Designing originals - proofing - finalizing and developing process standards - material preparation - printing - finishing - product selection - finished product storage, which is the usual process for the production of gravure cigarette packets. Any omission or inadequate preparation in any part will cause irreversible damage to the subsequent process.
Original design, proofing and finalization
Often, designers rarely consider whether print quality can be achieved smoothly, and operators responsible for product realization rarely have a say in print design. More than ten years ago, our company processed a cigarette pack. The middle part of the picture was printed on a red field with a yellow sun. The registration requirements were extremely high, and the accuracy of the equipment at that time could not meet the design requirements. The consumption rate is 30%. We have also encountered a product, in the Komori Shangbang NL650 gravure printing machine to achieve 5% to 40% of the transition network, two-color dot overprinting, which for designers to be "effect", but for the production staff That is to say "life"!
Due to process problems, product production efficiency is low, which affects product development. This situation is not desired by design developers. Therefore, once the producer finds such problems in the product proofing process, he should actively communicate with the designer, which will effectively prevent the above problems.
After finalization, process technology standards must be developed for each product . Although the standard is not equivalent to quality, there is no standard and the quality of the product is beyond the control of the production process. The standard should include not only the dimensions, color, materials, etc. of the product, but also the impact and results of these changes . Only in this way, the operator can effectively control the production during the production process. For example, the hue of a product, a qualified quality inspector must not only memorize the hue, but also remember the color difference and effect allowed by the product. This is also why some people can see at a glance whether there is any deviation or deviation of the products on duty.
Plate roll
Different plate making processes have very different effects on the formation of the cells and the characteristics of the cells. Among them, the problems caused by improper plate making process occupy a large proportion in printing, and there are many materials that can be referred to. No further details are mentioned here. Only the use of the plate roll in the printing process and the problems that should be paid attention to are introduced.
1. Storage of the plate roll
Excessive humidity is the biggest “killer†of the plate roll, even if the plate with the protective oil coated on the surface is placed in an environment with a relative humidity of 90%, after 2 to 3 months (or shorter) Corrosion and scrapping. Therefore, a dry, ventilated environment is ideal for storing plate rolls. For the printing companies, the humidity in the workshop is often difficult to control, especially during the rainy season. To this end, we should first choose a site with a higher terrain as the plate roll warehouse, and secondly choose a three-dimensional library for the plate . If neither of these methods can be achieved, the roll holder should be made. It is not necessary to wrap it in a blanket and put it in the iron box of the platen roller.
In addition, it must be noted that the hollow plate roller cannot withstand heavy pressure, and regardless of the new and old plate rolls, it is necessary to check whether the protective oil is applied before storage .
2. Use of the plate roll
Before the plate roll is sent to the printing house, the plate making factory usually has completely processed the plate roll, including dirtying, polishing, etc. after plating, but this does not mean that the plate roll will not have problems during use. The following points are worth noting.
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