Branded food packaging places stringent demands on the moisture absorption stability and safety of desiccants. According to the "Test Methods for Performance of Desiccants in Food Packaging," food desiccants must maintain stable moisture absorption in varying humidity environments and prevent the migration of harmful substances. Shenzhen Ensobo Desiccant Co., Ltd., a manufacturer and exporter of food-grade desiccants, conducted comparative research to clarify the compatibility of double-layer and single-layer calcium chloride desiccant for branded food packaging.
Single-layer calcium chloride desiccant has a fast moisture absorption rate (0.08g/h) at 25°C and 75% RH, making it suitable for short-shelf-life branded foods such as bread. Double-layer calcium chloride desiccant, with its outer layer's sustained-release structure, controls its moisture absorption rate to 0.03g/h. After moisture absorption, the gel retains 98% of its moisture, making it suitable for long-shelf-life branded foods such as canned and freeze-dried foods. Both products have passed food contact material safety assessments and comply with the GB 4806.8-2016 standard. As an exporter, Ensobo's double-layer and single-layer calcium chloride desiccants have both passed EU EFSA food additive certification and have been supplied to European food companies in Germany, France, and other countries. Ensobo also offers OEM/ODM services, allowing customers to select the appropriate calcium chloride desiccant type based on the brand's packaging size (e.g., small snack bags, large rice and flour packages) and shelf life (3-24 months). Its performance comparison data provides a scientific basis for branded food companies to select desiccant.