PTT slicing drying method for PTT/PET composite full drafting low-elasticity network thread

A low-elasticity network wire, drying method technology, applied in drying solid materials, chemical instruments and methods, heating to dry solid materials, etc. It is not easy to control and other problems to achieve the effect of reducing damage and preventing adhesion

Inactive Publication Date: 2008-07-02
JIANGSU ZHENYANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because its pre-crystallization temperature is 40°C, it is easy to crystallize, and at the same time, the stability and uniformity of PTT slice crystallization are poor, and

Method used

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  • PTT slicing drying method for PTT/PET composite full drafting low-elasticity network thread

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Embodiment Construction

[0013] Describe the present invention in detail below in conjunction with accompanying drawing:

[0014] As shown in Figure 1, the PTT slice drying method in the PTT / PET composite full-drawing low-elastic network yarn, wherein: PET adopts the drying method when producing polyester-nylon composite yarn, and the PTT slice adopts the following drying method:

[0015] Step 1: Screening: Put the raw materials of PTT slices into the silo 1, turn on the control switch at the bottom of the silo 1, the raw materials of the PTT slices enter the vibrating screen 2 continuously, and the raw materials of the PTT slices that have been screened enter the pulse generator 4, and fail to pass The abnormal-shaped PTT slices of the sieve flow into the collection barrel 3; the PTT slice raw materials entering the pulse generator 4, under the joint action of the compressed air and the pulse generator 4, the PTT slice raw materials are sent to another silo 5;

[0016] The second step, pre-crystalliz...

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Abstract

The invention relates to a method for drying a PTT slice of a PTT/PET composite full-tension low-elasticity interlaced yarn. The invention is characterized in that the PTT slice is dried by the following steps of: 1) sorting: the PTT slice is fed, in order, through a storage hopper, an oscillating screen, a pulse generator and another storage hopper; 2) pre-crystallization: the PTT slice is fed, in order, through a shaking feeder, a fluidized bed and a drying tower, and then kept in a fluidized bed pre-crystallizer for 5-15 minutes to allow the pre-crystallization to be finished; 3) drying: the PTT slice is dried with high-temperature dried air for 4-6 hours until the water content of the uniformly-crystallized PTT slice meets the standard. The inventive drying method ensures the uniform crystallization and normal color shade of the PTT dried slice and avoids the yellowing and deterioration problems. The water content of the slice is below 50ppm, which meets the technological requirements for drying PTT-POY pre-oriented yarns as well as PET composite spinning. The spinning of PTT dried slice is stable without filament drift.

Description

Technical field: [0001] The invention relates to a drying process in the polymer spinning process, in particular to a drying method for PTT slices of PTT / PET composite full-drawn low-elastic network yarn. Background technique: [0002] PTT is polytrimethylene terephthalate, which is a new type of polymer material. It overcomes the rigidity of PET and the flexibility of PBT fiber. The fiber produced by PTT has many special properties such as excellent resilience and easy dyeing. However, because its pre-crystallization temperature is 40°C, it is easy to crystallize, and at the same time, the stability and uniformity of PTT chip crystallization are poor, and the crystallization temperature and time are not easy to control. At present, there is no clear introduction of drying technology for producing POY with PTT slices at home and abroad. Contents of the invention [0003] The purpose of the present invention is to provide a PTT chip that can be stably and uniformly crystal...

Claims

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Application Information

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IPC IPC(8): F26B17/00B07B1/28F26B3/08F26B17/14
Inventor 陈林费祥蒋守明王成
Owner JIANGSU ZHENYANG
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