Cassochrome, A specialised Printing Company
Our main Assets:
Sustainability and Quality

The gathered sections of the book are sewed (standard with white yarn). Next, the sewed book block is glued in the cover by means of hotmelt.

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•  With flaps equal or a little square at the offcut, this can, for sewed books, be made in binding line. This results in better quality.
• Long life span.

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• The hotmelt is sensitive to the solvents present in the ink, the glue might soapen. Especially in uncoated types of paper a lot of solvents remain in the paper
• Less flexibility in more paper types, fold-outs and special folding.

SPINE GLUING
HOTMELT

SPINE THICKNESS
From 2 to 60 mm

SIDE GLUING
Hotmelt till about 5 mm

GRAIN DIRECTION
Parallel to the spine

PAPER KIND BOOK BLOCK
From 60 to 250 gm²

Japanese folded 4 page sections are folded on the front (front side), this fold remains intact, and the front is not cut. Japenese paperbound books are always perfect bind. The gathered sections of the book are milled at the open spine side and are glued in the cover by means of PUR-glue. PUR-glue is the strongest glue there is. Unlike hotmelt, PUR-glue cannot be melted again after it hardens. By adding a substance (catalyst) to the hotmelt it has become, after hardening, PUR and because of this it glues excellently.

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•  With PUR-glue heavier paper types, different paper types together, calco, laminated paper, etc. can be glued together.
•  PUR-glue is insensitive to temperature and solvents. For the required specifications see perfect bind cold glue.
• Long life span.

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• The time needed for the PUR to harden can vary from 4 hours up to 3 days, depending on the humidity and the RV of the paper. PUR-glue needs moist for the hardening process.
• Moderate lay-flat. For a better lay-open, cold glue spine gluing is a solution. ( For the required specifications see perfect bind cold glue.)
• More expensive than normal paperbound in perfect bind PUR.

SPINE GLUING
PUR

SPINE THICKNESS
From 2 to 60 mm

SIDE GLUING
Hotmelt till about 5 mm

GRAIN DIRECTION
Parallel to the spine

PAPER KIND BOOK BLOCK
From 60 to 300 gm²

The gathered sections of the book are milled; the single pages brought about by this are glued in the cover by means of cold glue.

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•  The spine is more bendable than perfect bind hotmelt and perfect bind PUR.

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• The inside of the cover also has to be an uncoated paper kind.
• The spine of the cover bends when the book is used and results in unappealing wrinkles in the spine.
• The sensitivity for temperature of cold glue is less than that of hotmelt, but when used at a temperature less than five degrees ‘cold crack’ will occur. Until about one hundred degrees Celcius, there is no problem.
• About 20% more expensive than paperbound in perfect bind hotmelt.
• The time for cold glue to dry is about 24 hours.

SPINE GLUING
COLD GLUE

SPINE THICKNESS
From 2 to 60 mm

SIDE GLUING
Hotmelt till about 5 mm

GRAIN DIRECTION
Parallel to the spine

PAPER KIND BOOK BLOCK
Uncoated paper

The gathered sections of the book are milled; the single pages brought about by this are glued in the cover by means of PUR, PUR is the strongest glue there is. Unlike hotmelt, PUR cannot be melted again. By adding a substance (catalyst) to the hotmelt, it will become PUR after it hardens.

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• With PUR-glue heavier paper kinds, different paper kinds together, calco, laminated paper, etc. can be glued together.
• PUR-glue is insensitive to temperature and solvents.
• Long life span.

–

• The time needed for the PUR to harden can vary from 4 hours up to 3 days, depending on the humidity and the RV of the paper. PUR-glue needs moist for the hardening process.
• About 5% more expensive than paperbound in perfect bind hotmelt.
• Moderate lay-flat.

SPINE GLUING
PUR

SPINE THICKNESS
From 2 to 60 mm

SIDE GLUING
Hotmelt till about 5 mm

GRAIN DIRECTION
Parallel to the spine

PAPER KIND BOOK BLOCK
From 60 to 300 gm²

The gathered sections of the book are milled; the single pages brought about by this are glued in the cover by means of hotmelt.

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• Cheap binding method.

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• Poor lay-flat
• When you bend the spine of the cover, the glue will break, causing the glue to lose its functionality.
• When the hotmelt gets warmer than 60 degrees Celcius, the hotmelt will get soft again, as a result the book will fall apart.
• When the hotmelt gets colder than +8 degrees, the hotmelt, when used, will break, causing the book to fall apart.
• The hotmelt is sensitive to the solvents present in the ink, the glue might soapen. Especially in uncoated kinds of paper a lot of solvents remain in the paper.

SPINE GLUING
Hotmelt

SPINE THICKNESS
From 2 to 60 mm

SIDE GLUING
Hotmelt till about 5 mm

GRAIN DIRECTION
Parallel to the spine

PAPER KIND BOOK BLOCK
From 60 to 100 gm²
(for perfect bind paperbound of heavier kinds of paper, see Perfect bind PUR)

— Die cut
— Foil
— Embossing
— Debossing
— Laser
— UV spot
— Lamination (matt, gloss, silk, soft touch, linen structure, buckram structure, sandgrain structure, silver, gold)
— Coloured yarn
— Edge colouring
— Edge gilding
— Rounded corners
— Register die cut
— Tipp-in image
— Fold-outs
— Elastic bound
— Inserts
— Jacquet
— Bellyband
— Shrinkwrapping
— Saddle stitch
— Omega saddle stitch
— Wire-O
— Spiral binding
— Japanese notary closure
— Singer sewn
— 3 hole stitch
— Rogneras
— Foam hardcover
— Atoma — Sleeve
— PVC cover/jacquet

We do small finishes in-house like folding, cutting, scoring and packaging.

We leave bookbinding to the true specialists within this field, since this is a very different art altogether.

We work with numerous bookbinders in Belgium, The Netherlands, Germany, Switzerland, France and England.
Every country and company has its specialties and we choose the most compatible binder for your specific product.

Please find below some binding techniques for SOFTCOVER books:

— Sewn
— Glued cold glue
— Glued hotmelt
— Glued PUR
— Otabind glued / Otabind sewn
— Otastar glued / Otastar sewn
— Swiss binding – with or without linen spine (standard with linen spine) — Japanese folding
— Open spine (with or without cover) — Cover with flaps

HARDCOVER possibilities are:

— Standard Hardcover
— Flexcover
— Very thin hardcover — Halfband cover

Possibilities of hardcover finishing:

— Grey board from 1.2 mm up to 3.5 mm (2.5 mm is standard)
— Straight spine / Round spine
— Linnen cover / Laminated cover
— Headbands
— Ribbons
— Type of endpapers