Portable heating multi-cavity bag

Abstract

The invention belongs to the field of food packaging, and discloses a portable heating multi-cavity bag. A first bag layer and a second bag layer are of a multi-layer composite structure of SPET / NY / RPE or PET / AL / NY / RPE, and an interlayer is of a multi-layer composite structure of RPE / NY / AL / NY / RPE or RPE / NY / RPE; the RPE film layer of the first bag layer and the four edges of the RPE film layer on one side of the interlayer are subjected to heat sealing, the first bag layer and the middle of the interlayer are also subjected to heat sealing, and the RPE film layer of the second bag layer and the four edges of the RPE film layer on the other side of the interlayer are subjected to heat sealing; a first cavity is formed in the upper half area between the first bag layer and the interlayer, a second cavity is formed in the lower half area between the first bag layer and the interlayer, and a third cavity is formed between the second bag layer and the interlayer. The multi-cavity bag is a soft plastic package, and compared with an existing self-heating hard plastic package, the multi-cavity bag is flexible and more convenient to carry by a consumer; and the packaging bag has the functions of puncture resistance, falling resistance, high barrier and high-temperature cooking resistance, so that the contents can be stably stored for a long time.

Description

Technical Field

[0001] This invention belongs to the field of food packaging, specifically relating to a portable heated multi-chamber bag. Background Technology

[0002] Currently, most self-heating containers are packaged in rigid plastic, which is not only bulky but also has poor shape retention, making them difficult to carry. Summary of the Invention

[0003] In view of the content in the background art, the present invention provides a portable heated multi-chamber bag, which is a flexible plastic packaging, comprising a first bag layer, a second bag layer and a separator; the first bag layer and the second bag layer are multi-layer composite structures of SPET / NY / RPE or PET / AL / NY / RPE, and the separator is a multi-layer composite structure of RPE / NY / AL / NY / RPE or RPE / NY / RPE.

[0004] The RPE film layer of the first bag layer and the RPE film layer of the separator are heat-sealed on all four sides. The middle of the first bag layer and the separator are also heat-sealed. The RPE film layer of the second bag layer and the RPE film layer of the separator are heat-sealed on all four sides.

[0005] The upper half of the area between the first bag layer and the partition layer forms the first chamber, the lower half of the area forms the second chamber, and the area between the second bag layer and the partition layer forms the third chamber.

[0006] Data shows that the puncture resistance of a single-layer NY bag can reach 8-12N. Adding NY bags on both sides of the partition can achieve better puncture resistance. Double-layer NY bags can reach over 25N. For sharper contents, it can more effectively prevent the multi-chamber bag from being punctured, and it also has better drop resistance.

[0007] Preferably, the SPET is a high-barrier PET, which is PET coated with ALOx or SiOx to ensure that the barrier performance of the multi-chamber bag can reach OTR and WTR ≤0.5, which can effectively improve the shelf life of the contents;

[0008] The RPE is a retortable PE. Normally, the melting point of PE is between 100-130℃. RPE can be modified by crosslinking or copolymerization to increase the melting point to 130-150℃, or even >400℃, and has better heat resistance, thus achieving the ability to be retorted. At the same time, PE has better low-temperature resistance than CPP, especially in environments below -18℃.

[0009] Furthermore, the second chamber is a heating chamber, and a filling port is also provided on the side of the second chamber. The filling port is sealed with a seal strip, which facilitates the downstream factory to fill the second chamber with a heating material of CaCO3 type.

[0010] Furthermore, the first chamber is a liquid contents chamber for filling soup or sauce. The first bag layer also has multiple venting micro-holes in the first chamber. An insert is glued to the venting micro-holes of the first bag layer by adhesive and covers all the venting micro-holes. In this way, the heat generated when the soup or sauce in the first chamber is heated can be discharged through the venting micro-holes by breaking the adhesive and the insert, preventing the bag from bursting.

[0011] Preferably, the insert is made of CPP material.

[0012] Preferably, the third chamber is a solid contents chamber used to store staple foods such as rice.

[0013] Through the above technical solutions, the present invention has at least the following beneficial effects:

[0014] The portable heated multi-chamber bag described in this application is a flexible plastic packaging. Compared to existing self-heating rigid plastic packaging, it is more flexible and easier for consumers to carry. Furthermore, through its composite structure design, the multi-chamber bag is puncture-resistant, drop-resistant, provides high barrier properties, and is resistant to high-temperature cooking, ensuring stable long-term storage of the contents. The venting design via inserts prevents the bag from swelling during high-temperature heating. Attached Figure Description

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0016] Figure 1 This is a front view of the portable heated multi-chamber bag described in the embodiments of this application;

[0017] Figure 2 for Figure 1 Side sectional view. Detailed Implementation

[0018] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships are for illustrative purposes only and should not be construed as limiting this patent. If terms such as "first" and "second" are used for descriptive purposes only, they should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of the stated features. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0019] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0020] refer to Figure 1 and Figure 2 A portable heated multi-chamber bag includes a first bag layer 1, a second bag layer 2, and a partition layer 3; the first bag layer 1 and the second bag layer 2 are multi-layer composite structures of SPET / NY / RPE or PET / AL / NY / RPE, and the partition layer 3 is a multi-layer composite structure of RPE / NY / AL / NY / RPE or RPE / NY / RPE.

[0021] The RPE film layer of the first bag layer 1 is heat-sealed on all four sides of one side of the RPE film layer of the separator 3, and the middle of the first bag layer 1 and the separator 3 is also heat-sealed. The RPE film layer of the second bag layer 2 is heat-sealed on all four sides of the other side of the RPE film layer of the separator 3.

[0022] The upper half of the area between the first bag layer 1 and the partition layer 3 forms the first chamber 201, the lower half of the area forms the second chamber 202, and the second bag layer 2 and the partition layer 3 form the third chamber 203.

[0023] The preferred membrane structure in this embodiment is as follows: the first bag layer 1 and the second bag layer 2 are both multi-layer composite structures of SPET / NY / RPE, and the separator 3 is a multi-layer composite structure of RPE / NY / AL / NY / RPE. According to the data, the puncture resistance of a single layer of NY can reach 8-12N. Setting NY on both sides of the separator 3 can achieve better puncture resistance. The double layer of NY can reach more than 25N. For sharper contents, it can more effectively prevent the multi-chamber bag from being punctured, and the drop resistance is also better.

[0024] The SPET is a high-barrier PET, which is PET coated with ALOx or SiOx to ensure that the barrier performance of the multi-chamber bag can reach OTR and WTR ≤0.5, which can effectively improve the shelf life of the contents.

[0025] The RPE is a retortable PE. Normally, the melting point of PE is between 100-130℃. RPE can be modified by crosslinking or copolymerization to increase the melting point to 130-150℃, or even >400℃, and has better heat resistance, thus achieving the ability to be retorted. At the same time, PE has better low-temperature resistance than CPP, especially in environments below -18℃.

[0026] The second chamber 202 is a heating chamber, see reference. Figure 1 The second chamber 202 also has a filling port 6 on its side, which is sealed with a seal 5. The filling port 6 facilitates the downstream factory to fill the second chamber 202 with a CaCO3-type heating material.

[0027] The first chamber 201 is a liquid contents chamber, used for filling soup or sauce, see reference. Figure 2 The first bag layer 1 also has multiple venting micro-holes 101 in the first chamber 201. An insert 4 is glued to the venting micro-holes 101 of the first bag layer 1 using adhesive, covering all the venting micro-holes 101. In this way, the heat generated when the soup or sauce in the first chamber 201 is heated can be released through the venting micro-holes 101, breaking through the adhesive and the insert 4, preventing the bag from bursting. The insert 4 is a CPP insert 4.

[0028] refer to Figure 2 The third chamber 203 is a solid contents chamber used to store staple foods such as rice.

[0029] The aforementioned portable heated multi-chamber bag is a flexible plastic packaging, which is more flexible and easier for consumers to carry compared to existing self-heating rigid plastic packaging. It also features puncture resistance, drop resistance, high barrier properties, and resistance to high-temperature cooking, ensuring long-term stable storage of the contents.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Based on the present invention, and through the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A portable heated multi-chamber bag, characterized in that: It includes a first bag layer (1), a second bag layer (2), and a separator (3); the first bag layer (1) and the second bag layer (2) are multi-layer composite structures of SPET / NY / RPE or PET / AL / NY / RPE, and the separator (3) is a multi-layer composite structure of RPE / NY / AL / NY / RPE or RPE / NY / RPE. The RPE film layer of the first bag layer (1) and the RPE film layer of the separator (3) are heat-sealed on all four sides. The middle part of the first bag layer (1) and the separator (3) is also heat-sealed. The RPE film layer of the second bag layer (2) and the RPE film layer of the separator (3) are heat-sealed on all four sides. The upper half of the area between the first bag layer (1) and the partition layer (3) forms the first chamber (201), the lower half of the area forms the second chamber (202), and the third chamber (203) is formed between the second bag layer (2) and the partition layer (3).

2. The portable heated multi-chamber bag according to claim 1, characterized in that: The SPET is a high-barrier PET, which is PET coated with ALOx or SiOx; the RPE is a retortable PE.

3. A portable heated multi-chamber bag according to claim 1 or 2, characterized in that: The second chamber (202) is a heating chamber, and a filling port (6) is also opened on the side of the second chamber (202), and the filling port (6) is sealed with a seal (5).

4. A portable heated multi-chamber bag according to claim 1 or 2, characterized in that: The first chamber (201) is a liquid contents chamber. The first bag layer (1) also has multiple exhaust microholes (101) in the first chamber (201). An insert (4) is glued to the exhaust microholes (101) of the first bag layer (1) by adhesive and covers all the exhaust microholes (101).

5. A portable heated multi-chamber bag according to claim 4, characterized in that: The insert (4) is a CPP insert (4).

6. A portable heated multi-chamber bag according to claim 1 or 2, characterized in that: The third chamber (203) is a solid contents chamber.

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