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Moisture Absorption & Caking Insufficient sealing can cause granular, powder or water-soluble fertilizers to absorb moisture and cake, affecting flowability, dissolution and end use. |
Liquid Leakage Vibration, inversion and long-distance transport can amplify lid-fit issues, leading to cargo damage, contamination and claims. |
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Bulging / Paneling-In Gradual gas generation, hot filling or temperature changes can create internal/external pressure differences, causing bulging, paneling-in or label lifting. |
Formula Compatibility Salts, acidic or alkaline ingredients and high-concentration additives may affect the long-term performance of the pail, lid or valve membrane. |
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Stacking & Transport Deformation Long-term loading on filled pails or handling impact may cause pail deformation, stress at the closure and pallet instability. |
Outdoor Aging & Fading Fertilizer distribution channels and agricultural sites often involve outdoor storage; sunlight and heat can increase the risk of plastic aging and appearance degradation. |
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Solution Principle First confirm fertilizer form, formulation, filling method and storage/transport environment, then determine sealing, venting, load resistance, weather resistance and verification requirements. The packaging should fit the fertilizer—not force the fertilizer to fit an existing pail. |
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