A mattress includes a spring extending between first and second points to provide a first spring rate in a first direction. A polymer fiber structure is provided between the first and second points and adjoins the spring. The polymer fiber structure includes fibers interlinked with one another to provide the second spring rate in the first direction. An example method of manufacturing a mattress is provided that includes arranging springs to provide a mattress innerspring. A polymer fiber structure is introduced in a first state to the innerspring to provide an assembly. The assembly is further processed and the polymer fiber structure is simultaneously altered from the first state to a second state.

A mattress includes a spring extending between first and second points to provide a first spring rate in a first direction. A polymer fiber structure is provided between the first and second points and adjoins the spring. The polymer fiber structure includes fibers interlinked with one another to provide the second spring rate in the first direction. An example method of manufacturing a mattress is provided that includes arranging springs to provide a mattress innerspring. A polymer fiber structure is introduced in a first state to the innerspring to provide an assembly. The assembly is further processed and the polymer fiber structure is simultaneously altered from the first state to a second state.

The present invention provides a network structure having excellent repeated compression durability, a low repeated compression residual strain and a high hardness retention after repeated compression. A network structure made of a three-dimensional random loop bonded structure obtained by forming random loops with curling treatment of a continuous linear structure including at least one thermoplastic elastic resin selected from the group consisting of a polyolefin-based thermoplastic elastomer, an ethylene-vinyl acetate copolymer, a polyurethane-based thermoplastic elastomer and a polyamide-based thermoplastic elastomer, the continuous linear structure having a fineness of not less than 100 dtex and not more than 60000 dtex, and by making each loop mutually contact in a molten state, wherein The network structure has an apparent density of 0.005 g/cm.sup.3 to 0.20 g/cm.sup.3, a 50%-constant displacement repeated compression residual strain of not more than 15%, and a 50%-compression hardness retention after 50%-constant displacement repeated compression of not less than 85%.

This disclosure describes, among other things, techniques for waking a user by changing the user's sleep environment. In one example, a method includes receiving, at a central controller of an air mattress system, at least one user alarm setting, generating, via the central controller, at least one instruction based on the received user alarm setting, and transmitting, from the central controller, the at least one instruction to a first component of the air mattress system to adjust a feature of the first component.

A mattress includes a spring extending between first and second points to provide a first spring rate in a first direction. A polymer fiber structure is provided between the first and second points and adjoins the spring. The polymer fiber structure includes fibers interlinked with one another to provide the second spring rate in the first direction. An example method of manufacturing a mattress is provided that includes arranging springs to provide a mattress innerspring. A polymer fiber structure is introduced in a first state to the innerspring to provide an assembly. The assembly is further processed and the polymer fiber structure is simultaneously altered from the first state to a second state.

A mattress includes a spring extending between first and second points to provide a first spring rate in a first direction. A polymer fiber structure is provided between the first and second points and adjoins the spring. The polymer fiber structure includes fibers interlinked with one another to provide the second spring rate in the first direction. An example method of manufacturing a mattress is provided that includes arranging springs to provide a mattress innerspring. A polymer fiber structure is introduced in a first state to the innerspring to provide an assembly. The assembly is further processed and the polymer fiber structure is simultaneously altered from the first state to a second state.

A three-dimensional striped structure is provided which is formed by bonding continuous filaments in random in loops, has a longitudinal direction corresponding to an extruding direction, a lateral direction and a thickness direction perpendicular to the extruding direction, and is comprised of a polyethylene thermoplastic resin, a polyester thermoplastic elastomer or a mixture of a polyethylene thermoplastic resin and a polyethylene thermoplastic elastomer. The three dimensional striped structure has an impact resilience of not lower than 13 cm, a hysteresis loss of not higher than 34% and not lower than 13%, and a thermal expansion rate of 0 to 8% in the longitudinal direction before and after a hot-air drying test, and does not shrink during high-temperature sterilization

A three-dimensional striped structure is provided which is formed by bonding continuous filaments in random in loops, has a longitudinal direction corresponding to an extruding direction, a lateral direction and a thickness direction perpendicular to the extruding direction, and is comprised of a polyethylene thermoplastic resin, a polyester thermoplastic elastomer or a mixture of a polyethylene thermoplastic resin and a polyethylene thermoplastic elastomer. The three dimensional striped structure has an impact resilience of not lower than 13 cm, a hysteresis loss of not higher than 34% and not lower than 13%, and a thermal expansion rate of 0 to 8% in the longitudinal direction before and after a hot-air drying test, and does not shrink during high-temperature sterilization

A mattress protector includes a composite sheet having a non-deformed length and a non-deformed width. The composite sheet includes a fabric and a water impermeable polymer. The composite sheet is capable of repeatedly stretching to a deformed length of at least 115% of the non-deformed length and returning to within 8% of the non-deformed length without rupture or permanent wrinkling of the composite sheet. Mattresses may be covered and protected by such a mattress protector. Methods of forming mattress protectors include providing a water impermeable polymer on a fabric so as to form a composite sheet having a non-deformed length and a non-deformed width, and formulating and configuring the composite sheet so as to be capable of repeatedly stretching to a deformed length of at least 115% of the non-deformed length and returning to within 8% of the non-deformed length without rupture or permanent wrinkling of the composite sheet.

By taking into account the difficulty in smoothly bending along the shape of, for example, a care bed, there is provided a three-dimensional net-like structure made from polyethylene having a swelling ratio dependent on a shear rate such as to be 0.93 to 1.16 at a shear rate of 24.3 sec.sup.1 and 1.15 to 1.34 at a shear rate of 608 sec.sup.1 and having an MFR of 3 to 35 g/10 min and a density of 0.82 to 0.95 g/cm.sup.3 and configured to have a spring structure of filaments randomly brought into contact with and tangled with one another, have a three-dimensional striped sparse-dense configuration in a lateral direction relative to an extrusion direction. The swelling ratio is shown as D.sub.2/D.sub.1 against shear rate when a molten thermoplastic resin is extruded to filaments from a capillary having a tube inner diameter D.sub.1 of 1.0 mm and a length of 10 mm and D.sub.2 denotes a diameter of cross section of the filaments extruded and cooled down.