Paper cup and method for preparing the same

Abstract

A paper cup, including: a cup body including a surface, and a base. A plurality of uneven stiffeners are arranged on the surface of the cup body. A method for preparing the paper cup includes: 1) selecting polyethylene (PE) or polylactic acid (PLA) coated paper as a raw material, the PE or the PLA coated paper including: a coated side, and a printed side; 2) printing a figure on the printed side of the PE or the PLA coated paper; 3) embossing uneven stiffeners on the paper via an embossing device; 4) cutting the paper into a shape of a section as a cup body via a die cutting machine; 5) shaping the cup body and the base into the paper cup via a molding machine; and 6) sterilizing, and packaging the paper cups.

What is claimed is: 
     
         1 . A paper cup, comprising: a cup body comprising a surface, and a base; wherein a plurality of uneven stiffeners are arranged on the surface of the cup body. 
     
     
         2 . The paper cup of  claim 1 , wherein the cup body is a single layered cup body, and the uneven stiffeners are arranged on the surface. 
     
     
         3 . The paper cup of  claim 1 , wherein
 the cup body is a double layered cup body comprising an inner cup body and an outer cup body;   each cup body comprises: an inner surface, and an outer surface; the uneven stiffeners are arranged on the inner surface or the outer surface of each cup body;   the surface comprising the uneven stiffeners is an uneven surface; and   the inner cup body and the outer cup body are tightly attached.   
     
     
         4 . The paper cup of  claim 3 , wherein
 the inner surface of the inner cup body is a smooth surface, and the outer surface of the inner cup body is the uneven surface;   the inner surface of the inner cup body is the uneven surface, and the outer surface of the inner cup body is the smooth surface;   the inner surface of the outer cup body is the smooth surface, and the outer surface of the outer cup body is the uneven surface; or   the inner surface of the outer cup body is the uneven surface, and the outer surface of the outer cup body is the smooth surface.   
     
     
         5 . The paper cup of  claim 2 , wherein
 the uneven stiffeners are in regular or irregular uneven shapes;   the uneven shapes are circular point, strip, undulate, triangle, or polygon; and   the paper cup is in a shape of an inverted trapezoid or a cylinder.   
     
     
         6 . The paper cup of  claim 3 , wherein
 the uneven stiffeners are in regular or irregular uneven shapes;   the uneven shapes are circular point, strip, undulate, triangle, or polygon; and   the paper cup is in a shape of an inverted trapezoid or a cylinder.   
     
     
         7 . The paper cup of  claim 4 , wherein the uneven stiffeners are in regular or irregular uneven shapes;
 the uneven shapes are circular point, strip, undulate, triangle, or polygon; and   the paper cup is in a shape of an inverted trapezoid or a cylinder.   
     
     
         8 . The paper cup of  claim 1 , wherein
 the paper cup is made from polyethylene (PE) or polylactic acid (PLA) coated paper material.