Manufacturers who currently process hardcover books generally have shell machines and hardcover linkage production lines. However, when small-scale enterprises produce small-volume hardcover books, they cannot invest huge sums of money to automate production. When receiving small-volume orders from tenders and classmates, they can only rely on existing equipment for processing. Due to the limitations of processing conditions, they can only be strictly controlled in each process according to quality standards. Products that do not meet quality standards and requirements must Can not flow down the process, and strictly control on-site quality management. The following writer talks about the points of processing hardcover books.
Raw material control
1. Use of cardboard
Should be selected for hardcover books and albums produced by the book shell cardboard, and storage time should reach more than six months. This paperboard has a small shrinkage and can reduce the possibility of deformation during the manufacture of the book case. When cutting material in the paper cutter, add 2mm margin to each side of the finished product size. After hair samples are cut out, the beveled edges are processed into light edges to eliminate the oblique edges generated by the single-knife cutting and reduce the edge after the edge is cut. Bubbles and edging are skewed. The length of the cardboard is 6mm long for the book block and 2mm wide for the book block.
2. Use of medium diameter paper
Generally choose 80 ~ 240g/m2 paper. If the paper is cut in the longitudinal direction and it is the length of the medium-diameter paper, it will prevent the back of the book from being uneven after it shrinks. The length of the medium-diameter paper and the length of the book cover are the same, and the width is the length of the back of the book after the round ridge is rounded (the endorsement is the width of the book plus 2 times the thickness of the paperboard).
3. Use of auxiliary materials
(1) The plug cloth is first sizing with starch. The position of the adhesive plug should be correct and not be skewed; the edges and edges of the plug should be exposed on the outer edge of the upper and lower end of the book block, and be parallel to the incision; after the paste is straight, it must be firmly bonded and the margins are the same. Its length is 1mm wider than the back of the book.
(2) gauze sizing gauze. Its length is 22-26mm shorter than the book block. The width is 40mm thicker than the book block.
(3) Book back paper is generally made of offset paper of 100 to 120 g/m2 so that the longitudinal stripes run along the upper and lower sides of the back of the book to facilitate segmentation.
(4) The book core tape uses a 5-8mm wide silk fabric tape. The diagonal length of the book block is a long ribbon, which is generally 15mm on the back of the book.
4. Use of cover material
The customer's requirement for the use of all kinds of paint-paper fabrics is: the length is 30mm, and the width is 2 times the width of the paperboard plus the width of the medium-diameter paper plus 44mm (the edge size is 15mm). After the materials are prepared, the stampings are used to prepare the shells after the stamping, so as to prevent the cardboard from unevenness due to brushing after the shells are made, resulting in the shortage of the stamps, wild gold and brightness.
Book block processing control
The structure of various book blocks is different, and the method and procedure for modeling are not exactly the same. However, the basic processing such as back brushing, sticky gauze, adhesive plug cloth, and sticky paper backing are basically the same. After the first few processes, it enters the flattening process.
Flatten
Because the book block is pressed, it can eliminate stress, close the needle and make the back of the book flat and rectangular. Press the root of the book block tightly and fold the edge of the folded product book block to prevent steps after the book is finished. And each book is inspected at this time, with multiple posts and less posts, and the responsibility mark of the test is written on the back of the book so that the book block is free from mistakes. During the flattening, the book block after the sewing line is banged, laid flat, placed properly, and the pressure is appropriate, so that the book block has a consistent degree of solidity, that is, the thickness of the book back is uniform, and the phenomenon of shrinking, stressing, and rolling is prevented.
2. The first brush
After the book block is bundled, it is brushed with thin adhesive material on the back of the book to form a flexible film, so that the book block is basically shaped so that no misalignment occurs in the next process, and the first brushing is completed. .
3. Cut books
The three-sided cutting requires the squareness of the book, and the cutting error is small.
4. Round
The standard circular arc of hardback book books should be based on the thickness of the book block, and the central angle of the arc of the back of the book is about 130°. However, the thicker the book block, the smaller the circular potential should be. The thinner the book block is, the thinner the circle should be. Bigger. In order to unify the circular dimensions of the book block after processing, each book must be rounded to be compared with an arc of an exclusive mold to ensure that the arc length is consistent with that of the subsequent process. You can use a steam iron to put the book on your back and stack it together. Put a towel on it and use iron and steam to iron it several times to soften the back glue. Then you can use a wooden hammer to beat the dough. It can prevent wrinkles or sticky edges of coated paper and enhance the quality of binding.
Finally, according to quality requirements to complete the sticky ribbon and "three sticky" work.
Book shell control
When making the book case, first adjust the size of the mask frame and make a wide back mark on the upper gauge to ensure that the book is centered on the back. When the cardboard is placed, the cardboard must be leaned to the left and right sides to overcome the error in the cutting of the cardboard and ensure that the size of each book casing is the same after the completion. After the book shells were made according to the quality requirements, the sides were scraped tightly with bamboo scrapers to prevent the edges from coming loose. Then put two sealed envelopes of the two book envelopes on top of each other. The paperboards in the middle seams are the same thickness as the bookcases, so that the front side of the cover is pressed down. Each pile of recently completed bookcases is compacted once under pressure control. The covers are then separated, the cushion strips are removed, and they are stacked flat in one direction. The upper surface is then pressed with heavy objects to prevent warping. The envelope should be dried and dried before it is sealed. In the rainy season, add preservatives to the shell glue to prevent mildew in the natural shade.
The front end of the circular endorsement shall be pre-heated and formed on the self-made round-back tool to facilitate its conformity with the back of the book and make the book back and the middle of the book cover consistent. Focus on preventing the surface of the finished book shell from warping unevenly: (1) Use small amounts of water, dry quickly, and make good animal glue. (2) Adjust the inside and outside pulling force of the book envelope to balance the internal and external moisture. (3) The finished product is flattened after being stacked, dried with circulating air, completely dried, and inspected or packaged.
Enclosure process control
When the book is sealed, first brush the glue in the inner groove of the book shell, and then press the book block and the book cover to test the shell, so that the three sides of the sky, the foot, and the front mouth are equal. After the machine pressure trough, pass to the lining lining personnel to sweep the lining, press the groove first and then sweep the lining to prevent the lining paper of the ring liner paper with stronger moisture absorption ability.
Next, open the above book case, apply a proper amount of 7 inch wool brush, and evenly brush from the center of the ring lining to the four sides. Then, the front of the book is staggered and stacked on the front mouth to flatten out, and the air remaining in the middle of the booklet and the bookcase is eliminated, so that they are more firmly bonded and flatter. If it is a coated paper ring liner, a waste cover over the film must also be placed between the two pages. The film surface faces the book block, helps absorb moisture, and prevents moisture from entering the ring liner and wrinkles the page. In addition, the shell crew is required to put a personal job number on the ring liner to prevent the book block from being reversed. Try to check the book after the shell to check whether the three sides are consistent, the back and the spine are flat. The lining sweeper should lift the brush when it reaches the edge of the brush to prevent wild glue and incision adhesion.
In addition, pay attention to pressure tank process control and book inspection control. Pressure trough process control: pressure trough with an exclusive pressure trough plate, requiring the trough line to align with the book trough, a layer of books a pressure trough slab stacked to a certain height and then pressurize, make the book trough stereotyped 4 hours to prevent the book trough is not firm. Book inspection control: The book with wild glue should be separated after polishing with fine sandpaper, and the final inspection of the book block issue should be done.
Source: Printing Technology
Raw material control
1. Use of cardboard
Should be selected for hardcover books and albums produced by the book shell cardboard, and storage time should reach more than six months. This paperboard has a small shrinkage and can reduce the possibility of deformation during the manufacture of the book case. When cutting material in the paper cutter, add 2mm margin to each side of the finished product size. After hair samples are cut out, the beveled edges are processed into light edges to eliminate the oblique edges generated by the single-knife cutting and reduce the edge after the edge is cut. Bubbles and edging are skewed. The length of the cardboard is 6mm long for the book block and 2mm wide for the book block.
2. Use of medium diameter paper
Generally choose 80 ~ 240g/m2 paper. If the paper is cut in the longitudinal direction and it is the length of the medium-diameter paper, it will prevent the back of the book from being uneven after it shrinks. The length of the medium-diameter paper and the length of the book cover are the same, and the width is the length of the back of the book after the round ridge is rounded (the endorsement is the width of the book plus 2 times the thickness of the paperboard).
3. Use of auxiliary materials
(1) The plug cloth is first sizing with starch. The position of the adhesive plug should be correct and not be skewed; the edges and edges of the plug should be exposed on the outer edge of the upper and lower end of the book block, and be parallel to the incision; after the paste is straight, it must be firmly bonded and the margins are the same. Its length is 1mm wider than the back of the book.
(2) gauze sizing gauze. Its length is 22-26mm shorter than the book block. The width is 40mm thicker than the book block.
(3) Book back paper is generally made of offset paper of 100 to 120 g/m2 so that the longitudinal stripes run along the upper and lower sides of the back of the book to facilitate segmentation.
(4) The book core tape uses a 5-8mm wide silk fabric tape. The diagonal length of the book block is a long ribbon, which is generally 15mm on the back of the book.
4. Use of cover material
The customer's requirement for the use of all kinds of paint-paper fabrics is: the length is 30mm, and the width is 2 times the width of the paperboard plus the width of the medium-diameter paper plus 44mm (the edge size is 15mm). After the materials are prepared, the stampings are used to prepare the shells after the stamping, so as to prevent the cardboard from unevenness due to brushing after the shells are made, resulting in the shortage of the stamps, wild gold and brightness.
Book block processing control
The structure of various book blocks is different, and the method and procedure for modeling are not exactly the same. However, the basic processing such as back brushing, sticky gauze, adhesive plug cloth, and sticky paper backing are basically the same. After the first few processes, it enters the flattening process.
Flatten
Because the book block is pressed, it can eliminate stress, close the needle and make the back of the book flat and rectangular. Press the root of the book block tightly and fold the edge of the folded product book block to prevent steps after the book is finished. And each book is inspected at this time, with multiple posts and less posts, and the responsibility mark of the test is written on the back of the book so that the book block is free from mistakes. During the flattening, the book block after the sewing line is banged, laid flat, placed properly, and the pressure is appropriate, so that the book block has a consistent degree of solidity, that is, the thickness of the book back is uniform, and the phenomenon of shrinking, stressing, and rolling is prevented.
2. The first brush
After the book block is bundled, it is brushed with thin adhesive material on the back of the book to form a flexible film, so that the book block is basically shaped so that no misalignment occurs in the next process, and the first brushing is completed. .
3. Cut books
The three-sided cutting requires the squareness of the book, and the cutting error is small.
4. Round
The standard circular arc of hardback book books should be based on the thickness of the book block, and the central angle of the arc of the back of the book is about 130°. However, the thicker the book block, the smaller the circular potential should be. The thinner the book block is, the thinner the circle should be. Bigger. In order to unify the circular dimensions of the book block after processing, each book must be rounded to be compared with an arc of an exclusive mold to ensure that the arc length is consistent with that of the subsequent process. You can use a steam iron to put the book on your back and stack it together. Put a towel on it and use iron and steam to iron it several times to soften the back glue. Then you can use a wooden hammer to beat the dough. It can prevent wrinkles or sticky edges of coated paper and enhance the quality of binding.
Finally, according to quality requirements to complete the sticky ribbon and "three sticky" work.
Book shell control
When making the book case, first adjust the size of the mask frame and make a wide back mark on the upper gauge to ensure that the book is centered on the back. When the cardboard is placed, the cardboard must be leaned to the left and right sides to overcome the error in the cutting of the cardboard and ensure that the size of each book casing is the same after the completion. After the book shells were made according to the quality requirements, the sides were scraped tightly with bamboo scrapers to prevent the edges from coming loose. Then put two sealed envelopes of the two book envelopes on top of each other. The paperboards in the middle seams are the same thickness as the bookcases, so that the front side of the cover is pressed down. Each pile of recently completed bookcases is compacted once under pressure control. The covers are then separated, the cushion strips are removed, and they are stacked flat in one direction. The upper surface is then pressed with heavy objects to prevent warping. The envelope should be dried and dried before it is sealed. In the rainy season, add preservatives to the shell glue to prevent mildew in the natural shade.
The front end of the circular endorsement shall be pre-heated and formed on the self-made round-back tool to facilitate its conformity with the back of the book and make the book back and the middle of the book cover consistent. Focus on preventing the surface of the finished book shell from warping unevenly: (1) Use small amounts of water, dry quickly, and make good animal glue. (2) Adjust the inside and outside pulling force of the book envelope to balance the internal and external moisture. (3) The finished product is flattened after being stacked, dried with circulating air, completely dried, and inspected or packaged.
Enclosure process control
When the book is sealed, first brush the glue in the inner groove of the book shell, and then press the book block and the book cover to test the shell, so that the three sides of the sky, the foot, and the front mouth are equal. After the machine pressure trough, pass to the lining lining personnel to sweep the lining, press the groove first and then sweep the lining to prevent the lining paper of the ring liner paper with stronger moisture absorption ability.
Next, open the above book case, apply a proper amount of 7 inch wool brush, and evenly brush from the center of the ring lining to the four sides. Then, the front of the book is staggered and stacked on the front mouth to flatten out, and the air remaining in the middle of the booklet and the bookcase is eliminated, so that they are more firmly bonded and flatter. If it is a coated paper ring liner, a waste cover over the film must also be placed between the two pages. The film surface faces the book block, helps absorb moisture, and prevents moisture from entering the ring liner and wrinkles the page. In addition, the shell crew is required to put a personal job number on the ring liner to prevent the book block from being reversed. Try to check the book after the shell to check whether the three sides are consistent, the back and the spine are flat. The lining sweeper should lift the brush when it reaches the edge of the brush to prevent wild glue and incision adhesion.
In addition, pay attention to pressure tank process control and book inspection control. Pressure trough process control: pressure trough with an exclusive pressure trough plate, requiring the trough line to align with the book trough, a layer of books a pressure trough slab stacked to a certain height and then pressurize, make the book trough stereotyped 4 hours to prevent the book trough is not firm. Book inspection control: The book with wild glue should be separated after polishing with fine sandpaper, and the final inspection of the book block issue should be done.
Source: Printing Technology
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