... -out side,a superfine PPMB filter paper between middles.Our PP composite nonwoven fabric is for mask,surgical gown,cap and ... % polypropylene2. Technics:Spunbond + meltblown +spunbond3. Weight:10-70g/m24. Size:17.5×9.5cm (for adult) 14.5×9.5cm (for ... ,anti swine flu,bacteria-retardent Sanitary nonwoven mask,medical mask,pp spunbond nonwoven fabric,