Insulated container

Abstract

The invention relates a container formed from a blank. The container comprises a cup body having a side wall and a bottom wall cooperate with one another to form an interior space of the container. The side wall includes an inner surface. An insulative layer is bonded to the inner surface of the side wall. The side wall is constructed from a material having a melting temperature such that the insulative layer can be bonded directly thereto when heat is applied to the inner surface of the side wall.

1 . A container comprising: 
 a sidewall having an inner surface;    an insulative layer affixed directly to the inner surface of the sidewall, wherein the insulative layer includes a mating surface that is in direct contact with the inner surface of the sidewall; and    a bottom wall sealably joined with the sidewall wherein the sidewall and the bottom wall cooperate with one another to form an interior space of the container.    
   
   
       2 . The container of  claim 1  wherein the side wall is made of a low density paperboard material.  
   
   
       3 . The container of  claim 2  wherein the paperboard layer having a material exhibits internal bond strength of at least about 100×10 −3  ft-lb f .  
   
   
       4 . The container of  claim 1  wherein the insulative layer is bonded onto the inner surface of the sidewall.  
   
   
       5 . The container of  claim 1  wherein the insulative layer is bonded to the inner surface of the side wall when the inner surface is heated to a melting temperature.  
   
   
       6 . The container of  claim 1  wherein the insulative material substantially covers the inner surface of the side wall with the exception of a top end and the side seam area.  
   
   
       7 . The container of  claim 1  wherein the insulative layer is made of a low density polyethylene.  
   
   
       8 . The container of  claim 1  wherein the insulative material has a thickness ranging from about 0.001 to about 0.25 inches.  
   
   
       9 . The container of  claim 1  wherein the container comprises a paper cup used to hold hot liquid.  
   
   
       10 . A container comprising: 
 a side wall having an inner surface;    an insulative layer bonded to the inner surface of the side wall; and    a bottom wall sealably joined with the side wall wherein the side wall and the bottom wall cooperate with one another to form an interior space of the container.    
   
   
       11 . A blank for forming a container, wherein the container comprises: 
 a cup body having a side wall and a bottom wall cooperate with one another to form an interior space of the container and wherein the side wall includes an inner surface; and    an insulative layer bonded to the inner surface of the side wall wherein the side wall being constructed from a material having a melting temperature such that the insulative layer can be bonded directly thereto when heat is applied to the inner surface of the side wall.