Inclined Wire

Sheet formation on an inclined wire section is performed in the area where the wire is covered by a box filled with the suspension and is usually under pressure (Fig. 6.38D). Here the wire is supported by some type of forming board. The pressure under the forming board can be controlled. This type of forming unit is for low machine speeds and operates with low consistencies of down to about 0.01 %. It is used for the production of special papers and nonwovens. 

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This aqueous suspension of fibers is formed into a mat in the next step, called formation. Here the slurry is fed to a head box that evenly disperses a layer on a porous belt where the fibers are collected. At the same time the water is allowed to drain off or is drained via vacuum assist. The speed of the belt, in comparison to the feed rate of the liquid from the head box, will determine the basis weight of the material. The various types of equipment used include fourdriniers, rotoformers, and inclined wires. As the mat leaves the formation step, the web is still 60 to 80 wt% water and has limited strength [24]. 

Inchned wire, forming the web on a straight inclined wire supported by dewatering boxes with a controlled height and pressure of the suspension in the forming zone. 

Fig. 6.86 Inclined-wire forming technology (source Voith).

Fig. 6.88 Machine with inclined wire former and through air dryer for tea bag paper production (source Voith).

Figure 2. A view from the wetlay headbox and inclined wire forming conveyor into the oven showing the dewatered wetlay mat.

The animal is placed on the inclined (at an angle of — 30°C) top surface of the wire cage with its head facing downward. It should turn 180° and face uphill, in which case the space on the form should be left blank. If this occurs, a negative sign should be recorded in the blank. 

K chlorate, charcoal and dextrin. The fuse (to be ignited) is inserted thru the open end of the tube and is held in place by an insert with inclined prongs (fuse retainer). A pull on the wire at the closed end ignites the friction pdr which in turn fires the fuse... 

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