Spinneret for spinning threads, spinning device for spinning threads and method for spinning threads

A spinning device and spinneret technology, applied in spinneret assemblies, stretch spinning, textiles, etc., can solve the problems of high energy consumption, increase process equipment consumption, etc., and achieve the effect of increasing throughput

Inactive Publication Date: 2013-03-06
吕德・格金
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This disadvantage can be at least partly eliminated by heating the air reaching the spinneret, but this requires higher energy con...

Method used

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  • Spinneret for spinning threads, spinning device for spinning threads and method for spinning threads
  • Spinneret for spinning threads, spinning device for spinning threads and method for spinning threads
  • Spinneret for spinning threads, spinning device for spinning threads and method for spinning threads

Examples

Experimental program
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Embodiment

[0041] exist figure 2 An arrangement of a plurality of spinnerets 1 in the form of spinning nozzles, using image 3 A configuration with three openings with a diameter of 0.25 mm. For each hole or hole, the throughput of polypropylene is 1.5g / min, and the melt flow index MFI (melt flow index, also known as MFR, melt flow rate) is 28 and 1,200, which are based on ISO 1133 Measured on a standardized device, expressing how many grams of heated thermoplastic polymer are extruded through a spinneret in 10 minutes under the action of a fixed force, here for polypropylene, at 230 ° C and 2.16 kg, the average filament diameter after splitting was obtained, measured in a microscope from 20 individual filaments: at 1.5 g / min and MFI 28, provided 1 capillary with a diameter of 0.25 mm, the average The filament diameter is 1.1 μm with a minimum diameter of 0.8 μm, and at MFI 1,200, the average filament diameter is 0.95 μm with a minimum diameter of 0.4 μm. In the case of three capilla...

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PUM

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Abstract

The invention relates to a spinneret for spinning threads from a spinning mass - in the form of a melt or solution of natural or synthetic origin - comprising a rotationally symmetrical spinneret inner part, which in the longitudinal direction thereof has a channel for feeding spinning mass to a spinneret tip part having at least one exit bore. The rotationally symmetrical spinneret inner part is surrounded at least partially by a rotationally symmetrical outer part, wherein in the longitudinal direction between the spinneret inner part and outer part an insulating chamber is formed, in which a gas, preferably air, is received in order to form an insulating gas layer. The invention further relates to a spinning device for spinning threads from a spinning mass, comprising a spinneret part and a gas nozzle part arranged at a distance from the spinneret part. A plurality of spinnerets according to the invention are inserted in the spinneret part and project from the spinneret part, facing the gas nozzle part, and the gas nozzle part comprises a plurality of gas nozzles associated with the spinnerets. The gas nozzles are designed as acceleration nozzles for a gas flow that is conducted through the respective gas nozzle and encompasses the monofilaments. Said spinnerets are used in a method for producing spunbonded materials or yarns from polymers of natural or synthetic origin, in order to build up said materials or yarns from extremely fine threads having an average thread diameter of less than 1 [mu]m. The threads from the individual spinnerets can also be collected using conventional winding mechanisms to form yarns on bobbins.

Description

technical field [0001] The invention relates to a spinneret for spinning yarn from a spinning stock, as stated in the preamble of the independent claim for the device, a spinning device with a plurality of spinnerets and a spinning device for spinning yarn The method, as described in the preamble of the independent method claim. Background technique [0002] Generally, spinning is carried out by longitudinally drawing the filament-forming substance from a spinneret, said longitudinal stretching being carried out mechanically by means such as a winder applying a force to the filament; or by an accompanying gas flow, mainly air Flow is performed aerodynamically, as in spunbond operations, which also includes meltblowing. Thereby, outside the spinneret holes, threads are obtained with a diameter smaller than that of the spinneret holes. [0003] The process differs from split spinning in which multiple filaments are obtained from one orifice by splicing or splitting the liqui...

Claims

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Application Information

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IPC IPC(8): D01D4/02D04H1/56
CPCD04H1/565D04H3/00D01D4/025D01D5/14Y10T442/681D01D4/02D01D5/00D04H1/56D01D4/027
Inventor 吕德·格金
Owner 吕德・格金
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