In recent years, plant capsules have become a popular choice in the field of pharmaceutical and health care product packaging due to their environmentally friendly and natural characteristics. Compared with traditional gelatin capsules, plant capsules are made of plant cellulose or hydroxypropyl methylcellulose (HPMC) as the core material through precision technology. Its structure is both innovative and practical, reflecting the cutting-edge development of green packaging technology.
1. Basic materials: natural polymers as the core
The main raw materials of plant capsules come from sustainably grown plants, such as cassava, cotton or pine. These raw materials are refined to form plant cellulose or modified cellulose, which has the advantages of no animal origin and no allergens, especially suitable for vegetarians and people with religious dietary restrictions.
2. Multi-layer composite structure: both functional and durable
Plant capsules adopt a double-layer or three-layer composite design. The inner layer is in direct contact with the contents and needs to meet high barrier properties to prevent moisture and oxygen penetration; the outer layer focuses on mechanical strength to ensure integrity during transportation and storage. Some products adjust their elasticity by adding glycerin or natural plasticizers to keep them flexible at room temperature while meeting the requirements of high-temperature filling processes.
3. Sealing and labeling technology
The locking method of plant capsules usually adopts the "convex ridge-groove" physical structure, and achieves tight closure through precise mold stamping to prevent leakage of contents. The surface can be printed with environmentally friendly inks, supporting customized labels to meet brand differentiation needs.
4. Environmental protection and functional upgrades
Modern plant capsules further incorporate sustained-release technology or light-shielding coatings to extend drug activity. Its degradation cycle is only 1/5 of that of traditional plastics, and its production energy consumption is reduced by 40%, which complies with EU green packaging regulations and FDA certification standards.
With the advancement of the global plastic ban, plant capsules are moving from a niche market to the mainstream. The continuous optimization of its structural design has not only promoted the sustainable transformation of the packaging industry, but also provided consumers with safer and more transparent product choices.
