Patent ID: 6394386
Filing Date: 2002-05-28
Classification: B65H,Y10S

Abstract:
An improved structure of paper reel for yarn packages, said paper reel having an upper end wherein the upper end of said paper reel is processed to form a round shape, and said upper end is cut interiorly to form a ladder like notch, said notch has a first shoulder and a second shoulder provided for folding of said cut upper end; a first cut wall portion having a tailing end is left on said first shoulder, and a second cut wall portion having an inner surface is left on said second shoulder; said first cut wall portion is folded to said first shoulder, the thickness formed by said first cut wall portion folded onto itself exactly equals to the thickness of said second cut wall portion, then said first cut wall portion and said second cut wall portion are simultaneously folded onto said second shoulder, the tailing end of said first cut wall portion thus gets close to the inner surface of said second cut wall portion and is fixed thereto, thereby, neither said first cut wall portion nor said second cut wall portion warps.