| 摘要 |
<p>A foam element with a hydrophilic substance incorporated in the foam in the form of cellulose of the structure type based on the crystal modification of cellulose-II, and the foam element incorporating the cellulose has a reversible capacity to absorb moisture. A proportion of the cellulose is between 0.1 % by weight and 10 % by weight. A value of the foam moisture corresponding to an equilibrium moisture in a first ambient atmosphere is increased during use in a second ambient atmosphere. The moisture absorbed by the cellulose II after use evaporates again within a period of between 1 hour and 16 hours until the initial value of the foam moisture corresponding to the equilibrium moisture by reference to the ambient first atmosphere is restored. The cellulose-II may be in the form of fibres or spherical particles. Also shown is the use of the foam element to make a plastic product e.g. mattress, pillow, furniture upholstery.</p> |
