COMPOSITE SHEET PRODUCTION DEVICE AND COMPOSITE SHEET PRODUCTION METHOD

To provide a composite sheet production device capable of efficiently producing a composite sheet comprising a fusion part having a through hole using an ultrasonic fusion machine.SOLUTION: A device 20 for producing a composite sheet comprises an ultrasonic processing unit 40 that has: an ultrasonic fusing machine 41 provided with an ultrasonic horn 42; and a first roller 31 having protrusions and recesses on a circumferential surface thereof, and the ultrasonic processing unit 40 is configured to sandwich a first sheet 1 and a second sheet 2, which are stacked on each other, between a protrusion of the first roller 31 and the ultrasonic horn 42, and to apply ultrasonic vibrations to the sheet to form a through hole 14 in the sheets, and a vibration application surface 42t in which a cross section orthogonal to a rotary shaft 31c of the first roller 31 is arc-shaped and recessed shape facing a direction away from the rotary shaft 31c is formed on a distal end of the ultrasonic horn 42.SELECTED DRAWING: Figure 3 【課題】超音波融着機を用いて、貫通孔を有する融着部を備えた複合シートを効率よく製造可能な複合シートの製造装置の提供。【解決手段】複合シートの製造装置２０は、超音波ホーン４２を備えた超音波融着機４１と、周面部に凹凸を有する第１ロール３１とを有する超音波処理部４０を備えており、超音波処理部４０は、互いに重ね合わせた第１シート１及び第２シート２を、第１ロール３１の凸部と超音波ホーン４２との間に挟んで超音波振動を印加することで、貫通孔１４形成するようになされており、超音波ホーン４２の先端部に、第１ロール３１の回転軸３１ｃに直交する断面形状が、回転軸３１ｃから離れる方向に向かって凹んだ円弧状である振動印加面４２ｔが形成されている。【選択図】図３