Post press process of the hottest printing industr

The printing industry has become an important part of the IT industry. After printing, personalized binding can be completed, and variable data printing of the inner pages or covers of books and periodicals can be completed. With the improvement of consumption level, post press demand is tending to be high-grade materials, diversified and refined processes and technologies

take the post press material binding method as an example, there are three changes as follows:

first, luxury and special-shaped clothes are increased, and special post press processes are applied

in some processes with high technical requirements, such as rolling red gold foil, laying red gold, locking flower heads, making false ridges, sticking lining roots, padding waist materials in luxury hardcover, splicing, laminating, gluing pages in butterfly packaging, stitching and threading of thread packaging, aligning columns and corners, re opening, laminating and other operations, traditional manual skills have been paid attention to again; Special binding methods, such as folding and sealing with uneven front opening and multi folded blood, and empty back soft hardcover with non stick plug cloth, have been applied

second, the paper quantity is improved

the book block paper used to be about 52g/m2, but now it is mostly 60g/m2, gradually approaching the international standard of 70g/m2, and the cover paper has changed from about 80g/m2 to 157g/m2, or even 200g/m2~250g/m2; There are more and more printed materials with international standard format. Except for the 16 folio textbooks with 787mm and 1092mm specifications (260mm and 184mm), other textbooks adopt international standards, and office paper has basically become an international folio

third, the types of binding materials have increased, and the post press technology has become more diversified

for example, the cover materials are mainly paper (Paperback) and varnished cloth (Hardcover), and are extended to film covering, PVC coating, resin impregnation, coating impregnation, PVC frosting, recycled leather, synthetic leather, precautions for the use of fabric/pressure testing machine, paper composites and local UV materials. Different textures require different bonding materials; Binding adhesives actively and steadily promote the "building block" R & D plan. Binding materials are also extended to animals, plants, caseins, synthetic resins, etc. each category includes many kinds and models, and the bonding objects of each adhesive are also different

take the commonly used EVA hot melt adhesive as an example. It has a wide variety of types and models, with different use temperatures, melting points, open points, curing points, cooling and hardening points, etc. it should be selected and adjusted according to the texture of the bonding object, equipment operation speed, production season, workshop ambient temperature and humidity, etc. for example, the workshop temperature should be maintained at 22 ℃ ~27 ℃, and the use temperature of the adhesive should not exceed the product standard temperature of 5 ℃, otherwise, It may cause irreparable losses. Pur (polyurethane) thermoplastic synthetic resin adhesive material, which is heat resistant (250 ℃) and cold resistant (-40 ℃), as a new hot-melt adhesive, has high bonding strength and flexibility, and can be used for rounding and ridging hardcover books with wireless adhesive binding

in addition, post press processing automation and personalized service

the automatic operation is easy to adjust, with high efficiency and good stability. It can also realize the digital process management of post press and pre press, and mass production can save cost and time. For example, CIP4 includes the low noise characteristics of CIP3 and Adobe's standard file format JDF, including the whole workflow and the description of characteristics on different platforms, which can effectively control process variables and improve quality. At present, BASF is discussing a new strategic cooperation field with ofo to connect with wireless binding and riding post printing devices that receive network transmission data, so that JDF technology can be easily applied to such devices

a new type of paperback binding automatic production line has been able to select the structural type of the gluing part according to the type of glue required by the customer. It can decide how many book clips the final binding host consists of according to whether it is one-time gluing or two-time gluing (with intermediate drying), whether it needs to apply gauze cards, etc. Even in the structure of the same station, customers can finally decide according to their preferences. A new type of horse riding binding linkage machine has more and more functions, which can perform double and triple cutting, splitting and punching, automatic online pasting of CDs, product samples, feedback form cards, etc., as well as variable data printing, such as the recipient's name, postal code, address, etc

also, the problem of qualified and skilled post press workers will become more and more prominent, while equipment designed in line with ergonomics can improve quality and labor productivity without too much training for operators. On demand processing and personalized service can be closer to customers. For example, some post press processing equipment has been able to provide personalized inkjet printing, which can print different addresses, or even different patterns, on each printed sheet to be mailed, so that the post press function can be extended to the mailing part