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Re: [BKARTS] PVA, internally plasticized

On Feb 7, 2006, at 3:02 PM, Nancy Nitzberg wrote:

An issue which I don't believe has yet been mentioned in regard to the quality of PVAs is that of "plasticizers."

On Feb 7, 2006, at 3:15 PM, Bruce Levy wrote:

Another factor to consider: thickness of the film applied.

And, yet another factor to take into account when dealing with any type of adhesive is the "shelf-life" -- this applies to both liquid and pressure sensitive adhesives. Many adhesives that we purchase have a shelf-life that could be anywhere from six months to two years. Unfortunately, it seems that only the original manufacturer will date their product (and, in some cases, only in a secret code unless you ask). So, if we are purchasing from a supplier who rebottles the adhesive from a larger container, we have no idea of the age of the product, nor the storage conditions.
Obviously, there are many factors to consider when selecting an adhesive for our particular work.

Bill Minter

William Minter Bookbinding & Conservation, Inc.
4364 Woodbury Pike
Woodbury, PA  16695
Fax:   814-793-4045
Email:    wminter@xxxxxxxxxxxxxx

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