Three-dimensional die cutting technology
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Printers always hope that they can keep up with the demand for merchandise printing as soon as possible, and further expand their business scope; and customers need their own merchandise packaging to stand out from the daily media promotion and information flow, to give consumers a kind of public Different feelings, this is one of the reasons why the post-press processing process is constantly improving in the printing process. More and more printers are beginning to work on post-press processing, such as glazing, hot stamping foil, 3D and hologram effects, relief and die-cutting. Drupa 2004 will showcase a new surface finishing technology – a new die-cutting technology that enables three-dimensional effects on prints.
Many printers use old embossing plates or rollers to achieve embossing, punching or die-cutting in very modern workshops, but many manufacturers have already adopted online processing. Sometimes the die-cutting method is combined with other post-press processes to achieve more personalized effects, such as metallic luster and pearlescent effects, or partial glazing effects, while also allowing the consumer to leave the extension effect of cutting off some contours. Under a deep impression.
In the decoration of the book, the part will be cut off as a picture display window, and it will also receive very strange effects. The reader will open this page to explore more fascinating things behind the window. It is also possible to create suspense in a multi-layered folding manner, which evokes the reader's curiosity. This method can better highlight the theme of the book. In addition, the decoration around the window is also one of the highlights, the transparent film can be used to make the die-cut part like a complete glass window. This die-cutting method is suitable for many materials such as paper, cardboard, corrugated board, film and other plastics, cork, foil and fabric.
In general, die cutting has high technical requirements, not only to provide customers with high quality products, but also to provide customers with high level of technical support and information services. The key to quality assurance is the correct match between the printing and die cutting equipment. In the past, die-cutting was often done after printing, but it took too long, so as more and more customers demanded die-cutting while printing, ie, die-cutting, but this requires a lot of improvements to the die-cutting equipment.
Platform or rotary die cutting
Die-cutting methods are available online and offline. For short runs, the existing round die-cutting machine is sufficient, but for large-volume jobs, the automatic die-cutting machine is an ideal choice. The most common die-cutting machines are platform type and rotary type. The platform type die-cutting machine adopts flat-press die-cutting method, and the rotary die-cutting machine adopts die-cutting method of circular pressing. Large die-cutting machines are often equipped with pneumatic bottom rolls and hydraulic knife rolls to reduce the elongation of the material during die cutting operations. Many manufacturers do not want to purchase a die-cutting machine separately, and can now achieve on-line die cutting on a sheetfed offset press. The die-cut version is attached to the blanket cylinder and the master plate can be mounted on the impression cylinder with the protective layer. Earlier this year, Heidelberg introduced an in-line die-cutting unit designed for a single A3 format. This unit can be placed behind the last printing unit and a die-cut version is secured with a magnetic roller. In production, the operator can complete the overprint adjustment of the lateral, circumferential and diagonal directions of the drum by computer. The die-cut version is manufactured by the manufacturer based on data or film supplied by the customer and can be reused. This online die-cut unit can also be retrofitted to a glazing unit, which is a new task that can be undertaken with a simple modification.
In addition to mechanical die-cutting, laser die-cutting technology has also been promoted and applied in recent years. Laser die-cutting is especially suitable for post-press processing of small-format jobs, such as greeting cards. Laser die cutting can even cut off the surface of a cardboard having a certain thickness to create a relief effect.
Printers are looking for a simple printing press that combines printing, folding, indentation, punching, and even embossing. Manroland also has a similar system available. In short, all these various die-cutting processes have improved the grade of printed matter, and also provided a new development direction and opportunity for the future printing industry and the media industry.