A mattress production line for use in mattress production includes at least one adhesion bridge, and at least one assembly unit provided in the vicinity of the adhesion bridge and where the parts, forming the mattress, are joined. The improved mattress production line is that in order to provide transfer of a bending element used in mattress production and of a first component and of a second component, which can essentially be positioned on mutual sides of the bending element, to an assembly unit within a predetermined arrangement; the subject matter mattress production line includes a driving unit having at least one lower conveyor and at least one upper conveyor positioned at the upper vicinity of the lower conveyor, and at least one guidance conveyor configured to feed the element, which forms the mattress, to at least one of the lower conveyor and the upper conveyor in the driving unit.

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.

A mattress in which a vibration is unlikely to be transmitted between different cushion members is provided. The mattress includes a mattress cushion on which a plurality of persons can lie in a left/right direction, the mattress cushion includes a plurality of cushion members that can be separated in the left/right direction, each of the cushion members is formed with a filament three-dimensional bonded member that includes a plurality of filaments, and includes a contact surface that is in contact with another cushion member adjacent to the cushion member and ends of the filaments of the cushion member do not enter the other cushion member adjacent to the cushion member.

To produce a seat cushion body, at least one yarn is cut to produce a fiber material. The fiber material is transported from a cutter system which cuts the at least one yarn to a mold.