Unicharm of Japan disclosed in USP 6 649 546 a elastic stretch thin layer material developed by Unicharm of Japan for disposable products such as diapers, sanitary napkins, incontinence products or surgical robes.
This material has a comfortable feel and consists of an elastic layer and an non-elastic fiber layer bonded to each other.
Elastic layers made of elastic fibers can be non-woven, woven or thin films.
The non-elastic layer consists of a variety of fibers, which contain a mass of 0. 1% ~ 5. Thermoplastic synthetic fiber of 0% lubricating oil.
These two structural layers can be combined by heating under pressure, ultrasonic treatment, or by acupuncture or Spurs.
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