 Fixation device |
| OF THE DRAWINGS FIG. 1 discloses the principal structure of a fixation device according to the ... |
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| Extended nip-press |
| The object of the present invention is to avoid the drawbacks that have previously been mentioned ... |
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| Rotatable slot nozzle air bar |
| The general purpose of the present invention is an air bar with a directionally rotatable slot ... |
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| Web dryer apparatus having ventilating and impingement air bar assemblies |
| The present air bar finds particular utility for those situations where the coatings are quite ... |
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| Method for making a strong, bulky, absorbent paper sheet using restrained can drying |
| . It is an object of the present invention to provide a process for making a low density paper base ... |
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| Arrangement in a dryer for a fibre web |
| We claim: PG,11 1. An arrangement in a dryer for a fibre web, the arrangement comprising: two ... |
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| Papermachine clothing |
| We claim: 1. Papermachine clothing consisting essentially of partially fused particles, and a ... |
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Compact press at the web transfer position of a paper making machine
| Details |
Inventors: Stotz, Wolf-Gunter; Hund, Helmut;
Assignee: Escher Wyss Limited (Zurich, CH)
Primary Examiner: Fisher; Richard V.
Assistant Examiner:
Attorney, Agent or Firm: Kleeman; Werner W.
A paper-making machine roll press or mill comprising a suction press roll over which there is trained a press felt, and which simultaneously serves for the direct transfer of a web of paper from a wire. A take-off press roll cooperates with the suction press roll to form a press station. The take-off press roll serves for the transfer of the paper web from the suction press roll and for the delivery thereof to a downstream part of the paper-making machine. An additional press station is provided between the suction press roll and the take-off press roll and is formed by a contact-pressure roll over which there is trained a felt. The contact-pressure roll comprises a hydrostatic flexure adjusting or controlled deflection roll having a shell mounted to be rotatable about its lengthwise axis and displaceable in the press direction relative to a fixed or stationary support. |
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DETAILED DESCRIPTION Hence, it is a primary object of the present invention to provide a new and improved construction of roll press which is not associated with the aforementioned drawbacks and limitations of the prior art proposals.
Another significant object of this invention is to provide a roll press of the previously mentioned type which, while maintaining practically unchanged the spatial requirements, enables the press capacity, i.
e.
the de-watering effect, to be greatly increased in comparison to prior art presses.
Still a further significant object of the present invention aims at the provision of a papermaking machine roll press or roller mill which is extremely reliable in operation, relatively economical to manufacture, possesses relatively small spatial requirements in comparison to the de-watering effect which can be accomplished thereat, particularly in comparison with conventional roll presses, and furthermore, is relatively easy to use, not readily subject to breakdown or malfunction, and requires a minimum of servicing and maintenance.
Now in order to implement these and still further objects of the invention which will become more readily apparent as the description proceeds, the roll press according to the present invention is manifested by the features that there is provided an additional press station between the suction press roll and the take-off press roll.
This additional press station comprises a contact-pressure roll over which there is trained a felt, the contact-pressure roll being in the form of a hydrostatic flexure adjusting roll or controlled deflection roll having a shell which is mounted to be rotatable about its lengthwise axis and which is displaceable in the pressing direction relative to a fixed support.
The flexure adjusting roll or controlled deflection roll which is used in this case is known from U.
S.
Pat.
Nos.
3,802,044 and 3,885,283, the disclosures of which are incorporated herein by reference, and not only has the property of delivering a relatively uniform contact-pressure force, but also the advantage of not requiring any external contact-pressure mechanism
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Manufacturing Materials 
