
2.
The Prototype
You will think your mock-up of the idea is brilliant. The publisher
and the paper engineer will think the idea is brilliant but the mechanics
are rubbish. It is then up to the paper engineer to make changes to simplify
and strengthen the pop-ups. The result is a consultation dummy which
usually has sketches of the artwork on the pop-ups. The consultation dummy
will probably go through several modification to make it economically practical
before everyone involved (including you) approves.
3.
Costing
No project can go ahead if it will end up too
expensive to buy. This is a crucial stage when the skill and
experience of the paper engineer is required.
All the pop-up mechanisms have to be tailored for ease of production and
the total area of the paper required to produce the book established. This
process is called nesting. It is of vital importance that the area
of paper fits exactly the printing processes of the printer. A blank dummy
and a specification about the paper requirements are sent to the specialist
printer for a quote.
4.
Illustration
The paper engineer will draw up outlines for the illustrator. It is important
that the illustrator stays within the outlines. It is best if the illustrator
draws roughs first of all for the paper engineer to copy onto pop-up paper
and assemble into a working dummy. This is to check that the illustrations
will fit the mechanisms. After modifications and approval from the publisher
the illustrator can go ahead with the final art work.
5.
The final Nesting and Die-line
Everything must now be prepared for film making prior to making the printing
plates. First the paper engineer needs to draw up a die-line. The
die-line is the cutter guide used to make the blades that will cut the printed
sheets into the individual paper components. The paper engineer must then
nest all the components of the book and match or register
the pieces of artwork to the die-line. Care must be taken to use the grain
direction of the paper to give extra strength to the components.
6.
Film making and proofing
The film makers take the nesting and the artwork and combine
it all together (called imposition) and then separate all
the artwork into films representing the printing process colours. From these
films sheets of proofs are made. The proofs need to be checked
to make sure there are no mistakes in the mechanisms or colours. (There
are nearly always mistakes which mean that proof corrections need to be
made.)
7.
Printing
There are only a few printers who have the specialist skills to produce pop-up books. These printers are mostly situated in Thailand and China. Production begins conventionally enough with all the pieces and pages printed onto large sheets of paper. Next the sheets are transported to be die-cut. The cutters are made from large sheets of wood which have slits cut into them. Sharp metal blades are pushed onto the slits to create an exact match to the die-line originally drawn up by the paper engineer. The printed sheets are then stamped with the die cutter so all the component pieces of the book are separated. Next comes the complex task of assembly.
8.
Assembly
Pop-up books are assembled by hand. No machine can manage the accuracy and
delicacy that is required for a pop-up book. The scene inside the assembly
hall is reminiscent of a car production line such as you might find at a
Ford factory. The procedure of construction has been carefully analysed
and separated into individual tasks. The tasks are then taught to assemblers
who rapidly stick together their particular item, a pull-tab or a pivot,
and leave the glue to dry for a few minutes before the next assembler takes
the piece and adds it to a page. Finally all the internal pages are completed
and the cover is wrapped round. Cover assembly is usually done by a fairly
standard machine, but it is important to note that pop-up books require
a slightly specialised type of cover which can accommodate the bulking
or thickness of a pop-up book. Before any book can be shrink wrapped
the quality control department will inspect every book for flaws. Just a
little too much glue in assembly will ooze into the page and gum up the
pop-ups (not what you want in your precious masterpiece.)
9.
Delivery
One of the reasons it takes so long to get these books onto the shelves
in the shops is the delivery time. Books are bulky items and so to be economic
they are transported by sea to the receiving country's port. This can take
weeks (especially if the ship runs into bad weather) and on arrival at the
port there are the usual import and customs formalities to overcome. Finally
the books are dispatched to the publisher's warehouse before distribution
to the shops (just in time for your publication date if you are lucky).
© Mark Hiner 2002





The
design of a pop-up book has to revolve around the physical structure of the
mechanisms. Sometimes it is necessary to deviate from the intended layout
of a page but this inconsistency in design can make each page visually lively.
One interesting point to note is that you are unlikely
to see a pop-up book with multi-coloured text as for economic production several
languages have to be printed at once and it would be too expensive to have
to change more than one colour during a print run.