Scotch PMA opinion?

Discussion in 'Presentation & Marketing' started by chuck94022, Apr 29, 2005.

  1. chuck94022

    chuck94022 Subscriber

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    Does anyone have experience using Scotch Positionable Mounting Adhesive? It claims to be "Acid-Free", which they qualify to be "Ph of 7 or greater as determined by modified ASTM D778-97 (by extraction)", whatever that means.

    They also say it is "Photo Safe".

    Does "Acid-Free" mean archival? They don't use that word anywhere on the box, so I'm suspicious.
     
  2. Ole

    Ole Moderator Staff Member Moderator

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    I guess it means they think it's safe, are willing to assume it's safe, and even willing to say it's safe - but don't want to be sued if it isn't?
     
  3. Bob F.

    Bob F. Member

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    In The Permanence and Care of Color Photographs, Wilhelm Imaging Research (big download here ) they state that 3M Scotch No. 568 Positionable Mounting Adhesive is OK for RC prints - not for fibre (pp 369).

    Bob.
     
  4. Ian Grant

    Ian Grant Subscriber

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    The 3M (Scotch) spray adhesives are great for many uses.

    I've used them extensively for mounting commercial work with Resin Coated papers, B&W and Colour, and prints mounted 25/30 years ago are fine.

    However I'd never dream of using them with Fibre Based papers prefering Dry mounting if it was required.

    Ian
     
  5. chuck94022

    chuck94022 Subscriber

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    Thanks all!