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Method and device for producing nonwoven web made of fibers

A non-woven fabric and fiber technology, applied in felting equipment, non-woven fabrics, fiber treatment, etc., can solve problems such as the solution is susceptible to interference, cannot produce non-woven fabrics, and cannot be calendered

Active Publication Date: 2020-04-07
REIFENHAEUSER GMBH& CO KG MASCHFAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, here too, the operation must be interrupted, so that there are downtimes during which calendering and therefore the specified nonwoven production cannot take place
Furthermore, the proposed solution is susceptible to disturbances and has the constraint

Method used

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  • Method and device for producing nonwoven web made of fibers

Examples

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Comparison scheme
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Embodiment Construction

[0035] in the attached figure 1 A device for producing a spunbond nonwoven web 1 made of continuous filaments 2, preferably and in this embodiment filaments made of thermoplastics, is shown in 2. Preferably and in this exemplary embodiment, the filaments 2 are spun by means of a spinning device or spinneret 3 and then cooled in a cooling device 4 . A stretching device 5 for stretching the filament 2 is connected to the cooling device 4 in the flow direction of the filament 2 . Preferably and in this embodiment, the stretching device 5 has a central channel 6 constricting in the direction of flow of the filament 2 and a stretching channel 7 connected thereto. Preferably and in this exemplary embodiment, the assembly consisting of the cooling device 4 and the stretching device 5 is configured as a closed system. In this closed system, no further air supply takes place than the supply of cooling air or process air in the cooling device 4 . According to a preferred embodiment ...

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Abstract

The invention relates to a method for producing a nonwoven web made of fibers, in which the fibers are spun out and cooled and laid on a laying belt as a fiber laying layer. According to the invention, at least one pre-consolidation device for pre-consolidating a nonwoven web is provided, and at least one first calendering roller for consolidating the nonwoven web, which is connected downstream ofthe pre-consolidation device, is provided. The first calendering roller is replaced with a second calendering roller in a continuous process operation. Here, the first calendering roller is removed from the nonwoven web and the pre-consolidation of the nonwoven web is reinforced during the replacement of the calendering roller. The pre-consolidation of the nonwoven web is again reduced after introduction of the second calendering roller.

Description

technical field [0001] The invention relates to a method for producing a nonwoven web made of fibers, in particular plastic fibers, wherein the fibers are spun out and cooled and laid on as a fiber lay-up or as a nonwoven web On the laying device, in particular on the laying belt or on the laying screen belt, wherein at least one pre-consolidating device for pre-consolidating the nonwoven web is provided and at least one pre-consolidating device connected downstream of the pre-consolidating device is provided A first calender roll for consolidating the web of nonwoven fabric. The invention also relates to an apparatus for producing a nonwoven web made of fibres. Background technique [0002] Methods and devices of the above-mentioned type are known in practice in various embodiments. During calendering of the nonwoven web by means of calender rolls, it may be necessary to replace the calender rolls in successive runs. This is the case, for example, when the properties of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/005D04H3/10D04H3/12D04H3/16D01D5/088D01D5/16
CPCD04H3/10D04H3/08D04H17/10D04H3/005D04H3/12D04H3/16D01D5/088D01D5/16D04H3/14D04H1/488D04H1/593D04H17/12D04H1/44D04H1/559D04H1/64D04H1/724D21G1/00D01D5/08D01D5/0985D01H3/00D01H3/16
Inventor D·弗赖H-G·赫斯M·马斯M·诺伊恩霍费尔M·尼奇克C·诺亚克H·科普
Owner REIFENHAEUSER GMBH& CO KG MASCHFAB
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