Disposable respirator
View Patent ↗Methods, systems and apparatus for a pouch-style mask having upper and lower mask substrates, each having a first layer comprising spunbond material and a second layer comprising meltblown material, a perimeter comprising a user contacting portion and a non-user contacting portion, and a shoulder proximate a left-side transition between the user contacting portion and the non-user contacting portion and a shoulder proximate a right-side transition between the user contacting portion and the non-user contacting portion. The mask also has a head strap assembly comprising first and second head straps each having first and second end portions, where the first end portions of the first and second head straps are attached to the left upper and lower shoulders in a side-by-side configuration and the second end portions of the first and second head straps are attached to the right upper and lower shoulders in a side-by-side configuration.
1. A pouch-style mask comprising:
a upper mask substrate comprising a first layer comprising spunbond material and a second layer comprising meltblown material and having an upper perimeter comprising a user contacting portion and a non-user contacting portion, and wherein the upper perimeter has a left upper shoulder proximate a left-side transition between the user contacting portion and the non-user contacting portion and a right upper shoulder proximate a right-side transition between the user contacting portion and the non-user contacting portion;
a lower mask substrate comprising a first layer comprising spunbond material and a second layer comprising meltblown material and having a lower perimeter comprising a user contacting portion and a non-user contacting portion, and wherein the lower perimeter has a left lower shoulder proximate a left-side transition between the user contacting portion and the non-user contacting portion and a right lower shoulder proximate a right-side transition between the user contacting portion and the non-user contacting portion, and wherein at least portions of the non-user contacting portion of the upper perimeter and the non-user contacting portion of the lower perimeter are attached;
a head strap assembly comprising a first head strap having first and second end portions and a second head strap, separate from the first head strap, having first and second end portions, and wherein the first end portions of the first and second head straps are attached to the left upper and lower shoulders in a side-by-side configuration between the upper and lower mask substrates, the second end portions of the first and second head straps are attached to the right upper and lower shoulders in a side-by-side configuration between the upper and lower mask substrates, and, in the storage configuration, the first head strap and the second head strap are parallel in a same plane, but spaced apart from each other, with the second head strap closest to the non-user contacting portion, and wherein each of the first head strap and the second head strap is at least 0.5 inches wide; and
wherein at least one of the first and second head straps have a stretch along their length of at least 150% of their unstretched length and, when stretched to this stretched length, recover more than seventy-five percent of the stretched length when the stretch tension is removed.