Apparatus and methods for manufacturing personal care absorbent articles. Such personal care absorbent article includes a fastening area in the front portion for receiving fastener material thereon. First and second fault lines are formed on opposing sides of the fastening area leaving uncut web portions at the fault lines during selected manufacturing operations, thus to support machine direction stresses on the front portion web, and subsequently trimming away such uncut web portions of the fault lines. Fastener material is applied over the first and second fault lines, thus bridging the fault lines. The fastener material is releasable secured to the fastening area, non-releasable secured to the front portion outwardly of the respective fault lines, and unsecured to the front portion between the fastening area and the fault lines thus to support a re-fastening feature of such personal care absorbent articles.
An ultrasonic processing method and apparatus (20) can include a rotatable, ultrasonic horn member (28) that is operatively joined to an isolation member (42) which has high rigidity. Additionally, a rotatable anvil member (86) can be cooperatively positioned to provide a selected horn-anvil gap (106) between the anvil member (86) and the horn member (28). A transfer device (110) can be configured to selectively adjust the horn-anvil gap (106), and an automated drive (130) can be operatively connected to the transfer device (110) to selectively modify the horn-anvil gap (106). A force sensor (126) can be configured to detect a gap force at the horn-anvil gap (106), and an electronic processor (128) can be configured to employ an output from the force sensor (126) to monitor the gap force, and provide a drive signal to the automated drive (130) to thereby adjust the horn-anvil gap (106).
An ultrasonic processing method and apparatus (20) can include a rotatable, ultrasonic horn member (28) that is operatively joined to an isolation member (42) which has high rigidity. Additionally, a rotatable anvil member (86) can be cooperatively positioned to provide a selected horn-anvil gap (106) between the anvil member (86) and the horn member (28). A transfer device (110) can be configured to selectively adjust the horn-anvil gap (106), and an automated drive (130) can be operatively connected to the transfer device (110) to selectively modify the horn-anvil gap (106). A force sensor (126) can be configured to detect a gap force at the horn-anvil gap (106), and an electronic processor (128) can be configured to employ an output from the force sensor (126) to monitor the gap force, and provide a drive signal to the automated drive (130) to thereby adjust the horn-anvil gap (106).
An ultrasonic processing method and apparatus (20) can include a rotatable, ultrasonic horn member (28) that is operatively joined to an isolation member (42) which has high rigidity. A rotatable anvil member (86) can be cooperatively positioned to provide a selected horn-anvil gap (106), and an automated drive (130) can be connected to an actuator (110), or other transfer device, to automatically adjust the horn-anvil gap (106). An electronic processor (128) can be configured to monitor an intermittent gap force detected from an output provided by a force sensor (126), and can provide a drive signal to the automated drive (130) to thereby adjust the horn-anvil gap (106) to operatively maintain a target, gap force value.
Apparatus and methods for manufacturing personal care absorbent articles. Such personal care absorbent article includes a fastening area in the front portion for receiving fastener material thereon. First and second fault lines are formed on opposing sides of the fastening area leaving uncut web portions at the fault lines during selected manufacturing operations, thus to support machine direction stresses on the front portion web, and subsequently trimming away such uncut web portions of the fault lines. Fastener material is applied over the first and second fault lines, thus bridging the fault lines. The fastener material is releasably secured to the fastening area, non-releasably secured to the front portion outwardly of the respective fault lines, and unsecured to the front portion between the fastening area and the fault lines thus to support a re-fastening feature of such personal care absorbent articles.