Question Acid-free ATG?

[shopmonkey cpf]

What constitutes "acid-free" ATG? That is, IS there such an animal?
Maybe it's acrylic based, as opposed to rubber based?


Is it just a marketing ploy?

What are the "evils" of ATG? Is it just its reversibility problems? Or does it actually do harm through chemical reaction(s)?

 

[Pat Murphey]

Here is a link to 3M's technical data PDF for their 908 "acid-free" ATG.

http://multimedia.3m.com/mws/mediawebserver?mwsId=SSSSSu7zK1fslxtUn8tUlx_Gev7qe17zHvTSevTSeSSSSSS--

 

[Rob Markoff]

Scotch® ATG Gold Adhesive Transfer Tape 908 is .002" (0.05 mm) thick, acid free, pressure sensitive, permanent adhesive transfer tape.

Tape 908 is photo safe in accordance with both Black – and – White Photographic Activity Tests and Color Photographic Activity Tests (per ANSI IT9.16).

Tape 908 has a pH between 7.0 and 8.5

Ideal tape application temperature range is 70°F to 100°F (21°C to 38°C).

3M does not recommend that Scotch® ATG 908 or other Scotch® ATG Pressure Sensitive Adhesive (PSA) tapes be directly applied to or come in contact with materials or items of value including, but not limited to, photographs, any form of artwork, historical or precious documents or mementoes, etc.

 

[shopmonkey cpf]

ok thanks Pat and Rob.