Contamination control garments
View Patent ↗A cleanroom garment containing a nanoweb bonded in a face to face relationship with a fabric, and a second fabric. The garment has a permeability of at least 1 m·min −1 ·m −2 , and a particle filtration efficiency according to IEST-RP-CC003.3 at 0.5 microns of at least 90% after one wash and at least 50% after 25 washes.
1. A reusable contamination control garment comprising an as spun nanoweb with a basis weight of between 2 and 50 grams per square meter aligned in a face to face relationship between first and second fabrics, and bonded to either or both of the fabrics wherein the first and second fabrics are a cloth made by weaving or knitting fibers, said garment having an air permeability of at least 1.0 cm 3 s −1 cm −2 and a particle filtration efficiency at 0.5 microns of at least 90% after one wash and at least 50% after 25 washes.
2. The garment of claim 1 wherein the first and second fabrics are independently taffeta, tricot or ripstop.
3. The garment of claim 1 wherein one or both of the first or second fabrics is an electrostatic dissipation fabric.
4. The garment of claim 1 wherein the nanoweb is bonded to a scrim that is bonded to one of the first or second fabrics.
5. The garment of claim 1 wherein the nanoweb is spun directly onto a scrim and the scrim plus nanoweb structure is bonded between the first and second fabrics.
6. The garment of claim 1 wherein the first and second fabrics are independently bonded to the nanoweb by a process selected from the group consisting of adhesive bonding, solvent bonding, and ultrasonic bonding.
7. The garment of claim 1 wherein the as spun nanoweb is calendered.