Ventilation system

Abstract

A ventilation system and a method for producing the ventilation system are provided. The ventilation system includes an air vent including an entangled core and a separation layer formed on a side of the entangled core. The entangled core includes air space. A method for producing the ventilation system includes bonding the entangled core to a surface of the separation layer to form an air vent.

What is claimed is: 
     
         1 . A ventilation system comprising an air vent comprising:
 an entangled core comprising air spaces; and   a separation layer formed on a side of the entangled core.   
     
     
         2 . The ventilation system according to  claim 1 , wherein the entangled core has a thickness of about 0.5 to about 5 inches. 
     
     
         3 . The ventilation system according to  claim 1 , wherein the entangled core comprises a thermoplastic material selected from the group consisting of a nylon, polyester, and polyolefin. 
     
     
         4 . The ventilation system according to  claim 3 , wherein the thermoplastic material is selected from the group consisting of polypropylene and nylon 6. 
     
     
         5 . The ventilation system according to  claim 1 , wherein the separation layer is thermally compatible with the entangled core. 
     
     
         6 . The ventilation system according to  claim 1 , wherein the separation layer is selected from the group consisting of a nonwoven textile, film, kraft paper, needled felt, spunbond material, meltblown material, or a combination thereof. 
     
     
         7 . The ventilation system according to  claim 1 , further comprising a radiant barrier comprising a reflective surface having infrared reflectivity, wherein the reflective surface of the radiant barrier is bonded to the entangled core. 
     
     
         8 . The ventilation system according to  claim 7 , wherein the reflective surface of the radiant barrier has an emissivity of 0.1 or less. 
     
     
         9 . The ventilation system according to  claim 7 , wherein the reflective surface of the radiant barrier has a reflectance of 0.6 or more. 
     
     
         10 . The ventilation system according to  claim 7 , wherein the air vent further comprises a separation layer bonded to a side of the radiant barrier that opposes the reflective surface bonded to the entangled core. 
     
     
         11 . The ventilation system according to  claim 7 , wherein the reflective surface of the radiant barrier is thermally bonded to the entangled core. 
     
     
         12 . The ventilation system according to  claim 7 , wherein the radiant barrier comprises the thermoplastic material of the entangled core. 
     
     
         13 . The ventilation system according to  claim 7 , wherein the reflective surface of the radiant barrier comprises a metal selected from the group consisting of aluminum, gold, silver, iron, chromium, nickel, copper, and alloys thereof. 
     
     
         14 . The ventilation system according to  claim 1 , wherein:
 the air vent is installed between an interior surface of a building and insulation; and   the air vent extends from a soffit vent to a ridge vent.   
     
     
         15 . The ventilation system according to  claim 14 , wherein the air vent is installed between rafters. 
     
     
         16 . The ventilation system according to  claim 1 , wherein the entangled core has a three-dimensional structure selected from the group consisting of a waffle structure, a pyramid structure, a cone structure, and a cylinder structure. 
     
     
         17 . The ventilation system according to  claim 1 , wherein the air spaces make up 90 to 99% of the entangled core. 
     
     
         18 . A method for producing the ventilation system according to  claim 1 , comprising banding the entangled core to a surface of the separation layer to form an air vent. 
     
     
         19 . The method according to  claim 18 , further comprising installing the air vent between an interior surface of a building and insulation. 
     
     
         20 . The method according to  claim 18 , wherein the air vent is installed between rafters and extends from a soffit vent to a ridge vent.