A kind of stretched sheath-core untwisted composite filament and its production method and application

Abstract

The invention relates to an elasticity-strengthening skin core untwisted compound filament, a production method thereof and an application thereof. The elasticity-strengthening skin core untwisted compound filament can be used for preparing a fiber nib, a water-absorbing rod and a filtering material. The elasticity-strengthening skin core untwisted compound filament belongs to the technical field of compound fibers. The elasticity-strengthening skin core untwisted compound filament is formed by a skin layer and a core layer; the skin layer is covered on the exterior of the core layer; dacron (PET) is taken as the core layer component; a modified low-melting-point dacron (PET) or polypropylene (PP) material is taken as the skin layer component; the melting point of the skin layer is 150-210 degrees; the melting point of the core layer is at 250-260 degrees; the matching amount of the skin layer component is 20-40% of the total amount; the matching amount of the core layer component is 80-60% of the total amount. According to the invention, the modified high-crystalline low-melting-point PET or PP material at 150-degree melting point is taken as a skin layer material of the fiber; the dacron (PET) is taken as the core layer material; in POY compound spinning production line, the low-melting-point skin core compound pre-stretching filament (POY) is spun and then is spun on a double twisting elasticity-strengthening device and is subjected to double twisting compound elasticity strengthening, so that an untwisted elasticity-strengthening compound filament is formed; warping plying is performed and the filament passes through a heating pipe for heating and curing into a bar.

Description

technical field [0001] The invention relates to a stretched sheath-core untwisted composite filament and its production method and application, which can be used to make fiber pens, water-absorbing rods and filter materials, and belongs to the technical field of composite fiber production. Background technique [0002] On the traditional fiber pens, water-absorbing rods, and filter materials, there are conventional untwisted polyester textured yarns, or untwisted polypropylene filaments, which form capillary water-absorbing rods after plying, dipping, heating, curing and drying, and then cut and polish If it is made into a pen tip, a water-absorbing rod, and a filter rod, the production process releases a very serious irritating odor, which causes great damage to people and the environment. Contents of the invention [0003] The object of the present invention is to provide a stretched sheath-core untwisted composite filament and its production method and application in vi...

AI Technical Summary

Problems solved by technology

[0002] On the traditional fiber pens, water-absorbing rods, and filter materials, there are conventional untwisted polyester textured yarns, or untwisted polypropylene filaments, which form capillary water-absorbing rods after plying, dipping, heating, curing and drying, and then cut and polish Made into nibs, absorbent sticks, and filter sticks, the production process releases a very serious irritating odor, which causes great damage to people and the environment

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