The word is out. PUR (polyurethane reactive) is hands down the best glue for adhesive perfect binding. For durability, nothing comes close. Consider this: take a PUR-bound book, throw it in the washer and watch it disintegrate…except for the spine. No kidding, that’s how strong PUR is.
PUR is the ideal solution when perfect binding isn’t perfect enough. Try PUR for the following:
Coated text
As anyone who’s been burned before knows, you’re taking a chance trying to bind coated text with traditional hot melt perfect binding glues.
Books that must look great
Coffee table books, annual reports and other showcase pieces should be bound with PUR glue. Compared to perfect binding, less glue is required. This reduces the likelihood of unsightly glue being forced up the spine, which sometimes creates an unsightly “nail head” appearance.
Coating in the spine
PUR is the only adhesive that can securely bind projects with inks, varnishes, aqueous and other coatings bleeding into the spine.
Thick books
Be safe. Heavy, thick books are bound more securely with PUR.
Thin books
PUR produces smoother, less wavy spines than traditional perfect binding because the PUR manufacturing process runs at cooler temperatures and draws less moisture out of the paper itself. In general, very thin books – approaching 1/16”- should always be bound with PUR glue.
Cross grain text
Use PUR for books with cross grain signatures, for the same reasons as thin books.
Frequent use
Reference materials and other books subjected to frequent use should use the one glue that can take it: PUR.
Rough use
PUR binding will benefit manuals and other products used in rough workplaces, such as automotive and heavy machinery repair shops and the U.S. military.
Temperature extremes
Outdoor guide books, maps and other products that will be subjected to extreme environmental conditions should be bound with PUR. Traditional perfect binding glues can cold-crack in sub-zero temperatures, melt on hot dashboards in the southern heat or have pages detach in high humidity.
Lies flatter
Cookbooks, instruction manuals and other books that need to lie reasonably flat should be PUR bound. PUR is more flexible than traditional hot melt perfect binding glues and pages do lie flatter with less resistance when opened. Also, PUR won’t break when users crease the spine.
I’m looking for red binding glue that you used to use for binding tablets together. It’s a liquid that can be painted on and left to dry for a couple of hours.