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Medical packaging should be a specific analysis of specific issues
ã€Chinese Packaging Network News】 Proper packaging of traditional Chinese medicinal materials is essential to maintain their quality and prevent deterioration. The packaging materials should be dry, free from insects, and not affect the integrity of the herbs. Soft materials such as flowers, leaves, grasses, and peels—like honeysuckle, safflower, cockscomb, perilla, Prunella vulgaris, Daphne, bergamot, and dried tangerine peel—require special attention. Similarly, roots like gentian, windroot, Danshen, ephedra, and mulberry bark also benefit from appropriate packaging methods. Using support structures can help preserve the quality of these delicate herbs during storage and transport.
Compression packaging is commonly used for light and airy herbal materials. It typically includes wrapping materials, binding tapes, moisture-proof layers, and sealing elements. The materials must be clean, dry, and free from pests. For example, herbs like honeysuckle, safflower, chrysanthemum, lotus root, and mint may require moisture-proof paper lining to prevent dampness. Support structures are often made of bamboo or Vitex, with bamboo pieces measuring 30mm in width and 4–6mm in thickness. These supports help maintain the shape and stability of the packaged herbs.
Corrugated cardboard boxes are ideal for domestic transportation of Chinese herbal medicines. They are especially suitable for valuable herbs like ginseng, Panax pseudoginseng, as well as fragile or perishable materials such as gardenia, hawthorn, chicken internal gold, and rose petals. Inside the box, various lining materials such as corrugated cardboard, polypropylene plastic films, moisture-proof paper, or natural fabrics are used. For example, herbs like hawthorn, python, and Cordyceps sinensis may require moisture-proof paper. Red ginseng and wolfberry can use either moisture-proof paper or heat-sealed plastic film. Linen bags are also used for Sanqi, with the bag mouth securely sewn to fit the box dimensions.
Wooden crates are typically made from coniferous wood, which must be free from rot, knots, and cracks that could weaken the structure. The moisture content of the wood should be between 15% and 18%, with a minimum of 12% and a maximum of 20%. If the moisture level is too low, the wooden box may become brittle, while high moisture can lead to dampness inside the package. When loading, herbs should be neatly arranged to avoid damage caused by friction during transit. To enhance moisture resistance, the inside of the crate can be lined with moisture-proof paper or plastic film.
For liquid-based herbal products such as peppermint oil or valerian oil, metal drums or ceramic containers are preferred. Solid herbs containing volatile compounds, like borneol, musk, and camphor, should also be stored in sealed metal or ceramic containers to prevent loss of active ingredients.
Bamboo or wicker baskets are widely used for packing herbs, with capacities ranging from 10 to 100 kg. The choice of basket depends on the nature of the herbs and the distance of transport. Sturdy herbs can be placed in larger baskets, while softer or more fragile ones should go into smaller containers to avoid damage.
Pouches or grass-wrapped packages are another traditional method. After the herbs are neatly arranged, they are wrapped with hemp rope or wire. However, care must be taken to ensure that the packaging material is not too tight or difficult to open, as this could compromise the quality of the herbs and complicate handling.
Paper bags made from kraft paper are also commonly used. They can be reinforced with 2–5 layers for added strength. These bags offer better protection than sacks and are ideal for small quantities of herbs. Kraft paper has low moisture permeability, and when lined with moisture-proof paper, it provides excellent preservation for delicate medicinal materials.