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CN-122009677-A - Split combined self-heating liquid packaging system and preparation method thereof

CN122009677ACN 122009677 ACN122009677 ACN 122009677ACN-122009677-A

Abstract

The invention belongs to the technical field of food packaging, and discloses a split combined self-heating liquid packaging system and a preparation method thereof, wherein the split combined self-heating liquid packaging system comprises an outer packaging bag body, an inner packaging bag body, a heating component, a water outlet suction nozzle component, a reaction water injection port and a pressure release structure, and the preparation method comprises the following steps of S1, respectively prefabricating the outer packaging bag body and the inner packaging bag body; the method comprises the steps of S2, arranging a reaction water injection port in the side part or the upper part of an outer packaging bag body, sealing and installing a water outlet suction nozzle assembly at the position, close to a bag opening, of the upper part of the outer packaging bag body, S3, arranging an inner packaging bag body into the outer packaging bag body, fixing the inner packaging bag body on the upper part of the outer packaging bag body in a top transverse heat sealing or side vertical heat sealing mode to form an independent heating cavity, S4, fixedly installing a heating assembly at the bottom of the heating cavity, and S5, integrally packaging the outer packaging bag body. The invention has even and high-efficiency heating and can prevent the outer packaging bag from cracking and exploding.

Inventors

  • ZHONG CHENGHUA

Assignees

  • 昆山瑞盛贸易有限公司

Dates

Publication Date
20260512
Application Date
20260413

Claims (9)

  1. 1. The split combined self-heating liquid packaging system is characterized by comprising an outer packaging bag body (1), an inner packaging bag body (2), a heating component (3), a water outlet suction nozzle component (5), a reaction water injection port (6) and a pressure release structure (7), wherein the inner packaging bag body (2) is prepared from PE material, PP material or a composite film with the temperature resistant of 100 ℃, the inner packaging bag body (2) is arranged in the upper area inside the outer packaging bag body (1), an independent heating cavity (4) is formed between the inner packaging bag body (2) and the outer packaging bag body (1) in a matched mode, the outer surface of the inner packaging bag body (2) is exposed in the heating cavity (4) and the inner space of the inner packaging bag body (2) is isolated from the heating cavity (4), and the water outlet suction nozzle component (5) is communicated with the inner packaging bag body (2); The heating component (3) is fixed at the bottom of the heating cavity (4), the reaction water injection port (6) is communicated with the heating cavity (4), the pressure release structure (7) is communicated with the heating cavity (4) and is used for releasing steam through the pressure release structure (7) to prevent the outer packaging bag body (1) from cracking and exploding, the reaction water injection port (6) is of an openable and repeatedly sealable liquid injection structure and is used for injecting reaction water into the heating cavity (4) and sealing after injection, then the reaction water is enabled to generate steam after being contacted with the heating component (3) and conduct cladding heating on the inner packaging bag body (2), and the liquid injection structure is of a self-sealing zipper structure, a bottle cap structure or a one-way liquid inlet valve structure.
  2. 2. The split combined type self-heating liquid packaging system according to claim 1, wherein the inner packaging bag body (2) is suspended and fixed on the upper part of the inner side of the outer packaging bag body (1) through a top transverse heat seal mode or a side vertical heat seal mode.
  3. 3. The split combined self-heating liquid packaging system according to claim 1, wherein the heating component (3) is a composite self-heating reaction composition comprising at least two of calcium oxide, iron powder, aluminum powder and sodium carbonate.
  4. 4. The split combined type self-heating liquid packaging system according to claim 1, wherein the transverse section of the outer packaging bag body (1) is of a trapezoid structure with a wide bottom and a narrow top, so that the outer packaging bag body (1) keeps upright and stable in the use process, or a three-dimensional supporting structure is arranged at the bottom of the outer packaging bag body (1) and is a K-shaped supporting seat, a trapezoid supporting seat, a cylindrical supporting seat or a deployable supporting leg structure, so that the bag body can be upright and stable on any plane.
  5. 5. The split combined self-heating liquid packaging system according to claim 1, wherein the liquid injection structure is a one-way liquid inlet valve structure, and the pressure threshold value of the one-way liquid inlet valve structure when opened is 0.15-0.2MPa.
  6. 6. The split combined self-heating liquid packaging system according to claim 1, wherein the water outlet suction nozzle assembly (5) is mounted on the top surface or the side surface of the outer packaging bag body (1) in a sealing manner, the water outlet suction nozzle assembly (5) is provided with a water inlet and a drinking port, and the water inlet and the drinking port are both provided with openable sealing cover structures.
  7. 7. The split combined type self-heating liquid packaging system according to claim 1, wherein the reaction water injection port (6) is arranged at the side part or the upper part of the outer packaging bag body (1), and the opening size of the reaction water injection port (6) is larger than 15mm.
  8. 8. A method of making a split, modular, self-heating liquid packaging system as defined in any one of claims 1-7, comprising the steps of: S1, respectively prefabricating an outer packaging bag body (1) and an inner packaging bag body (2), wherein the outer packaging bag body (1) is prepared by adopting a PET/AL/PE aluminum-plastic composite film, and the volume of the inner packaging bag body (2) is 40-60% of that of the outer packaging bag body (1); S2, a reaction water injection port (6) is formed in the side part or the upper area of the outer packaging bag body (1), and a water outlet suction nozzle assembly (5) is arranged at the position, close to the bag mouth, of the upper part of the outer packaging bag body (1) in a sealing manner; S3, placing the inner packaging bag body (2) into the outer packaging bag body (1), and fixing the inner packaging bag body (2) on the upper part of the outer packaging bag body (1) in a top transverse heat sealing or side vertical heat sealing mode to form an independent heating cavity (4); S4, fixedly mounting a heating component (3) at the bottom of the heating cavity (4), wherein the heating component (3) is a composite self-heating reaction composition containing at least two components of calcium oxide, iron powder, aluminum powder and sodium carbonate; S5, integrally packaging the outer packaging bag body (1), and then performing seal detection to ensure that the product is qualified.
  9. 9. The split, self-heating liquid packaging system of claim 8, wherein the seal detection means is as follows: 1) Sealing and detecting the inner packaging bag body (2), namely introducing 0.1-0.2MPa of compressed air into the inner packaging bag body (2) through a water outlet suction nozzle assembly (5), immersing the inner bag area into water, observing no bubbles generated within 30 seconds, and judging that the inner bag is sealed to be qualified; 2) And (3) sealing and detecting the outer packaging bag body (1), namely introducing 0.1-0.12MPa of compressed air into the heating cavity (4), immersing the outer packaging bag body (1), the water outlet suction nozzle assembly (5), the reaction water injection port (6) and the pressure release structure (7) in water, observing that no bubbles are generated within 30 seconds, and judging that the outer packaging bag and the related structures are sealed and qualified.

Description

Split combined self-heating liquid packaging system and preparation method thereof Technical Field The invention belongs to the technical field of food packaging, and particularly relates to a split combined self-heating liquid packaging system and a preparation method thereof, which are particularly suitable for outdoor travel, emergency disaster relief, military operation and other scenes without external heat sources and have industrial standard industrialization potential. Background The self-heating liquid packaging technology is a core food packaging scheme under the scene without an external heat source, and a plurality of pain points which cannot be solved in the prior art exist: 1. Most of heating modes are contact type or local steam heating, heating is uneven, efficiency is low, and no specific steam cladding type heating structure design exists; 2. The isolation structure is simple, the heating reaction product is easy to contact the inner bag to cause food pollution, and the special physical isolation structure design is lacking; 3. The pressure release structure is imperfect in design, has no definite structural form and position limitation, cannot reliably release steam, and is easy to cause the rupture and explosion of the bag body; 4. the opening size of the reaction water injection port is small, the position design is unreasonable, and the problems of slow injection, reaction delay and the like are caused; 5. The inner bag material has high temperature deformation and leakage risk. Disclosure of Invention The present invention is directed to a split combined self-heating liquid packaging system and a method for manufacturing the same, which solve at least one of the above problems in the prior art. In order to achieve the above purpose, the present invention adopts the following technical scheme: On one hand, the invention provides a split combined self-heating liquid packaging system, which comprises an outer packaging bag body, an inner packaging bag body, a heating component, a water outlet suction nozzle component, a reaction water injection port and a pressure relief structure, wherein the inner packaging bag body is prepared from a PE material, a PP material or a composite film with the temperature resistance of 100 ℃, the inner packaging bag body is arranged in the upper area of the inner part of the outer packaging bag body, an independent heating cavity is formed between the inner packaging bag body and the outer packaging bag body in a matched manner, the outer surface of the inner packaging bag body is exposed in the heating cavity, and the inner space of the inner packaging bag body is mutually isolated from the heating cavity; The heating component is fixed at the bottom of the heating cavity, the reaction water injection port is communicated with the heating cavity, the pressure relief structure is communicated with the heating cavity and is used for releasing steam through the pressure relief structure to prevent the outer packaging bag body from being broken and exploded, the reaction water injection port is of an openable and repeatedly sealable liquid injection structure and is used for injecting reaction water into the heating cavity and realizing sealing after injection, then the reaction water is enabled to generate steam after contacting with the heating component and carry out cladding heating on the inner packaging bag body, and the liquid injection structure is of a self-sealing zipper structure, a bottle cap structure or a one-way liquid inlet valve structure. As a preferable technical scheme in the invention, the inner packaging bag body is hung and fixed on the upper part of the inner side of the outer packaging bag body in a top transverse heat sealing mode or a side vertical heat sealing mode. As a preferable technical scheme in the invention, the heating component is a composite self-heating reaction composition, and the composite self-heating reaction composition comprises at least two of calcium oxide, iron powder, aluminum powder and sodium carbonate. As a preferable technical scheme in the invention, the transverse section of the outer packaging bag body is of a trapezoid structure with wide bottom and narrow top, so that the outer packaging bag body is kept upright and stable in the use process, or a three-dimensional supporting structure is arranged at the bottom of the outer packaging bag body and is a K-shaped supporting seat, a trapezoid supporting seat, a cylindrical supporting seat or a deployable supporting leg structure, so that the bag body can be stably upright on any plane. As a preferable technical scheme in the invention, the liquid injection structure is a one-way liquid inlet valve structure, and the pressure threshold value of the one-way liquid inlet valve structure when opened is 0.15-0.2MPa. As a preferable technical scheme in the invention, the water outlet suction nozzle assembly is hermetically arranged on the top surface or the si