Apparatus for assisting the transfer of a web to a drying sectio

Details Apparatus for assisting the transfer of a web to a drying sectio Apparatus for assisting the transfer of a web to a drying sectio

1986-07-18

1987-10-13

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

Rotary drums or receptacles

34120, 162202, F26B 1308

Patent

active

046989196

ABSTRACT:
An apparatus is disclosed for assisting the transfer of a web disposed contiguous relative to a transfer felt such that the web is transferred from a lead-in roll disposed adjacent to a press section to a first dryer of a papermaking machine dryer section. The apparatus includes an intermediate support roll disposed between the lead-in roll and the first dryer such that the transfer felt is disposed between the web and the intermediate roll. A first transfer box is disposed between the lead-in roll and the intermediate roll such that the transfer felt is disposed between the web and the first transfer box. The first transfer box is oriented relative to the transfer felt such that a partial vacuum is generated between the first box and the transfer felt for drawing the web into close conformity with the transfer felt between the lead-in roll and the intermediate roll. A second transfer box is disposed between the intermediate roll and the first dryer such that the transfer felt is disposed between the web and the second box. The second box is oriented relative to the transfer felt such that a partial vacuum is generated between the transfer felt and the second box for drawing the web into close conformity with the transfer felt between the intermediate roll and the first dryer such that any tendency of the web to droop relative to the transfer felt between the lead-in roll and the first dryer is inhibited.

REFERENCES:
patent: 4016032 (1977-04-01), Kankaanpaa
patent: 4359828 (1982-11-01), Thomas
patent: 4551203 (1985-11-01), Eskelinen

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