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Method for production of island type composite industrial yarn

A production method and technology of industrial yarn, applied in the direction of conjugated synthetic polymer artificial filament, melt spinning method, etc., can solve the problems of decreased fiber strength, original performance of skin-core composite fiber cannot be normally exerted, and the effect is not very significant, etc. , to achieve the effect of excellent mechanical properties

Inactive Publication Date: 2006-10-11
SINOSELEN HI TECH
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] JP-1-97211 bulletin introduces the use of polyester for the core layer, and polyamide 6 and polyamide 66 copolyamide skin-core composite for the skin layer. Although the interface bonding has been improved, the effect is not very significant. The tire cord processing process, During the rubber dipping process, tire vulcanization process and tire driving, repeated stretching and compression fatigue will lead to peeling of the skin-core interface, which will reduce the fiber strength and prevent the original performance of the skin-core composite fiber from functioning normally.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
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Embodiment Construction

[0015] After solid-state polycondensation, the PET slices are island components, and the intrinsic viscosity IV measured in o-chlorophenol solution at 25°C is 1.2; after drying, the PA6 slices with a relative viscosity of 3.2 measured in concentrated sulfuric acid solution at 20°C are sea Component. PET slices are melted in the screw extruder at 320°C, PA6 slices are melted in the screw extruder at 285°C, and the melted melts enter the integral boss type sea-island composite spinning assembly in the composite spinning box respectively For spinning, the temperature of the box is 295°C, the temperature of the heater under the spinneret is 290°C, the as-spun silk is cooled by 20°C, 0.6m / sec side blowing, and drawn after oiling. The pre-drawing temperature is set to 80-95°C, the draft ratio is 1.01-1.10; the primary draft ratio is 3.2-4.0, and the temperature is 95-120°C; the secondary draft ratio is 1.2-2.0, and the temperature is 110-130°C; heat setting temperature 220-240°C, r...

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Abstract

This invention provides a production of island-type compound industrial silk. It uses polyester as island component, polyamide as sea component, the compositing proportion of the polyester and polyamide is their weight proportion, and the polyamide takes up 25-70% of the weight proportion. After the polyester with island component and polyamide with sea component are dried, then they are melted and extruded out from their own screw extrusion press, then they are computed by computing pump and then sent to the compound spinning machine, and then the integral boss type island compound spinning assembly spinning out the island type compound silk, and then the silk is made into island-type compound industrial silk through one step technology or two steps technology. The product in this invention has high intensity, better cohesive, and better fatigue resistance.

Description

technical field [0001] The invention relates to a production method of an island-in-the-sea composite industrial yarn, in particular to a production method of an island-in-the-sea composite industrial yarn for rubber skeleton materials. Background technique [0002] Polyamide industrial yarn has always been in the leading position in the world's rubber skeleton materials because of its high strength, good fatigue resistance and impact resistance, good heat dissipation, especially good adhesion with rubber and other excellent properties. However, polyamide industrial yarn also has disadvantages such as low modulus and dynamic modulus of elasticity, large "flat spot effect", and poor dimensional stability. [0003] Polyester industrial yarn represented by polyethylene terephthalate has the advantages of high strength and high modulus, good dimensional stability, small "flat spot effect", good moisture resistance, low cost and abundant raw materials, etc., and has been widely u...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D01D5/10D01F8/12D01F8/14
CPCD01F8/12D01F8/14
Inventor 侯庆华葛骏敏
Owner SINOSELEN HI TECH
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