In general, fixation using sewing or fixation using ultrasonic waves and high frequency was used for mask earring straps. In order to solve the problem, the method of fixing the earring strap is to enable bonding using heat. In case of waterproofing and water repellent treatment to block splashes, the treated surface is destroyed by sewing or ultrasonic and high frequency methods. To solve the problem, heat-bonding is done using seam sealing tape that is waterproof and water repellent. Sewing and fixing method using ultrasonic waves and high frequency have several stages of work. To solve the problem, attach the four sides of the mask with seam sealing tape.
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