The present invention relates to a known cold/warm insulation of cups and lid.
At present, the fast food take-out paper cups, PET cups, Styrofoam cups, and plastic lids, which have been used for many years, lack recycling technology and cannot keep warm and cold.
The present Utility invention is that: In addition to the drinks and pharmaceutical ingredients to achieve prolonged cold/warm insulation. To provide the market with a cup and lid made of a metal foil that can keep warm/cold and meet the requirements of recycling and reuse.
The present invention utilizes a plan perspective view
The function of the composite metal foil in cold/warm beverage cup application must have a low conductive lining bracket (211), because the inner cup (301) and outer cup (101) foil are too thin to support the near-vacuum space (221) to make the inner cup (301) and the outer cup (101) not contacting each other at the (20) position to achieve the purpose of keeping cold or keeping warm. For a cup-shaped beverage container, when the atmospheric pressure is applied to the outside of the inner cup (301), the outer dimensions of the inner cup (301) will not be changed due to the surface tension of the columnar metal foil. When people choose thicker or higher strength foil for the outer cup (101), the outer cup (101) shape does not change after vacuum, the inner metal foil cup (301) would not make contact with outer foil cup (101), ensure that (20) position would have near vacuum space, then there is no need to have support frame (211) and still achieve the purpose of insulation of keeping cold/warm.