Method for producing rayon by using PTT and PET

A production method and a technology for elastic filaments, which can be applied in the directions of melt spinning, filament/thread forming, and conjugated synthetic polymer rayon, etc. The problem of high cost of elastic wire, to achieve the effect of improving spinnability, good crimp elasticity, and high product grade

Inactive Publication Date: 2018-07-24
TONGKUN GRP
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Problems solved by technology

The application publication number is CN104032393 A, and the announcement date is September 10, 2014. The patent name is the Chinese patent of PTT and PET composite high elastic yarn and its production method, and the application publication number is CN 104593886 A, and the announcement date is 2015 The products involved in the Chinese patent of a production method of PTT / PET side-by-side composite elastic short fibers on May 06 belong to this type of products, but the elasticity of the cable-elastic yarn treated in a conventional non-viscosifying method only utilizes the The original natural elasticity of PTT can only achieve about 40% of its elasticity, which cannot reflect the advantages of PTT / PET two-component high elastic fiber, and cannot maximize the curl elasticity, and the cable elastic yarn produced by this conventional method High cost, poor spinnability

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  • Method for producing rayon by using PTT and PET

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Embodiment Construction

[0016] The present invention will be further described below with regard to specific embodiment:

[0017] A kind of production method that utilizes PTT and PET to produce cable elastic yarn, at first select the PTT raw material of 41-55 parts by mass and the PET raw material of 41-55 parts, the PET raw material selects the PET chip of low viscosity, and its viscosity is not higher than 0.53dl / g; The PTT raw material is viscosified through the drum, so that the viscosity of the PTT chip is higher than 1.18dl / g, and the viscosity difference between the PTT raw material and the PET raw material is maximized, and then formed by melt spinning and stretching. In this example, the PET raw material is made of Shanghai Petrochemical PET chips with a viscosity of 0.5 dl / g lower than that of conventional PET chips of 0.63 dl / g, and the number of parts by mass is 50 parts; the PTT raw material is made of U.S. DuPont's PTT chip, the mass number is 50 parts.

[0018] The specific productio...

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Abstract

The invention discloses a method for producing rayon by using PTT and PET. Firstly, the rayon is prepared from ,by mass, 41-55 parts of PTT raw materials and 41-55 parts of PET raw materials, PET slices with low viscosity is selected as the PET raw materials, and the viscosity of the PET slices is not higher than 0.53 deciliter per gram; the PTT raw materials make the viscosity of PTT slices higher than 1.18 deciliters per gram through drum tackifier, so that the viscosity difference of the PTT raw materials and PET raw materials is increased as much as possible, and then the rayon is formed by melting, spinning and stretching. The method for producing the rayon by using the PTT and the PET makes fibers exert maximum elastic performance, and improves spinnability.

Description

Technical field: [0001] The present invention relates to polyester composite yarn production technology, particularly a kind of production method utilizing PTT and PET to produce cable elastic yarn. Background technique: [0002] PTT is an excellent polymer polymer product that integrates the excellent performance indicators of various chemical synthetic fibers. It is different from high-performance fibers such as carbon fiber, aramid fiber, and spandex. It is a new polymer material characterized by its excellent comprehensive performance indicators and the appropriate improved value of some indicators. With the increasing maturity of spinning, printing and dyeing and downstream applications, the demand for PTT fibers and their products is increasing, and there is huge room for development. [0003] Among them, TS biological cable elastic yarn is a PTT / PET bicomponent high elastic fiber, which is made of bio-based raw material PTT (polytrimethylene terephthalate) and conven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/084D01D5/098D01D5/22D01D5/32D01F8/14
CPCD01D5/084D01D5/098D01D5/22D01D5/32D01F8/14
Inventor 俞洋屈汉巨刘少波黄华福李国元胡建松肖顺立屠海燕劳海英吴亚萍吕惠根
Owner TONGKUN GRP
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