Podcast
Questions and Answers
What is the term for the alignment of fibers in paper due to the paper machine's sieve movement?
What is the term for the alignment of fibers in paper due to the paper machine's sieve movement?
- Laufrichtung (correct)
- Grain direction
- Paper direction
- Fiber orientation
What determines whether a cut sheet from a larger paper sheet is classified as Schmalbahn (SB) or Breitbahn (BB)?
What determines whether a cut sheet from a larger paper sheet is classified as Schmalbahn (SB) or Breitbahn (BB)?
- Paper color.
- Paper thickness.
- How it is cut from the larger sheet. (correct)
- Paper weight.
If a paper's fibers are parallel to the longer side, what type of 'bahn' is it?
If a paper's fibers are parallel to the longer side, what type of 'bahn' is it?
- Breitbahn (BB)
- Langebahn
- Kurzbahn
- Schmalbahn (SB) (correct)
Which 'bahn' type tends to curl along its longer sides?
Which 'bahn' type tends to curl along its longer sides?
What is one method mentioned for determining the Laufrichtung of paper?
What is one method mentioned for determining the Laufrichtung of paper?
What does 'Nutzen' refer to in the context of DIN A formats and Flächenberechnung?
What does 'Nutzen' refer to in the context of DIN A formats and Flächenberechnung?
If a paper’s fibers are parallel to the shorter side, what type of 'bahn' is it?
If a paper’s fibers are parallel to the shorter side, what type of 'bahn' is it?
Which type of 'bahn' is more likely to curl along its shorter sides?
Which type of 'bahn' is more likely to curl along its shorter sides?
Which of the options is a method to determine Laufrichtung?
Which of the options is a method to determine Laufrichtung?
What is the approximate area of a sheet in A0 format?
What is the approximate area of a sheet in A0 format?
How many A3 format Nutzen fit on one A2 sheet?
How many A3 format Nutzen fit on one A2 sheet?
What does Laufrichtung mean in the context of paper manufacturing?
What does Laufrichtung mean in the context of paper manufacturing?
Which of the following is the largest DIN A format mentioned?
Which of the following is the largest DIN A format mentioned?
Which methods help determine Laufrichtung?
Which methods help determine Laufrichtung?
Which format results from halving the longer side of A1 while keeping the shorter side?
Which format results from halving the longer side of A1 while keeping the shorter side?
What is typically produced using DIN A formats?
What is typically produced using DIN A formats?
Which statement accurately describes 'Breitbahn'?
Which statement accurately describes 'Breitbahn'?
Flashcards
Laufrichtung (Paper Grain)
Laufrichtung (Paper Grain)
The direction in which the fibers align during paper manufacturing, typically lengthwise to the paper machine's movement.
Schmalbahn (SB) / Short Grain
Schmalbahn (SB) / Short Grain
Paper cut so that the grain runs parallel to the longer side
Breitbahn (BB) / Long Grain
Breitbahn (BB) / Long Grain
Paper cut so the grain runs parallel to the shorter side
DIN A-Formate
DIN A-Formate
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Nutzen (Layout)
Nutzen (Layout)
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DIN A0 Size
DIN A0 Size
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DIN A1 Size
DIN A1 Size
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DIN A2 Size
DIN A2 Size
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DIN A3 Size
DIN A3 Size
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DIN A4 Size
DIN A4 Size
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DIN A5 Size
DIN A5 Size
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Study Notes
Paper Grain Direction
- During manufacturing, fibers suspended in paper pulp align along the paper machine's longitudinal direction due to the wire mesh belt's motion
- The alignment creates a grain direction within the paper
- Depending on how a sheet is cut from the larger paper web, it results in either short grain (SB) or long grain (BB) direction
Short Grain (SB)
- Fibers run parallel to the long side of the paper: dimension a > b
- Tends to curl along its long edges
Long Grain (BB)
- Fibers run parallel to the short side of the paper: dimension a < b
- Tends to curl along its short edges
Determining Paper Grain Direction
- The grain direction can be determined through several tests:
- Tearing test
- Fingernail test
- Strip test
- Moisture test
- Folding test
DIN A-Formats
- Standard paper sizes include:
- Letterheads
- Forms
- Postcards
- Index cards
- Brochures
- Magazines
- Posters
- Sketchpads
Calculating Fomrat Sizes
- Each format is derived by halving the longer side of the previous format.
- The shorter side is kept the same
- A0 is 841 x 1189 mm
DIN A-Format Area Calculation
- An A0 sheet has an area of roughly 1 m².
- Each sheet yields two of the next smaller format size.
- "Nutzen" refers to the number of printed products that can fit on a single sheet.
- Two A3 format "Nutzen" fit on one A2 sheet.
Number of Prints
- A1 sheet yields 2 A1 "Nutzen"
- A2 sheet yields 4 A2 "Nutzen"
- A3 sheet yields 8 A3 "Nutzen"
- A4 sheet yields 16 A4 "Nutzen"
- A5 sheet yields 32 A5 "Nutzen"
- A6 sheet yields 64 A6 "Nutzen"
- A7 sheet yields 128 A7 "Nutzen"
Practice Questions
- How many A5 "Nutzen" can be cut from one A1 sheet?
- 16 "Nutzen"
- How many A5 note papers can be obtained from a stack of 25 A1 sheets?
- 400 note papers
- How many A3 sheets of cardboard are needed to produce 4000 invitation cards measuring 7.4 x 10.5 cm?
- 250 A3 sheets
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