摘要A mouldable product such as a pad which can be selectively transformed between pliable and rigid states is formed of a sealed plastic container which houses a metastable compound such as sodium acetate tri-hydrate, a trigger device for initiating the nucleating process in the compound to render it rigid, and a reinforcing open micro- porous material. The material may be fibrous, e.g., cotton, and stabilizes the product in its rigid state for a comparatively long time.
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