Patent ID: 11890174
Assignee: ZUIKO CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A  B | IPC A

Claim 4:
5. An apparatus for manufacturing the stretchable sheet according to claim 1, the manufacturing apparatus comprising:
an anvil roll for carrying the pair of sheets and the elastic members so that the elastic members are arranged between the pair of sheets; and
a welding device, in cooperation with the anvil roll, for welding together the pair of sheets so that the elastic members are held by the pair of sheets, wherein:
the anvil roll has a plurality of ridges that are formed on a circumferential surface of the anvil roll and extend in a width direction of the anvil roll;
each of the ridges includes a plurality of high ridge portions for producing the strongly-attached portions and a plurality of low ridge portions for producing the weakly-attached portions;
the high ridge portions and the low ridge portions are provided intermittently in the width direction; and
a height of the low ridge portions is lower than a height of the high ridge portions.