Method for Fabricating A Heat Isolative Paper Container

Abstract

A method for fabricating a heat isolative paper container, which provides a paper board having a plurality of seams at a circumference thereof, and then a heat isolative material containing the hollow body is coated locally on at least a surface of the paper board and exempted from the seams. The container is then folded up as a container, and the container is heated, so that a heat isolative layer is provided on the surface of the container and has a heat isolative coefficient ranging from 0.003 to 0.05. The heat isolative material is made of polyurethane, PU, acrylic resin, polyethylene (PE), polypropylene (PP), polylactide (PLA), and epoxy. In this manner, the heat isolative material containing the hollow body may achieve the efficacies of a reduced volume, a reduced transportation cost, and an improved heat isolative effect, by using an isolative layer containing a hollow body.

What is claimed is: 
     
         1 . A method for fabricating a heat isolative paper container, comprising steps of:
 (A1) providing a paper board, having a plurality of seams at a circumference thereof; and   (B1) folding the paper board into a container after locally coating a heat isolative material on at least a surface of the paper board containing a hollow body therein, heating the container so that the heat isolative material containing the hollow body therein is adhered to at least a surface of the container, so as to provide a heat isolative layer on the surface of the container, wherein the heat isolative material is selected from a group consisting of polyurethane, PU, acrylic resin, polyethylene (PE), polypropylene (PP), polylactide (PLA), and epoxy.   
     
     
         2 . The method for fabricating the heat isolative paper container as claimed in  claim 1 , wherein the container includes a paper cup body, a paper tray body and a paper lunch box. 
     
     
         3 . The method for fabricating the heat isolative paper container as claimed in  claim 1 , wherein the heat isolative layer is coated on an outer surface of the container. 
     
     
         4 . The method for fabricating the heat isolative paper container as claimed in  claim 1 , wherein the heat isolative layer is coated on an inner surface of the container. 
     
     
         5 . The method for fabricating the heat isolative paper container as claimed in  claim 1 , wherein the heat isolative layer is coated on the outer and inner surfaces of the container. 
     
     
         6 . The method for fabricating the heat isolative paper container as claimed in  claim 1 , wherein the hollow body has a particle diameter ranging from 10 to 350 μm. 
     
     
         7 . The method for fabricating the heat isolative paper container as claimed in  claim 1 , wherein the heat isolative layer of the heat isolative layer has a heat isolation coefficient ranging from 0.003 to 0.05. 
     
     
         8 . The method for fabricating the heat isolative paper container as claimed in  claim 1 , wherein the hollow body includes a hollow glass bead, a hollow ceramic bead, and a hollow plastic body. 
     
     
         9 . The method for fabricating a heat isolative paper container as claimed in  claim 1 , wherein the hollow body is in a vacuum or a non-vacuum state. 
     
     
         10 . The method for fabricating a heat isolative paper container as claimed in  claim 1 , further comprising a step of further coating a protective layer, the protective layer having a material selected from a group consisting of polyurethane, PU, acrylic resin, polyethylene (PE), polypropylene (PP), polylactide (PLA), and epoxy. 
     
     
         11 . The method for fabricating a heat isolative paper container as claimed in  claim 1 , wherein the heat isolative material containing the hollow body therein is coated as the heat isolative layer on the surface of the container by an injection forming, a vacuum forming, a rotation forming, a printing and a coating manners. 
     
     
         12 . A method for fabricating a heat isolative paper container, comprising steps of:
 (A2) providing a paper board, having a plurality of seams at a circumference thereof, the paper board being a heat isolative material containing a hollow body therein, the hollow body being exempted from each of the plurality of seams; and   (B2) folding the paper board into a container, and coating a protective layer onto at least a surface of the container.   
     
     
         13 . The method for fabricating the heat isolative paper container as claimed in  claim 12 , wherein the heat isolative material is selected from a group consisting of polyurethane, PU, acrylic resin, polyethylene (PE), polypropylene (PP), polylactide (PLA), and epoxy. 
     
     
         14 . The method for fabricating the heat isolative paper container as claimed in  claim 12 , wherein the protective layer is locally coated onto the surface of the container and is exempted from each of the plurality of seams. 
     
     
         15 . The method for fabricating the heat isolative paper container as claimed in  claim 12 , wherein the container includes a paper cup body, a paper tray body and a paper lunch box. 
     
     
         16 . The method for fabricating the heat isolative paper container as claimed in  claim 12 , wherein the hollow body has a particle diameter ranging from 10 to 350 μm. 
     
     
         17 . The method for fabricating the heat isolative paper container as claimed in  claim 1 , wherein the heat isolative layer of the heat isolative layer has a heat isolation coefficient ranging from 0.003 to 0.05. 
     
     
         18 . The method for fabricating the heat isolative paper container as claimed in  claim 1 , wherein the hollow body includes a hollow glass bead, a hollow ceramic bead, and a hollow plastic body. 
     
     
         19 . The method for fabricating a heat isolative paper container as claimed in  claim 12 , wherein the hollow body is in a vacuum or a non-vacuum state. 
     
     
         20 . The method for fabricating a heat isolative paper container as claimed in  claim 12 , wherein the protective layer is coated on an outer surface or an inner surface of the container.