| 摘要 |
FIELD: portable drinking glassware. SUBSTANCE: glass is made from single blank of flexible water-impermeable sheet material formed as truncated conical surface with angle of taper ranging from 0:1 to 1:0.5. Glass is made by flattening of blank edge adjacent to apex of conical surface with following hermetical fastening of billet sides. Configuration of glass is selected such that, upon emptying, glass becomes small flat bag. Glass may be carried within book, in billfold and may be attached to beverage bottle wall. Upon usage glass is disposed and does not occupy much place in garbage tank. EFFECT: increased efficiency, convenience in usage and reduced environment contamination by producing small amount of waste. |
