Importance

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Abstract

A single facer containing a first corrugating roll, a second corrugating roll and a gluing mechanism further has an introducing device which is disposed to oppose the second corrugating roll across the liner feed line and pressed against the second corrugating roll via a corrugating medium and a liner; a wrapped roll disposed to oppose the second corrugating roll across the liner feed line on the downstream side of the introducing device with respect to the liner feed direction such that it may not bring the corrugating medium and the liner into press contact with the second corrugating roll, the wrapped roll being driven to rotate at a variable circumferential speed relative to that of the second corrugating roll; a wrapping roll for wrapping the corrugating medium and the liner around the wrapped roll, disposed to oppose the wrapped roll across the feed line, the position of the wrapping roll being adjustable along the circumference of the roll; and a position adjusting mechanism for moving the wrapping roll along the circumference of the wrapped roll so as to change the wrapping area thereon; wherein full adhesion between the corrugating medium and the liner having been subjected to initial adhesion between the second corrugating roll and the introducing device is designed to be achieved by the tension to be generated by the difference between the circumferential speed of the wrapped roll and that of the second corrugating roll.

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First Claim