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What is the testing method for electrostatic properties of polyester fibers
2026-09-14The electrostatic performance testing of polyester fibers is carried out in accordance with the GB/T 12703 series "Test Methods for Electrostatic Properties of Textiles", GB/T 33728 "Evaluation of Electrostatic Properties of Textiles - Electrostatic Attenuation Method", and GB/T 14342 "Test Method for Specific Resistance of Synthetic Short Fibers". It can be carried out for polyester short fibers,
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What is the essential difference between composite spun fibers and ordinary blended fibers
2026-09-08Core essence: The binding positions of the two components are different Composite spun fibers: The same single filament contains two types of polymers inside; Ordinary blended fiber: Two completely independent single fibers are physically mixed together, with each fiber still being a single component. 1. Composite spun fibers (two-component composite spun) By using a composit
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What is the dyeing performance of polylactic acid fiber
2026-09-01PLA belongs to aliphatic polyester fibers, with a structure similar to polyester (PET), but with ester bonds in the molecular chain, lower crystallinity, and glass transition temperature Tg, and can only be dyed with dispersed dyes; The dyeing temperature window is narrow, and it is sensitive to alkali and high temperature. The dyeing and color fastness of dark colors are weaker than that of ordin
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What is the production process of composite spun fibers
2026-08-24Composite spun fibers are two different polymers that are independently processed and merged in a composite spinneret assembly. They are extruded from the same spinneret hole to form a single two-component fiber, which is divided into raw material pretreatment → melt extrusion → composite spinning forming → cooling and oiling → stretching → post-processing (curling, heat setting, cutting) → finish
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What are the functional modifications of polyester fibers
2026-08-17PET, the basic raw material of polyester, has a single performance. Through two major routes of modification in the spinning stage and post finishing modification, the fiber structure is changed and functional additives are added to achieve various special properties. The industry collectively refers to functional modified polyester fibers. It is divided into original solution modification (pre s
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What are the key differences in dyeing and finishing processes between polylactic acid fiber and pol
2026-08-10PLA belongs to biobased polyester with poor thermal stability and is easily hydrolyzed under alkaline and humid conditions; Polyester is a petroleum based polyester with excellent temperature and alkali resistance. Although both use dispersed dyes, there is a significant difference in the overall process window.
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What are the downstream application areas of composite spun fibers
2026-08-03Composite fibers are divided into four mainstream categories: skin core type, parallel type, orange petal split type, and island type. Different structures correspond to differentiated downstream. Below is a breakdown by industry:
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Which link is more important in the production process of polyester fiber
2026-07-281、 Step 1: Esterification&Condensation (Aggregation Section, Slice Production) 1. Importance: Source foundation, innate attributes PTA undergoes esterification with ethylene glycol, followed by condensation to produce PET polymer. The core indicator is the intrinsic viscosity IV value. The IV level directly determines the fiber strength:
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How to improve the interfacial bonding strength of composite spun fibers
2026-07-22Composite spun fibers (skin core, sea island, orange petal fragments, parallel) exhibit interface delamination, excessive fiber opening, sharp drop in strength, thermal processing delamination, and filter material shedding, with the core root cause being weak interfacial bonding between the two phases.
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What are the precautions for polylactic acid fiber in spinning production process
2026-07-13Characteristics of PLA fiber: smooth surface, low friction coefficient, poor adhesion, poor heat resistance, easy creep under pressure and heat, degradation under high temperature and strong alkali, high fiber brittleness. Spinning focuses on temperature and humidity control, process parameters, equipment selection, production operation, and semi-finished product protection and control.
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