Postpress Technology 1000 (431-439)

431. What is special pattern paper cover material?

A: The special pattern paper is a kind of cover material made by dipping, embossing (or coating, embossing) the base paper (generally above 100g/m2). According to the coloring mechanism, pattern paper is divided into two types, impregnated and non-dipping coated pattern paper.

432. What is dip pattern paper cover?

Answer: Impregnated pattern paper is made by processing the base paper by soaking. The main production process flow is: base paper → resin color soak → top coat → top gloss → apply moisture → embossed pattern → test → packing . Impregnated pattern paper, paper stiff, good strength, texture is soft and flexible, uniform color, a variety of color patterns, easy to paste, easy hot stamping, is a more high-end cover paper material.

433. What is non-impregnated paper cover?

A: Non-impregnated pattern paper is a kind of pattern paper that is coated with various colors on the base paper and then embossed. The main production process: base paper → on the coating → on the gloss → apply water → embossed → inspection → packaging. The non-impregnated pattern paper is basically the same as the impregnated pattern paper from the surface, but because it is not dyed and resin-impregnated with the soaking method, the paper is easy to fade, and the surface color is not the same as the paper core color, when the surface is damaged or there is order When exposed to the eyes, the color of the paper core itself will affect the appearance quality of the book.

434. What is dipping coating material?

Answer: Dipping and coating the cover material means that the paper will be impregnated with various resin colors, and a layer of polyvinyl chloride or acrylic grease cover material with the same color after the paper is impregnated is applied on the surface. This cover material is both impregnated and coated, so its firmness, strength, stiffness, etc. are much better than other coated papers, but due to the need for a double processing process, it is generally used only for higher-grade books. .

435. What is resin composite fabric with paper cover material?

A: A cover material that uses a resin binder to bind a fabric to a sheet of paper and can perform four-color printing on its surface. The surface layer of this material is fabric, the bottom layer is paper, and the middle layer is resin adhesive. Due to the high degree of automation and the rigorous process during processing, the cover material produced can be used for four-color printing as well as various hot stamping with excellent results. It is a high-quality, relatively expensive cover material. Generally only used for book framing with high preservation value and high grade.

436. What is leather cover material? Which kind?

Answer: The leather cover material refers to the cover material made of animal skins. The leather cover used in this book contains leather, snakeskin, sheepskin, and so on. Modern sheepskins are generally used. The leather cover material is generally used on high-grade books, which have preservation value, use value, and high-quality books (a small part of this volume).

437. What should you watch out for when using leather as the cover material?

A: The leather cover material is generally used on hardcover or deluxe books. There are also a few books that use leather material as the cover. Because the leather is expensive and difficult to process, the following aspects should be noted when processing.

(1) skin selection requirements: 1 skin body texture soft, smooth, delicate, smooth, uniform thickness; 2 uniform surface color; 3 according to the size of the choice of leather skin size; 4 sheep skin is the best.

(2) When cutting, the size should be drawn on the surface of the skin and the main part of the back skin should be selected.

(3) After trimming the leather cover, it is necessary to shave the four sides because the cortical thickness is not easy to be wrapped. Be consistent when cutting edges. Do not cut too thin or too little.

(4) When pasting the cover, it is best to use bone glue or gelatin in animal glue.

(5) Hot Stamping: The general temperature is 120 ~ 150 °C, time is 1 ~ 2 seconds.

438. What is a recycled leather cover?

A: The recycled leather cover is a kind of sheet-like material that is used to deep-process the waste leather products, make the skin fibers, and bind them together with a resin binder to form a skin pattern. On the surface, it is the same as the dermis, but it can also smell the skin, but it also has the taste of a resin binder. It can be a real substitute and is a very good substitute for the leather cover.

439. What is PVC frosted cover material?

A: PVC frosted cover material is a kind of cover material made of polyvinyl chloride, thick body, soft texture and stiffness, and the surface of which is made of frosted surface and is made of a kind of turning fur. This kind of material can be processed Randomly made into a variety of colors and patterns, you can make a separate cover, but also with the paper cover composition cover use.

(author/Wang Huaizhu)