| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for preparing efficiently a mattress-like member which can be used for a mattress for bedding and exhibits good air permeability and can prevent mildow from being generated caused by moisture. SOLUTION: A three-dimensional net-like body 4 is continuously formed by a method wherein a plurality of downward nozzles 2 are provided on an extruder 1 and a plurality of linear bodies 3 are formed and are lowered by extruding continuously a heat-melted thermoplastic resin downward from each nozzle 2 and each linear body 3 is bent by taking off these linear bodies 3 by a slower speed than the lowering speed at the downward position while those linear bodies 3 are not solidified yet and contact points of the linear bodies 3 are mutually stuck by utilizing their adhesiveness to assemble them together. Recessed parts 7 are formed by embedding projections 12 at required intervals in the side face of the one side while the three-dimensional net-like body 4 is not solidified yet in the forming process of this three-dimensional net-like body 4 and then, after the three-dimensional net-like body 4 is cooled and solidified, it is cut into appropriate sizes.
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