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US 12,100,378 B1Granted
Composite nonwoven felt for high draw mold areas
OwnerDanilo V. Natividad, Nicholas Kokolesinventors
Life of this patent
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Abstract
A nonwoven composite felt that is a dissipative acoustic insulation material that may be molded inside molds featuring high draw mold areas into acoustically insulating pads or sheets that provide good sound dampening characteristics and have no tears of thinning in the high draw areas.
Claims17
A dissipative acoustic insulation material comprised of:
- a primary insulating layer that is comprised of PET fibers, BiCo fibers, and recycled fiber materials known as Shoddy fibers and wherein the PET fiber content of the primary insulating layer is equal to or greater than 30% of the primary insulating layer, but not more than 60% by weight of the primary insulating layer;
- wherein the PET fibers have a staple length of 50 mm to 76 mm;
- and
- wherein the crimp frequency of the PET is in the range of 7-9 crimps per inch.
1 more element
An insulation material comprised of two layers of nonwoven material that are adhered to each other wherein the first layer has a mass per unit surface area that is in the range of
- 1
- ,
- 200
-
- grams
- m
- 2
-
- and
-
-
- 1
- ,
- 800
-
- grams
- m
- 2
- ,
- and the second layer has a mass per unit surface area in the range of
- 15
-
- grams
- m
- 2
-
- to
-
- 40
-
- grams
- m
- 2
- .
31 more elements
Dependencies are inferred from the claim text.