A method for manufacturing a petal cup with a core base structure

Abstract

This application relates to the field of polymer material molding and processing technology, specifically disclosing a method for preparing a petal cup with a flower core bottom structure. The raw materials used include high-amylose corn starch, polycaprolactone diol, glycerol-water azeotropic mixture, food-grade montmorillonite nanosheets, citric acid, choline chloride, and sodium hypophosphite. These components synergistically constitute a raw material system suitable for biomimetic structural molding. The preparation method is as follows: first, humidity gradient gel particles are prepared; then, they are vibrated and sheared to fill the thin-walled area of ​​the petals; subsequently, gradient temperature and pressure curing under a temperature difference between the male and female molds allows for selective cross-linking and shaping of the petals; next, controlled-speed pressure release under a CO2 atmosphere eliminates internal stress and shapes a naturally curled form; finally, the mold is opened and cured to obtain the finished product. This petal cup can be used in high-end food packaging, home decoration, and art ware scenarios. The finished petals have complete shapes and clear textures, and the flower core bottom structure is dense and stable, possessing both good mechanical properties and biomimetic aesthetic effects.

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