Perfect Binding

Perfect Binding is one of the core services that we provide.  We know how to deliver the best result for your project: perfect binding with hot melt, perfect binding with PUR adhesive or Lay-Flat Perfect Binding.

Pacific Bindery Services has three perfect binders:

  1. The 21-pocket binder which is capable of perfect binding with either Polyurethane Reactive (PUR) or EVA hot melt glues. It is also capable of binding Lay-Flat using PUR glue.
  2. The 18-pocket binder is capable of large, medium and shorter runs and is a conventional EVA hot melt perfect binder.
  3. Our short-run perfect binder is also a conventional EVA hot melt perfect binder for projects typically under 500 books.

Characteristics of our perfect binding are printable spines, strength in the bind and a clean, elegant look.

Click on the bars below to see more information on Perfect Binding.

21 Pocket – #1 Perfect Binder

Features, Advantages and Benefits

  • High speed – runs up to 12,000 books per hour.
  • 21 pocket gatherer.
  • Excellent output and fast turnaround.
  • Perfect for large-run jobs and also efficient for high quality small- to mid-size runs.
  • Automatic make-ready enables fast on-line, high productivity and quick delivery of finished goods.
  • Low spoilage on make-ready.
  • Twin nippers provide good results on binding very thick covers.
  • Milling saw and 3 spine prep units are the best spine preparation tools available, resulting in great binding strength.
  • Spine gluing with either conventional Hot Melt or PUR (side spine gluing – hot melt only); PUR provides extra binding strength and durability.
  • 4 line rotary scoring on covers produces a crisp and accurate spine and ensures a nice hinge for covers to open neatly and easily.
  • Automatic signature recognition system: ASIR II; reject-o-matic gate provides excellent quality control which identifies mis-feeds, blanks, out-of-register signatures on-line and stops the line on a recognized mis-feed.
  • Zenith S in-line 3-knife trimmer and stacker provides precise, in-line trimming with improved efficiency and speed.

Polyurethane Reactive (PUR) adhesive is used for Lay-Flat Binding and for specified Perfect Binding projects.

18 pocket – #2 Perfect Binder

Features, Advantages and Benefits

  • Runs up to 6,000 books per hour.
  • 18 pocket gatherer.
  • Automated signature recognition provides excellent quality control which identifies mis-feeds, blanks, out of register signatures on-line and stops the line on a recognized mis-feed.
  • Criss-cross delivery on-line results in high speed straight collating.
  • Capable of good volume, with good speed.
  • Consistent output and consistent quality. Proven technology.
  • Spine gluing with conventional Hot Melt.

Short-Run – #3 Perfect Binder

This perfect binder is the right choice for small volume and/or digitally printed perfect bound books.

Features, Advantages and Benefits

  • Ideal for quantities from 1 to 500.
  • Spine gluing with conventional Hot Melt.

Perfect Binding Specifications (3 machines)

Capable of Lay-Flat, PUR and/or Hot Melt Perfect Binding: 21 pocket Perfect Binder

Gatherer – 21 pockets plus 2 handfeed stations at back
Minimum untrimmed 4 x 5 ½”
Maximum untrimmed (max. signature width depends on spine length) 12 ¼ x 19 11/16”

Minimum untrimmed insert (must be between sigs) 3 7/8 x 4 ½”

Maximum pre-gather out of pocket 0.2” thickness
Number of hand feed stations 2
Fold-out signatures > ¾” lip only; > ½” possible with additional pocket setup (max. lip size depends on weight of stock)

Binder
Minimum untrimmed 4 x 5 ½”
Maximum untrimmed (max signature width depends on spine length) 12 ¼ x 19 11/16”

Minimum book thickness (cover to cover) 0.079″ (2mm)
Minimum book thickness (w/o cover) 0.055″

Maximum cover spine to face (Perfect Binding) 12 1/8″
Maximum cover spine to face (Lay-flat Binding) (yielding a 11 7/8” wide book) 12”

Maximum book thickness (Perfect Binding) (up to 10 7/8” width) 2 3/8”

Maximum book thickness (Lay-flat Binding) 2”

Minimum cover width 8 ¼” – minimum 4″ from edge of back cover to spine score
Maximum cover width (12” spine to face) 25 ¼”
Minimum cover length 5 ½”
Maximum cover length 20”
Minimum cover thickness (5 pt.) caliper 0.005”
Maximum cover thickness (24 pt) caliper – 0.024”
Greater than 24 pt. requires testing.

Trimmer
Minimum untrimmed 4 x 5 5/8”
Maximum untrimmed 13 3/8 x 15 1/8”
Minimum trimmed 3 7/8 x 4 7/8”
Maximum trimmed 12 3/16 x 12”
Trimming larger than 12” B.E. 12 7/16 – 13 3/8”; 13 7/8 – 14 5/16”
Minimum head, foot & face trim 1/8”
Maximum head, foot & face trim 1 9/16”
Maximum thickness 2 ¾”

Capable of Hot Melt Perfect Binding and Gathering for Mechanical Binding: 18 Pocket Perfect Binder

Gatherer – 18 pockets + 1 handfeed in front + 2 handfeed stations at back
Minimum untrimmed 4 x 5 ½”
Maximum untrimmed (max. signature width depends on spine length) 12 ¼ x 16 ½”

Minimum untrimmed insert (must be between signatures) 3 3/8 x 4 ½”

Maximum pre-gather out of pocket 5/16” thickness
Number of hand feed stations 3
Fold-out signatures (max. lip size depends on weight of stock) > ½” lip

Binder
Minimum untrimmed 4 x 5 ½”
Maximum untrimmed (max. width depends on spine length) 12 x 16 ½”
Minimum book thickness (cover to cover) 0.07″
Maximum book thickness 2 3/8”
– if flat or pressure bundled signatures; ie not newsprint (a 2 3/8” thick book can only accommodate a max. width of 10 7/8”)
Minimum cover width is 8 1/4″; Back of spine to front face edge must be 4 ¼”
Maximum cover width (12 ¼” spine to face) 25 ¼”
Minimum cover length 6”
Maximum cover length 16 11/16”
Minimum cover thickness (4 pt.) caliper 0.004”
Maximum cover thickness (18 pt.) caliper

Trimmer
Minimum untrimmed 4 x 5 ¾”
Maximum untrimmed 12 ¼ x 16 ½”
Minimum trimmed 4 x 5 ½”
Maximum trimmed 12 x 12”
Trimming larger than 12” B.E. 12 7/16 – 13 3/8”; 13 7/8 – 14 5/16”

Minimum head, foot, face trim 1/8”
Maximum head, foot, face trim 1 ½”
Maximum book thickness 2 ¾”

Short Run Perfect Binder

Minimum book block size 4 1/4 x 5 1/2″
Maximum book block size 12 ½ x 12 ½”

Minimum book thickness 1/16”
Maximum book thickness 2”

Cover basis weight range – 5 pt to 14 pt caliper

perfect binding
21 Pocket Perfect Binder
perfect binding conveyor
The Conveyor Delivery Line on the Perfect Binder