Abstract: An apparatus for manufacturing a three-dimensional netted structure, the three-dimensional netted structure including a plurality of filaments of resin, the filaments being helically and randomly entangled and thermally bonded together, the apparatus including: an extrusion molding machine including a plurality of dies each having a mouthpiece with a plurality of holes; a pair of endless conveyors provided with endless members; a motor adapted to drive the endless members; and a tank adapted to partly submerge the endless conveyors therein. A method of manufacturing a three-dimensional netted structure using the apparatus by extruding molten filaments of a thermoplastic resin downward from the dies via the mouthpiece, helically entangling the molten filaments by entangling actions of the endless members, and cooling the entangled filaments in a liquid in the tank.

Abstract: An apparatus for manufacturing a three-dimensional netted structure, the three-dimensional netted structure including a plurality of filaments of resin, the filaments being helically and randomly entangled and thermally bonded together, the apparatus including: an extrusion molding machine including a plurality of dies each having a mouthpiece with a plurality of holes; a pair of endless conveyors provided with endless members; a motor adapted to drive the endless members; and a tank adapted to partly submerge the endless conveyors therein. A method of manufacturing a three-dimensional netted structure using the apparatus by extruding molten filaments of a thermoplastic resin downward from the dies via the mouthpiece, helically entangling the molten filaments by entangling actions of the endless members, and cooling the entangled filaments in a liquid in the tank.

Abstract: An apparatus for manufacturing a three-dimensional netted structure, the three-dimensional netted structure including a plurality of filaments of resin, the filaments being helically and randomly entangled and thermally bonded together, the apparatus including: an extrusion molding machine including a plurality of dies each having a mouthpiece with a plurality of holes; a pair of endless conveyors provided with endless members; a motor adapted to drive the endless members; and a tank adapted to partly submerge the endless conveyors therein. A method of manufacturing a three-dimensional netted structure using the apparatus by extruding molten filaments of a thermoplastic resin downward from the dies via the mouthpiece, helically entangling the molten filaments by entangling actions of the endless members, and cooling the entangled filaments in a liquid in the tank.

Abstract: An apparatus for manufacturing a three-dimensional netted structure, having a pair of opposing chutes located below the mouthpiece along the width direction of the filament assembly and vertical to the thickness direction of the filament assembly, the chutes being inclined so that the distance between each the chute becomes narrower downward and toward the center of the filament assembly, the cooling water is supplied on the surface of the chutes, the cooling water flowing on the chutes receives the filaments in a surface part of the filament assembly to form loops and make the adjacent continuous filaments contact and be entangled with each other, and a surface layer having a higher apparent density and an inner layer having a lower apparent density located inside the surface layer are formed by the conveyor.

Abstract: Dew condensation-preventing mattress is constructed to have a three-dimensional netted structure by extruding a molten material containing at least a thermoplastic resin into filaments, forming an aggregation of multiple filaments looped and randomly entangled with partial thermal adhesion in a plate-like shape, and cooling down to solidify the plate-like aggregation of the multiple filaments. The three-dimensional netted structure has hard side regions of a higher bulk density formed on left and right longitudinal side faces of the three-dimensional netted structure. The dew condensation-preventing mattress of this arrangement has an effect of dew condensation prevention as well as an effect of body pressure dispersion.

Abstract: An apparatus for manufacturing a three-dimensional netted structure, the three-dimensional netted structure including a plurality of filaments of resin, the filaments being helically and randomly entangled and thermally bonded together, the apparatus including: an extrusion molding machine including a plurality of dies each having a mouthpiece with a plurality of holes; a pair of endless conveyors provided with endless members; a motor adapted to drive the endless members; and a tank adapted to partly submerge the endless conveyors therein. A method of manufacturing a three-dimensional netted structure using the apparatus by extruding molten filaments of a thermoplastic resin downward from the dies via the mouthpiece, helically entangling the molten filaments by entangling actions of the endless members, and cooling the entangled filaments in a liquid in the tank.

Abstract: A method of and an apparatus for manufacturing a three-dimensional netted structure using thermoplastic resin. The netted structure includes a plurality of filaments which are helically and randomly entangled and partly and thermally bonded together. The netted structure is a three-dimensional plate type netted structure having an apparent density greater than a predetermined amount.

Abstract: A method of and an apparatus for manufacturing a three-dimensional netted structure which is capable of rendering it unnecessary to carry out a finishing operation in a later stage, improving the degree of straightness of the side surfaces of the netted structure, meeting a demand for finishing the netted structure to modified shapes, and improving the durability of the netted structure. A three-dimensional netted structure (1) using thermoplastic resin as a raw material or a main raw material is characterized by a three-dimensional plate type netted structure, in which a plurality of filaments are helically and randomly entangled and partly and thermally bonded together.

Abstract: A three-dimensional netted structure having an upper surface, a lower surface, two side surfaces a left end surface, and a right end surface, including at least a plurality of filaments helically and randomly entangled and thermally bonded together, wherein the filaments are formed out of a thermoplastic resin by extrusion molding followed by cooling with a liquid; and the netted structure is four-surface molded, the upper surface, the lower surface and the two side surfaces being molded. An apparatus and a method for manufacturing the three-dimensional netted structure.