Abstract
In 1986, Thomas Tait and Sons (now Tait Paper) commissioned and started a new high-capacity, twin-wire, fine-paper machine PM4. At the design stage consideration was given to recent developments in the area of cross direction (CD) moisture and caliper control. From experience gained with the Impact electric infra-red (IR) moisture profile control installation on an existing machine the company decided on a similar system for PM4. In the case of caliper profile control, from a choice of systems available, the new Impact Therma-Jet system which uses low-volume, high-velocity heated air was chosen. Both systems are linked to an Accuray 1180 microcomputer system with associated measurement sensors for basis weight, moisture content, filler content, caliper and colour. They share a common communications interface, thereby reducing cost and complexity. Net savings from the moisture control system amounted to 245,387 pounds in 1987 with a simple payback period of 0.96 years. The figures for the caliper control system were 122,649 pounds averaged for 1987/88, and 1.88 years simple payback. Both installations have proved very effective in reducing the inherent variability in CD moisture and caliper, the corrected profiles for which are now uniform within close tolerances. This has produced savings in wastage (broke),
More>>
Citation Formats
None.
Cross direction (CD) profile correction of moisture and caliper on a paper machine. A demonstration at Tait Paper [Inverurie (GB)].
United Kingdom: N. p.,
1991.
Web.
None.
Cross direction (CD) profile correction of moisture and caliper on a paper machine. A demonstration at Tait Paper [Inverurie (GB)].
United Kingdom.
None.
1991.
"Cross direction (CD) profile correction of moisture and caliper on a paper machine. A demonstration at Tait Paper [Inverurie (GB)]."
United Kingdom.
@misc{etde_10115058,
title = {Cross direction (CD) profile correction of moisture and caliper on a paper machine. A demonstration at Tait Paper [Inverurie (GB)]}
author = {None}
abstractNote = {In 1986, Thomas Tait and Sons (now Tait Paper) commissioned and started a new high-capacity, twin-wire, fine-paper machine PM4. At the design stage consideration was given to recent developments in the area of cross direction (CD) moisture and caliper control. From experience gained with the Impact electric infra-red (IR) moisture profile control installation on an existing machine the company decided on a similar system for PM4. In the case of caliper profile control, from a choice of systems available, the new Impact Therma-Jet system which uses low-volume, high-velocity heated air was chosen. Both systems are linked to an Accuray 1180 microcomputer system with associated measurement sensors for basis weight, moisture content, filler content, caliper and colour. They share a common communications interface, thereby reducing cost and complexity. Net savings from the moisture control system amounted to 245,387 pounds in 1987 with a simple payback period of 0.96 years. The figures for the caliper control system were 122,649 pounds averaged for 1987/88, and 1.88 years simple payback. Both installations have proved very effective in reducing the inherent variability in CD moisture and caliper, the corrected profiles for which are now uniform within close tolerances. This has produced savings in wastage (broke), drying energy costs and raw materials costs which have exceeded the projections made at the machine design stage. These projections were based on experience with existing paper machines but allowed for the performance improvements expected from a more modern design of paper machine. (author).}
place = {United Kingdom}
year = {1991}
month = {Mar}
}
title = {Cross direction (CD) profile correction of moisture and caliper on a paper machine. A demonstration at Tait Paper [Inverurie (GB)]}
author = {None}
abstractNote = {In 1986, Thomas Tait and Sons (now Tait Paper) commissioned and started a new high-capacity, twin-wire, fine-paper machine PM4. At the design stage consideration was given to recent developments in the area of cross direction (CD) moisture and caliper control. From experience gained with the Impact electric infra-red (IR) moisture profile control installation on an existing machine the company decided on a similar system for PM4. In the case of caliper profile control, from a choice of systems available, the new Impact Therma-Jet system which uses low-volume, high-velocity heated air was chosen. Both systems are linked to an Accuray 1180 microcomputer system with associated measurement sensors for basis weight, moisture content, filler content, caliper and colour. They share a common communications interface, thereby reducing cost and complexity. Net savings from the moisture control system amounted to 245,387 pounds in 1987 with a simple payback period of 0.96 years. The figures for the caliper control system were 122,649 pounds averaged for 1987/88, and 1.88 years simple payback. Both installations have proved very effective in reducing the inherent variability in CD moisture and caliper, the corrected profiles for which are now uniform within close tolerances. This has produced savings in wastage (broke), drying energy costs and raw materials costs which have exceeded the projections made at the machine design stage. These projections were based on experience with existing paper machines but allowed for the performance improvements expected from a more modern design of paper machine. (author).}
place = {United Kingdom}
year = {1991}
month = {Mar}
}