| 摘要 |
A compressible bobbin for yarn treatment having a cylindrical framework made of a synthetic resin. The bobbin includes upper and lower end rings, circumferentially equidistantly disposed vertical frames and annular horizontal frames disposed equidistantly between the end rings. Both sides of the horizontal frames and one side of the end rings are provided with vertically upstanding piece members for regulating the degree of compression of the bobbin and acting as a stopper when compressed. The vertically upstanding piece members have each a height of one half of the interval between adjacent horizontal frames and are alternately arranged every two horizontal frames to form multiple columns. When compressed, the vertically upstanding piece members of each column abut to each intervening horizontal frame and on both sides thereof in an opposing manner. The vertically upstanding piece members located at least between the lower end ring and the lowermost horizontal frame further may be provided with auxiliary ribs that interconnect vertically, on the inner cylindrical framework, the vertically upstanding piece members and the lower end ring or lowermost horizontal frame, and when compressed, are adapted to be pliably shifted in parallel with the ring and the horizontal frame. The bobbin can be compressed uniformly and prevent yarn biting therein upon compression when used for yarn treatment, thus enabling a smooth, uniform yarn treatment.
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