Mask
A mask is provided according to the present application. The mask includes a mask body with filtering performance and a flexible support frame. The support frame is arranged in the mask body and connected to the mask body. The mask body includes a first filter area corresponding to the support frame and a second filter area surrounding the support frame. While the mask is in use, the support frame supports the mask body, so that the first filter area and at least part of the second filter area are spaced apart from the user's face. When the mask according to the present application is worn, the support frame separates the whole first filter area and at least part of the second filter area of the mask body from the wearer's face, which significantly increases the filter area of the mask and makes the wearer's breathing smoother.
1 . A mask, comprising:
a mask body with filtering performance, wherein the mask body comprises a filter membrane layer which is made of expanded PTFE; and
a flexible support frame, wherein the support frame is arranged in the mask body and connected to the mask body, and the mask body comprises a first filter area corresponding to the support frame and a second filter area surrounding the support frame;
wherein while the mask is in use, the support frame supports the mask body, so that the first filter area and at least part of the second filter area are spaced apart from a user's face;
wherein the support frame comprises a first rod extending laterally, a second rod arranged below the first rod and extending laterally, and at least two connecting rods connected between the first rod and the second rod and laterally spaced apart; and the first rod, the second rod, and the at least two connecting rods are combined as a closed shape; wherein the closed shape is an isosceles trapezoid with a long bottom edge being located above a short bottom edge; and wherein the support frame further comprises a third rod extending laterally, and the third rod is located between the first rod and the second rod, and is connected with the connecting rods;
wherein the mask further comprises a gap filling strip adapted to fit with nose wings, and the gap filling strip is arranged on an inner surface of the mask body and extends along an upper edge of the mask body;
wherein the mask further comprises a deformable rod, and at least a middle section of the deformable rod is connected to the first rod, and wherein the deformable rod is separated from the mask body and is adjacent to the first rod; and a projection of the gap filling strip towards the mask body overlaps with at least part of the deformable rod; and
wherein the support frame and the deformable rod are made of plastic strips.
2 . The mask according to claim 1 , wherein the gap filling strip comprises two protrusions protruding inwards and a recess located between the two protrusions.
3 . The mask according to claim 1 , wherein the gap filling strip is made of closed-cell sponge or flexible plastic.
4 . The mask according to claim 1 , wherein the deformable rod is arranged on a side of the first rod facing towards the second rod, and is located on an inner side of the connecting rods.
5 . The mask according to claim 1 , wherein the first rod comprises a middle section which is part of the closed shape and lateral extension sections which are located outside the closed shape; and
the deformable rod extends laterally beyond the middle section of the first rod, but does not extend beyond the lateral extension sections.
6 . The mask according to claim 1 , wherein the mask body comprises a first set of filter layers located on an outer side of the support frame and a second set of filter layers located on an inner side of the support frame, wherein the first set of filter layers and the second set of filter layers are connected into a whole at an edge via an elastic wrapping strip.
7 . The mask according to claim 6 , wherein the first set of filter layers, the second set of filter layers and the wrapping strip are sewn together; and the wrapping strip is coated with a flexible adhesive to seal sewing stitch.
8 . The mask according to claim 6 , wherein the filter membrane layer is one of the first set of filter layers and adjacent to the support frame, and wherein the first set of filter layers further comprises a first hydrophobic cloth layer adjacent to the filter membrane layer; and
the second set of filter layers comprises a second hydrophobic cloth layer adjacent to the support frame and a hydrophilic cloth layer adjacent to the second hydrophobic cloth layer.
9 . The mask according to claim 6 , wherein the first set of filter layers and the second set of filter layers are connected together through a plurality of discretely distributed fixing points.
10 . The mask according to claim 6 , wherein a plurality of wrinkles are formed at edges of the mask body.