Production method for PTT (Poly Trimethylene terephthalate)/PET (Poly Ethylene Terephthalate) side-by-side composite elastic short fibers
A production method and short fiber technology, which is applied in the production field of PTT/PET side-by-side composite elastic short fibers, can solve the problems of small elasticity and no elasticity, and achieve the effects of good elasticity, soft hand feeling and high bulkiness.
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[0017] Example 1
[0018] See figure 1 In Example 1 of the present invention, a 2.0dtex×38mm parallel PTT / PET composite elastic staple fiber is produced:
[0019] First, produce 5.85dtex composite yarn with side-by-side cross-section, water content in the range of 24.5%, elongation at break in the range of 450-550%. After the original yarn is drawn, the yarn will be bundled and drawn before the tension setting machine. The device performs oiling treatment on the drawn composite tow. After oiling, the tow enters the crimping machine for further crimping performance enhancement, and then enters the relaxation heat setting for oil curing and tow orientation setting, and the finalized tow passes The conveyor belt is directly sent to the cutter and then sent to the baler for baling to obtain 2.0dtex×38mm non-mechanically crimped PTT / PET parallel composite elastic short fiber.
Example Embodiment
[0020] Example 2
[0021] See figure 1 , To produce 3.0dtex×51mm mid-length parallel PTT / PET composite elastic short fiber:
[0022] Firstly, 11.50dtex composite yarn is produced, the cross-section is side by side, the water content is in the range of 24.5%, and the elongation at break is in the range of 500-550%. The device performs oiling treatment on the composite tow after drawing. After oiling, the tow enters the crimping machine for further crimping performance enhancement, and then enters the relaxation heat setting for oil curing and tow orientation setting. The finalized tow is directly After being cut by a cutting machine, it is sent to a baler for baling to obtain a 3.0dtex×51mm mid-length parallel PTT / PET composite elastic short fiber.
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