Paper Straw

Abstract

A paper straw has an inner tube, an outer tube, and a pattern portion. The inner tube and the outer tube are both tubular bodies formed by spirally winding paper sheets. The pattern portion is disposed between the inner tube and the outer tube. The paper sheets that are used to wind the inner tube and the outer tube have light-transmissive properties. Then the pattern portion can be externally displayed through the outer tube or the inner tube, and this can avoid the pattern portion directly contacting food or human body.

What is claimed is: 
     
         1 . A paper straw comprising:
 an inner tube being made of plant fibers;   an outer tube being made of plant fibers that has a light shielding rate of 10% to 70% and mounted around the inner tube coaxially; and   a pattern portion disposed between the inner tube and the outer tube.   
     
     
         2 . The paper straw as claimed in  claim 1 , wherein a material of the outer tube is selected from Parchment, Tracing Paper, and Glassine. 
     
     
         3 . A paper straw comprising:
 an inner tube being made of plant fibers that has a light shielding rate of 10% to 70%;   an outer tube being made of plant fibers and mounted around the inner tube coaxially; and   a pattern portion disposed between the inner tube and the outer tube.   
     
     
         4 . The paper straw as claimed in  claim 3 , wherein a material of the inner tube is selected from Parchment, Tracing Paper, and Glassine. 
     
     
         5 . The paper straw as claimed in  claim 1 , wherein the pattern portion is disposed on an external surface of the inner tube. 
     
     
         6 . The paper straw as claimed in  claim 3 , wherein the pattern portion is disposed on an external surface of the inner tube. 
     
     
         7 . The paper straw as claimed in  claim 1 , wherein the pattern portion is disposed on an internal surface of the outer tube. 
     
     
         8 . The paper straw as claimed in  claim 3 , wherein the pattern portion is disposed on an internal surface of the outer tube. 
     
     
         9 . The paper straw as claimed in  claim 1 , wherein an adhesive layer is disposed between the outer tube and the inner tube for adhering the inner tube and the outer tube. 
     
     
         10 . The paper straw as claimed in  claim 3 , wherein an adhesive layer is disposed between the outer tube and the inner tube for adhering the inner tube and the outer tube. 
     
     
         11 . The paper straw as claimed in  claim 9 , wherein the pattern portion is disposed on the adhesive layer. 
     
     
         12 . The paper straw as claimed in  claim 10 , wherein the pattern portion is disposed on the adhesive layer.