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Fiber, method and apparatus for making said fiber

A technology for manufacturing device and fiber, which is applied in the field of fiber, the manufacturing device of the fiber and its manufacturing field, and can solve problems such as cutting length error and cutting difficulty

Inactive Publication Date: 2003-11-12
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In addition, even in the case of using a fiber bundle in which the occurrence of local small-diameter parts in the fiber axis direction has been controlled, when the stretching process is performed in the stretching process, there is still a possibility that the cutting length will be cut at a preset predetermined length. Difficult problem of cutting in the range of length
[0009] That is, even if the fiber bundle is stretched while applying a predetermined tension with a machine such as a tow cutting and sliver machine, it is usually not limited to being cut at a predetermined position, and an error occurs in the stretched cut length.

Method used

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  • Fiber, method and apparatus for making said fiber
  • Fiber, method and apparatus for making said fiber
  • Fiber, method and apparatus for making said fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0064] The fibers ejected from the nozzle were pulled up from the spinning bath, and the coagulated tow was pulled by a take-off roller at a pulling speed of 10 m / min by a counter-rotating roller driven by a servo motor. At this time, the rotation of the servo motor is centered at 10 m / min, and fluctuates from 8 to 12 m / min in a cycle of 6 Hz. Thereafter, the fiber was stretched 5 times to obtain an acrylic fiber bundle having an average single fiber degree of 3.3 dtex.

[0065] When the obtained fiber was observed with a microscope and the fiber diameter was measured, it was 16 μm to 20 μm, and the length from the small diameter portion to the small diameter portion was 120 to 140 mm.

[0066] When the acrylic fiber bundle is stretch-cut by a stretch break converter manufactured by SEYDEL, the cut length distribution is about 82% of the whole, and those less than 100 mm are about 82%. Accounted for 12%, 160mm or more accounted for about 6%.

Embodiment 2

[0072] When stretching the acrylic fiber bundle obtained in Example 1 with a stretch break converter manufactured by SEYDEL Co., Ltd., the acrylic fiber bundle obtained in Example 1 is stretched, and the cut length distribution is approximately 85% of the total length of 110 mm to 200 mm. %, less than 110mm accounts for about 10%, and more than 200mm accounts for about 5%. The shrinkage of the sliver was 26%.

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Abstract

The invention provides a fiber to form a sliver having a cut length distribution of a staple diagram falling within a narrow range and produced by the stretch breaking of the fiber with a tow converter, etc., under a specific extension of the fiber and provides an apparatus for producing the fiber and a production method of the fiber. Fibers extruded from a nozzle 2 are taken up with a take-up roll 6 while periodically varying the peripheral velocity of an inversion roll 3 placed between the nozzle 2 and the take-up roll 6 to form constricted parts along the fiber axis of the fiber 1 at nearly equal intervals. The interval of the constricted parts is set to the length nearly equal to the predetermined cut length or the length taking consideration of the elongation in the stretch breaking of the fiber.

Description

technical field [0001] The present invention relates to fibers that are stretched to form a sliver while being applied with a predetermined tension using a machine such as a tow cutting sliver in a stretch cutting step, a manufacturing device for the fiber, and a manufacturing method thereof. Background technique [0002] Generally speaking, in the spinning process, the molten or dissolved polymer is spit out from the nozzle into the solution, air or inert gas for spinning. Aqueous solutions of surfactants, oils, etc. are wound up while being bundled into predetermined fiber bundles (tows, fiber bundles) by a licker-in roller, stored in a storage container, and batch-processed. The fiber bundle thus treated is unwound from a licker-in roll or pulled out from a storage container, and is sent to a stretching process or a crimping process as a dyeing and finishing process to manufacture a fiber bundle as a product. [0003] The fiber bundle produced in this way is produced int...

Claims

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Application Information

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IPC IPC(8): D01G1/08D01D5/098D01D5/20D01F6/18D01G1/00
Inventor 大西宏明原节男
Owner MITSUBISHI CHEM CORP
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