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Hardcover books related information
1. Hardcover features
There is a thumb index hole in the corner of the book block, three corners of the book block have a gold hole, a leather cover with a zipper, thin paper printing, and rounded corners.
2. Binding material
The open size is 32 inches (125 mm x 185 mm); the paper is Bible paper with a basis weight of 30 g/m2; the book case is 150 g/m2 cardboard; the ring liner paper is a double-tape paper with a basis weight of 150 g/m2; Hardback book design requirements, ring backing paper is printed in black on the ground; hot stamping materials used in Germany Kurz's anodized aluminum; In addition, from the market purchased milk white plastic, leather (pig skin), zipper, stickers, etc. material.
3. Binding equipment
Flattening machine, pressure slot machine, three-side cutter, gilding die-cutting machine, sewing machine, and thumb index hole, special device for rolling the mouth.
Book block processing
1. Process flow
Flattening -> first brushing -> cutting -> three grinding (coarse grinding, fine grinding, fine grinding) -> round, ridge -> second brush -> sticky book ribbon and sticky Head cloth -> third brushing -> sticky gauze, sticky paper back -> cutting -> gold nozzle -> processing thumb index hole -> labeling
2. Processing points
(1) The book's round potential is calculated from the thickness of the book block, and the length of the book block arc after rounding is approximately 1.2 times the thickness of the book block.
(2) The book block ribbon sandwiched between the pages of the book is glued to the back of the book about 10 mm above the top of the sky. Its length is based on the length of the diagonal of the book. Normal straightening should be followed by 10-20 mm beyond the book block. A thin book generally uses 1 ribbon, but considering that the content of the hardcover book is divided into two parts, the processing design uses 2 ribbons for ease of reading and research needs.
(3) When sticking the head cloth, the position must be correct and not be skewed. The edge of the plug cloth should be exposed on the book block, and the lower end of the cutting cloth should be outside the cut surface and be parallel to the cut surface. The width of the plug cloth is generally 10-15mm, and the length is the arc length of the back of the book.
3. Processing features
(1) Rounded corners
1 According to the size of the book and the thickness of the book block, to determine the radius of the rounded corners, the range of change is generally 2-8mm. If the customer has a recommendation, the binder can also refer to it.
2 The rough grinding and fine grinding of the rounded corners are done by the machine, and the grinding is done by hand.
3 Because the rounded part is easy to wear during use, the process requirements for the round corners are relatively strict.
(2) Gold rolling mouth
1Requires that the nouging mouth is shiny and can not fall off gold, especially in the round corner; ensure the cleanliness of the production and processing environment, because once the dust adheres to the incision during the processing, the hot iron will come off and will be there. The formation of white spots will result in a gold spill.
2 Under normal circumstances, no matter how large the size of a book is, the three-side incisions of the book's core are required to add 1 mm to the cuts on the three sides of the finished book block, which are used as the process loss during the process of grinding the three sides of the incision.
(3) Thumb index hole
According to the customer's requirements and the specific content of the book, design the arrangement of thumb index holes. For example, there are 39 thumb holes in the hardcover book, and the design is arranged in 4 rows, with 2 rows in the forward direction and 2 rows in the reverse direction.
The processing points are as follows:
1 Record the specific page number of the page where the thumb index mark is located in a certain order as a preparation before processing.
2 The tool diameter of special equipment has a variety of specifications. When it is used for punching, the diameter of the final thumb index hole will be slightly larger than the diameter of the special tool, but it should not be too large. Take special care not to damage the center of the printing plate.
3Requires that the thumb index hole be reasonably laid out and uniform in size; requires equal spacing between thumb index holes; requires that the thumb index hole be clean and free from burrs; focus on checking whether the incision on the thumb index hole at the mark's position is clean .
4 Taking into account the requirements of the customer and the content of the book, under the premise of meeting the technical requirements, customize the thumb index mark according to the needs and processing parameters. (to be continued)
Hardcover book processing points and analysis of common problems
Hardcover book processing has always been a binding technology that people in the industry are concerned about. In order to experience this unique technology, this reporter interviewed Nanjing Aide and Beijing Aide Company, which are quite experienced in the production of hardcover books, and interviewed them for many years. Technical staff with hard working experience. Let's have a Deluxe Edition hardcover book that will take you into the world of hardcover bookmaking combined with manual and equipment.