| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a heat-insulated cup which does not create an environmental problem in disposal processing, etc., has advantage in production cost, is superior in insulating effect and is decorative as to a heat-insulated cup for instant food or instant drink, etc., to which hot water is poured for eating or drinking. SOLUTION: A plurality of 1.0-3.0 mm diameter paper strings 20 to which an adhesive agent is impregnated are wound around and adhered to the outside surface of the paper outside wall 10a of a paper cup main body 10 comprising the paper outside wall 10a and a paper bottom wall 10b in a spiral shape or in parallel with the paper bottom wall. On the top of the paper strings 20, a paper outside sleeve 30 roughly in the same shape as the paper outside wall 10a of the paper cup main body 10 is inserted for adhesion.</p> |
