Abstract:
The embossing device includes—a first path for a first ply of web material; —along the first path, a first embossing roller provided with embossing protrusions; —a first heating device associated with the first embossing roller to heat the surface of the first embossing roller; —at least a first functional roller adapted to perform an action on a ply of web material. The first functional roller is provided with a rotation arrangement, adapted to keep the first functional roller in rotation during a temporary stoppage of the embossing device, with the first functional roller spaced from the first embossing roller and with the first ply of web material stationary in the first path.
Abstract:
An apparatus and method for embossing a substrate are disclosed. For example, the apparatus includes an embossing platform, a printhead to dispense ink on the embossing platform in a desired raised pattern on the embossing platform, a press to apply a load against a substrate placed on the desired raised pattern and the embossing platform to emboss the desired raised pattern onto the substrate, and an ink removal device to remove the ink that is dispensed on the embossing platform in the desired raised pattern.
Abstract:
An embossing device (1) includes three embossing rollers (5, 7, 9), each co-acting with a pressure roller (11, 15, 19), to emboss a plurality of paper plies (V1, V2, V3). Two embossing rollers can be easily interchanged to switch from a nested configuration to a tip-to-tip configuration, or to switch from one type of pattern to another. A lamination roller and a glue dispenser are arranged around one of the embossing rollers.
Abstract:
A radial spacing, between two rotating cylindrical embossing tools, is adjustable, in an embossing device (14) having: an armature (19, 21); a first structure (16, 24, 26, 27, 29) which is movably mounted in translation relative to the armature (19, 21), which has a first rotating cylindrical tool (16); a second structure (17, 22, 28, 31) mounted in a fixed manner on the armature (19, 21) and which is provided with a second rotating cylindrical tool (17). A method includes steps of: pushing (T) on the first structure to move it closer to the second structure by leaning on the armature (19, 21) to adjust a radial space, or pulling (P) on the first structure (16, 24, 26, 27, 29) in order to move it away from the second structure (17, 22, 28, 31) by leaning on the armature (19, 21) in order to finely adjust the radial spacing between the first and the second tools (16, 17).
Abstract:
The present disclosure provides a process for monitoring and controlling the nip force between a fixed roll having a first longitudinal axis and a pivoting roll having a second longitudinal axis.
Abstract:
The present invention discloses a decorative material rolling mill having an adjustable roll gap, which includes: a left frame and a right frame connected to each other; and an upper roll and a lower roll, two ends thereof being axially disposed on the left frame and the right frame; and a driving mechanism for driving the upper roll and the lower roll to rotate; and further includes: a rolling gap adjustment mechanism for driving the upper roll or the lower roll to move vertically along the left frame and the right frame, thereby adjusting a rolling gap between the upper roll and the lower roll according to the thickness of a shearing die. The present invention uses a rolling gap adjustment mechanism to adjust a rolling gap between an upper roll and a lower roll, thereby accommodating thickness differences among die sheets, upper rolling plates, and lower rolling plates from different manufacturers. Various rolling gap adjustment mechanisms disclosed by the present invention are simple in structure and convenient to use.
Abstract:
Device for treating paper webs or plies, comprising a couple of overlapped rolls (2,3) for compressing a paper web or ply passing between them. Each of said rolls (2,3) features a fixed central shaft (20,300) supported by a corresponding holder (10,83) at its ends, on which shaft a tubular jacket is fitted, with the interposition of low-friction connecting members (21,310) which are positioned on opposite sides with respect to the center line of the fixed central shaft axis, so that said tubular jacket, which is destined to come into contact with the paper webs or plies to be treated, is free to rotate about its longitudinal axis.
Abstract:
An embossing system for embossing and perforating at least a portion of a web is provided comprising a first embossing roll having embossing elements and at least a second embossing roll having embossing elements, wherein the elements of the first and second embossing rolls define perforate nips for embossing and perforating the web and wherein at least a predominate number of the perforate nips are substantially oriented in the cross-machine direction. Moreover, substantially all of the nips defined by the embossing elements of the first and second embossing rolls can be substantially oriented in the cross-machine direction. Further, the cross-machine embossing elements are at an angle of about 85° to 95° from the machine direction.
Abstract:
Device for treating paper webs or plies, comprising a couple of overlapped rolls (2,3) for compressing a paper web or ply passing between them. Each of said rolls (2,3) features a fixed central shaft (20,300) supported by a corresponding holder (10,83) at its ends, on which shaft a tubular jacket is fitted, with the interposition of low-friction connecting members (21,310) which are positioned on opposite sides with respect to the center line of the fixed central shaft axis, so that said tubular jacket, which is destined to come into contact with the paper webs or plies to be treated, is free to rotate about its longitudinal axis.
Abstract:
A diffractive microstructure is produced on the surface layer of a substrate using an embossing device. The embossing device includes an embossing roll and a backing roll for exerting an embossing pressure on the surface layer of the substrate. The embossing pressure and/or variations in temperature cause deflection of the embossing roll. To compensate for the deflection, the embossing device can set the embossing pressure exerted by the central area of the embossing roll on the surface layer of the substrate to be at least equal to or higher than the embossing pressure exerted by the end areas of the embossing roll on the surface layer of the substrate.