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US 7,452,835 B2Granted
Nonwoven insulative blanket
AssigneePGI Polymer, Inc.
InventorCliff Bridges
Life of this patent
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Abstract
A nonwoven blanket embodying the principles of the present invention includes at least two layers, wherein a first layer comprises a spunlace fabric that exhibits one or more raised regions within the fabric. The blanket of the present invention also includes a second durable and protective layer comprising one or more layers of spunmelt fabrics, typically referred to as spunbond and meltblown fabrics. The two layers are mechanically bonded via one or more methods known in the art so as to form at least one or more insulative air pockets within the blanket.
Claims10
A limited use nonwoven insulative blanket, comprising:
- a first spunlace layer having an inner surface and outer surface, wherein said spunlace layer comprises a hydroentangled carded fibrous matrix comprising staple fibers, and wherein the spunlace layer is quilted as a mechanical post-treatment thereof;
- a second continuous filament layer having an inner surface and outer surface, wherein the inner surface of the continuous filament layer is positioned face-to-face with the inner surface of the spunlace layer;
- and
- the spunlace layer is bonded to the continuous filament layer in a pattern forming two or more insulative pockets comprising unbonded areas within the blanket, wherein said pockets enhance the insulative properties of the blanket, and wherein the blanket has a basis weight of about 85 to 200 gsm.
1 more element
Dependencies are inferred from the claim text.