Folding 2 Flashcards
What does BHR stand for?
Budgeted hourly rates
How many per hour can you fold by hand
500/hr
What is the max size paper a table top folder can fold
Letter size
Where are the gaps between the buckle folding machine
1 going in, 1 going out
Knife folding machine has palates….T or F
FALSE. It has 0 plates!
What angle if the knife for knife fold principle
90 degree angle/ right angle
What’s the speed of a buckle folder?
82”/min (high speed)
What is punch perfing
A book block with punch perforated spine (like our book block assignment)
What are the 4 types of delivery systems
- Stream delivery
- Upright (horizontal)
- Vertical stack
- Bundle
What is the formula for calculating folding time?
Time = quantity X (sheet length to fold + fold sheet gap) / folding speed/standard
It is difficult to fold paper when
- Heavy ink
- Thick paper +0.005pt
- Against the grain
When should you perforate the head edge
Only when there is a score
Folding under pressure occurs when
Rollers are used to nip paper
What side does knife machine accept first
Long edge
What edge does buckle machine accept first
Short edge
What is used replace buckle pates not required for folding ?
Sheet deflector
The reliability of folding machines is determined by the
Feeder adjustment and feeder design
Feeder suitable for short runs and small formats
Stream feeder
Feeder frequently used for high to medium runs for sheet size larger than 23x36”
Rotary pile feeders
Predominantly used in office folding machines for smallest sheet size range and shortest run
Box/suction feeder
Feeder used for short/medium run for sheet smaller than 23x39”
Vertical pile feeder
Pallet feeders are similar to
Vertical pile feeders
What type of folding rollers does the STAHL folder use?
Polyurethane rollers (each run against each other)
When thinkness is too great passing through rollers, what will occur
Crease or crows feet in innermost folded sheet
