Angie, Our heat-based encapsulator was created by a single person in the early 1980s. He produced 20 or so devices, and while it can be temperamental sometimes, it's still going strong for the most part. Metal, heat, edges -- not horribly complex, but also takes up quite a bit of space when you combine it with the dedicated table space and holder for the rolls of mylar. My understanding is that there is no Holy Grail of solutions out there, but I'd love to be proven wrong. Craig Craig Haggit Senior Catalog Librarian, Western History and Genealogy Dept. Denver Public Library 10 West 14th Ave. Parkway Denver, CO 80204 720-865-1813 [log in to unmask] On Thu, Apr 19, 2018 at 11:51 AM, Angela R Cope <[log in to unmask]> wrote: > Ok. Now, will anyone tell me what kind of a heat sealer you have? > Obviously, my library should look into getting one. > > > Angie > > > ------------------------------ > *From:* Maps-L: Map Librarians, etc. <[log in to unmask]> on behalf > of Wagner, Leslie A <[log in to unmask]> > *Sent:* Thursday, April 19, 2018 12:47 PM > > *To:* [log in to unmask] > *Subject:* Re: [MAPS-L] Tape for Mylaring a map? > > > Actually, the Mylar’s intrinsic static electricity keeps the maps > well-seated unless they are stored vertically. If they are stored flat in > drawers and moved infrequently, there are obviously few issues. However, > we’ve pretty much stopped using tape at all, and instead use a heat sealing > method to close the edges of the Mylar sleeve on 2 or 3 sides. > > > > > > Leslie Wagner > > Associate Archivist > > University of Texas at Arlington Libraries > > 817-272-6209 > > [log in to unmask] > > > > Chair, ALA MAGIRT > > Former Chair, TLA AGLHRT > > Member SAA, SSA, TLA, ALA, TSHA, TSGS, TMS > > > > *From:* Maps-L: Map Librarians, etc. [mailto:[log in to unmask]] *On > Behalf Of *Angela R Cope > *Sent:* Thursday, April 19, 2018 12:39 PM > *To:* [log in to unmask] > *Subject:* Re: Tape for Mylaring a map? > > > > Louise's expert suggests using a much larger sleeve than the map but I > suggest caution in that regard. I think you need to allow 1/4-1/2 inch gap > between the tape and the paper map but much wider than that may result in > the map slipping around inside the sleeve and getting damaged (edges and/or > print). > > > > Here's a document that tells how to encapsulate a map. > > > > https://www.nps.gov/museum/publications/conserveogram/13-03.pdf > > Polyester Encapsulation - National Park Service > <https://www.nps.gov/museum/publications/conserveogram/13-03.pdf> > > www.nps.gov > > July 1993 Polyester Encapsulation Polyester encapsulation is a way of > sandwiching a paper object between two pieces of stiff, chemically inert, > clear plastic. > > Sorry I didn't forward this link sooner. I just first remembered it ... > > > > Angie > > > > > > Angie Cope > > AGS Library, UW Milwaukee Libraries > > 2311 E. Hartford Avenue > <https://maps.google.com/?q=2311+E.+Hartford+Avenue+%0D%0A+%0D%0A+%0D%0A+Milwaukee,+Wisconsin+53211&entry=gmail&source=g> > > Milwaukee, Wisconsin 53211 > <https://maps.google.com/?q=2311+E.+Hartford+Avenue+%0D%0A+%0D%0A+%0D%0A+Milwaukee,+Wisconsin+53211&entry=gmail&source=g> > > > > http://uwm.edu/libraries/agsl/ > > M-F 8:00am-4:30pm [log in to unmask] (414)229-6282 > > 43°03'8"N 87°57'21"W > > [image: 1505846149570_image001.png] > > > > > > > > > ------------------------------ > > *From:* Maps-L: Map Librarians, etc. <[log in to unmask]> on behalf > of Ratliff, Louise <[log in to unmask]> > *Sent:* Thursday, April 19, 2018 12:07 PM > *To:* [log in to unmask] > *Subject:* Re: [MAPS-L] Tape for Mylaring a map? > > > > Hello all, > > Here are some thoughts from one of our preservation staff at UCLA. > > --Louise > > > > Ideally Mylar encapsulations should be welded with either heat or an > ultrasonic welder. Tape is just not ideal as tape adhesive tends to leach > out a little around the edges of the tape over time. If the University of > Northern Iowa does not have access to an ultrasonic welder or a heat > welder, and they must use tape, this is the kind of double-sided that’s > typically used, and it would be the ¼” wide tape: > > > > http://www.gaylord.com/Preservation/Conservation- > Supplies/Tape/3M%26%23153%3B-415-Polyester-Double-Sided- > Tape-%2836-yds-%29/p/HYB00644 > > > <http://www.gaylord.com/Preservation/Conservation-Supplies/Tape/3M%26%23153%3B-415-Polyester-Double-Sided-Tape-%2836-yds-%29/p/HYB00644> > > 3M™ 415 Polyester Double-Sided Tape (36 yds.) | Tape ... > <http://www.gaylord.com/Preservation/Conservation-Supplies/Tape/3M%26%23153%3B-415-Polyester-Double-Sided-Tape-%2836-yds-%29/p/HYB00644> > > www.gaylord.com > > 3M 415 Polyester Double-Sided Tape (36 yds.) features a high-tack acrylic > adhesive that won't dry up, crack or yellow. The tape is ideal for > encapsulation and making special enclosures and mounts. > > > > > > If at all possible, I would recommend having a much larger mylar sleeve > than the map itself, leaving as much margin between the map and the taped > edge of the mylar encapsulation to minimize potential contact of map to > leached adhesive. > > > > > > > > *From:* Maps-L: Map Librarians, etc. [mailto:[log in to unmask] > <[log in to unmask]>] *On Behalf Of *Susan Moore > *Sent:* Wednesday, April 18, 2018 2:21 PM > *To:* [log in to unmask] > *Subject:* Tape for Mylaring a map? > > > > Greetings! > > > > We ahve a map that we would like to encapsulate in Mylar. We've got the > Mylar that has been handed down from map librarians past put we don't have > any way of sealing the Mylar. At one point, they apparently used some type > of double-sided tape. Since this is a map from the 1890s, I'd like to do > right by it. What tape, if any, should we use to seal the Mylar. (And yes, > I'll leave some sections unsealed to allow for off-gassing.) > > > > Susan Moore > > University of Northern Iowa > > Cedar Falls, IA 50614 > > [log in to unmask] > --