| 摘要 |
The present invention relates to a process for making air stable, water-reactive foam components comprising polymeric material and an active ingredient and preferably a liquid, which are to be delivered to aqueous environment, using the step of submitting a viscous mixture of the ingredients, having a specific viscosity and/or being intensively mixed, to pressure, typically by using an extrusion process, and whereby a gas is introduced in this mixture. The process is typically such that only small amount of liquid are required and only limited drying is needed to remove the liquid to obtain the components. Typically additional gas is injected in the process (in addition to gas of mixing) to improve foaming. The invention also provides components obtained by such a process.
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