Abstract:
A planar element is disclosed for use in a papermaking machine. The planar element includes a composite of multiple layers, with at least some of the layers including resin impregnated fabrics including basalt fibers.
Abstract:
A planar element for use in a papermaking machine comprising a synthetic construction incorporating nanoparticles in a polymeric resin matrix.
Abstract:
An apparatus for doctoring a roll surface (5) including a pivot bar (12) adapted to be mounted on a doctor back (20) and which the pivot bar defines an upwardly projecting fulcrum (14). A first shelf (26) projects forwardly beyond the fulcrum (14) and a top plate (28) pivotally supported on and projecting forwardly beyond the fulcrum (14) overlies the first shelf (26). The top platen (28) is held downwardly against the fulcrum (14). Blade support members (36) are carried by and cooperate with the top plate (28) to define forwardly open slots (40), which slots (40) are configured and dimensioned to receive a rear edge of a forwardly projecting doctor blade (42). The blade support members (36) have rearwardly projecting second shelves (44) underlying the first shelf (26) and a loading mechanism (50) is interposed between the first and second shelves (26, 44) for pivoting the top plate (28) on the fulcrum (14) in a direction urging the doctor blade (42) against the roll surface (5).
Abstract:
A multilayer composite doctor blade (10) has a side edge configured for application to the surface of a rotating roll in a paper making machine. The doctor blade has an inner core (28) and intermediate layers (30, 32). The doctor blade may also include outer layers. The inner core is predominantly polymeric material. The intermediate layers on opposite sides of the core include reinforcing fibers. The side edge of the doctor blade has an abrasiveness as measured by ASTM test method D5181-91 of between about 4.0 to 5.0.
Abstract:
A doctor blade holder is disclosed that includes first and second members (124, 120) as well as position adjustment means (132, 134). The first member (124) includes a plurality of first member mounting structures (128) that are integrally formed with the first member (124) and are mutually spaced apart from one another along an elongated direction that is parallel with an elongated edge of a doctor blade. The second member (120) is coupled to the first member (124), at least in part, by a plurality of second member mounting structures (130) that are mutually spaced apart from one another along the elongated direction that is parallel with the elongated edge of the doctor blade. The position adjustment means (132, 134) is for adjusting the relative positions of the first member (124) and the second member (120) while the first member(124) is coupled to the second member(120), at least in part, by the plurality of first member mounting structures (128) and the plurality of second member mounting structures (130).