Packing material capable of heat discoloration and preparation method of packing material

Abstract

The invention provides a packing material capable of heat discoloration and a preparation method of the packing material. The packing material comprises, by weight, 1-5% of thermochromic powder, 5-18%of a thermal stabilizer, 1-10% of an antioxidant, 2-10% of a dispersing agent and 65-90% of a base material, and the preparation method comprises the steps of: premixing the thermochromic powder, thethermal stabilizer, the antioxidant, the dispersing agent and the base material evenly, and then conducting processing and forming to obtain the packing material. The packing material has the advantages of multiple times of discoloration; situations of discoloration effects, such as color fading and uneven discoloration, start to emerge when the prior art is used less than 30 times, and comparedwith the prior art, the discoloration effect of the packing material can be used more than 70 times.

Description

technical field [0001] The invention relates to the technical field of temperature-sensitive discoloration, in particular to a packaging material capable of temperature-sensitive discoloration and a preparation method thereof. Background technique [0002] Conventional ice packs, hot packs, cold and hot packs, ice boxes, hot boxes, incubators and other products cannot directly reflect the product temperature, and need to use testing instruments to detect the product temperature before knowing the product temperature, which affects the product experience. At present, there are not many relevant reports on temperature-sensitive color-changing packaging materials, and due to the disadvantages of single color-changing effect, inconspicuous color, and short lifespan of product color-changing effects, temperature-sensitive color-changing packaging materials still cannot meet people's use requirements. Contents of the invention [0003] In view of the defects in the prior art, th...

AI Technical Summary

Problems solved by technology

[0002] Conventional ice packs, hot packs, cold and hot packs, ice boxes, hot boxes, incubators and other products cannot directly reflect the product temperature, and need to use testing instruments to detect the product temperature before knowing the product temperature, which affects the product experience

At present, there are not many relevant reports on temperature-sensitive color-changing packaging materials, and due to the disadvantages of single color-changing effect, inconspicuous color, and short lifespan of product color-changing effects, temperature-sensitive color-changing packaging materials still cannot meet people's use requirements.

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