Acoustic material with liquid repellency
First Claim
1. A nonwoven acoustic insulating material having liquid repellency properties, the acoustic insulating material comprising a) a sound generation area-facing nonwoven web layer comprising a nonwoven web having a topical treatment of a fluorochemical that imparts water and low-surface-tension fluid repellency to the Sound generation area-facing nonwoven web layer, and b) a sound receiving area-facing nonwoven web layer comprising a high-loft multicomponent fiber nonwoven web layer;
- and said acoustic insulating material exhibits a sound absorption coefficient of greater than about 0.8 at a sound frequency of higher than 2500 Hz.
2 Assignments
0 Petitions
Accused Products
Abstract
A nonwoven acoustic insulating material which also provides repellency to water and low surface tension fluids. Also disclosed is a method for attenuating transmitted sound and repelling fluids which includes providing a nonwoven acoustic insulating material, the nonwoven acoustic insulating material including at least one nonwoven web having a low surface tension fluids repellency treatment, and interposing the treated nonwoven acoustic insulating material between a sound generation area and a sound receiving area.
104 Citations
16 Claims
-
1. A nonwoven acoustic insulating material having liquid repellency properties, the acoustic insulating material comprising a) a sound generation area-facing nonwoven web layer comprising a nonwoven web having a topical treatment of a fluorochemical that imparts water and low-surface-tension fluid repellency to the Sound generation area-facing nonwoven web layer, and b) a sound receiving area-facing nonwoven web layer comprising a high-loft multicomponent fiber nonwoven web layer;
- and said acoustic insulating material exhibits a sound absorption coefficient of greater than about 0.8 at a sound frequency of higher than 2500 Hz.
- View Dependent Claims (2)
- 3. A fluid repellent nonwoven acoustic insulating material comprising a sound generation area-facing nonwoven web layer and a sound receiving area-facing layer, wherein the sound generation area-facing nonwoven web layer comprises a low surface tension fluids repellency treatment and wherein the low surface tension fluids repellency treatment comprises a topical fluorochemical treatment.
-
8. A method for attenuating transmitted sound and repelling fluids, the method comprising
providing a nonwoven acoustic insulating material comprising a sound generation area-facing nonwoven web layer and a sound receiving area-facing layer, wherein the sound generation area-facing nonwoven web layer comprises a low surface tension fluids repellency treatment, wherein the low surface tension fluids repellency treatment comprises a topical fluorochemical treatment, and interposing the nonwoven acoustic insulating material between a Sound generation area and a sound receiving area.
Specification