On-demand binding jobs are very different from long-lived and large-size binding jobs. Bookbinding on demand is more challenging. Timely organization of production and effective control of the production cycle are the basis for the successful completion of work.
Regardless of saddle stitching, perfect binding, or spiral binding, there are different process requirements for layouts and cuts, and these requirements affect the printing method. In addition, other binding processes, such as folding, gluing, and laminating, also impose corresponding requirements on the printing process. The following are some of the key issues.
Glue binding
The texture of the paper is the key. In order to make the book after finishing the binding more beautiful and durable, the texture of the paper should be parallel to the direction of the spine. With proper textures, the layout may be affected, although these designs are best suited for fast printing. For example, on a 228.6 mm x 355.6 mm paper, double prints are printed. We know that the 228.6 TIII “l×355.6 mm paper is a very common size for fast printing, and for glue binding, It is very likely that the texture of the paper is not suitable.
The right-sized margin is also very important for perfect binding. In addition to leaving an extra margin of about 4m for the milling back at the spine, at least 3mm margins are required on the other three sides. In addition, leaving a certain amount of margins at the foot of the cover prevents glue from sticking to the cover of the next book. That is, the cover needs to use a paper with a different size from the text.
Round hole binding
Leave enough punched edges on the side of the opening. For a bound book with a perforation ratio of 3:1 (that is, three holes per inch), leave at least 10 mm on the margin. For a bound book with a 2:1 perforation ratio, leave at least 8 mm on the margin. It needs to be emphasized that the margin is the distance from the edge of the spine to the nearest hole from the spine.
Saddle stitch
Since saddle stitching can be completed by combining some relatively independent auxiliary equipment, it is generally considered as the most economical and cost-effective binding method. At Seaboard, we can combine paper, stapler, folder and cutter into a single device process that is the ideal solution for short lived and tightly cycled orders. Saddle stitching is best suited for thin bookbinding, such as reference manuals and product introductions.
folding
Layout design is the key. Most of the binding methods define the margin size that fits the individual binding method. Of course, for some well-designed products or products with more complex die-cutting procedures, the folding rules can be adjusted. A small change in layout can make high-speed and smooth automation products become costly and time-consuming manual products.
Matching page
Many high-speed printers can automatically page after printing. This saves time for some production processes, but it may extend the cycle at other points. For example, in the case where the index is separated from the context, the index and the content need to be punched automatically even though the index has to be manually configured.
Pre-layout is also disadvantageous for some machine-bound jobs. For example, the thick cover of a coil binding book needs to be punched separately from the inner page of the body before collation and stapling.
Indexing enhancements
If this batch of activities needs to be indexed, especially when bound with a ring binder, reinforcement indexing is a good idea. Polyester film is a laminated sheet that can be used for the index section and the spine section to ensure that the index will not be damaged too much under high usage rates. Polyester film can also provide a variety of colors to match the rest of the book.
Glue
Keep the glue part free of ink, toner and coating. Any material that is adhesively bonded with paper can be finished with a sizing method. For some packaging boxes and folders, all glue parts must be free of ink, colorants, and paint.
Lamination
Laminating is a good way to make the cover and other parts of the book strong and durable. However, due to the chemical composition of the colorant is not suitable for a variety of coating, there are problems in the binding process. Fortunately, there are some coating materials that are specifically designed for use with colorants. Therefore, you should communicate with the bindery or post-press processing department before printing to avoid problems in the subsequent production process.
Indentation
Thick substrates require indentations. When the text is printed on paper of 128 g/m2 or more, or when thicker paper is covered with ink, it is necessary to indent before folding. Depending on the quality and printing requirements, the indentation can be completed during the folding process or as an independent production step. ※
Reprinted from: Print Magazine
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