Face mask
OwnerHarry Nai Shee Lee, Tommy Yuk Yin Siuinventors
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Abstract
The invention relates to a face mask comprising a compound structure with an inner layer and two sandwich layers, wherein the inner layer is made from a filter material for filtering particles and germs, the sandwich layers are made from a textile material, the inner layer is sandwiched by the sandwich layers, and the sandwich layers are bonded to the inner layer at least in sections along the perimeter of the face mask and in sections in the inner area of the face mask. In this way, a reusable face mask with enhanced filtration efficiency is provided.
Claims16
A face mask comprising a compound structure with an inner layer and two sandwich layers, wherein
- the inner layer is made from a filter material for filtering particles and germs,
- the sandwich layers are made from a textile material,
- the inner layer is sandwiched by the sandwich layers, and
- the sandwich layers are bonded to the inner layer in an inner area of the sandwich layers by application of a heat and pressure treatment over the entire surface on which they lie next to each other.
A face mask comprising a compound structure with an inner layer and two sandwich layers, wherein the inner layer is made from a melt-blown polypropylene non-woven material for filtering particles and germs,
- the sandwich layers are made from a spun bonded polypropylene non-woven material,
- the inner layer is sandwiched by the sandwich layers, and
- wherein the weight of each sandwich layers is in the range from 0.01 kg/m2 to 0.1 kg/m2, and
- wherein the compound structure is sandwiched between two outer layers which made of a textile material,
- wherein the sandwich layers are bonded to the inner layer in an inner area of the sandwich layers by application of a heat and pressure treatment over the entire surface on which they lie next to each other.
Dependencies are inferred from the claim text.