CP.17 Finishing Operations

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CP.17 Finishing Operations
Xian University of Technology Prof.Dr.Cao
Congjun
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Postpress Finishing (postpress) is a segment of
the print production flow in which the printed
product is given its requested features of form
and function.
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2. ???
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3. ???
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4. ???
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5. ???
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6. ???
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7. ???
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8. ?????
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9. ???
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10. ??
11. ???
12. ??
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17.1 Process
Cutting
Book block process
Book covering process
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1. Cutting
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Cutting forces on the blade with the swinging
diagonal cut
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Knife life The smaller the knife angle, the
shorter the service life of the knife, that is,
the sharpness of the knife quickly diminishes.
Knife angle A soft cutting product requires a
smaller knife angle. Hard cutting material
requires a larger knife angle. Pressing
force Great force is required for a soft cutting
product. Low force is required for a hard cutting
product.
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2. Foldingtypes of folded sheets
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• Folding machines

a. Knife folding unit
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• Folding machines

b. Buckle folding unit
Knife shafts in a buckle plate folding unit
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Folded sheet classification
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3. Assembling/GatheringAssembling is the
production of a specific sequence of folded
sheets, leaves, or webs into a loosely jointed
block.
Basic principles for assembling signatures and
leaves (individual sheets)
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Structure of a gatherer for single-layer blocks
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4. Binding

• Types of binding

???saddle binding ??? Thread -Stitching
Seam
Seamlessperfect binding????
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A. Saddle binding
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B. ???
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C. Thread -stitching
Side-sewn binding
The thread-stitching of books is a block binding
process where the connection of the inner sheet
sections and the sheets to one another is
primarily achieved by fabric threads.
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Perfect binding
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Two-roller gluing unit
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5.Booking covering
6.cutting
7.QA Packaging
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17.2 Edition binding
Book block process
Cover process
Cover feeding
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17.2.1 Book block process
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17.2.2 Cover process
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17.2.3 Cover feeding
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17.3 packaging

• Paper packaging
• Foil packaging

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• Books packaging

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• Paper packaging80-120g/m2

• Foil packagingPE??? / PVC????

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17.4 Surface finishing
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Surface finishing

• Glazing??
• Waxing
• Coating
• Bronzing??

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Homework

• P435 Review questions 1,5,6,7,9,12.