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What Is Perfect Binding And Burst Binding

Perfect Binding and Burst Binding are both hot melt adhesive processes.

The difference between Perfect Binding and Burst Binding is in the spine preparation. Burst Binding requires the spine to be notched, done during the folding process using a special burst notching attachment. During the binding process the glue penetrates the notches into the centre of the section.

In the Perfect Binding process the spine is milled off and the book is bound as single leaves. Perfect Binding is performed by milling off the spine and then notching the spine for the adhesive to flow into the spine paper fibers.

The spine area needs to be perfectly clean and be free from inks, varnishes, sealants and laminating liquids. Ideally, paper up to 150gsm will be ideal for perfect binding techniques, although 170 gsm art papers may be able to be bound.

The Acoro 5 Perfect Binder incorporates the latest features including keyboard entry set-up and "Section Scanners". These scanners reduce waste and errors by rejecting books being bound with duplicate or incorrect sections. 

There are 2 main types of adhesives in current use: EVA (ethyl vinyl acetate) and PUR (poly urethane reactive). EVA is the standard, "hot melt adhesive" and PUR is known for higher pull strengths. PUR is the more expensive solution.

Burst Binding is done by taking out a piece from the spine of the text during the folding stage and then the spine is not milled of at the binding stage therefore there is no allowance made at the spine. The important part of the burst binding process is that the cut away slot from the spine is done accurately and done consistently.

PUR Adhesive Application is now possible in machines used by the leading Bookbinders. PUR lasts longer than EVA hot-melt and cold-emulsion adhesives, it stands up to extreme temperatures better, and holds difficult coated papers and boards considered the strongest bookbinding adhesive on today's market.

Applications for perfect binding includes paperback novels, booklets, telephone directories and some magazines use perfect binding processes. In comparison to other binding methods available to day it can be a manageable budget.