The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 2001
Filed:
Oct. 06, 2000
Jorma Kinnunen, Helsinki, FI;
Juha Laitio, Espoo, FI;
Valmet Corporation, , FI;
Abstract
The invention concerns an arrangement of threading of a paper web (W) in a supercalender, which comprises an upper roll (,), a lower roll (,), and a stack of rolls consisting of intermediate rolls (,) and fitted between said upper and lower roll. The rolls (,) in the calender arm in nip contact (N,. . . N,) with one another. At the sides of the stack of rolls, alternatingly at the left side and at the right side, a take-out leading roll (,) has been fitted at each intermediate roll (,). The arrangement of threading comprises at least one loop of a transfer belt (Z), which is penetrable by air and which runs outside the edge of the paper web (W) through at least two nips (N,. . . N,) in the calender. The transfer belt (Z) passes the lead-in strip (W,) of the paper web through at least one nip (N,. . . N,) in the calender. In addition to this, the arrangement of threading comprises at least one suction box (,), which is placed on a free run of the paper web (W) and of the transfer belt (Z) between intermediate rolls (,) and takeout leading rolls (,) in the calender. The lead-in strip is kept in contact with the transfer belt by means of the suction of a suction box.