Ring-setting is a post-press processing technique that uses bookbinding materials such as comb clips and spirals to bind loose leaflets. Compared with traditional bookbinding methods such as glue binding, lock stitching, saddle stitching, and wire binding, Its appearance and production process are somewhat different. The common ring-setting methods include two-wire ring setting, wire spiral ring setting, plastic wire spiral ring setting, and plastic ring setting.
The ring book is simple, crisp, generous, and has good flatness; can achieve 360 ​​° flip (except for plastic ring), consistent with the reading habits of a single hand-held book; can use a variety of pages in the same book, such as folding Non-standard pages such as inserts, index labels, patch pockets, small-sized inserts, and profiled pages; can be used to bind large-format books (up to eight open); easy to use, economical and practical in comparison to glue and lock stitches .
Double loop booking
Two-wire binding (Wire-OBinding or Two-loopBinding) is the most advanced type of ring-binding scheme. As shown in FIG. 1, a double wire loop is used as a binding material, and can be customized to the professional according to the size and color of the customer's requirements. Manufacturers booking. When the double coil is used to process the books and magazines, firstly a row of binding holes is punched out at the opening, and then the already-formed binding line is inserted into the hole to complete the closing of the two-coil binding line. Among them, the threading and closing of the gutter can be done by the machine automatically or manually.
The two-wire ring is suitable for binding book blocks with a thickness of 1 inch or less. Depending on the circumstances, two different process flows can be selected. In the first flow, the book pages are printed in the form of signatures after they are printed. The binding process is shown in Figure 2.
In the gluing process, only a thin layer of glue is applied to the back of the book, and after the three sides of the book are cut, the back of the glued book is completely removed.
If the job budget to be processed is relatively low, the batch size is small, or the page size is inconsistent (such as folding inserts, die-cut pages, labels, and other pages), a second, relatively simple process flow is recommended. After the page is printed, first cut the four edges to the finished size, and then use a single sheet collation machine to perform the collation or manual matching, and finally complete punching and piercing.
It should be noted that the opening gap of the double loop in the gutter must be between the back cover and the last page of the book block. In addition, standard, consistent pitches must be used for the twin coil bindings and binding holes. The pitch refers to the center distance of two adjacent binding holes at the mouth of the mouth, or the distance between corresponding points of two adjacent wire rings. There are two ways to represent it, one is the metric representation in mm and the other is the proportional representation. For example, a pitch of 4:1 means that four binding holes are evenly distributed per inch of length. If converted to metric, it is equivalent to a pitch of 6.35mm.
For a two-wire ring setting, generally, if the book block thickness is less than 0.5 inches, a 3:1 pitch is generally used; if the book block thickness is greater than 0.5 inches, a 2:1 pitch is used. In order for the punching process to not damage the text and patterns on the page, a sufficient amount of opening distance must be set. For bookbinding with a pitch of 3:1, a minimum 3/8 inch binding margin (distance from the back edge of the book to the edge of the binding hole) is required; for bookbinding jobs with a pitch of 2:1, set aside 1/2 ~5/8 inch allowance.
Two-line ring can be used for binding calendars, recipes, gantry, books, samples, brochures and other products. When stapling a calendar, simply insert the two-coil binding line from both sides along the back of the book, and then insert the dedicated pendant.
After the book with double coil binding is turned on, the pictures and illustrations on the left and right pages will not be misplaced, so it is particularly suitable for binding books with a cross-page pattern. In addition, the process adapts to automated production methods, and the benefits are high when printed in large quantities. The disadvantage is that it is prone to permanent deformation of the fashion line, which will affect its aesthetics.
Plastic thread spiral ring
The gutters in the PlasticCoilBinding are available in a variety of colors, including black, white, and standard colors, as well as various spot colors, fluorescent colors, and flash colors, as shown in FIG.