Abstract: A device for dosing and distribution of hotmelt on a substrate is provided. The device includes substrate throughput, hotmelt supply, at least one hotmelt application position with a stencil, hotmelt distribution and a squeegee device. The hotmelt distribution includes a hotmelt dispensing nozzle. A dosing unit and drive for moving the dosing unit to and fro along said squeegee device are also provided. The hotmelt dispensing nozzle is fitted on the movable dosing unit.

Abstract: Squeegee device for applying printing medium to a substrate, interacting with a squeegee element which is made at least partially from a magnetizable material and can be moved between an operating position and an at-rest position, which squeegee device comprises a support frame for delimiting an operating space, inside which the operating position of the squeegee element is located, and magnetic means which are provided on the support frame for generating a magnetic field at the location of a designated bearing-wall part of the support frame in order to pull the squeegee element onto the bearing-wall part in the at-rest position, in which device switching means are provided, which interact with the magnetic means in order to apply the magnetic field at the location of the bearing-wall part in a switched-on position and to substantially eliminate the magnetic field at the location of the bearing-wall part in a switched-off position.

Abstract: Screen-printing device for printing a substrate (6), comprising at least one printing station (2) for a removable screen (10) and a printing-medium feed; and substrate-conveying means (4, 5) for guiding a substrate (6) past the printing station (2) in which device the following are also provided: a movement mechanism for moving the screen (10) and the substrate-conveying means (4, 5) with respect to one another between a printing position and a free position, a shield (15) which can move between an at-rest position and a shielding position, in which shielding position the shield (15) forms a barrier between the screen (10) and the substrate-conveying means (4, 5) or a substrate (6) which is being guided over these means, and liquid-discharge means (20) for discharging liquids which are deposited on a shield (15) which is located in the shielding position.

Abstract: A device for dosing and distribution of hotmelt on a substrate is provided. The device includes substrate throughput means, hotmelt supply means, at least one hotmelt application position with a stencil, hotmelt distribution means and a squeegee device. The hotmelt distribution means includes a hotmelt dispensing nozzle. A dosing unit and drive means for moving the dosing unit to and fro along said squeegee device are also provided. The hotmelt dispensing nozzle is fitted on the movable dosing unit.

Abstract: Rotary screen-printing device for printing a substrate, includes at least one printing station for a removable stencil, a printing-medium feed and a squeegee, substrate-conveying means for guiding a substrate past the printing station, first and second stencil-bearing means for supporting opposite ends of the stencil, and first and second support means for supporting opposite ends parts of the squeegee. The second support means includes a moveable support member which can move between a position in which it supports the squeegee and a position in which it does not support the squeegee. The first support means being designed in such a manner that it is able to hold the squeegee in a floating position if the support member of the second support means is in the non-supporting position. The first support means includes a support member and a delimiting member.

Abstract: In a method for dyeing textile material with one or more fiber-reactive disperse dyestuffs in a supercritical or almost critical fluid, such as CO2, which textile material is selected from the group consisting of silk, wool and cellulose, combinations thereof and combinations of one or more thereof with synthetic fibers, such as polyester and/or polyamide, the relative humidity of the fluid is in the range from 10-100% during dyeing. Textile materials which have been dyed with the aid of this method have properties which are at least equal to those of textile materials of the same type which have been dyed in the traditional manner using water-soluble dyestuffs. A device for carrying out the dyeing method is also disclosed.

Abstract: A squeegee for a screen-printing machine, in particular a rotary screen-printing machine, comprises a supporting part, which can in principle be attached permanently to the frame of a screen-printing machine, as well as a removable part, which is detachably connected to the supporting part. The supporting part is designed as a rigid bar which extends in the longitudinal direction of the squeegee. The removable part is displaceable in the longitudinal direction with respect to the supporting part. The removable part forms the active squeegee part. The supporting part may be of rigid design, while the removable part may be of lightweight design. The removable part comprises in particular those components which regularly have to be removed from the screen-printing machine.

Abstract: The invention relates to a cleaning device for use in cleaning a paste supply system of a rotary screen-printing machine, which paste supply system at least comprises a pump as well as a paste suction line and a paste pressure line, while the cleaning device at least comprises a cleaning agent container, for liquid cleaning agent, by means of which the paste suction line and the paste pressure line can be placed in liquid communication for the purpose of interaction between the paste supply system and the cleaning device, the cleaning device being characterized in that flow-altering means are present. Preferably, the flow-altering means which impart to the cleaning agent, as it flows through the cleaning device and the paste supply system interacting therewith, a direction of flow at least over part of the paste suction line and/or the paste pressure line which has both an axial and a radially outwardly directed velocity component.

Abstract: A device for applying an adhesive coating to an endless belt in a screen printing machine, and having a trough, a pump for filling the trough to a level such that the meniscus of the adhesive contacts the belt, a doctor blade for removing excess adhesive and a pressure bellows for adjusting the pressure at which the doctor blade contacts the belt.

Abstract: A device for suspending a squeegee in a cylindrical screen of a rotary screen printing machine, in which the cylindrical screen is accommodated with both ends in drive and support units, and in which the squeegee extends in the lengthwise direction inside the cylindrical screen, comprises two squeegee supports, each disposed near one of the drive and support units, and each provided with an accommodation opening for the accommodation of one end of the squeegee. At the side facing the inside of the cylindrical screen, one of the squeegee supports is provided with a guide element for guiding an end of a squeegee into the accommodation opening when the squeegee is being mounted in the cylindrical screen.

Abstract: Device for driving at least one rotary screen printing stencil, comprising first main drive means having a first gear wheel which meshes with a circular toothed element which is connected to the stencil, and the axis of which coincides with the axis of the stencil, second main drive means for moving a web to be printed at right angles to the axis of the stencil and against the stencil, the first and second main drive means being synchronized with each other and an auxiliary drive means with a second gear wheel which meshes with the toothed element, while the auxiliary drive means constantly deliver such a couple that one of the gear wheels drives the stencil and the other gear wheel retains the stencil.

Abstract: Screen printing device, comprising an endless printing belt on which a web of material can be fixed temporarily, a printing belt drive device, and a number of rotary stencils driven by stencil drive devices, the printing belt drive device being coupled to the stencil drive devices at a predetermined angle presetting thereof for a synchronous movement thereof. The device also has a signal generation device which can produce a signal forming a measure for a displacement of the printing belt. One or more markings are provided on or in the printing belt and can be detected by detectors securely fixed at predetermined intervals. A comparison device compares the signal coming from the signal generation device, during a displacement of a marking on the printing belt from one detector to a next detector, with a predetermined reference signal, following which a correction device adjusts the angle presetting of one or more stencils on the basis of the comparison result of the comparison device.

Abstract: A screen printing machine comprises a frame in which one or more stencils are supported for printing a web of material fixed on a supporting belt. The stencils are each directly connected by means of a rigid coupling to the rotor of a corresponding rotary drive device. An elongated squeegee, supported near the ends of the stencil, is provided in the interior of each stencil. The drive device is provided with a central through hole running in the axial direction, for allowing through at least the end of the squeegee with radial play.

Abstract: Described is a method for pattern repeat presetting of a multi color screen printing machine wherein the screen printing stencils to be used are pre-set on the basis of independently determined stencil-data and printing position data by establishing a fixed predetermined relation between these data. Also described is a multi color screen printing device having means for setting the lengthwise, widthwise and diagonal pattern repeat with use of a computer and independently determined printing position and stencil data. The invention also relates to a device of determining stencil data.

Abstract: Method for controlling the passage of the fabric through a rotary screen printing installation, whereby a substrate or fabric to be printed is wound from a stock roll and fed into the printing machine of the installation. In order to reduce down times and the waste of mostly expensive substrate the printing machine is set using a fabric of low quality, the so-called leader. The substrate to be printed is sewn to the trailing end of the leader so as to print the substrate after the printing machine is set for first quality printing. The length of substrate is measured and compared with the total length of the print order by means of an electronical processing unit.

Abstract: Multicolor rotary screen printing machine comprising a number of parallel cylindrical stencils, pairwise rotatably suspended on both sides of a transverse beam and cooperating with a travelling printing blanket; the stencils and the blanket are driven by a common motor, mounted externally of the machine, said motor driving an intermediate shaft supported upon the frame of the machine, from which shaft the stencils are jointly driven through a stepped gear drive and hereafter individually through a series of toothed wheels and a planetary driving mechanism.

Abstract: A multicolor rotary screen printing machine comprising a number of parallel cylinder stencils which are located in a common plane and which are each provided, on the inside, with a squeegee consisting of a hollow tube with a squeegee blade, has a novel squeegee suspension. The ends of each squeegee, which project outside the stencil, are suspended from one end of each of a pair of arms, the arms each being guidably bearing-mounted along an individual screw spindle located parallel to the common plane and the screw spindles each being provided with individual driving means, such as individually controlled electric motors and gears. It is thus possible to alter the position of the squeegee within the stencil and to automate the adjustment of the squeegee during operation with the use of suitable control means acting on said individual drive means.

Abstract: A magnetic beam for a roller squeegee of a rotary screen printing installation including an elongated upper plate on the underside of which a number of magnet coils are attached. The upper plate is connected to a lower container which extends over virtually the entire length of the upper plate and surrounds the magnet coils. The lower container has a projecting journal at each end which rests on a vertically adjustable stop connected to the frame of the printing installation. In order to avoid warping of the magnetic beam as a result of temperature differences, the upper plate is connected to the lower container in such a manner that the upper plate can expand freely in the longitudinal direction. The lower plate has a stop member in its center region between the journals which member interacts with an adjustable stop of the frame. By stressed in order to make the beam insensitive to stresses resulting from temperature differences.

Abstract: A web of plastic material presenting filtering properties comprises a porous layer interconnected with a first non woven layer of plastic fibers.The porous layer is formed by heating another nonwoven of plastic fibers, having a lower plasticizing temperature than the fibers of the first non woven, to at least the plasticizing temperature of the fibers of the other non woven but below the plasticizing temperature of the fibers of the first non woven.The first nonwoven consists of polyester fibers and the other nonwoven, e.g., of polypropylene fibers.An apparatus for manufacturing such a web comprises a central roller, and endless felt band partially slung around said central roller, a heating member and a cooling element.

Abstract: A device for splicing the trailing (downstream) end of a first web of material (the expiring web) originating from a first roll to a leading (upstream) end of a second web of material (the new web) originating from a second roll, during stoppage, comprises a frame which accommodates at least a festoon, a web splicing unit and two roll holders. Each roll holder comprises two arms which are fitted so as to be slideable in the axial direction and non-rotatable on a pivot shaft mounted horizontally in the frame and coupled to a rotating mechanism.Each roll holder further comprises two chucks rotatably mounted in the ends of the arms and situated opposite each other coaxially for receiving a roll between them. A vertically arranged drive belt unit is situated between the arms of each roll holder for rotationally driving a roll received between the two chucks. With the roll holder a roll can be easily picked up and pressed against a drive belt.