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You can use vacuum cleaner bags (synthetic cloth or paper media), coffee filter media or other paper filtration media. When choosing a product to use as your filter, please triple check that it doesn’t contain harmful materials, such as fiberglass. The filtration media that we are selling in collaboration with Hedley and Bennett, as well as our DIY face mask media, DOES NOT contain fiberglass. Please see below for more information regarding this.
Use the filtration media once and dispose of it. Each filter should be discarded after a single use.
No. We take this very seriously. We have received confirmation from our factories that ALL of our vacuum bag media DOES NOT contain fiberglass, this includes both paper bags and synthetic cloth filtration media.
Our cloth vacuum bags (synthetic cloth material) are manufactured of SMS non-woven fabrics that do NOT contain fiberglass. SMS stands for (spunbond meltblown spunbond) material that we use which is a combination of polyester and polypropylene fiber. This is NOT made with glass fiber.
According to Wikipedia, melt-blown nonwovens are produced by extruding melted polymer fibers through a spin net or dye consisting of up to 40 holes per inch to form long thin fibers, which are stretched and cooled by passing hot air over the fibers as they fall from the dye. The resultant web is collected into rolls and subsequently converted to finished products. The extremely fine fibers (typically polypropylene) differ from other extrusions, particularly spun bond, in that they have low intrinsic strength but much smaller size offering key properties. Often melt blown is added to spun bond to form SM or SMS webs, which are strong and offer the intrinsic benefits of fine fibers such as fine filtration, low pressure drop as used in face masks or filters and physical benefits such as acoustic insulation as used in dishwashers. One of the largest users of SM and SMS materials is the disposable diaper and feminine care industry.
Unlike our vacuum cleaner bags, many vacuum cleaner HEPA filters are manufactured with fiberglass. We are NOT selling this in our partnership with Hedley and Bennett. We are not selling this for individuals that are making their own DIY face masks.
IF you decide to purchase filters from other companies, please make sure to do a lot of research! It is very important to make sure the filtration media you purchase does NOT have fiberglass, as some do. You do not want to breathe in Fiberglass.
The 2013 Cambridge study provides the following table:
The results from the Cambridge study. Here SD=standard deviation.
Hedley and Bennet’s mask is designed to be used with a filter inserted within the fabric. Hedley & Bennett have made an easy template for you to follow here: FILTER TEMPLATE.
The best way is to cut the top and bottom of the vacuum bag off. Then you cut up one side of the bag. Once you do that you can lay the bag out flat. You then trace the stencil on the bag material. You will get the most filters out of it by doing it this way. Cut them all out and you are done! It is that easy!
They are not direct substitutes for N95, surgical, or procedural masks and are not FDA approved. N95 respirators are in short supply. They need to be worn by people at the highest risk such as intensive care doctors or anesthesiologists.
In light of new data about how COVID-19 spreads, along with evidence of widespread COVID-19 illness in communities across the country, CDC recommends that people wear a cloth face covering to cover their nose and mouth in the community setting. This is an additional public health measure people should take to reduce the spread of COVID-19 in addition to (not instead of) social distancing, frequent hand cleaning and other everyday preventive actions. A cloth face covering is not intended to protect the wearer, but may prevent the spread of virus from the wearer to others. This would be especially important in the event that someone is infected but does not have symptoms. A cloth face covering should be worn whenever people must go into public settings (grocery stores, for example). Medical masks and N-95 respirators are reserved for healthcare workers and other first responders, as recommended by current CDC guidance. CDC Source: https://www.cdc.gov/coronavirus/2019-ncov/faq.html#basics
All Sales Are Final. No Returns or Exchanges Allowed. Your purchases help fund both companies and empowers us to donate masks to other essential services. Thank you!
The safety of the community are a priority for Think Crucial.
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