Patent ID: 9540746
Date: 2017-01-10
CPC Classifications: B32B,D01D,D04H,D10B

Claim:
1. A process for manufacturing a nonwoven web including recycled material, comprising the steps of: spinning spunbond fibers comprising polylactic acid and polypropylene, and accumulating the spunbond fibers to form a first deposited layer; spinning monocomponent fine fibers having an average diameter of 0.10 μm to 10 μm from meltblowing resin comprising virgin polypropylene resin, and accumulating the fine fibers to form a second deposited layer; joining the first deposited layer and the second deposited layer to form a layer combination; calender bonding the layer combination to form a nonwoven web; collecting scrap material comprising portions of the nonwoven web; mechanically dividing the scrap material; hydrolyzing polylactic acid contained in the divided scrap material to form recyclable scrap material; blending the recyclable scrap material with the meltblowing resin during said fine fibers spinning step, and thereby recycling the scrap material.