摘要:
An apparatus for applying a treatment fluid on a web of material includes a run-off surface extending transversely over a web to be treated. The run-off surface slopes down obliquely onto the web and has an upper portion upon which treatment fluid applied thereto flows down over the run-off surface onto the web via the lower edge thereof. A flow homogenizing baffle is provided on the run-off surface. The baffle is formed from closely spaced deflection elements that even out any irregularities that exist in the fluid film flowing over the upper portion of the run-off surface.
摘要:
A jig for the application of treatment liquor on a web of material comprises a reservoir tank formed to receive the total quantity of liquor required for application during at least one treatment pass of the web and an applicator system arranged inside the jig for proportioning the application of liquor onto the web, with the reservoir tank supplying the applicator system with treatment liquor.
摘要:
A hydrostatically supported roll has several hydrostatic support elements supporting the inner circumference of a rotating hollow roll. The hydrostatic elements are supported on the stationary crosshead that extends through the rotating roll to form a clearance space therewith. Each hydrostatic element has support pockets supplied with a first pressurized fluid via choke canals and branch lines connected to a flow-controlled pump delivering a constant volume of first pressurized liquid, regardless of the counterpressure in the support pockets. The first pressurized liquid fed to the support pockets is temperature-controlled. The support pockets are separated from essentially closed pressure chambers, which are supplied with a second pressure-controlled pressurized liquid from separate feedlines for pressing the hydrostatic elements against the inner circumference of the hollow roll to support same. The second pressurized liquid is not communicated to the inner circumference of the hollow roll. Therefore, independent of any pressure change in the pressure chambers, the same quantity of first pressurized liquid passes over the edges of the support pockets to ensure that the amount of heat transferred to the inner circumference of the hollow roll remains constant.
摘要:
A wet press of a paper-making machine includes a pair of rolls defining a roll gap through which the paper to be treated and belt-shaped felt are simultaneously conducted. The felt is guided in a closed loop path by additional rolls which include a tightening roll. The tightening roll can be tilted to reduce roll vibrations by tightening the felt to set vibratory marks formed in the felt at an angle relative to the transverse width of the felt and the roll gap. A controllable positioning device is provided which includes a motor operated by a controller during predetermined time intervals or as a function of actual vibrations sensed at the pair of rolls forming the roll gap to automatically vary the tilt angle.
摘要:
A temperature measuring device for a rotating roll comprises a housing with guide rollers around which a belt is looped and held under tension by an idler roll. One boundary of the housing is arched concavely in accordance with typical roll diameters to enable the blet to run freely in this region outside the housing and press against a roll surface in a looping region to drive the belt as the roll rotates. The inner side of the belt facing away from the roll may be blackened and the energy radiated therefrom may be measured by a radiation pyrometer to determine the temperature of the roll.
摘要:
A liquid, foam or paste treatment medium is applied to a textile or similar web as the web is led through a gap in which the web is pressed resiliently against an opposing face in an area extending over the width of the web with non-uniform pressure by, for example, several adjacent cushions that are independently inflatable. The non-uniform pressure serves primarily to achieve uniform treatment, in particular, uniform coloring, despite the non-uniform conditions existing over the web width. The non-uniform pressure may also be used for imprinting patterns on the web.
摘要:
A vertical calender arrangement comprises a controllable-deflection top roll, a controllable-deflection bottom roll and intermediate rolls arranged between top and bottom rolls. The top roll and the bottom roll are each provided with a power drive.
摘要:
A device for removing moisture from a continuously advancing textile web by suction. A suction slit which reaches crosswise across the textile web is provided, which is delimited on one side by a slide surface, on the other side by a roll. On the side facing the roll, the slide crosspiece has a concave recess, into which the roll partly fits. At its edge, facing the roll, the slide crosspiece forms a tongue-like projection, which extends over the top of the roll, almost to the vertex of the roll.
摘要:
Carpet material with at least a proportion of uncleaned used carpets is shredded to form a fiber-like wooly mass. The carpet material contains a thermoplastic binder with a low melting point, for example polypropylene, which can be derived from the used carpets or be added. Furthermore, a duroplastically hardening binder, for example phenolic resin, is added to the carpet material. The carpet material is compressed to form the molded part or panel with these two binders, at a temperature which lies above the plasticizing point of the thermoplastic binder, but below the plasticizing point of any other thermoplastic components of the carpet material.
摘要:
A hydraulically supported roll includes a stationary crosshead extending through a rotatable hollow roll, which is heated at its inner and outer circumferences. A thermostatic control and regulating device is provided to keep the temperatures at the inner circumference and the outer circumference of the hollow roll at the same level during the heatin-up and/or cooling-down phase.