Structural improvement for cup container

Abstract

A structural improvement for a cup container includes the following structures. An internal layer paper cup having an internal paper cup bottom is bonded to a bottom of the cup container. A foam layer is bonded to an exterior of the internal layer paper cup. An external layer paper cup then is bonded to an exterior of the foam layer. A foam bottom and an external paper cup bottom are bonded to an external bottom of the internal paper cup bottom in order. The internal surface of the internal layer paper cup and an upper of the internal paper cup bottom are coated with waterproof layers. The foam material of the foam layer can be a biodegradable material, or non-biodegradable materials. The foregoing waterproof layers can be a biodegradable material, or can be a non-biodegradable material.

1 . A structural improvement for a cup container comprising: an internal layer paper cup having an internal paper cup bottom bonded to a bottom of the cup container; and a foam layer and an external layer paper cup bonded to an exterior of the internal layer paper cup in order. 
   
   
       2 . The structural improvement for the cup container as claimed in  claim 1 , wherein an interior of the internal layer paper cup and an upper of the internal paper cup bottom are coated with a waterproof layer respectively. 
   
   
       3 . The structural improvement for the cup container as claimed in  claim 1 , wherein a foam cup-bottom is bonded to an external bottom of the internal paper cup bottom. 
   
   
       4 . The structural improvement for the cup container as claimed in  claim 3 , wherein an external paper cup bottom is bonded to an external bottom of the foam cup-bottom. 
   
   
       5 . The structural improvement for the cup container as claimed in  claim 1 , wherein a foam material of the foam layer is a biodegradable material. 
   
   
       6 . The structural improvement for the cup container as claimed in  claim 5 , wherein the biodegradable material is polylactic acid (PLA), other biodegradable material that is similar to polyethylene terephthalate (PET), including Biomax  4024  PET produced by Dupont, biodegradable copolyester FEPOL particles produced by Taiwan Far East Textile, or one of Ecoflex/Ecovio biodegradable plastic produced by Baden Aniline and Soda Factory (BASF). 
   
   
       7 . The structural improvement for the cup container as claimed in  claim 1 , wherein a foam material of the foam layer is a non-biodegradable material. 
   
   
       8 . The structural improvement for the cup container as claimed in  claim 7 , wherein the non-biodegradable material is selected from one of polystyrene (PS), polypropylene (PP), or IXPE polyethylene adhesive foams. 
   
   
       9 . The structural improvement for the cup container as claimed in  claim 1 , wherein a way of bonding the foam layer and the external layer paper cup to the exterior of the internal layer paper cup is selected from one of ultrasonic thermal bonding, electric heat bonding, hot air bonding or radio-frequency bonding. 
   
   
       10 . A structural improvement for a cup container comprising: an internal layer paper cup having an internal paper cup bottom bonded to a bottom of the cup container; a foam layer and an external layer paper cup bonded to an exterior of the internal layer paper cup in order; and a foam cup-bottom and an external paper cup bottom bonded to an external bottom of the internal paper cup bottom in order. 
   
   
       11 . The structural improvement for the cup container as claimed in  claim 10 , wherein a foam material of the foam cup-bottom and the foam layer is biodegradable material. 
   
   
       12 . The structural improvement for the cup container as claimed in  claim 11 , wherein the biodegradable material is polylactic acid (PLA), other biodegradable material that is similar to polyethylene terephthalate (PET), including Biomax  4024  PET produced by Dupont, biodegradable copolyester FEPOL particles produced by Taiwan Far East Textile, or one of Ecoflex/Ecovio biodegradable plastic produced by Baden Aniline and Soda Factory (BASF). 
   
   
       13 . The structural improvement for the cup container as claimed in  claim 10 , wherein a foam material of the foam layer and the foam cup-bottom is a non-biodegradable material. 
   
   
       14 . The structural improvement for the cup container as claimed in  claim 13 , wherein the non-biodegradable material is selected from one of polystyrene (PS), polypropylene (PP), or IXPE polyethylene adhesive foams. 
   
   
       15 . The structural improvement for the cup container as claimed in  claim 10 , wherein a way of bonding the foam layer and the external layer paper cup to the exterior of the internal layer paper cup is selected from one of ultrasonic thermal bonding, electric heat bonding, hot air bonding or radio-frequency bonding.