公开(公告)号：EP0853705B1

公开(公告)日：1999-08-11

申请号：EP96933894.6

申请日：1996-09-16

Applicant: BELOIT TECHNOLOGIES, INC.

Inventor： BECKER, Rex, A. ,  LI, Alfred, C. ,  Burns, James R.

IPC: D21H23/36

CPC classification number: D21H23/36 ,  B05C3/18

Abstract: A coater head (22) is positioned beneath a backing roll (24) and has a housing divided into three sections (25, 27, 41). A first coating pond (28) is defined between an overflow barrier and a first wall (33). A converging plate (32) extends between the first wall (33) and a second wall (35), and converges toward the web, and a second pond (43) is defined between the plate and an end wall (39). Coating is introduced to both ponds. A low pressure cavity (37) is defined beneath the converging plate (32) and between the first wall (33) and the second wall (35). The cavity (37) opens (72) to the second pond (43), and draws air and excess coating from the second pond (43). The web is prewetted as it passes through the first pond (28), and coating deprived of entrained air is applied to the web in the second pond (43). Coat weight uniformity and increased machine speeds are thus achievable.

公开(公告)号：EP0853705A2

公开(公告)日：1998-07-22

申请号：EP96933894.0

申请日：1996-09-16

Applicant: BELOIT TECHNOLOGIES, INC.

Inventor： BECKER, Rex, A. ,  LI, Alfred, C. ,  Burns, James R.

IPC: B05C3 ,  B05C5 ,  D21H23

CPC classification number: D21H23/36 ,  B05C3/18

Abstract: A coater head (22) is positioned beneath a backing roll (24) and has a housing divided into three sections (25, 27, 41). A first coating pond (28) is defined between an overflow barrier and a first wall (33). A converging plate (32) extends between the first wall (33) and a second wall (35), and converges toward the web, and a second pond (43) is defined between the plate and an end wall (39). Coating is introduced to both ponds. A low pressure cavity (37) is defined beneath the converging plate (32) and between the first wall (33) and the second wall (35). The cavity (37) opens (72) to the second pond (43), and draws air and excess coating from the second pond (43). The web is prewetted as it passes through the first pond (28), and coating deprived of entrained air is applied to the web in the second pond (43). Coat weight uniformity and increased machine speeds are thus achievable.