Method and apparatus for meltblowing, forming and laying up finite fibers into fibrous nonwovens

A non-woven fabric and fiber-forming technology, which is applied in the direction of melt spinning, textiles and papermaking, non-woven fabrics, etc.

Active Publication Date: 2016-11-02
OERLIKON TEXTILE GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this fiber deposition is that a part of the air flow acts directly on the composite segment which is deposited in the forming gap

Method used

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  • Method and apparatus for meltblowing, forming and laying up finite fibers into fibrous nonwovens
  • Method and apparatus for meltblowing, forming and laying up finite fibers into fibrous nonwovens
  • Method and apparatus for meltblowing, forming and laying up finite fibers into fibrous nonwovens

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Experimental program
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Embodiment Construction

[0022] exist figure 1 A first embodiment of the device according to the invention is schematically shown in cross-section in . This embodiment has a meltblowing nozzle 1 and a profile element 2 held below the meltblowing nozzle 1 . The profiled element 2 is formed by two counter-driven rollers 3 between which a profiled gap 6 is formed. The forming gap 6 extends in the vertical direction between the rollers 2.1 and 2.2, wherein the rollers 2.1 and 2.2 are symmetrical with respect to the longitudinal axis of the meltblowing nozzle 1 . The drives of the rollers 2.1 and 2.2 are not shown in detail here and can be realized by drive groups or separate drives. The drums 2.1 and 2.2 each have air-permeable drum walls 3 which rotate opposite each other in the direction of fiber blowing at a circumferential speed given by the drives of the drums 2.1 and 2.2.

[0023] The melt blowing nozzle 1 is arranged on a frame 13 in a height-adjustable manner above the drums 2.1 and 2.2. In th...

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Abstract

The present invention relates to a method and apparatus for meltblowing, forming and laying up finite fibers into fibrous nonwovens. In this case, the fiber flow generated by the melt blowing nozzle and the hot gas flow is blown into the forming gap of the forming element, wherein the fibers are combined within the forming gap to form a fiber composite. In order to influence the filling and shaping of the fibers inside the forming gap directly below the meltblowing nozzle, according to the invention the fibers are guided freely essentially vertically on an adjustable blowing path from the meltblowing nozzle to the forming gap, wherein The adjustment range of the blowing path is 100mm to 2000mm. This advantageously enables not only very fine fibers but also coarse fibers to be formed into a loose fiber composite.

Description

technical field [0001] The present invention relates to a method for melt-blowing, forming and laying of finite fibers into fibrous non-woven fabrics. The fiber composite formed by the slot is discharged on the outlet side of the forming slot. The invention also relates to a device for meltblowing, forming and laying finite fibers into a fibrous nonwoven, which has a meltblowing nozzle for generating a flow of fibers and at least one forming element for forming a forming gap, the The fibers are formed into a fiber composite in the forming gap and discharged. Background technique [0002] In the prior art, two different methods and devices are known in principle for the production of fibrous nonwovens from synthetic fibers. The two methods differ not only in the production of the fibers but also in the laying of the fibers to form the fibrous nonwoven. [0003] In a variant known in the professional world as the melt-blowing process, the freshly extruded fibers with the me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/56D04H1/70D01D5/098
CPCD04H1/56D01D5/0985D04H1/70
Inventor G·许特B·波特拉茨J·纽曼-罗德基希A·巴伯
Owner OERLIKON TEXTILE GMBH & CO KG
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