How can a printer effectively use special paper

What is special specification paper?

Printing paper commonly used paper is roughly divided into positive specifications, generous specifications and special specifications in three categories. General specifications full sheet size is 787mm*1092mm, generous size is 889mm11*94mm, other size specifications are collectively referred to as special specifications, special specification paper referred to as special rules paper.

Why use special paper?

After receiving the customer's orders and sample drafts, the printing plant first carries out the design and planning work (including the graphic design, overall process design, production and quality planning of the previous period), and then carries out the printing processing. In the process design, it is often found that the normal size (largeness, positiveness) of the paper is used, leaving more paper edges after processing, resulting in greater waste. In order to reduce waste and reduce raw material costs when the order quantity is relatively large, the printing house will order the special specification paper to the paper mill.

Why use special paper?

After receiving the customer's orders and sample drafts, the printing house can determine the specifications of the paper used when designing and planning the work. Under normal circumstances, the customer's processing cycle to the printing factory is not too long. Sometimes even if the printing factory finds that the special paper is required to be ordered to the paper mill immediately, the paper mill will never produce the special paper in advance, nor will it have stock. When the paper arrives, the printing factory can only rush to print on the machine in order to ensure the printing period. It is often too late for the paper to be stored for a period of time or for storage. not enough. Under normal circumstances, after the paper is produced, it cannot be immediately used for printing. It should be stored in the warehouse for a period of time (this period is called the storage period, and the storage period of each type of paper is different). Papers that have not been stored for a long time or have not been stored have not been stabilized and balanced in all aspects and problems such as these have been inevitable.

What are the problems that often occur in the use of special papers and what are the implications?

The performance of special paper in the process of use is not stable. The main manifestations are: poor quality of paper surface coating, improper moisture content, composite type paper (such as gray white board paper, composite glass paper board, etc.) poor composite strength, prone to appear disabled Paper, gray board, white paper, gray paper base, paper off, etc. The severity of these problems is different, resulting in a variety of different shortcomings in the process of printing and postpress, see Table 1.

In the process of printing and post-printing, unqualified paper not only directly affects the quality of the printed product, resulting in an increase in the proportion of defective products and unqualified products or the number of orders. It also seriously affects work efficiency and increases the workload of managers and operators. The quality of the printed product caused by the failure of the paper is degraded or deficient. It is easy to see when people see it, but its impact on work efficiency, the resulting increase in man-hours, and the impact on equipment, etc., cannot be accounted for. The printer did not notice. In fact, these inquiries affect live-in and out-of-total influences.

How to effectively use special paper?

Printing companies should avoid using special paper as much as possible, but they are completely useless and unlikely. When a sales person or a product developer quotes a price to a customer, they should use conventional paper, or use a special paper as a condition for another type of solution.

From the above analysis, it can be seen that the special regulatory paper is prone to problems because the short duration of the printing process, the tight time, and the insufficient storage period of the paper result in instability of various performance indicators. In order to avoid a series of problems caused by the insufficient storage period of the paper, it is recommended to inform the purchasing personnel at the first time when determining the use of the special paper, so that they have enough time to contact the paper mill for paper preparation. It is advisable for the paper mills to have sufficient production and processing. , storage time. As a printing factory, it is also necessary to strengthen the inspection of incoming materials and strengthen the paper protection during distribution and transportation during use.

Reprinted from: Printing Technology