Face mask

Abstract

A face mask includes a mask body portion and left and right ear loop portions. The left and right ear loop portions each include a base portion and an ear-loop body portion. The base portion is a strap extending in the up-down direction and bonded to the mask body portion. The ear-loop body portion has both end portions bonded to both end portions of the base portion. The base portion includes a bonding zone that includes an upper-end bonding zone located at the upper end and a lower-end bonding zone located at the lower end. The upper-end bonding zone of the left ear loop portion has a right end portion that tilts toward the left as it approaches the upper side. The lower-end bonding zone of the left ear loop portion has a right end portion that tilts toward the left as it approaches the lower side.

What is claimed is: 
     
         1 . A face mask comprising:
 a mask body portion that has spreads in a right-left direction and in an up-down direction orthogonal to the right-left direction and that includes a plurality of pleats extending in the right-left direction;   a left ear loop portion mounted on a left end portion of the mask body portion; and   a right ear loop portion mounted on a right end portion of the mask body portion,   wherein the left ear loop portion and the right ear loop portion each include:   a strap base portion extending in the up-down direction and bonded to the mask body portion; and   an ear-loop body portion having both end portions bonded respectively to both end portions of the base portion,   the base portion includes a bonding zone bonded to the mask main body,   the bonding zone includes an upper-end bonding zone located at an upper end of the bonding zone and a lower-end bonding zone located at a lower end of the bonding zone,   the upper-end bonding zone of the left ear loop portion has a right end portion that tilts toward a left as the right end portion approaches an upper side, and   the lower-end bonding zone of the left ear loop portion has a right end portion that tilts toward the left as the right end portion approaches a lower side.   
     
     
         2 . The face mask according to  claim 1 , wherein
 the upper-end bonding zone of the right ear loop portion has a left end portion that tilts toward a right as the left end portion approaches the upper side, and   the lower-end bonding zone of the right ear loop portion has a left end portion that tilts toward the right as the left end portion approaches the lower side.   
     
     
         3 . The face mask according to  claim 1 , wherein
 the base portions are bonded to an outer surface of the mask body portion.   
     
     
         4 . The face mask according to  claim 3 , wherein
 the base portions are longer in the up-down direction than the mask body portion.   
     
     
         5 . The face mask according to  claim 1 , wherein
 the mask body portion is arranged between the base portions and the ear-loop body portions.   
     
     
         6 . The face mask according to  claim 1 , wherein
 the bonding zone of the left ear loop portion includes:   a first-column bonding region extending in the up-down direction; and   a second-column bonding region extending in the up-down direction and located rightward of the first-column bonding region, and   the first-column bonding region has an upper end located upward of an upper end of the second-column bonding region.   
     
     
         7 . The face mask according to  claim 1 , wherein
 in the left ear loop portion, a first angle is different from a second angle, the first angle being an acute angle formed by the right end portion of the upper-end bonding zone relative to the up-down direction, and the second angle being an acute angle formed by the right end portion of the lower-end bonding zone relative to the up-down direction.   
     
     
         8 . The face mask according to  claim 7 , wherein
 the first angle is greater than the second angle.   
     
     
         9 . The face mask according to  claim 7 , wherein
 the first angle is greater than or equal to 30° and less than or equal to 40°.   
     
     
         10 . The face mask according to  claim 7 , wherein
 the second angle is greater than or equal to 25° and less than or equal to 35°.   
     
     
         11 . The face mask according to  claim 1 , wherein
 the ear-loop body portions each include:   a strap sheet member; and   a plurality of rubber threads that are bonded to the sheet member and arranged in parallel with one another.