▎ 摘　　要

NOVELTY - Preparing multi-component cold chain lunch box partitioned temperature-controlled packaging for microwave reheating comprises (1) preparing heating zone film liquid, (i) adding polyethylene terephthalate particles into obtained the mixed solution, stirring to obtain a first heating zone film liquid; (ii) and mixing obtained liquid A and obtained liquid B, ultrasonically dispersing and heating in a water bath to obtain second heating zone film liquid; (iii) taking sodium carboxymethyl cellulose and dissolving in deionized water for heating in a water bath, adding shielding material and stirring, and heating until the solution is uniform to obtain third heating zone film liquid, (2) surface coating of multi-component cold chain box lunch packaging film liquid, combining with the target temperature required by the corresponding components, determining the shape zone range and thickness of the film liquid required in the second fixing step. USE - The method is useful for preparing multi-component cold chain lunch box partitioned temperature-controlled packaging for microwave reheating ADVANTAGE - The method solves problems of uneven temperature distribution, unstable quality change and dry taste due to different dielectric constants of each component after microwave reheating of multi-component cold chain lunch boxes, and improves heating effect and food quality, and improves the eating experience of box lunch. DETAILED DESCRIPTION - Preparing multi-component cold chain lunch box partitioned temperature-controlled packaging for microwave reheating comprises (1) preparing heating area film liquid, (i) mixing trifluoroacetic acid with the volume V1and dichloromethane with the volume V2, and stirring evenly under sealing conditions to obtain a mixed solution, adding polyethylene terephthalate particles with a mass of m1into the mixed solution, stirring again under sealing conditions until the PET dissolves to obtain a first heating zone film liquid; (ii) dissolving polyimide with mass of m1in dichloromethane solution with the volume of V1and performing water bath heating for the first time to obtain a PI/dichloromethane mixed solution A, taking the absorbing material with the mass of m2and dissolving in dichloromethane solution with the volume of V2, and performing the second water bath heating to obtain a mixed liquid of wave absorbing material/dichloromethane B, where the wave absorbing material is a magnetic absorbent or a non-magnetic absorbent, mixing liquid A and liquid B, ultrasonically dispersing and heating in a water bath to evenly mix to obtain second heating zone film liquid; (iii) taking sodium carboxymethyl cellulose with the mass of m1and dissolving in deionized water for heating in a water bath, adding a shielding material with the mass of m2and stirring evenly, and placing in a water bath and heating until the solution is uniform to obtain third heating zone film liquid, where the shielding material is aluminum powder, silicon carbide powder and other materials with microwave total reflection properties; (2) surface coating of multi-component cold chain box lunch packaging film liquid, where the different components in the multi-component lunch box with corresponding storage position, combining with the target temperature required by the corresponding components, determining the shape area range and thickness of the film liquid required in the second fixing step. An INDEPENDENT CLAIM is also included for the multi-component cold chain box rice partition temperature control package prepared by above the method. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of preparing multi-component cold chain lunch box partitioned temperature-controlled packaging for microwave reheating (Drawing includes non-English language text).