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Method for producing coloured hollow flame-retardant polyester staple fibers

A technology for flame-retardant polyester and its production method, which is applied in the fields of polyester staple fiber, polyester staple fiber and its production, can solve problems such as abnormal product quality or related functions, and rising production costs, and achieve reduction in the amount of color masterbatch, The effect of improving product quality and increasing the scope of use

Inactive Publication Date: 2009-04-29
周峰亭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is used to add flame-retardant functional masterbatches in the hollow colored spinning process, it may lead to increased production costs, abnormal product quality or related functions

Method used

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  • Method for producing coloured hollow flame-retardant polyester staple fibers

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Effect test

Embodiment Construction

[0013] Embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0014] Spinning on a German Barmag spinning machine, the pump supply rate is 745g / min, the coiling speed is 1050m / min, the spinning temperature is 290°C, and the spinneret adopts 960 holes. Then draw on the LHV3 combined drawing machine of Beijing Zhongli, the drawing ratio is 4 times, and the drawing temperature is 125°C. The color masterbatch and flame retardant masterbatch are melted and extruded by their respective small screws, and then injected into the melt static mixer at a ratio of 0.8% of the total melt mass, and fully mixed with the PET melt for spinning. The main production process The process is: drying→spinning→winding→forming→converging→drawing→crimping→cutting. The shape of the hole on the spinneret is as figure 1 As shown, a product with a specification of 1.67dtex×38mm is finally obtained, and the cross-section of the product is ...

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Abstract

The invention relates to a method for producing colored hollow flame retarding polyester short fibers, which is characterized in that uniquely-designed spinneret plates are used for production according to the chip spinning production process, and color master batches and flame retarding master batches are added into melt by a side pouring mode respectively; and the section of produced fiber is changed into a ring shape with gaps from the prior circular hole, and the number of the gaps is generally three, or four or more than four as required. Because the spinneret plates with non-conventional design are adopted, and the shape of the section of the fiber produced by using the spinneret plates is different from that of general colored hollow terylene short fibers. The difference greatly deepens the product colority so as to reduce the usage of the master batches, and is favorable for the melt of the flame retarding master batches and the chips, thereby reducing production cost to the maximum extent and improving the product quality. As the product has multiple functions or characteristics such as colorfulness, hollowness and flame retard, the application range is greatly widened, and the added value of the product is substantially improved.

Description

technical field [0001] The invention relates to a polyester staple fiber, in particular to a colored hollow polyester staple fiber with a flame-retardant function and a production method thereof, belonging to the technical field of chemical fiber production. Background technique [0002] Generally, the section of colored hollow polyester staple fiber is round or irregular, and its inner and outer edges are smooth and regular. This structural feature causes the fibers to form regular diffuse reflections under the action of light reflection, resulting in lighter or less bright colors of the fibers, especially for those fiber surfaces with a single color. In actual production, the method of increasing the amount of masterbatch has to be used to meet the chromaticity requirements, thereby increasing the production cost. [0003] In addition, due to the addition of flame retardants (phosphorus-based or halogen-based flame retardants) that affect the normal production of spinning...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/24D01D5/253D01F1/04D01F1/07
Inventor 周峰亭
Owner 周峰亭
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