Method and apparatus for making filter socks

Details Method and apparatus for making filter socks Method and apparatus for making filter socks

B - Operations, Transporting

23

P

26/160

B23P 15/00 (2006.01)

Patent

CA 1203678

METHOD AND APPARATUS FOR MAKING FILTER SOCKS Abstract of the Disclosure Apparatus for making milk filter socks from a longitudinally folded sheet of filter paper. The sheet of filter material is continuously fed along a conveying path past an ultrasonic welder which bonds together its free longitudinal edges. A stop mechanism located down- stream from the ultrasonic welder intermittently stops the sheet of filter material so that a second ultrasonic welder may transversely bond the sheet, and a cutting disc may transversely cut the sheet to provide an open end tubular structure. A dancer roll engaging one side of the sheet is slidably mounted for reciprocal movement in a direction normal to the plane of the conveying path and is located between the two ultrasonic welders. The dancer roll accumulates or takes up the slack in the sheet of filter material being continuously fed while the downstream end of the sheet is stopped during the transverse bonding and cutting operations. A method of making filter socks is also described herein.

408835

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