公开(公告)号：WO1994004749A1

公开(公告)日：1994-03-03

申请号：PCT/GB1992001517

申请日：1992-08-19

Applicant: BELOIT TECHNOLOGIES, INC.

Inventor： BELOIT TECHNOLOGIES, INC. ,  GRAY, Paul, T. ,  ORMESHER, Eric

IPC: D21F09/00

CPC classification number: D21F1/48 ,  D21F9/006

Abstract: A multi-ply web forming apparatus is disclosed for forming a top ply on a base ply. The former includes a looped lower forming wire (16) for receiving the base ply thereon and a top looped forming wire (18) cooperating with and disposed above the lower wire for defining therebetween a generally horizontally disposed forming section (20) having a first (22) and a second end (24). A turning bar (26) defines a curved surface (28) for guiding the lower wire. A secondary headbox (30) ejects stock towards and onto the base ply. A curved dewatering shoe (34) is disposed beneath the lower wire (16) such that a portion of water from the top ply is ejected through the top wire (18). A vacuum slot (38) collects a portion of water upwardly away from the top wire. An inverted vacuum box (40) is disposed downstream relative to the vacuum slot (38) and a plurality of dewatering blades (44-56) disposed between a curved face (42) of the vacuum box and the top wire (18) guide the top wire therepast. A plurality of dewatering foils (58-61) are disposed on the opposite side of the wire relative to the blades such that the consistency of the stock forming the top ply is increased during passage thereof through the forming section while maintaining the consistency of the top ply uniform in a "Z" direction so that crushing of the resultant web is inhibited.

Abstract translation: 公开了一种用于在基层上形成顶层的多层腹板成形设备。 前者包括用于接收其底层的环状下成形线（16）和与下线配合并设置在下线上方的顶环形成线（18），用于在其间限定大致水平设置的形成部分（20），该成形部分具有第一（ 22）和第二端（24）。 转向杆（26）限定用于引导下线的弯曲表面（28）。 次级流浆箱（30）将库存朝着基底层排出。 弯曲的脱水鞋（34）设置在下线（16）的下方，使得来自顶层的水的一部分通过顶线（18）喷射。 一个真空槽（38）将一部分水从顶部的丝线向上收集。 倒置的真空箱（40）相对于真空槽（38）设置在下游，并且设置在真空箱的曲面（42）和顶部线（18）之间的多个脱水叶片（44-56）引导 顶部电线 多个脱水箔（58-61）相对于叶片设置在线的相对侧上，使得形成顶层的坯料的稠度在通过成形区段期间增加，同时保持顶部的稠度 在“Z”方向上的帘布层均匀，从而抑制所得纤维网的破碎。

公开(公告)号：EP0656084A1

公开(公告)日：1995-06-07

申请号：EP92918202.0

申请日：1992-08-19

Applicant: BELOIT TECHNOLOGIES, INC.

Inventor： GRAY, Paul, T. ,  ORMESHER, Eric

IPC: D21F1 ,  D21F9

Abstract: A multi-ply web forming apparatus is disclosed for forming a top ply on a base ply. The former includes a looped lower forming wire (16) for receiving the base ply thereon and a top looped forming wire (18) cooperating with and disposed above the lower wire for defining therebetween a generally horizontally disposed forming section (20) having a first (22) and a second end (24). A turning bar (26) defines a curved surface (28) for guiding the lower wire. A secondary headbox (30) ejects stock towards and onto the base ply. A curved dewatering shoe (34) is disposed beneath the lower wire (16) such that a portion of water from the top ply is ejected through the top wire (18). A vacuum slot (38) collects a portion of water upwardly away from the top wire. An inverted vacuum box (40) is disposed downstream relative to the vacuum slot (38) and a plurality of dewatering blades (44-56) disposed between a curved face (42) of the vacuum box and the top wire (18) guide the top wire therepast. A plurality of dewatering foils (58-61) are disposed on the opposite side of the wire relative to the blades such that the consistency of the stock forming the top ply is increased during passage thereof through the forming section while maintaining the consistency of the top ply uniform in a "Z" direction so that crushing of the resultant web is inhibited.

公开(公告)号：EP0656084B1

公开(公告)日：1996-11-27

申请号：EP92918202.0

申请日：1992-08-19

Applicant: BELOIT TECHNOLOGIES, INC.

Inventor： GRAY, Paul, T. ,  ORMESHER, Eric

IPC: D21F9/00

Abstract: A multi-ply web forming apparatus is disclosed for forming a top ply on a base ply. The former includes a looped lower forming wire (16) for receiving the base ply thereon and a top looped forming wire (18) cooperating with and disposed above the lower wire for defining therebetween a generally horizontally disposed forming section (20) having a first (22) and a second end (24). A turning bar (26) defines a curved surface (28) for guiding the lower wire. A secondary headbox (30) ejects stock towards and onto the base ply. A curved dewatering shoe (34) is disposed beneath the lower wire (16) such that a portion of water from the top ply is ejected through the top wire (18). A vacuum slot (38) collects a portion of water upwardly away from the top wire. An inverted vacuum box (40) is disposed downstream relative to the vacuum slot (38) and a plurality of dewatering blades (44-56) disposed between a curved face (42) of the vacuum box and the top wire (18) guide the top wire therepast. A plurality of dewatering foils (58-61) are disposed on the opposite side of the wire relative to the blades such that the consistency of the stock forming the top ply is increased during passage thereof through the forming section while maintaining the consistency of the top ply uniform in a 'Z' direction so that crushing of the resultant web is inhibited.