Introduce the application of water-soluble film in pesticide packaging

The application of water-soluble films in pesticide packaging is an important innovation in the combination of environmental protection and agricultural technology in recent years, especially in reducing pesticide residues, improving safety of use, and reducing environmental pollution. The following is a detailed introduction to its application characteristics, advantages, and current situation:

1. Application principle

Water soluble films are made of soluble polymer materials such as polyvinyl alcohol (PVA) and starch, which can quickly dissolve in water at specific temperatures. The pesticide is encapsulated in the film, and the package is directly put into the spray equipment when used. After the film is dissolved, the pesticide is released to realize non-contact dispensing.

2. Core advantages

• Environmental friendliness：Reduce the residue of traditional plastic packaging (such as PE bottles and aluminum foil bags), with degradation products of water and CO ₂, to avoid "white pollution" in farmland; Compliant with international environmental regulations (such as EU REACH and China's "plastic ban" direction).
• Security：Avoid direct contact with pesticides by users to reduce the risk of poisoning, especially suitable for highly toxic or highly toxic pesticides；Children have a low risk of accidental ingestion (bitter taste agents can be added).
• Convenience：Eliminating weighing and bottle opening steps, reducing dispensing errors, suitable for precision agriculture；Suitable for modern pesticide application scenarios such as drone flight defense.
• Accurate dosage：Each package corresponds to a fixed water volume (such as 1 package/15L of water) to avoid manual mixing errors.

3. Application scenarios

• Solid pesticides, such as wettable powders (WP) and water dispersible granules (WDG).
• Liquid pesticide: requires a double-layer film design (inner water-soluble film+outer waterproof film).
• Seed coating: Water soluble film wraps fungicides/insecticides, and after sowing, the film dissolves and releases the medication.

4. Challenges and limitations

• Cost issue: PVA film is 2-3 times more expensive than traditional packaging and is suitable for high value-added pesticides.
• Storage conditions: Moisture proof packaging is required to avoid premature dissolution in high temperature and high humidity environments.
• Applicability limitations: Some dosage forms (such as oils) have poor compatibility.

5. Future Trends

• Multi functional film: Integrated sustained-release technology to prolong drug efficacy.
• Intelligent response: PH or temperature sensitive film, released for specific environments.
• Cost optimization: Replace PVA with biobased materials such as sodium alginate.

Summary

Water soluble film pesticide packaging is an important tool for green agriculture, especially suitable for large-scale farms and flight prevention needs. Although cost and technical details still need to be optimized, its environmental and safety values will drive market growth and may become one of the mainstream choices for pesticide packaging in the future.