Abstract: A laminating roller assembly comprises a frame, a movable support supported by the frame, a laminating roller and a lift mechanism. The laminating roller is attached to the movable support. The lift mechanism is attached to the frame and is configured to move the movable support and the attached laminating roller relative to the frame. Additional embodiments of the invention are directed to a credential substrate laminator and a method of laminating a credential substrate using a credential substrate laminator.

Abstract: A moving belt conveyor dough press is provided with a pair of vertically opposing platens, at least one of which is movable toward and away from the other. A continuous belt is arranged to pass between the pair of platens, and to carry on an upper surface thereof, a supply of dough masses to be pressed by the platens. At least one of the platens is formed of a cast metal material, and an electrical resistance heating element is cast in place within the at least one platen.

Abstract: A calender and an arrangement for mounting calender rolls, the calender comprising at least two calender nips (1, 2) formed by at least two stacked rolls (11–14). The rolls are have bearing housings (3–6) by means of which the rolls (11–14) are stacked into roll pairs forming the calender nips (1, 2), and means (31, 32) connecting the bearing housings (3, 4 and 4, 5) of the rolls pairs with each other. At least two successive calender nips (1, 2) are arranged so that in the successive nips the mutual distance between the longitudinal axes of the lower rolls (12, 14) is smaller than the corresponding mutual distance between the respective upper rolls (11, 13) of the nips, whereby the disposition of the rolls (11–14) forms a V-shaped angle as seen from the end of the calender machinery and thus forms an operating area between the nips for changing the rolls. The rolls are combined into nips advantageously using heatable pull rods inserted through the bearing housings.

Abstract: Roll for smoothing paper webs including a hard roll core and an elastic covering layer provided on an outside of the core. The elastic covering includes an elastic matrix material, and is structured to operate within a temperature range between approximately 25° C. and 150° C. The elastic covering is further structured to operate with a nip frequency of between about 0.3 Hz and 5 Hz, and to be regionally compressible and to operate with a surface compression amplitude of between about 15 ?m and 50 ?m. The covering is further structured for a total dissipated energy of less than approximately 0.9J/cm3.

Abstract: In a process and apparatus for producing long plastic sheets by pressing molten plastic materials between the forming roller and the forming drum unit, the forming drum unit including a thin cylindrical sleeve supported from inside by a drum support unit and pressed against the outer surface of the forming roller to deform elastically in a curve along the outer surface of the forming roller as it rotates, thus maintaining a relatively long contact length.

Abstract: In an induction heating roller apparatus of the present invention, Rolling bearings 10 and a sliding bearings 14 are provided between drive shafts 2 of a roller body 1 and a support rod 9. When a trouble occurs in the rolling bearings 10, a rotational torque is transmitted from the drive shafts 2 through the rolling bearings 10 to the support rod 9. The sliding bearings 14 operate during the transmission of the rotational torque to the support rod 9, and the rolling bearings 10 slips relative to the support rod 9. The slip prevents that the support rod 9 co-rotates with the drive shafts.

Abstract: Hot stamping apparatus and embossing apparatus for the production of holographic images on a substrate web, each apparatus comprising a heated roll and an anvil each having trunnions at its end journalled for rotation in bearings in a frame with a cooling system for cooling the bearings for all the trunnions and for cooling the trunnions of the heated roll.

Abstract: Calender for a fibrous material web and method of operating a calender for a fibrous material web. The calender includes a first roll stack and a second roll stack each arranged in a common plane on a stanchion, each roll stack having a top deflection adjustment roll having a sleeve, a bottom deflection adjustment roll having a sleeve, and three intermediate rolls disposed between the top deflection adjustment roll and the bottom deflection adjustment roll, the uppermost the intermediate roll being fixedly mounted to the stanchion. The calender further has a deflection adjustment device having a sleeve lift supporting each sleeve, at least one deflection adjustment device facing the first roll stack in a first operative position and facing the second roll stack in a second operative position. A nonrotatable bracket supporting each deflection adjustment device and fixedly mounted to the stanchion is also provided.

Abstract: Reformation techniques and apparatus. Typically employed to permit separate printing and finishing of multiple webs of paper, these techniques and apparatus utilize or provide heat and, in some cases, initial tension, to change dimensions (including repeat length) of the paper of one or more webs. Webs dimensionally-reformed in accordance with the techniques typically do not require subsequent variation of tension to maintain appropriate dimension, permitting any such tension variation to occur solely to enhance other aspects of the finishing processes.

Abstract: Method in calendering of a paper web in which the paper web is conveyed through a calendering nip formed by two calender rolls, at least one of which is a soft-faced roll having a coating of a resilient or polymeric material, or over which a belt of resilient or polymeric material is directed and passed through the nip. The profile of the calendering nip is controlled to compensate for defects in the web entering the calender. The profile control is accomplished by changing the diameter of the soft-faced roll zonewise by a profile control device arranged inside the body and performing temperature profiling. The profile control device include temperature control elements such as heating elements located in zones for heating a heat transfer medium such as air supplied into the body.

Abstract: A method and apparatus for producing calendered paper by an on-line manufacturing system comprising at least a paper machine and a multi-nip calender. The method comprises following steps: removing water from a formed paper web by pressing, drying the pressed paper web by at least one dryer, calendering the dried web by the multi-nip calender, measuring a cross-machine moisture profile or a variable relative thereto, and altering the moisture of the web so that the moisture profile of the web in the cross-direction is even when the web enters the first nip of the calender.

Abstract: Calender for the treatment of a paper web including a roll stack of at least three rolls and with least one double-soft nip. The double-soft nip(s) are formed by two rolls, each with an elastic surface layer. At least one of the rolls forming the double-soft nip is heated. In a process using the calendar to treat a material web, the web is introduced into a roll stack having at least two rolls formed with an elastic surface layer over a rigid core, agglomerated in an elastic double-soft nip between the two rolls, heated to introduce energy into the material web and promote agglomerating, and smoothed in the elastic double-soft nip.

Abstract: Roll for a paper calender. The roll includes a core having opposed end faces and a barrel intermediate the opposed end faces, the barrel having a barrel region. Also included is an elastic cover extending over a working width of the core and a plurality of roller pins, each roller pin engaging a respective end face and having a pin region. Also provided is a temperature control device adapted to supply heat to and/or dissipate heat from the pin regions to a first temperature, and further adapted supply heat to and/or dissipate heat from the barrel region to a second temperature, wherein the first and the second temperatures are different. The present invention also provides a calender that employs such a roll having an elastic cover. Additionally provided is a process for operating such a roll having an elastic cover.

Abstract: Hot stamping apparatus and embossing apparatus for the production of holographic images on a substrate web, each apparatus comprising a heated roll and an anvil each having trunnions at its ends journalled for rotation in bearings in a frame with a cooling system for cooling the bearings for all the trunnions and for cooling the trunnions of the heated roll.

Abstract: A laminating device for manufacturing a laminated printed circuit board comprising a frame that supports sets of heated rollers along the path of movement of said laminated circuit boards while they are being manufactured. Each of said sets of rollers including two rollers. The rollers on one side of the path of travel of the printed circuit board blank are driven to move the blank through the device. The rollers are heated, and means are provided for selectively moving the rollers in each of said sets of rollers toward and away from each other to apply pressure to said printed circuit board blank.

Abstract: A method and apparatus for controlling a deflection roll for compressing a web of material includes a shaft and a hollow roll disposed around the shaft. The hollow roll includes a working surface where the hollow roll is engageable with a hard roll along an entire length of the working surface. At least two bearing devices are disposed within the roll and are substantially aligned with the working surface of said roll. Each bearing device has a predetermined positive bearing clearance facilitating displacement of each outer contact surface relative to a respective inner contact surface of each bearing. The deflection roll further includes a mechanism for displacing the working surface of the roll with a fluid where the displacing mechanism is disposed external to the bearing devices.

Abstract: Apparatus for drying receiver sheets prior to such receiver sheets receiving electrophotographic images, including at least one set of preconditioning rotatable rollers with each preconditioning rotatable roller in the set touching an opposing preconditioning rotatable roller to form a nip, wherein at least one of the preconditioning rotatable rollers in the set is formed from zirconia ceramic or zirconia composite; and the apparatus heating at least one of the surfaces of the preconditioning rollers of the set to dry receiver sheets as each passes through the nip.

Abstract: A heat seal wheel for use with a heat sealing apparatus associated with a continuous packaging machine, for forming a longitudinal seal in a flat sheet of flexible film. The heat seal wheel is characterized by a planar heater comprising a laminar resistive heating element sandwiched in between a top layer and a bottom layer of a thermally conductive and electrically insulative material. The top layer is bonded to the bottom surface a bearing disk, in contact with and supporting a rotating heat seal wheel for conductively heating the seal wheel and producing a heat seal in the seams of a moving web of plastic film.

Abstract: A paper machine roll, in particular for a soft calender or supercalender, which includes a metal frame, roll ends, and shafts. The frame is coated with a polymer coating over at least a middle area or central region thereof while lateral regions may optionally remain uncoated. In order to equalize a difference in temperature between the roll ends and the optionally non-coated lateral regions of the metal frame, on one hand, and the coated central region area of the roll, on the other hand, an arrangement for equalizing the difference in temperature is provided by heating the roll ends and the optionally non-coated lateral regions of the metal frame.

Abstract: A calender has at least four rollers that are located one above the other. The rollers rotate about roller bearings. The calender is located within a paper-making machine. Each of the rollers is rotatably driven by an independent driving mechanism. At least two of the rollers are heatable. At least 40% of the rollers are soft rollers. The outer coverings of the soft rollers are made of a synthetic material that is not sensitive to marking so that a doctor blade can be applied to the soft rollers. The calender includes a device that inserts a paper guide strip into the calender.

Abstract: A roller arrangement has a magnetic circuit that includes two rollers. The magnetic circuit consists of a cylindrical magnetic core, several poles axially distributed on the magnetic core, a cylindrical exciter and control windings arranged between these poles, a magnetic shell that encloses the whole circumference of one roller and is made of two parts separated by a ring-shaped secondary air gap, and a continuous magnetic shell in the axial direction arranged at the outer circumference of the other roller. When used to process webs of material in the textile, paper, plastic and metallurgical industries, this electromagnetic roller arrangement achieves high quality standards with a high productivity.

Abstract: A roller has a rotary hollow cylinder through which extends a non-rotary crosshead. The hollow cylinder is supported on the crosshead by two opposite rows of hydrostatic supporting elements. When the roller is operated at particularly low linear pressures in the roll gap, a uniform linear force over the whole width of the paper web is exerted in the row of supporting elements opposite to the roll gap, causing an increase in the hydraulic pressures required in the row of supporting elements that faces the roll gap, until said pressures reach a range in which perfect operation of the supporting elements is ensured.

Abstract: A calender for webs of paper includes a hard roller having a smooth outer surface. A soft roller is disposed adjacent to the hard roller and forms a roll gap therebetween. The soft roller has a coating made of flexible plastic. The coating includes an inner layer and an outer layer. The inner layer is made of a first plastic material and the outer layer is made of a second plastic material. The outer layer has lesser flexibility and greater hardness than the inner layer. The outer layer has an outer surface having wear properties such that under normal operating conditions the average roughness R.sub.a does not exceed 0.5 .mu.m.

Abstract: A paper calendering apparatus comprises a nip section for advancing paper sheets formed by at least a pair of rollers, one of which is a metal roller and the other of which is a resilient roller or a metal roller, wherein a gap of equal spacing is formed along the entire width of the roller face at the nip section of the pair of rollers, and is set to less than the thickness of the paper sheet to be finished.