Foam element with hydrophilic substances incorporated in it

A foam product,

• wherein the foam product is a member selected from the group consisting of a mattress, a seat or a seat part for vehicles, camping furniture, a cladding part for motor vehicles, a shoe sole, a shoe insole, cushioning for a belt, cushioning for a helmet, furniture padding, a pillow, a cushion, padding for a medical dressing,
• wherein the member is a foam product made from:
• a foam having a foam structure comprising cell walls, and
• particles of at least one hydrophilic,
• wherein the foam product has a reversible capacity to absorb moisture,
• wherein the particles are made from timber materials and the particle size is smaller than 400 μm,
• wherein the particles are approximately spherical,
• wherein a partial quantity of the particles is completely embedded within the cell walls of the foam structure,
• wherein another partial quantity of the particles is disposed protruding out from a surface of the cell walls of the foam structure, and
• wherein the foam without the particles has a moisture absorption capacity of more than 2.8% by weight at an equilibrium moisture corresponding to a temperature of 23° C.

A foam element made from a foam having a foam structure comprising cell walls and particles of at least one hydrophilic,

• wherein the foam element has a reversible capacity to absorb moisture,
• wherein a proportion of the particles by reference to the total weight of the foam is in a range with a lower limit of 0.1% by weight and an upper limit of 35% by weight,
• wherein the weight by volume or density of the foam displaced with the particles is more than 45 kg/m3,
• wherein the particles are approximately spherical,
• wherein a partial quantity of the particles is completely embedded within the cell walls of the foam structure,
• wherein another partial quantity of the particles is disposed protruding out from a surface of the cell walls of the foam structure,
• wherein the foam without the particles has a moisture absorption capacity of more than 2.8% by weight at an equilibrium moisture corresponding to a temperature of 23° C.,
• wherein the foam element has a compression hardness at a compression depth of 40% with a lower limit of 2.5 kPa and an upper limit of 3.5 kPa, and
• wherein the foam element has an elasticity based on the ball drop test in accordance with EN ISO 8307 with a lower limit of 25% and an upper limit of 60%.

A foam element made from a foam and particles of at least one hydrophilic,

• wherein the foam element has a reversible capacity to absorb moisture,
• wherein the foam is a plastic foam having a foam structure comprising cell walls,
• wherein a polyol is used to make the plastic foam,
• wherein the particles are made from cellulose,
• wherein the particles have a structure type based on the crystal modification of cellulose-II,
• wherein the particles are approximately spherical,
• wherein a partial quantity of the particles is completely embedded within the cell walls of the foam structure,
• wherein another partial quantity of the particles is disposed protruding out from a surface of the cell walls of the foam structure, and
• wherein the foam without the particles has a moisture absorption capacity of more than 2.8% by weight at an equilibrium moisture corresponding to a temperature of 23° C.