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- To: Multiple recipients of list BOOK_ARTS-L <BOOK_ARTS-L@xxxxxxxxxxxxxxxx>
- Subject: Re: Adhesives
- From: "Rupert N. Evans" <r-evans4@xxxxxxxxxxxxxxxx>
- Date: Thu, 10 Oct 1996 05:21:13 -0500
- Message-id: <199610101030.DAA18975@SUL-Server-2.Stanford.EDU>
- Sender: "The Book Arts: binding, typography, collecting" <BOOK_ARTS-L@xxxxxxxxxxxxxxxx>
At 07:05 AM 10/7/96 EDT, you wrote:
><Question 1: difference between archival and non-archival?
>An Archival Adhesive, glue or paste needs to fulfil two main criteria:
>1. To be reversible, i.e. to be able to de-laminate (normally in the
>water or heat) without leaving any trace of the adhesive, glue or paste
>originally used on the cleansed material.
>2. To be of a chemical make-up, that will not damage with time the material
>being stuck . This normally means that there would be an inherent natural pH
>value of 7.0 or higher.
>Most starch based pastes and animal glues will meet the above criteria. There
>are also several specially made Archival PVAs (poly-vinyl acetate) on the
>market, which also perform well to the above rules.
How does one delaminate PVAs, archival or not?
Rupert N. Evans
101 West Windsor Road, #4107
Urbana, IL 61802-6697