Abstract:
An embossing method and apparatus utilizes 3D printing by digitally dispensing\ink jet printing to apply texturing features to a work roll or a sheet that may be fed into a rolling mill to emboss sheet material like aluminum alloy sheet. The printed pattern is highly variable and may be produced quickly and easily allowing low volume embossing. The printed pattern may be removed from a work roll after use to allow the roll to be reused. Alternatively, a sheet receives the printed pattern, is rolled and then the printed material removed from the resultant depression.
Abstract:
The invention relates to a method for positioning a male mould (34) on a counter-pressure cylinder (14) of an embossing station (10) interacting with an embossing cylinder (12), whereby the embossing cylinder (12) comprises a die (18). On the die (18) of the embossing cylinder (12) a flexible male transfer mould (24) is temporarily fixed comprising a registration window (32). The male transfer mould (24) is transferred from the embossing cylinder (12) to the counter-pressure cylinder (14) and fixed thereon. The mould (34) is finally adjusted and fixed in the registration window (32) of the transfer mould (24).
Abstract:
The invention relates to a device (1) for embossing and/or glazing fine metallic paper, comprising at least a first (2) and a second (3) embossing roll. The flat material (6) can be fed under pressure between said embossing rolls, in order to create a pattern. At least an additional embossing roll (4) is connected downstream of the second embossing roll (3). Said additional embossing roll interacts with the first (2) or preceding (3) embossing roll. The patterned flat material (6) can be fed between these embossing rolls, in order to be embossed again with substantially the same pattern. In complex processing methods, it is advantageous to synchronise the embossing rolls.
Abstract:
The present invention relates three-dimensional sheet materials which resist nesting of superimposed layers into one another. More particularly, the present invention provides a three-dimensional, nesting-resistant sheet material having a first side and a second side. The first side comprises at least one region having a plurality of spaced three-dimensional protrusions extending outwardly from the first side which are preferably unitarily formed from the sheet material. To provide the nesting-resistant advantages of the present invention, the protrusions form an amorphous pattern of a plurality of different two-dimensional geometrical shapes. Preferably, the second side comprises a plurality of spaced, three-dimensional hollow depressions corresponding to the protrusions, such that the protrusions are hollow. Of particular interest for certain applications, such as a carrier for an adhesive, the protrusions are separated by an interconnected network of three-dimensional spaces between adjacent protrusions. The three-dimensional, nesting-resistant sheet materials are preferably manufactured in accordance with the present invention utilizing a three-dimensional forming structure comprising an amorphous pattern of spaced three-dimensional recesses separated by interconnected lands. The recesses form an amorphous two-dimensional pattern of interlocking two-dimensional geometrical shapes. The amorphous pattern of interlocking shapes is preferably derived from a constrained Voronoi tessellation of 2-space in accordance with the present invention, wherein the tessellation is constrained by a constraint factor which controls the range of permissible center-to-center spacing of the interlocking shapes. To manufacture the three-dimensional, nesting-resistant sheet materials in accordance with the present invention, a sheet of deformable material is introduced onto the forming structure and permanently deformed into compliance with the forming structure. If desired, the interconnected lands of the forming structure may be coated with a substance before the sheet of deformable material is introduced onto the forming structure.
Abstract:
A system and method for imprinting patterns along a seam obtained from two or more mutually attached layered plastic sheets are provided The method comprises (ι) heating selected areas of the layered plastic surface to a predefined temperature, and (ιι) forcing a molding head having a face with a plurality of fingers, associated with a desired pattern, against the heated surface A soldering head of the disclosed system has at least one such molding member with fingers, some with sharpened tips, shaped as the pattern to be imprinted A soldering head optionally comprises a pressing member with fingers for pressing against peripheries of the layered plastic sheets A soldering head may also comprise a second molding member with recesses to fit the fingers of the first molding member, with independently controllable temperatures, for embossing distinct three dimensional patterns on the soldered layered plastic sheets Tamper evident envelopes are further provided.
Abstract:
A process for high pressure embossing a single ply of paper and the paper produced thereby. The embossing process requires two rolls, a pattern roll (30) and an anvil roll (32). The rolls are loaded together at a pressure of at least 1000 psi at the nip. A single ply of paper is embossed in the nip. The embossments of the paper do not extend outwardly beyond the thickness of the paper to have any out-of-plane deformation. The embossments are typically glassined. The resulting paper has an aesthetically pleasing appearance, without undue loss of tensile strength from the embossing process.
Abstract:
An apparatus (1) and a method for embossing a relief shaped 3-dimensional pattern (2) on a formable surface (3) which is sucked towards and/or pressed against a non-resilient, hard surface (4) provided with a relief pattern (5) in the shape of protuberances and/or indentations, so that a corresponding but complementary pattern (2) is produced in the formable surface. The relief pattern (5) in the hard surface (4) consists wholly or partly of protuberances (5) which are constructed so that they can be fastened to and/or removed from the surface (4) according to requirements, and thus may be removed from or moved to other places on the surface (4); so that the pattern can easily be changed.
Abstract:
A desirable embossing of a fibrous web (6) as dry laid on a forming sheet (2) is effected by the web (6) in a still unglued condition passing a pair of embossing producing rollers (18, 20) carried on or by a pressure resistant support sheet (16) as also passing between the rollers. Problems as to web fractures are hereby widely eliminated.
Abstract:
A staple-less binding unit is provided with upper and lower die portions having pluralities of concave and convex teeth engaging with each other. A control portion causes the staple-less binding unit to carry out a binding process of binding a sheet bundle by biting the sheet bundle by the upper and lower die portions and to carry out a cleaning process of engaging the upper and lower die portions in a non-binding process in which no binding process is carried out.