September 2012 E-Zine (V11#9): Define Sunday, Sep 9 2012 

Adhesive binding: Soft or hard type binding – most associated with perfect soft  binding. Pages held together by adhesive/glue, rather than any form or sewing or mechanical attachment (stapled). Block then attached to paper (soft) or hard cover case.

*Mechanical binding: Bindings utilizing a mechanical medium of fastening such as wires, staples, or plastic. Gregath classified as soft or hard type binding.

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For other writing, printing, publishing, marketing lingo, check our glossaries at http://www.gregathcompany.com/gloss.html and
http://www.gregathcompany.com/glosswrite.html

March 2004, V3#3: Production Tuesday, Jan 27 2009 

Hard Binding: Because of the importance of books, especially genealogy and history and due to the heavy usage books receive while in library, family or individual circulation, our suggestion is that books must be durable, as well as beautiful.

For this reason, our standard hard bindings we offer (and strenuously suggest) are all the ever-popular Oversewn Library Binding type, rather than the less durable (but usually cheaper) Smyth(e) Sewn binding method. In the Library Oversewn method, small groups of pages are close stitched, then stitched to the next small grouping. When all pages have been stitched, the raw book is then glued and reinforced with woven fabric.

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This section is drawn from information online at http://gregathcompany.com/hb/index.html