Recyclable sachet and methods for manufacturing same

Abstract

A recyclable single-use sachet is provided including an inner envelope, an outer envelope, an organic additive effective to facilitate biodegradation in a biologically active landfill, and a peripheral seal. The outer envelope can be formed from a single, folded, layer of material, or from multiple layers joined together. Likewise, the inner envelope can be formed from one or more layers of material. Systems and methods for manufacturing the single-use recyclable sachet are also provided.

What is claimed is: 
     
         1 . A recyclable single-use sachet, comprising:
 a first layer of material folded about a fold line, thereby forming an inner envelope;   a second layer of material positioned adjacent to the first layer of material, the second layer of material folded about the fold line, thereby forming an outer envelope;   a peripheral seal formed between adjacent portions of the inner envelope;   an organic additive effective to facilitate biodegradation in a biologically active landfill; and   the outer envelope being bonded to the inner envelope.   
     
     
         2 . The recyclable single-use sachet of  claim 1 , wherein the first material is a metal. 
     
     
         3 . The recyclable single-use sachet of  claim 1 , wherein the second material is a polymer selected from polystyrene (PS), polypropylene (PP), polyethylene terephthalate (PET), polyethylene (PE) polyvinyl chloride (PVC). 
     
     
         4 . The recyclable single-use sachet of  claim 1 , wherein the peripheral seal is a heat seal. 
     
     
         5 . The recyclable single-use sachet of  claim 1 , wherein the outer envelope being bonded to the inner envelope is only along peripheral edges thereof. 
     
     
         6 . The recyclable single-use sachet of  claim 4 , wherein the outer envelope is bonded to the inner envelope by the heat seal. 
     
     
         7 . The recyclable single-use sachet of  claim 1 , wherein the outer envelope is bonded to the inner envelope by an adhesive disposed therebetween. 
     
     
         8 . The recyclable single-use sachet of  claim 1 , further comprising a notch disposed through a peripheral edge of the sachet, the notch configured to allow a portion of the sachet to be torn therefrom. 
     
     
         9 . A recyclable single-use sachet, comprising:
 an inner envelope formed from first and second layers of a first material;   an outer envelope formed from first and second layers of a second material;   a peripheral seal formed between the first and second layers of the inner envelope;   an organic additive effective to facilitate biodegradation in a biologically active landfill; and   the outer envelope being bonded to the inner envelope.   
     
     
         10 . The recyclable, single-use sachet of  claim 9 , wherein the first material is a metal. 
     
     
         11 . The recyclable, single-use sachet of  claim 9 , wherein the second material is a polymer selected from polystyrene (PS), polypropylene (PP), polyethylene terephthalate (PET), polyethylene (PE) polyvinyl chloride (PVC). 
     
     
         12 . The recyclable, single-use sachet of  claim 9 , wherein the first layer of the outer envelope is bonded to the first layer of the inner envelope only along peripheral edges thereof. 
     
     
         13 . The recyclable, single-use sachet of  claim 9 , wherein the second layer of the outer envelope is bonded to the second layer of the inner envelope only along peripheral edges thereof. 
     
     
         14 . The recyclable, single-use sachet of  claim 9 , wherein the inner envelope of the sachet contains liquid, paste, powder, granular, or solid contents. 
     
     
         15 . The recyclable, single-use sachet of  claim 14 , wherein the solid contents comprise a three-dimensional tablet. 
     
     
         16 . A method of manufacturing a recyclable, single-use sachet, comprising the steps of:
 providing a first layer of web stock formed from a first material;   providing a second layer of web stock formed from a second material;   wherein the second material comprises an organic additive effective to facilitate biodegradation in a biologically active landfill; simultaneously feeding the first layer of web stock and the second layer of web stock, the second layer of web stock positioned adjacent to the first layer of web stock;   folding the first and second layers of web stock about a fold line so that the first layer of material forms an inner envelope and the second layer of material forms an outer envelope;   filling the inner envelope with a product;   sealing the inner envelope along the periphery thereof; and   bonding the outer envelope to the inner envelope.   
     
     
         17 . The method of  claim 16 , wherein the first material is a metal. 
     
     
         18 . The method of  claim 16 , wherein the second material is a polymer selected from polystyrene (PS), polypropylene (PP), polyethylene terephthalate (PET), polyethylene (PE) polyvinyl chloride (PVC). 
     
     
         19 . The method of  claim 16 , wherein the step of sealing the inner envelope comprises forming a heat seal. 
     
     
         20 . The method of  claim 16 , comprising bonding the outer envelope to the inner envelope by the heat seal. 
     
     
         21 . The method of  claim 16 , comprising bonding the outer envelope to the inner envelope only along peripheral edges thereof. 
     
     
         22 . The method of  claim 16 , wherein the step of bonding outer envelope to the inner envelope comprises disposing an adhesive therebetween. 
     
     
         23 . The method of  claim 16 , further comprising the step of separating the sachet from the first and second layers of web stock. 
     
     
         24 . The method of  claim 16 , further comprising the step of cutting a notch through a peripheral edge of the sachet, the notch configured to allow a portion of the sachet to be torn therefrom. 
     
     
         25 . The method of  claim 16 , wherein the step of folding the first and second layers of web stock further comprises feeding the first and second layers of web stock through a guide ring. 
     
     
         26 . The method of  claim 16 , wherein the first and second layers of web stock are provided together on a single continuous roll, the first and second layers of web stock positioned on top of each other and bonded together only along their respective edges.