Greetings all, We've increased our use of poly sleeves in cases where sourcing a large enough resealable bag was tricky (essentially making our own bags). And now use them almost exclusively as they save so much labor and cover most of our object size ranges. This greatly reduced our usage of tape as we heat seal the two open ends (sealing with two parallel lines, spaced ~ 1/2" or 1.5cm apart). Could be an option for you all as well.
We also source from Uline <https://www.uline.com/BL_2107/4-Mil-Poly-Tubing>. They have nice 4mil and 6mil thicknesses. We've found the 18" and 40" wide sleeves rather flexible in containing rolls and even large boxes, but even wider sleeves (and indeed, wider heat sealers) are available. We use this heat sealer. <https://www.uline.com/Product/Detail/H-1029/Poly-Bag-Sealers/Tabletop-Impulse-Sealer-20?keywords=H-1029+Tabletop+Impulse+Sealer+-+20%22> Another advantage, heat sealing is oddly meditative in these strange times. Hope this helps! Maria On Wed, Dec 9, 2020 at 4:03 AM 'Adrian Doyle' via MuseumPests < pestlist@googlegroups.com> wrote: > Morning from a cold soggy Britain > > > > I undertook research some time ago on polyethylene bags for freezing but > most of it was un-published. > > > > However, we did note the following things to be aware of when freezing and > perhaps someone can fill in the gaps as I don’t have the research any more. > > > > 1. Check the thickness of the polyethene and go for something which is > a thicker grade plastic as it helps prevent moisture transmission > 2. Check that the seals are well made as some of them are pretty thin > and will tear easily. > 3. Zip loc seals are not moisture resistant and need to be taped over > as well > > > > Hope that helps > > > > Adie Doyle > > IPM Manager > > British Museum > > > > > > *From:* 'Oliver, Margaret' via MuseumPests <pestlist@googlegroups.com> > *Sent:* 08 December 2020 22:06 > *To:* pestlist@googlegroups.com > *Subject:* Re: [PestList] Source for Polyethylene bags for Freezing > objects > > > > I also use bags from Uline for the freeze/thaw cycle (specifically, these > 30"x36" 8 mil poly bags > https://www.uline.com/Product/Detail/S-12510/Flat-Poly-Bags/30-x-36-8-Mil-Poly-Bags?keywords=S-12510). > They're good sized bags that allow me to twist the open end of it shut and > seal it with a releasable zip tie. > > > > Best, > > Margaret > > > > *Margaret Oliver*, M.S. > Herbarium Collections Manager > (she / her) > > The University of Tennessee, Knoxville > University of Tennessee Herbarium (TENN) > 114 Temple Hall > 1818 Andy Holt Ave. > Knoxville, TN 37996-2800 > > > > > *moliv...@utk.edu <moliv...@utk.edu> 865-974-6213 * > > *http://herbarium.utk.edu <http://herbarium.utk.edu>* > * Facebook <https://www.facebook.com/UTKHerbarium/> | Instagram > <https://www.instagram.com/utkherbarium/> | Twitter > <https://twitter.com/UTKHerbarium>* > > *Big Orange. Big Ideas.* > > > ------------------------------ > > *From:* pestlist@googlegroups.com <pestlist@googlegroups.com> on behalf > of Lisa Isbell <lisa.h.isb...@gmail.com> > *Sent:* Tuesday, December 8, 2020 4:50 PM > *To:* pestlist@googlegroups.com <pestlist@googlegroups.com> > *Subject:* Re: [PestList] Source for Polyethylene bags for Freezing > objects > > > > *[External Email]* > > I have ordered bags from Uline > <https://www.uline.com/Grp_5/Reclosable-Poly-Bags>. Some of these get up > to a sufficiently large size easily to hold a full sheet of matboard or an > archival box. > > > > Disclaimer: I am not aware of any testing having been done on these (for > additives, plasticizers, etc.) However, if one is using this only for a > freeze-thaw cycle (and not for long-term storage) it may be justifiable. > > > > Cordially, > > > > Lisa Isbell > > > > On Tue, Dec 8, 2020 at 3:22 PM Minor, Rachel <rmi...@santarosa.edu> wrote: > > Hi, Pest List People! > > I am waiting for our new chest freezer and am now researching polyethylene > bags or film for wrapping objects to be treated. I appreciate any advice on > this. I am finding lots of smaller zipper heavy 3 – 4 mil bags available > but I will also be freezing larger objects, and wonder if you recommend and > type of film and a tape that can withstand the deep freeze. Should objects > be airtight before freezing, or just well covered? > > Thanks so much for your help > > > > Rachel Minor > > Museum Supervisor/Curator > > Jesse Peter Multicultural Museum > Santa Rosa Junior College > > 1501 Mendocino Avenue > > Santa Rosa, CA 95401 > > (707) 524-1862 > > https://museum.santarosa.edu/ > > [image: email size museum logo] > > *We acknowledge that we gather at Santa Rosa Junior College on the > territorial traditional land of the Pomo People, past and present, and > honor with gratitude the land itself and the people who have stewarded it > throughout the generations.* > > > > -- > You received this message because you are subscribed to the Google Groups > "MuseumPests" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to pestlist+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/pestlist/BY5PR04MB639282A5F9DEC0716E600971C3CD0%40BY5PR04MB6392.namprd04.prod.outlook.com > <https://groups.google.com/d/msgid/pestlist/BY5PR04MB639282A5F9DEC0716E600971C3CD0%40BY5PR04MB6392.namprd04.prod.outlook.com?utm_medium=email&utm_source=footer> > . > > -- > You received this message because you are subscribed to the Google Groups > "MuseumPests" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to pestlist+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/pestlist/CAEr-EshzESOaw5827UWOdjbkYGxx_ztoyMv94%3DSAPbMhJ5uysA%40mail.gmail.com > <https://groups.google.com/d/msgid/pestlist/CAEr-EshzESOaw5827UWOdjbkYGxx_ztoyMv94%3DSAPbMhJ5uysA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > -- > You received this message because you are subscribed to the Google Groups > "MuseumPests" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to pestlist+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/pestlist/BL0PR02MB49165FE41913CC4221B93603D7CD0%40BL0PR02MB4916.namprd02.prod.outlook.com > <https://groups.google.com/d/msgid/pestlist/BL0PR02MB49165FE41913CC4221B93603D7CD0%40BL0PR02MB4916.namprd02.prod.outlook.com?utm_medium=email&utm_source=footer> > . > > -- > You received this message because you are subscribed to the Google Groups > "MuseumPests" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to pestlist+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/pestlist/PR1PR02MB4746FA49A7ED6784DFE73D9CDDCC0%40PR1PR02MB4746.eurprd02.prod.outlook.com > <https://groups.google.com/d/msgid/pestlist/PR1PR02MB4746FA49A7ED6784DFE73D9CDDCC0%40PR1PR02MB4746.eurprd02.prod.outlook.com?utm_medium=email&utm_source=footer> > . > -- Maria Fusco *Chief Conservator* *Margaret Wing Dodge Chair in Conservation* Foggy Bottom: 701 21st Street, NW • Washington, DC 20052 Avenir Center: 44930 Knoll Square • Ashburn, VA 20147 571-553-0278 • fus...@gwu.edu • museum.gwu.edu -- You received this message because you are subscribed to the Google Groups "MuseumPests" group. 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