Traditionally, the hinge is the weakest part of a book, and therefore, the part most likely to be damaged. This is true whether the book is softbound or hardbound. Book drops, abuse by patrons and poor construction exacerbate this problem.
Softbound books require an extremely flexible, yet strong tape.
The nature of a softbound book precludes the use of a very thick or heavy tape. If this kind of tape is used, it can actually increase the likelihood of damage. Hardbound books, on the other hand, will benefit from a heavier tape because the weight of the book causes additional stress to the hinge. It is the tape of choice for reinforcing hardbook book hinges. Lay one of the strips aside.