Device for producing spunbonds from endless filaments

A filament and equipment technology, which can be used in felting equipment, filament/thread forming, textile and paper making, etc., and can solve problems such as unsatisfactory filament deposition quality

Active Publication Date: 2018-10-23
REIFENHAEUSER GMBH& CO KG MASCHFAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many of the devices of this type known from practice have the disadvantage that at high wire speeds and high throughputs or production rates the quality of the wire deposition is unsatisfactory

Method used

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  • Device for producing spunbonds from endless filaments
  • Device for producing spunbonds from endless filaments

Examples

Experimental program
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Embodiment Construction

[0027] The figure shows an apparatus according to the invention for producing a spunbond fabric of filaments 1 , in particular made of filaments 1 of thermoplastic material. The apparatus comprises a spinneret 2 for spinning a filament 1 and a cooling device 3 for cooling the filament. According to a particularly preferred embodiment of the invention, the monomer extraction device 4 is arranged between the spinneret 2 and the cooling device 3 . By means of such a monomer extraction device 4 disturbing gases generated during the spinning process can be removed from the device. These may be, for example, monomers, oligomers or decomposition products and the like. A gap 5 is formed between the monomer extraction device 4 and the cooling device 3, which generally extends around the entire filament forming space or filament flow space. According to a very preferred embodiment and in the exemplary embodiment according to the figure (see especially figure 1 ), at least one deforma...

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PUM

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Abstract

The invention relates to a device for producing spunbonds from endless filaments, comprising at least one spinneret, at least one cooling device, at least one stretching device and comprising at leastone depositing device for depositing the filaments. At least one diffusor is arranged between the stretching device and the depositing device so that filaments and primary air from the stretching device enter into the diffusor. In the region of the at least one diffusor at least two secondary air inlet gaps arranged on opposite sides of the diffusor are provided. At least one secondary air inletgap is formed with the proviso that the secondary air flows in at an angle alpha with respect to the filament flow direction FS, wherein the inflow angle alpha is less than 100 degrees. An extractiondevice for extracting air through the depositing device. An extraction region arranged underneath the diffusor outlet has a width b in the machine direction which is greater than the width B of the diffusor outlet.

Description

technical field [0001] The invention relates to an apparatus for producing spunbond fabrics from filaments, especially filaments of thermoplastic material, comprising at least one spinneret for spinning the filaments, at least one cooling device for cooling the filaments , at least one stretching device for stretching the filaments, and comprising at least one deposition device for depositing the filaments to form a nonwoven web. Filament within the scope of the present invention means a wire of almost endless length. These filaments differ in this respect from staple fibers, which have a much shorter length, eg 10 to 60 mm. Background technique [0002] Devices of the initially mentioned type are basically known from practice in various embodiments. These machines are also known as spunbond machines. Many of the devices of this type known from practice have the disadvantage that, at high wire speeds and high throughputs or production rates, the quality of the wire deposi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/54D04H1/56
CPCD04H3/033D04H1/54D04H1/56D04H3/005D04H3/02D01D5/092D01D5/0985D01D7/00D04H3/16D04H17/00D04H3/10D02J13/00D02J1/22D01D4/02D01D5/098
Inventor D·弗赖M·诺伊恩霍费尔S·佐默
Owner REIFENHAEUSER GMBH& CO KG MASCHFAB
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