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Manufacturing method of pef raw yarn

A manufacturing method and yarn technology, applied in the direction of yarn, melt spinning, filament/thread forming, etc., can solve the problems of large environmental burden and achieve high production effect

Active Publication Date: 2020-04-21
BRIDGESTONE CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these synthetic fibers impose a large environmental burden because they are produced from fossil-derived raw materials

Method used

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  • Manufacturing method of pef raw yarn
  • Manufacturing method of pef raw yarn
  • Manufacturing method of pef raw yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] A PEF composition consisting only of 100% bio-based PEF having a Mw of 75,600 and an intrinsic viscosity of 0.76 dl / g was melt spun by passing it through a 96-hole die at an extrusion temperature of 275°C, and 96 The filaments were bundled into an undrawn yarn, which was continuously drawn without recovery, and then wound up to obtain a PEF raw yarn having a denier of 1,100 dtex (11.5 dtex per filament). The spinning draft is as shown in Table 1 and the time from the completion of extrusion of the filament in the spinning step to the start of drawing the undrawn yarn is not longer than 10 seconds.

Embodiment 2-3 and comparative example 1

[0101] PEF raw yarns were obtained as in Example 1, except that the spinning draft conditions were changed.

Embodiment 4

[0103] PEF raw yarns were obtained as in Example 1, except that 100% bio-based PEF with an intrinsic viscosity of 1.10 dl / g was used and the extrusion temperature was set at 310°C.

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Abstract

The object of the invention in the present application is to provide a method for producing a raw PEF yarn that can efficiently obtain a raw PEF yarn with a high storage modulus. The method for producing a PEF yarn as a polyethylene 2,5-furandicarboxylate (PEF) raw yarn is characterized in that it is provided with a spinning / stretching step in which the PEF-containing resin composition The undrawn yarn formed by melt spinning is continuously stretched without recovery to obtain the PEF raw yarn, and then the PEF raw yarn is taken up, wherein the take-up speed (T) of the PEF raw yarn is the same as that during the melt spinning. The ratio (T / E) of the speed (E) of extruding the resin composition in a filament shape was 700-2000.

Description

technical field [0001] The present disclosure relates to a method for producing polyethylene-2,5-furandicarboxylate (polyethylene-2,5-furandicarboxylate, PEF) raw yarn. Background technique [0002] Synthetic fibers made of nylon or polyethylene terephthalate (PET) have been widely used as fibers for reinforcing cords of tires and the like. However, these synthetic fibers impose a large environmental burden because they are produced from fossil-derived raw materials. [0003] This has led to the recent development of fibers produced from raw materials of natural origin for use as fibers with little environmental burden. For example, Patent Document 1 discloses fibers (PEF fibers) made of polyethylene 2,5-furandicarboxylate (PEF). [0004] prior art literature [0005] patent documents [0006] Patent Document 1: International Publication No. WO2014 / 204313 Contents of the invention [0007] The problem to be solved by the invention [0008] Patent Document 1 disc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/62D01D5/098
CPCD01D5/098D01F6/62B60C9/0042D01D5/08D02G3/48D02J1/225D07B2201/2009D10B2331/042D10B2401/063D10B2505/02
Inventor 池田优二杉本健一中嶋元
Owner BRIDGESTONE CORP
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