A fatigue-resistant layered elastomeric structure is obtained by first extruding raw material of thermoplastic polyester elastomer into long linear structures. The long linear structures are further curled and bonded to form a volume of layered elastomeric structure with a certain thickness. Intermittently bonded points and continuously bonded points with fused sections equal to longer than 5 mm are formed during this process. Among all bonded points, the continuously bonded points have a proportion of at least 20%. Hardness loss rate after repeated compression is less than 23%. Relevant parameters are adjusted to obtain even larger percentages of continuously bonded points with better repeated compression durability.

Mattress assemblies including fiber panels generally include bicomponent fibers including optically active particles within a core thereof. The bicomponent fibers can be treated with a fire retardant or untreated and blended with fire retardant fibers. The bicomponent fibers are configured to transform radiant body heat of an end user.

To provide a net-like structure having excellent low resilience characteristics, cushioning properties, and durability. The net-like structure has a three-dimensional random loop bonded structure constituted of a continuous linear body made of a thermoplastic elastomer having a fiber diameter of 0.1-3.0 mm and a styrene content of 10-40 mass %, the net-like structure having an apparent density of 0.005-0.30 g/cm.sup.3 and a 40 C. compression residual strain of less than or equal to 35%.

To provide a net-like structure having excellent low resilience characteristics, cushioning properties, and durability. The net-like structure has a three-dimensional random loop bonded structure constituted of a continuous linear body made of a thermoplastic elastomer having a fiber diameter of 0.1-3.0 mm and a styrene content of 10-40 mass %, the net-like structure having an apparent density of 0.005-0.30 g/cm.sup.3 and a 40 C. compression residual strain of less than or equal to 35%.

A support system for the human body including two layers of 3D spacer fabric and one or more layers of a non-viscoelastic pressure relief material, such as a non-viscoelastic slow-recovery foam, latex foam, gel matrix or micro-coil, is disclosed. The support system reduces point pressure and evenly distributes pressure along the body, while providing a soft feel and more even and smooth transitions of movement.

A support system for the human body including two layers of 3D spacer fabric and one or more layers of a non-viscoelastic pressure relief material, such as a non-viscoelastic slow-recovery foam, latex foam, gel matrix or micro-coil, is disclosed. The support system reduces point pressure and evenly distributes pressure along the body, while providing a soft feel and more even and smooth transitions of movement.

A net-like structure of the present invention is one having a three-dimensional random loop bonded structure constituted of a thermoplastic elastomer continuous linear body, wherein the net-like structure has, in a thickness direction thereof, a thin fiber main region, a thick fiber main and a mixed region that is located between the thin fiber main region and the thick fiber main region and includes the thin fibers and the thick fibers in a mixed state, the fiber size of the thick fibers is greater than that of the thin fibers by greater than or equal to 0.07 mm, and the residual strain after 750 N constant load repeated compression at pressurization from the side of the thin fiber main region of the net-like structure is less than or equal to 15%.

A modular sleep apparatus that enables customization of a conventional mattress. The modular sleep apparatus includes a customizable mattress pad casing having pockets into which various inserts may be placed. The more the number of pockets, the greater customization the mattress pad allows. The inserts themselves can be of varying thickness, firmness, and material. In some embodiments, the inserts may also be placed directly over a conventional mattress and held in place with a fitted sheet. In other embodiments, the inserts are placed directly into pockets or envelopes in the top layer of a mattress. In other embodiments, the mattress pad casing is pre-assembled with inserts.

A person support for supporting a person includes a first layer and a resilient second layer. The first layer has a surface topography with a first region with a curvature configured to correspond and generally conform, in an unloaded state, to the shape of a first portion of a person's body. The surface topography has a second region configured to correspond and generally conform, in an unloaded state, to the shape of a second portion of a person's body. The resilient second layer overlays the first layer and forms a person support surface.

A manufacturing apparatus and manufacturing method for manufacturing a three-dimensional filaments-linked structure includes: divided weight information acquisition means which records divided weight information acquired by dividing weight distribution in a height direction of a person in a height axis direction, in correlation with a distance from a top of a head of the person; and three-dimensional linked structure formation means which tangles and fuses filaments of a thermoplastic resin material extruded from an extruder in a three-dimensional net shape, and forms a three-dimensional filaments-linked structure which is long in a product streaming direction, and the three-dimensional linked structure formation means includes filament density control means which controls filament density in the product streaming direction based on the divided weight information. As a result of the configuration, it is possible to promptly, reliably, and efficiently manufacture products with desired specifications for customers who request products with made-to-order specifications.