Hinging-the traditional way to mount an object to a window mat-is a common practice in the case of photography or fine art, although it's suitable for almost any project,.
Different pieces require different types of hinges, and methods. The best hinges are made out of Japanese rice, paper. Wheat starch paste is the adhesive of choice, called Nori. The paste is made with 100-percent pure premium food grade wheat starch and distilled water. This is the approach used in conservation framing or what is also called Museum framing.
With this approach, the artwork is not adversely impacted by the process of mounting and the process is reversible, a key requirement of any conversation framing.
Other hinging methods are employed involving cloth tape and archival tape which enable rapid fastening of the image in position on the substrate, thereby reducing cost. This is taken into account when pricing your project. For example, using conservation Nori paste is not necessary for a commercial project that involves display prints attached to Foamcore.
Dry mounting Process
Dry mounting is a process of mounting artwork various types of substrates in order to keep it flat. Dry mounting uses a heat-activated tissue placed between the print and substrate which liquefies during the process and infuses the adhesive component into the respective parts to form a bond.
The advantage of this process is that it assures your framed print will remain wrinkle free for years to come. However, in conservation framing, the artwork is not mounted but rather hinged to appropriate backings, which is standard in museums for original art and fine art photography.
We uses a heat vacuum press for this purpose which is capable of mounting prints up to 48 x 96"
Color Mount Std vs Archival mount
Color mount: this offers best bond of image to substrate and is recommended on prints that have exposed edges especially.
Are there archival drymount tissues?
there are dry mount tissues specifically made using archival acid neutral materials which meet the test of being "archival. However, there is great debate as to whether any form of mounting can be considered archival, and in any case, the substrate was be scrutinized in such circumstances, and 100% rag mount board, 2 or 4-ply would normally be recommended in such a case.
Can the Drymount Process be Reversed
Normal drymount tissue cannot be reversed, it is permanent. However, there are special tissues which can be used if this requirement is necessary. Special types, typically archival, made from 100% acid free materials, enable the print to be subsequently removed from the substrate through "re-heating". However, this process is not perfect, and there may be cases where problems occur in the 'removal process', which is time consuming.
Archival Mounting is slightly more expensive; in theory offers the ability to REHEAT in the press and remove later at the shop after the show.
However, this product does not hold as securely, and might possibly, lift at the edges a bit in the displays- variables include humidity, light exposure, heat etc. Of course that does not matter if you are matting, which hold down the image anyway.
What type of materials are used as substrates and why?
Consideration on mounting materials vary with price being one of the primary consideration, surface smoothness, rigidity, archival qualities also factors.