Apparatus and method for manufacturing masks

Abstract

An apparatus for manufacturing trapezoid-shaped masks is disclosed. The apparatus may include, a first feeding unit, for providing three or more rolled fabrics; a second feeding unit, for providing one or more rolled materials, simultaneously to the provision of the three or more rolled fabrics; a first folding and joining unit, for folding and joining together edges of three or more fabrics provided by the first feeding unit to form a joint multilayered fabric; a second folding and joining unit, for folding and joining the edges of one or more materials provided by the second feeding unit to form folded material; and a joining unit configured to join together the joint multilayered fabric and the folded material, by forming the continuous joint thereby forming at least two masks in relatively alternating positions, such that the open side of one mask is pointing in an opposite direction from the open side of the other mask.

1 .- 20 . (canceled) 
     
     
         21 . A transparent trapezoid-shaped mask comprising:
 a joint multilayered fabric comprising three or more rolled fabrics and one or more rolled materials, folded and joined together by a continuous joint to form the mask, and   wherein the continuous joint runs along two sides and a narrow base of the trapezoid, leaving an opening along a wide base of the trapezoid, and   wherein the one or more rolled materials comprises a rolled transparent polymer.   
     
     
         22 . The mask of claim  1 , further comprising a metal wire located inside a folded edge of the three or more rolled fabrics and/or the one or more rolled materials. 
     
     
         23 . The mask of claim  1 , further comprising at least one pad at an inner portion of the folded open wide base of each mask. 
     
     
         24 . The mask of claim  1 , further comprising bands located between the joint fabric and the one of more folded materials and held by the joint. 
     
     
         25 . The mask of claim  1 , wherein the continuous joint welded ultrasonically, attached by adhesive material, sewn, stamped and/or pressed. 
     
     
         26 . The mask of claim  1 , wherein the three or more fabrics are selected from:
 nonwoven fabric and filtering fabric.   
     
     
         27 . The mask of claim  1 , wherein the one or more rolled material is a transparent elastomer and/or a biaxially oriented polypropylene. 
     
     
         28 . Two or more adjacent masks according to claim  1 , interconnected by the continuous joint in relatively alternating positions, such that the open side of one mask is pointing in an opposite direction from the open side of the adjacent mask.