Finishing and Binding

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Finishing and Binding

• By Michael Simmons

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Finishing

• A general term that applies to printing
  operations such as cutting, folding, perforating,
  die cutting, embossing, stapling, numbering,
  punching, drilling, and laminating.

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Cutting v/s Trimming

• Making larger sheets of paper smaller.

• Cutting off the uneven edges of paper
• Trimming the three sides to complete the inside
  of a book.

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Paper Cutters

• Guillotine used to cut large stacks of paper at
  one time.
• Clamp - holds the paper in place while the blade
  is forced through the paper

Automatic Guillotine Cutter
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Paper Cutter

• Cutting and trimming is an exact task. If
  inaccurate, waste can occur, which can be costly
  to the company.
• Some larger cutters have air jet beds that hold
  the paper down while they are cutting and moves
  it along the line to a finishing machine.

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Automatic Paper Cutters Safety Devices

• Nonrepeat device cutter blade will only come
  down once until reset.
• Two-hand operations buttons on both sides of
  the machine so the operator must have both hands
  clear of blade.
• Electric eye stop a sensor that stop the
  machine if a hand, arm or other object is its
  path
• Cutting shield with sensors clear shield that
  must be closed before machine will cut

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Paper Cutters

• When replacing blades use extreme cautions and
  wear proper safety equipment.
• When out of order use lock-out-tag-out

Automatic Guillotine Cutter
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Inside paper folder
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Going Green

• Recycle trimmings and incorrectly cut paper

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Folding Machine

• Smaller folding machines use rollers to bring the
  paper in.
• The paper is carried to a folder plates, the
  sheet buckles and is forced again a combination
  of rollers fold the paper.
• Some folders use a folding knife to force paper
  between the rollers.

Different types of folds.
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Folder Safety

• Tie back long hair
• Secure loose clothing and jewelry
• Keep figures clear of pinch point such as rollers
• Turn off and unplug machine before removing jams.

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Folding Machine Operations
A paper is fed in to the machine by rollers B
Paper hits the stop on the fold plate an
buckles down C Rollers catch the paper and
feed it down towards the folding rolls
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Other forms of Finishing

• Perforating placing a series of small cuts or
  slit in the substrates (ie. coupons)
• Die Cutting A process in which pressure is used
  to force a sharp metal die (steel rule) through
  the stock. Used to make irregular shapes.
• Embossing creates a raised image on the
  substrate. Substrate are pressed between two
  dies, one is relief and the other is recessed.
  The image can be raised or sunk in (debossing)
• Stamping (foil stamping) a method of
  transferring a thin layer of metallic tone or
  color to the substrate using heat and pressure.

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Other forms of Finishing

• Numbering - imprint tickets, certificates,
  checks or other item with consecutive figures.
• Punching piercing operation done by forcing a
  metal rod down thorough the paper to remove stock
• Drilling piercing operation that uses a
  revolving hollow drill bit with a sharp base.
  The waste stock is raised through the hollow
  center of the bit.
• Laminating boding of two or more material
  together to become one common until. Usually a
  thick plastic film rolled over and under the
  substrate and heated sealed together.

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Binding

• The process of joining together multiple pages of
  a printed products by various means including
  sewing, stapling, spiral metal/plastic wire, and
  adhesive.

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Basic Binding Types

• Adhesive Binding also know as padding., the
  uses glue or adhesive compound that holds the
  sheets together, but also allows them to be
  removed.
• Mechanical Binding (loose-leaf binding) broad
  category that includes different devices used to
  hold the sheets together.

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Types of Mechanical Binding

• Spiral wire
• Metal posts
• Metal/Plastic rings
• Plastic combs
• Channels that rely on friction to work

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Basic Binding Types

• Side Stitching a form of stapling in which
  metal wires is forced through the sides of the
  sheets and formed to hold the sheets together.
• Saddle Stitching metal wire (staples) forced
  through the folded edge to hold the paper
  together.
• Perfect Binding (soften cover binding) uses an
  adhesive to hold the sheets together and to
  fasten the flexible cloth or paper cover onto the
  body.

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Basic Binding Types

• Editing binding (case binding or hard binding)
  the most complex and permanent form of binding.
  A rigid cover is attached to a book body that is
  held together by sewing. Some times uses thermal
  tape.

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References
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