摘要:
Calender for the treatment of a paper web, which comprises at least one roll stack that can be loaded from the end, has a stack plane and comprises end rolls and at least one intermediate roll, which comprise hard and soft rolls for forming working nips between a hard and a soft roll in each case, and some of the rolls being heatable, the roll stack having at least one intermediate roll, on whose periphery, on one roll stack side, two rolls that can in each case be displaced with respect to the stack plane bifurcate the roll stack.
摘要:
A calender for treating a paper web, having at least one roll stack capable of being loaded from the end and in each case comprising a top and bottom end roll and a plurality of intermediate rolls, which are jointly arranged in a roll stack plane, and the rolls including hard and soft rolls in order to form operating nips in the form of soft nips, wherein each soft roll which forms an intermediate roll has a greater diameter than a soft roll which forms an end roll.
摘要:
A textile web, for example, a carpet web, is provided with a patterning agent including a thickening agent and subsequently steamed in a steamer. The agent residues remaining on the textile web are at least partially removed by mechanical means, and cleaned and decolorized in a cleaning unit, leaving a virtually pure thickening agent which can be reused for preparing a new batch of patterning agent in the batching tank.
摘要:
A roller with controllable sag is provided with a revolving hollow roller and a non-rotating crosshead that crosses the hollow roller along its length and on which the hollow roller is supported by a series of supporting elements that are actuated by a pressure medium. Separate supply lines (13) lead to the supporting element and open out into a collection head (40) at the end (10') of the crosshead, to which the outer connection lines (53) are connected. The connection head (40) comprises a double-disc rotary slide valve (50) by which the lines (13, 53) can be interrupted and which in the closed state can be separated at a separation surface (47). The individual discs (51, 52) of the double disc rotary slide valve (50) keep both the supply lines (13) and connection lines (53) closed, thus facilitating replacement of the roller as and when required.
摘要:
The roller is provided for pressure treatment of a strip of paper, textile, plastic film, sheet metal or similar material. It includes a hollow roller made of a fiber-reinforced synthetic resin material, and a cross-beam which passes through the hollow roller lengthwise. The cross-beam is mounted at its ends, in external supports, so as not to rotate. Hydrostatic support elements are arranged on the cross-beam on the side on which pressure is exerted. The elements can be pressed against the inside circumference of the hollow roller by means of a hydraulic fluid. The support elements have a length not exceeding 20 cm in the longitudinal direction of the hollow roller, follow each other closely in the longitudinal direction of the cross-beam, and can all be controlled independently of one another.
摘要:
The small finishing installation (100) for continuous strips of textile fabric includes a steam-filled housing (2) into which feed rolls (5) can be introduced at each end. Located in the housing are sets of fabric-handling equipment disposed symmetrically with respect to the vertical plane (40) running across the middle of the housing (2). Disposed in this vertical plane (40) is a squeezer unit (37) from which the strip of fabric can pass, against each feed roll (5), through a treatment bath (30) and then over an array (20) of guide rollers disposed above an open tank (26). The continuous strip of fabric (10) can be wound back and forth between the feed rolls (5), thus making it possible to carry out a variety of different treatments.
摘要:
In a "floating" roller with a fixed cross-beam and a rotating hollow roller, semicylindrical longitudinal chambers are separated and divided off by longitudinal seals and end cross-seals in the space between the crosshead and the hollow roller. At least the longitudinal chamber on the roller nip side can be filled with a compressed gas. The longitudinal seals and the end cross-seals are doubled and are made of closely juxtaposed pairs of sealing strips or. Into the spaces between the sealing strips can be introduced a sealing liquid which seals the longitudinal chambers. Sealing liquid which has penetrated into the longitudinal chambers is continuously removed.
摘要:
A widening device for increasing the width of a moving web of material comprises a rotatable profiled roller, the outer surface of which defines a plurality of radial projections and recesses distributed along the length of the roller and first and second co-operating rollers rotatable at the same speed as the profiled roller. The first and second co-operating rollers define projections and recesses complementary to those of profiled roller and define first and second treatment nips which serve to increase the width of a web of material passed therethrough. The projections on the co-operating roller defining the second treatment nip extend more deeply into the recesses of the profiled roller than do the projections on the co-operating roller which defines the first treatment nip so that the web of material is stretched gradually over two stages with the stretching effect being uniform across the entire width of the web.
摘要:
A roll with a revolving hollow cylinder which forms the working roll circumference, and a stationary crosshead penetrating said hollow cylinder lengthwise and leaving clearance all around to the inner circumference of the hollow cylinder in which the hollow cylinder can shift radially as a whole, e.g., can drop under its own weight on to the top side of the crosshead. A damping element is provided to damp this sinking movement before contact is made. It features a piston which plunges into a cylinder filled with hydraulic fluid and initially open to the top. During the plunging action, the hydraulic fluid is displaced out of the cylinder and flows away, in a throttled state, between the piston and the cylinder and/or through especially provided choke bores, so that the damping effect is attained.
摘要:
In a double-belt press for the manufacture of wood chip boards and the like having a width less than the nominal working width of the double-belt press, the forming belts are held in contact with the support structure so as to ensure heat transfer in the edge portion of the pressing zone extending beyond the edge of the filling which produces the boards to the region near the edge of the pressing zone. In this edge portion, an edge filling composed of unbonded particles is compressed on a compressible rotating belt.