| 摘要 |
This disclosure covers methods of use and manufacture, and apparatuses for dispensing, and compositions of durable, water-dispersible or water-soluble polymer foams. Durable water-dispersible foam is soluble in aqueous solutions after curing, does not collapse into a film when dry after curing, and does not require hot extrusion in order to form foam. Durable water-dispersible foams may contain additives and fillers. Durable water-dispersible foams may be applied directly to objects before, during, and/or after curing. For example, durable water-dispersible foams may be sprayed directly onto plants, fruits, vegetables, and other water-resistant objects in order to provide temporary insulation, or for protection during shipping and handling. When the durable water-dispersible foam is no longer needed, it is simply rinsed away with water. Durable water-dispersible foam may also be used as a seed-sowing medium, fire fighting foam, erosion control, modeling material, mold-making material, molded material, and as a frost-protection barrier for plants.
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