Digital BW, The Print

Are you sure it was thermal lamination and not pressure sensitive adhesive 
(PSA) lamination? There are many types of each and not all include UV 
protection, some having more than others if they do have it. Some plastics 
and adhesives may not be entirely compatible with certain kinds of prints 
and inks too.

Generally speaking, sealing the surface to protect it from humidity and 
ozone is a very good thing. Just understand that whatever is used, unlike 
glazing, lamination actually becomes an integral part of the print so if 
anything happens to the laminate, the print is also ruined. For that reason, 
only the best methods and products should be used. I would prefer high end 
PSA over thermal. I don't like to generalize, but thermal laminates are 
typically designed for document protection, menus and things like that where 
low cost is the most important factor.

Some plastics will outgas, yellow and deteriorate becoming brittle over 
time, and some are much more stable to the point of being considered 
archival. The acidity of the adhesive also needs to be considered, and you 
need to stay away from cheap rubber based adhesives and use only laminates 
that use acrylic based adhesive.

I'm sure you didn't expect a simple answer, but the best one is, you get 
what you pay for.

jc

-----Original Message----- 
From: Myron Gochnauer goch@... [DigitalBlackandWhiteThePrint]
Sent: Friday, July 27, 2018 6:23 PM
To: digitalB&W group group
Subject: [Digital BW] Re: the Red River online newsletter: glass or no 
glass?

This may be anathema for our group, but:

Have any of you run across information concerning the archival qualities, or 
lack thereof, of hot lamination?

My sister recently gave me reproductions of paintings by a local artist. The 
prints were laminated, and looked surprisingly good. The laminating material 
was thicker than the stuff you normally see at stationery stores, and they 
were dead flat.

I\u2019ve laminated a couple prints for children.  11x14, with a 1 inch 
transparent margin all around, and two grommets through the top corners to 
suspend the print by a thick cord. Hangs on a nail, bedpost, or whatever, 
and can withstand sticky little fingers. Also suitable for garages, 
workshops, and the like. :-)

The prints my sister gave me were a step up in thickness and general 
refinement, but I have no idea how they were produced.

Full lamination makes me nervous, since there\u2019s no backing out, but it does 
have the advantage of sealing out a nasty environment.  I have no idea how 
most laminating films treat, and are treated by, UV light.

I have found it difficult to find technical information on laminating films. 
Can any of you help?

Myron





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Posted by: Myron Gochnauer <goch@...>
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