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Re: [BKARTS] sealing device for encapsulations



I believe that Brodart sells something like the Polyweld, also
Highsmith.

MaiKätzchen
--- Chad Longley <chad.longley@xxxxxxx> wrote:

> I am looking for a Polyweld or similar device (ultrasonic is
> way out of
> budget) to use in my library.  I can absorb the price of the
> Polyweld
> made/sold by Conservation Resources, but they have none until
> further
> notice.  What other solutions are out there that I am unaware
> of?  I have
> seen the similar machine sold by Gaylord, but I generally
> refuse to pay
> whatever Gaylord wants for any of their products.  Has anyone
> used -- or
> know of anyone who has used -- heat sealers that are marketed
> to non-archive
> settings?
> 
> 
> Chad Longley
> chad.longley@xxxxxxx
>  
> 
> > -----Original Message-----
> > From: Book_Arts-L [mailto:BOOK_ARTS-L@xxxxxxxxxxxxxxxx] On 
> > Behalf Of Valinda Carroll
> > Sent: Wednesday, March 21, 2007 4:32 PM
> > To: BOOK_ARTS-L@xxxxxxxxxxxxxxxx
> > Subject: Re: [BKARTS] sealing device for encapsulations
> > 
> > "I would like to hear from those of you who have
> discontinued 
> > use of double-sided tape in your encapsulations and who are
> 
> > currently using some type of mechanical sealer to enclose
> the 
> > polyester..."
> > 
> > 
> > I am in a new lab, but my technician and intern days
> provided 
> > me the opportunity to use and observe several makes and 
> > models of welders.  At Berkeley in the mid-90's there were 
> > both a Polyweld and a Minter Ultrasonic in use. They also
> use 
> > an ultrasonic at CCAHA in Philadelphia and at Princeton, 
> > among others.  Most small labs use a heat welder, which is 
> > okay for infrequent use.  The main advantage of the
> Polyweld, 
> > Monarch, or other heat welding systems is cost, at about 
> > $2,000 US, for a table top model.  
> > 
> > Aesthetically, the heat welders leave a bead of melted 
> > polyester along the perimeter, but the ultrasonic leaves a 
> > seam with a slight margin around the perimeter of the 
> > capsule.  Where storage space is at a premium, the extra 
> > margin can be a problem, but it can be used to advantage as
> a 
> > binding margin for post-bound albums and the like. 
> > 
> > The floor-stand model Polyweld for oversized items is about
> 
> > as expensive as an ultrasonic. Since I'm in the process of 
> > equipping a lab, I got a quote from Bill Minter for an 
> > ultrasonic welder in 2006, and the range was about 
> > $20-30,000, depending on the model, shipping costs, etc.
> > 
> > The cool operating temperature, and the ability to make
> spot 
> > welds anywhere on the "page"  really sell the ultrasonic 
> > welder.  Once you have used one, it feels painful to go
> back 
> > to the "old way" with heat (with burnt mylar occasionally 
> > getting stuck to the heating element, creating  a lovely 
> > aroma). Ultimately, you have to look at the volume of work 
> > and the availability of funds for equipment.  If you have a
> 
> > decent line item for equipment, then get the ultrasonic 
> > welder, because it will pay for itself over time. (It is
> also 
> > much faster and neater than tape
> > encapsulation.) 
> > 
> > Valinda Carroll
> > Preservation Manager
> > Harvey Library
> > Hampton University
> > 
> >
>
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Pagan, Pagan, what are you finding? 
Yours is the road that winds lonely and far, 
Strange are the shadows that round you come creeping, 
Still through the clouds is the glint of a star!

From the book, Charge of the Goddess 
BY: Doreen Valiente

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