精裝指書芯先由穿線機一貼一貼串聯后膠脊，切成品書芯，經過壓平、起脊、貼紗布、貼篤頭布后，有襯紙與皮殼粘連成冊的裝訂方式，可分成方脊精裝、圓脊精裝、軟精裝（假精裝）和串環精裝等。
Hardcover means that the book block is first pasted and pasted by the threading machine in series, and then the rubber ridge is cut. After flattening, ridging, pasting gauze and pasting Dutou cloth, there is a bookbinding method in which the backing paper is bonded to the leather case, which can be divided into square ridge hardcover, round ridge hardcover, soft hardcover (false Hardcover) and string ring hardcover.
精裝書較之平裝書高檔而考究，外觀上主要的區別在于，書的前后多了硬硬的書殼，材料成本和裝訂成本都相應增加，適合圖書的裝訂。
Compared with paperback books, hardcover books are high-grade and exquisite. The main difference in appearance is that there are more hard cases in the front and back of the book, and the material cost and binding cost increase accordingly, which is suitable for book binding.
精裝書的硬殼是由面料包裹灰板而做成的，灰板的厚度是從1mm—3.5mm不等，可根據需要選擇不同的厚度。精裝書面料有多種多樣。普通的是用紙張作殼面，可選用128g到200g的銅版紙，單面印刷和覆膜。面料為書籍裝禎紙時，不需要過油、過膠，直接做殼。書殼面料還可以是人造革、布料、錦緞、PVC等。
The hard shell of the hardcover book is made by wrapping the gray board with fabric. The thickness of the gray board ranges from 1mm to 3.5mm. Different thicknesses can be selected according to needs. There are many kinds of fabrics for hardcover books. Generally, paper is used as the shell surface, and 128G to 200g coated paper can be selected for single-sided printing and coating. When the material is book frame paper, it does not need to be oiled or glued, and the shell is made directly. The book case fabric can also be artificial leather, cloth, brocade, PVC, etc.
面料上的工藝異彩紛呈，如局部UV：磨砂UV、七彩UV、加厚UV等；燙電化鋁：燙金、燙銀、燙彩金，燙黑，熱壓，起凸，壓凹等。
The process on the fabric is colorful, such as local UV: frosted UV, colorful UV, thickened UV, etc; Ironing anodized aluminum: bronzing, silver ironing, color gold ironing, black ironing, hot pressing, convex pressing, concave pressing, etc.
精裝書還有如滾金口、套護封、收縮包裝等工藝。
Hardcover books also have techniques such as rolling gold mouth, covering and sealing, shrink packaging and so on.
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