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Re: Pressure Mounting



Dear Mrs Peranteau

Thank you very much for your information. They do help indeed as it justifies previous consultation I had.

Konstantinos Chatziantoniou
Textile Conservator
Museum of Islamic Art
Doha
Cornice Street
P.O.Box 2777
Qatar

----------------------------------------
> Date: Thu, 29 May 2008 11:13:02 -0400
> From: anne.g.peranteau@xxxxxxxxxx
> Subject: Re: Pressure Mounting
> To: TEXCONS@xxxxxxxxxxxxxxxxxx
> 
> Hi Textilians,
> 
> When I was a student I did some preliminary experiments that attempted
> to show how effective pressure mounts were at buffering fluctuations in
> RH.  An additional useful reference not on the list that Elpida just
> circulated: 
> 
> 
> Dierdre Windsor, Linda Hillyer, Dinah Eastop "The Role of Pressure
> Mounting in Textile Conservation: Recent Application of US Technique" in
> Preprints of the 13th Triennial Meeting ICOM-CC, vol II. Rio (2002) pp.
> 755-760.
> 
> 
> There were a number of problems with the experimental technique that I
> used and unfortunately I was not able to get a very good set of data
> points.  With the set up used, it was difficult to obtain data on how
> well the pressure mount could act as a buffer during extended periods of
> high humidity, and how well it could buffer repeated changes.  
> Also, the type of data logger used was a HOBO unit, about ½” thick,
> rather than the sword probe used by Windsor et al., so it had to be
> nested in a layer of Volara between the solid support and the batting,
> below the Plexiglas.  This obviously does not imitate as well the
> position of the textile in the mount.   So in conclusion, there are at
> least three aspects of the set up I would have changed:  I would have
> used a sword probe inside the pressure mount, put the whole assembly
> into a chamber much larger than the assembly, and would have engineered
> it so that the data logger/pressure mount assembly could be subjected to
> fluctuations in RH without the need to transfer it in and out of the
> chamber.
> 
> That said, during a 6-day period in the chamber, the RH inside the mount
> did rise from 55% RH of the lab environment to the 65% RH inside the
> chamber, seeming to suggest that the pressure mount was not able to
> completely buffer changes in RH.  It seemed to do better during shorter
> cycles.  I wondered at the time whether this was because a good deal of
> moisture was absorbed by the paper Tycore panel, and whether this
> phenonmenon might create problems in places where there would be
> extended periods of high humidity, mold growth, etc.  At any rate, there
> seems to be a lot of room for additional research in this area.  
> 
> Also, with regard to Konstantinos's question, I was taught to pressure
> mount (fragile Islamic textile fragments) with polyester felt; cotton
> was thought to not have adequate loft/resilience for the job.
> 
> Hope this helps, 
> 
> Anne Peranteau  
> 
> -----Original Message-----
> From: Textile Conservators [mailto:TEXCONS@xxxxxxxxxxxxxxxxxx] On Behalf
> Of 11th EBA E_CHRISTOPHORIDOU
> Sent: Thursday, May 29, 2008 3:13 AM
> To: TEXCONS@xxxxxxxxxxxxxxxxxx
> Subject: Re: Pressure Mounting
> 
> 
> Dear Konstantine
> 
> 
> 
> A very good colleague (textile conservator) and friend Morwena Stephens 
> alerted me, some years ago, on a workshop on “Contact/pressure mounting”
> 
> which was run by the UKIC and the British Museum(?).  If I remember 
> correctly, Morwena told me that the workshop was initially run in the
> USA. 
> I am sure this workshop has produced quite a lot of very useful and
> relevant 
> info on the subject, but I am afraid this is all I know about it.
> However, 
> I am attaching a short reading list which you might find helpful.
> Moreover, 
> product information sheets from manufacturing companies can provide very
> 
> useful data, which worth looking at.
> 
> 
> 
> Good luck and best regards from home!
> 
> 
> 
> Elpida Christophoridou
> 
> Textiles’ Conservator
> 
> 11th Ephorate of Byzantine Antiquities
> 
> Hellenic Ministry of Culture
> 
> 
> 
> 
> 
> ----- Original Message ----- 
> From: "K Hatziantoniou" 
> To: 
> Sent: Friday, May 23, 2008 2:05 PM
> Subject: Re: Pressure Mounting
> 
> 
>> Dear All
>>
>> I need to pressure mount several fragile islamic textiles, of 
>> relatively
>> small dimensions, for permanent exhibition in the museum environment
> with 
>> relatively stable RH and temperature. I need further information on
> which 
>> material to use for supporting the textile underneath the final cover
> of 
>> the mounted board. Polyester felt, cotton dommette or even other
> material? 
>> I am not experienced in pressure mounting and I worry about the 
>> development of micro-climate in a country with very high humidity and 
>> temperature.
>>
>> Many thank you
>>
>> Konstantinos Chatziantoniou
>> Textile Conservator
>> Museum of Islamic Art
>> Doha
>> Qatar 
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