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1. 发明专利

CA2021941A1 METHOD OF MANUFACTURING A COMPRESSIBILITY GRADIENT IN PAPER 未知
公开(公告)号：CA2021941A1
公开(公告)日：1991-01-27
申请号：CA2021941
申请日：1990-07-25
申请人： BELOIT CORPORATION
发明人： KELLER, SAMUEL F.
IPC分类号： B31F1/12 , D21G1/00 , D21H23/00 , D21H23/56 , D21H25/14
摘要： The method includes the steps of coating the peripheral surface of a roll with a film of plasticizer. An offset roll disposed adjacent to the roll is rotated such that the roll and the offset roll define therebetween a transfer nip so that a film of the plasticizer is transferred to the offset roll. The web is moved past the offset roll such that the web contacts the offset roll downstream relative to the transfer nip so that the film of the plasticizer is offset onto the web. The web is then passed with the offset coating of plasticizer through a calendering nip such that between the offset coating of the web and the subsequent calendering of the web with the offset coating, the plasticizer is permitted to uniformly and controllably penetrate into the web such that the Z-directional compressibility of the web is controlled prior to the web extending through the calendering nip.

2. 发明专利

CA2024542A1 APPARATUS AND METHOD FOR REMOVING FLUID FROM A FIBROUS WEB 未知
公开(公告)号：CA2024542A1
公开(公告)日：1991-03-07
申请号：CA2024542
申请日：1990-09-04
申请人： BELOIT CORPORATION
发明人： KELLER, SAMUEL F.
IPC分类号： F16C13/00 , B30B9/20 , D21F3/02 , D21F3/08
摘要： An apparatus (10) is disclosed for removing fluid from a fibrous web. The apparatus (10) includes a press member (12) and a blanket (14) which cooperates with the press member (12) for defining therebetween an elongate pressing section (16) such that the web (W) is pressed between the press member (12) and the blanket (14) during passage through the pressing section (16). An elongate press shoe (18) urges the blanket (14) towards the press member (12) such that when the web (W) passes through the pressing section (16), fluid is removed from the web. A heater (20) is disposed adjacent to the press member (12) for transferring heat to the web such that when the web (W) passes through the pressing section (16), the web is subjected for an extended period to increase pressure and temperature so that water vapor generated within the pressing section (16) during the passage of the web (W) through the pressing section forces the fluid in the liquid phase away from the web. The press member (12) has an outer surface (22) which cooperates with the web (W). The outer surface (22) of the press member (12) defines a plurality of grooves having a width wihtin the range 1 to 1,000 microns for the reception therein of steam and water expelled from the web (W) during passage of the web through the pressing section (16).

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