Disposable bag with high air permeability

Abstract

The disposable bag is comprised of at least one layer of air permeable and flexible thin material at each portion of the said bag. The air permeability of some portions of the bag is in the range of 300 ft 3 /ft 2 /min to 1500 ft 3 /ft 2 /min. The lawn debris, leaves, and particulate maters are blown into the said disposable bag by a powered machine. The said bag provides a convenient means of effective collection of the debris, leaves, and particulate maters with easy air ventilation.

1 . A disposable bag for collecting leaves, lawn debris, or particulate matter composing 
 a. a top portion and a bottom portion of the said bag, when the said bag is set horizontally, with at least one of the said top and bottom portions being made of a material with an air permeability ranging from 20 ft 3 /ft 2 /min to 1200 ft 3 /ft 2 /min, according to ASTM Standard D737-96;    b. two side portions of the said bag, when the said bag is set horizontally, made of a material with an air permeability ranging from 300 ft 3 /ft 2 /min to 1500 ft 3 /ft 2 /min, according to ASTM Standard D737-96;    c. an opening of the said bag to receive leaves, lawn debris, or particulate matter from a discharging chute of a powered tool, including but not limited to lawn mowers, leaf blowers, vacuum cleaners, grinders, and saws, or from a manual tool, such as a dustpan;    d. a tightening mechanism at the opening of the said bag;    e. a sealed end of the said bag sealing the said top, bottom and side portions, in the opposite to the above said opening;    
   
   
       2 . The disposable bag of  claim 1  wherein the said material is a fibrous nonwoven material.  
   
   
       3 . The disposable bag of  claim 1  wherein the said material is a fibrous nonwoven material reinforced with a woven screen or an extruded net.  
   
   
       4 . The disposable bag of  claim 1  wherein the said material is polymeric film, regionally perforated with holes, linear slits, biaxial slits, or the combinations, so that the perforated and the non-perforated areas form a grid-like pattern.  
   
   
       5 . The disposable bag of  claim 1  wherein the said material is paper, regionally perforated with holes, linear slits, biaxial slits, or the combinations, so that the perforated and the non-perforated areas form a grid-like pattern.  
   
   
       6 . The disposable bag of  claim 1  wherein the material of said top and/or bottom portions is a coated fibrous material with an air permeability ranging from 20 ft 3 /ft 2 /min to 1200 ft 3 /ft 2 /min.  
   
   
       7 . The disposable bag of  claim 4  wherein the regionally perforated film is reinforced with a nonwoven fabric, a woven screen, an extruded net, or their combinations.  
   
   
       8 . The disposable bag of  claim 5  wherein the regionally perforated paper is reinforced with a nonwoven fabric, a woven screen, an extruded net or their combinations.  
   
   
       9 . The disposable bag of  claim 1  wherein the said tightening mechanism is a string, a belt, or a ribbon, going through the holes at the opening end of the said bag.