| 摘要 |
An elastic thread supply device (100) configured to supply an elastic thread (TH) to a processing line, such is a line for making a disposable diaper from an elastic thread drawn from the elastic thread package (P) by overend unwinding for sequential drawing of the elastic thread in an axial core direction of a cylindrical elastic thread package around which the elastic thread is wound, comprising a stress control unit (130) configured to control the stress acting upon the elastic thread drawn from the elastic thread package, performed in such a way that the stress upon the elastic thread drawn from the package becomes lesser than the stress acting upon the elastic thread in the processing line, and a drive roll (140) configured to supply the elastic thread dispensed from the stress control unit, to the processing line, performed in such a way that by its operating at a supply velocity slower than a conveyance velocity of an article that is conveyed in the processing line the elastic thread is supplied to the processing line such that supplied thread attains a percentage of stretch from 1,1 to 1,3 between the drive roll and the processing line, such that a supply speed (v2) is varied in accordance with variation in a conveyance speed (v1) of an article to be conveyed in the processing line. |
