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Double-layered thermal insulation sleeve

  • US 10,477,999 B1
  • Filed: 09/28/2016
  • Issued: 11/19/2019
  • Est. Priority Date: 09/29/2015
  • Status: Active Grant
First Claim
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1. A double-layered thermal insulation sleeve having a frusto-conical shape and being used to cover the outer surface of a cup to maintain a water and heat barrier, said sleeve comprising,a. a first thermal insulation layer, a second thermal insulation layer, and longitudinal fold lines,b. said first thermal insulation layer having an upper channel edge and a lower channel edge;

  • c. said second thermal insulation layer having a back side, a non-slip and thermally insulative gripping surface, and an outer layer;

    d. said first thermal insulation layer being a cup facing layer and being constructed from non-woven polyester fiber, said non-woven polyester fiber having a plurality of interior air channels being disposed on said first thermal insulation layer, said plurality of interior air channels having a plurality of bonding lines for connection to said second thermal insulation layer and forming a bonding site with said second thermal insulation layer, adhesive being used for fixedly attaching said bonding lines of said first thermal insulation layer to said back side of said second thermal insulation layer for permanent connection to said second thermal insulation layer and thereby creating said double-layered thermal insulation sleeve wherein said first thermal insulation layer is a cup facing layer and said second thermal insulation layer is said non-slip and thermally insulative gripping surface, said adhesive being placed between one of said bonding lines and said back side of said second thermal insulation layer in overlapping relationship, said plurality of interior air channels retaining said water and heat that is released from said cup, said fluid and said heat being released in an upward and downward direction in said plurality of interior air channels and from said upper channel edge and said lower channel edge, said upper channel edge and said lower channel edge being release points for said water and said heat from said first thermal insulation layer and thereby directing said heat and said fluids away from the hands of a user;

    e. said outer layer of said second thermal insulation layer being constructed from embossed paper having outward facing bumps so as to provide said non-slip and thermally insulative gripping surface for said user, said second thermal insulation layer having poly-coating being applied thereon and wherein said poly-coating provides a moisture barrier by strengthening said second thermal insulation layer and prevents said liquid and said heat from permeating said second thermal insulation layer;

    f. said longitudinal fold lines being arranged on said double-layered thermal insulation sleeve and allowing said double-layered thermal insulation sleeve to be folded into a flattened configuration along said longitudinal folds lines and stored for reuse.

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