenolic foam resin layer, and a mixture of water and propylene glycol is filled in the micropores.

[0037] Furthermore, the aperture of the micropores is 75 microns, and the micropores are uniformly distributed in the phenolic foam resin layer.

[0038] Furthermore, the volume ratio of water to propylene glycol filled in the micropores is 1:1.

[0039] Further, in another embodiment, the non-woven fabric layer 1 and the polyethylene layer 3 are separated into a plurality of ice grid bags 20 by criss-cross heat-sealing lines 10, and the freezing medium layer 2 is uniformly distributed in the ice grid bags 20.

[0040] Further, arc-shaped chamfers are provided at the four corners of the heat-sealed connection between the polyethylene layer 3 and the non-woven fabric layer 1.

[0041] Further, a nylon cloth layer is further provided on the side of the non-woven fabric layer 1 away from the freezing medium layer 2. The nylon cloth layer is used for absorbing condensed water.

[0042] The preparation method of the above-mentioned ice bag for freshness preservation includes the following steps

[0043] Step 1: First, the aluminum film and the pearl cotton are compounded by heat sealing to obtain an aluminum film - pearl cotton composite material, and then the aluminum film - pearl cotton composite material and polyethylene are compounded by heat sealing to form a multi - layer heat - insulating and heat - preserving film (i.e., forming a structure of polyethylene layer 3 - pearl cotton layer 4 - aluminum film layer 5);

[0044] Step 2: The multi - layer heat - insulating and heat - preserving film obtained in Step 1 and the non - woven fabric are heat - sealed to form a semi - sealed open bag, then a freezing medium is added into it, and then it is heat - sealed to form a sealed fresh - keeping ice bag.

[0045] Furthermore, the non - woven fabric layer 1 and the polyethylene layer 3 are isolated from each other into a plurality of ice - grid bags 20 by criss - cross heat - sealing lines 10, and the freezing medium layer 2 is evenly distributed in the ice - grid bags 20.

[0046] Furthermore, on the side of the non - woven fabric layer 1 away from the freezing medium layer 2, a nylon cloth layer for watering is also provided.

[0047] When in use, a layer of fresh - keeping ice bags can be laid on the ground, with the aluminum film layer 5 on the outermost side. The food to be preserved is laid on the non - woven fabric layer 1, and then another layer of fresh - keeping ice bags is laid on the food, with the aluminum film layer 5 on the outermost side. In this way, the food can be in full contact with the fresh - keeping ice bags, and the duration of heat - preservation and cold - storage can be extended.

[0048] Of course, if the food to be preserved is less or has a small volume, it can be wrapped with a fresh - keeping ice bag (with the aluminum film layer 5 on the outermost side) to extend the duration of heat - preservation and cold - storage of the food.

[0049] Embodiment 2

[0050] A fresh - keeping ice bag, which is a closed bag - like body. The fresh - keeping ice bag is composed of a non - woven fabric layer 1, a freezing medium layer 2, a polyethylene layer 3, a pearl cotton layer 4, and an aluminum film layer 5 from the inside to the outside, where:

[0051] The four - week outer side of the polyethylene layer 3 and the four - week inner side of the aluminum film layer 5 form a first inner cavity by heat - sealing, and the pearl cotton layer 4 is placed in the first inner cavity;

[0052] The four - week inner side of the polyethylene layer 3 and the four - week inner side of the non - woven fabric layer 1 form a second inner cavity by heat - sealing, and the freezing medium layer 2 is placed in the second inner cavity.

[0053] Furthermore, the freezing medium layer 2 is a phenolic foam resin layer. A plurality of micropores are distributed in the phenolic foam resin layer, and the total volume of the micropores accounts for 60% of the total volume of the phenolic foam resin layer. A mixture of water and propylene glycol is filled in the micropores.

[0054] Further, the pore diameter of the micropores is 50 microns, and the micropores are uniformly distributed in the phenolic foam resin layer.

[0055] Further, the volume ratio of water to propylene glycol filled in the micropores is 1:1.

[0056] Further, in another embodiment, the non-woven fabric layer 1 and the polyethylene layer 3 are separated into a plurality of ice grid bags 20 by criss-cross heat-sealing lines 10, and the freezing medium layer 2 is uniformly distributed in the ice grid bags 20.

[0057] Further, rounded chamfers are provided at the four corners of the heat-sealed connection between the polyethylene layer 3 and the non-woven fabric layer 1.

[0058] Further, a nylon cloth layer is provided on the side of the non-woven fabric layer 1 away from the freezing medium layer 2. The nylon cloth layer is used to absorb condensed water.

[0059] Embodiment 3

[0060] An ice bag for freshness preservation, the ice bag for freshness preservation is a closed bag-shaped body, and the ice bag for freshness preservation sequentially includes a non-woven fabric layer 1, a freezing medium layer 2, a polyethylene layer 3, an EPE layer 4 and an aluminum film layer 5 from the inside to the outside, wherein:

[0061] The periphery of the outside of the polyethylene layer 3 and the periphery of the inside of the aluminum film layer 5 form a first inner cavity in a heat-sealed manner, and the EPE layer 4 is placed in the first inner cavity;

[0062] The periphery of the inside of the polyethylene layer 3 and the periphery of the inside of the non-woven fabric layer 1 form a second inner cavity in a heat-sealed manner, and the freezing medium layer 2 is placed in the second inner cavity.

[0063] Further, the freezing medium layer 2 is a phenolic foam resin layer, and a plurality of micropores are distributed in the phenolic foam resin layer. The total volume of the micropores accounts for 69% of the total volume of the phenolic foam resin layer, and the micropores are filled with a mixture of water and propylene glycol.

[0064] Further, the pore diameter of the micropores is 100 microns, and the micropores are uniformly distributed in the phenolic foam resin layer.

[0065] Further, the volume ratio of water to propylene glycol filled in the micropores is 2:8.

[0066] Further, the non-woven fabric layer 1 and the polyethylene layer 3 are separated into a plurality of ice grid bags 20 by criss-cross heat-sealing lines 10, and the freezing medium layer 2 is uniformly distributed in the ice grid bags 20.

[0067] Furthermore, rounded chamfers are provided at all four corners of the heat-sealed connection between the polyethylene layer 3 and the non-woven fabric layer 1.

[0068] Furthermore, a nylon fabric layer is further provided on the side of the non-woven fabric layer 1 away from the freezing medium layer 2. The nylon fabric layer is used to absorb condensed water.

[0069] The above has made a detailed description of the embodiments of the present invention. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. An ice bag for freshness preservation, characterized in that, The ice bag for preservation is a closed bag-shaped body. The ice bag for preservation consists of a non-woven fabric layer, a freezing medium layer, a polyethylene layer, an EPE layer and an aluminum film layer from the inside to the outside. Among them: The four sides of the outside of the polyethylene layer and the four sides of the inside of the aluminum film layer form a first inner cavity in a heat-sealing manner, and the EPE layer is placed in the first inner cavity; The four sides of the inside of the polyethylene layer and the four sides of the inside of the non-woven fabric layer form a second inner cavity in a heat-sealing manner, and the freezing medium layer is placed in the second inner cavity; The freezing medium layer is a phenolic foam resin layer, and a plurality of micropores are distributed in the phenolic foam resin layer.

2. The ice bag for freshness preservation according to claim 1, characterized in that, The aperture of the micropores is 50-100 microns, and the micropores are evenly distributed in the phenolic foam resin layer.

3. The ice bag for freshness preservation according to claim 1, characterized in that, The non-woven fabric layer and the polyethylene layer are separated into a plurality of ice grid bags by criss-cross heat-sealing lines, and the freezing medium layer is evenly distributed in the ice grid bags.

4. The ice bag for freshness preservation according to claim 1, wherein, Arc-shaped chamfers are provided at the four corners of the heat-sealed connection between the polyethylene layer and the non-woven fabric layer.

5. An ice pack for freshness preservation according to claim 1, characterized in that, A nylon cloth layer is further provided on the side of the non-woven fabric layer away from the freezing medium layer.

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