PROBLEM TO BE SOLVED: To provide a method for manufacturing a filling material of a container, capable of further uniformizing the size and shape of an annular winding part, and to provide an apparatus for winding of a cylindrical net.SOLUTION: The method includes a step of densely drawing an annular winding part C by relatively pulling out a net N protruding from the annular winding part C to a base end side to the base end side while supporting the annular winding part C by a holder 9 abutting on the base end side lateral part of the annular winding part C after forming the annular winding part C constituted by multiply winding the annular net N from the axial direction distal end to the axial proximal end outwardly or inwardly in an radial direction.COPYRIGHT: (C)2012,JPO&INPIT【課題】環状巻回部のサイズや形状を一層均一化することができる容器の詰め物の製造方法並びに装置を提供する。【解決手段】筒状ネットNを軸方向先端部から軸方向基端側へ向けて径方向外方若しくは内方に多重に巻回してなる環状巻回部Cを形成した後、該環状巻回部Cの基端側側部に当接するホルダー9によって環状巻回部Cを支持しつつ環状巻回部Cから基端側へ突出するネットNを基端側へ相対的に引き出すことによって、環状巻回部Cを密に絞る工程を備える。【選択図】図1