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Subject: Re: [DCHAS-L] [EXT]Re: [DCHAS-L] COVID-19 Question

Date: Mar 26, 2020 15:18 UTC

Author: michael sayfie <000007175701fdad-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>

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Subject: [DCHAS-L] ASTM Standards & COVID-19

Date: Mar 26, 2020 16:46 UTC

Author: Grace Baysinger <graceb**At_Symbol_Here**stanford.edu>

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From: Monona Rossol <0000030664c37427-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>

Subject: Re: [DCHAS-L] [EXT]Re: [DCHAS-L] COVID-19 Question

Date: Mar 26, 2020 16:45 UTC

Reply-To: Monona Rossol

In-Reply-To: Re: [DCHAS-L] [EXT]Re: [DCHAS-L] COVID-19 Question

Demystify: 

Then the issue will be the resistance of the new shrunk fabric to air flow.  Too dense a fabric with high resistance increases breathing stress.  It also forces air to go around the mask instead of through it unless it is perfectly fit to the face and sealed.  The right material for the NIOSH approved filters is the result of a delicate balance of factors.  

All these experiments are interesting and intriguing.   But think about who the new products are "tested" on.  HCW fighting a pandemic should never also be lab rats. Instead, spend time networking with others on strategies to compel government to provide immediate funds to industry and time-limited orders (e.g., through the War Powers Act) to make face shields to extend the respirator life and to make many more N95s and ventilators. This old lady lived through WWII we all saw the awesome way industry switched completely over to making what was needed--not volunteering a percentage of their output. And the manufacturers thrived.

Our governor in NY just announced the hospitals have secured enough N95s for the next week and a half. And we don't have enough ventilators.    Let's make the right stuff to protect properly the incredible people who are risking their lives for us.

And what is occurring here in NY will be in your future.  Let's get this set up right before it gets to you.

Monona

  


-----Original Message-----
From: Yaritza Brinker <YBrinker**At_Symbol_Here**FELE.COM>
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Sent: Thu, Mar 26, 2020 10:04 am
Subject: Re: [DCHAS-L] [EXT]Re: [DCHAS-L] COVID-19 Question

This is a felt fabric made from what is basically heat-shrink electrical tubbing polymer (30% shrink) used primarily as hat forms and exotic-looking costumes.
 
If not fully shrunk when initially formed and if it were warmed again (sanitizing), it will continue to shrink down to 70% its original size.
 
Interesting idea for creating mask forms. However, it would likely be as effective as a home-sewn felt mask.
 
Thank you,
 
Yaritza Brinker
260.827.5402
 
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU> On Behalf Of Beamer, Paloma - (pbeamer)
Sent: Tuesday, March 24, 2020 9:57 AM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: Re: [DCHAS-L] [EXT]Re: [DCHAS-L] COVID-19 Question
 
** External Email **
I absolutely understand the concerns regarding homemade masks, but I keep hearing from doctors on the frontlines who are desperate and have nothing to use.
 
A NY costume designer has suggested this thermoplastic material (FOSSHAPE). When steamed (not ironed) it makes a flexible neoprene like material.
 
Any thoughts?
 
Thanks,
 
Paloma 


On Mar 24, 2020, at 5:39 AM, Bruce Van Scoy <bvanscoy**At_Symbol_Here**TWC.COM> wrote:
 
External Email
Irradiation makes some materials brittle.
Bruce Van Scoy
 
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU> On Behalf Of Rupkey, Steve
Sent: Monday, March 23, 2020 4:44 PM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: Re: [DCHAS-L] COVID-19 Question
 
Hello:
 
Has anyone considered irradiation of the N-95 respirators, using commercial food irradiation equipment?
 
I know a plan must be developed to collect, store, transport, etc. the respirators, but any thoughts on the concept?
 
Thanks,
Steve Rupkey
 
 
 
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU> on behalf of Michael <mabuczynski**At_Symbol_Here**HOTMAIL.COM>
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Date: Monday, March 23, 2020 at 3:32 PM
To: "DCHAS-L**At_Symbol_Here**PRINCETON.EDU" <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Subject: Re: [DCHAS-L] COVID-19 Question
 
The N-95 is classified as a "Single use disposable respirator" These were not meant to be reused and OSHA  requires a form to filled out that the user understands the limitations and knows how to don and doff the unit under normal circumstances.
 
The problem with any respirator including reusable types is the decontamination and storage after use/cleaning.  As a former OSHA Industrial Hygienist, I often enforced the respiratory standard with all of these requirements.