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US 9,380,893 B2Granted
Thermally insulating stretchable down feather sheet and method of fabrication
OwnerRonie Reubeninventor
Life of this patent
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Abstract
A thermally insulating stretchable down feather sheet and its method of manufacture is described. The core of the sheet is comprised of down feathers mixed with a binder which exhibits elastic properties. The core is sandwiched between a top and bottom stretchable elastomeric sheet having multi-directional stretchability. The core down feathers and the binder as well as the elastomeric sheet and bound together by heat treatment to provide a down feather insulating sheet which is stretchable in all directions without fractioning the sheet.
Claims11
A thermally insulating stretchable sheet comprising
- a core consisting of a mixture of down feathers and a binder exhibiting elastic properties that are mixed together in predetermined portions, said binder consisting of heat-fused stretchable glue particles and fused elastomeric binding strands;
- and first and second sheets of stretchable material having multi-directional
- stretchability capable of stretching in all directions bound respectively to an upper and a lower surface of said core;
- said core and said sheets of stretchable material having shape-recovery properties, wherein said thermally insulating stretchable sheet is capable of recovering substantially to its original relaxed form after stretching or deformation.
1 more element
Dependencies are inferred from the claim text.