Method and apparatus for producing nonwoven fabrics

A technology of non-woven fabrics and equipment, applied in the field of non-woven fabrics, can solve problems such as water accumulation, non-woven fabric volume reduction, interference, etc., and achieve the effects of reducing energy consumption, avoiding damage, and high production capacity

Active Publication Date: 2018-09-25
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the relatively high pressing pressure of the shoe press, disturbing water accumulations can occur before the press nip o

Method used

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  • Method and apparatus for producing nonwoven fabrics

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Experimental program
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Effect test

Embodiment Construction

[0077] figure 1 The purely schematically shown device 60 for producing a nonwoven comprises a former for forming the nonwoven, designated only by reference numeral 28, and for supplying the nonwoven formed from the formed nonwoven. The web 52 is further dewatered in the belt press section 34 .

[0078] The nonwoven is formed in the former 28 according to a nonwoven forming method or any combination of different such methods. In this case, it can be formed in particular by dry methods, wet methods and / or extrusion methods.

[0079] The formed nonwoven is consolidated, for example, by means of at least one (in the present exemplary embodiment, for example two) reinforcement devices 18 , 20 which preferably operate according to the hydroentanglement method and here comprise, for example, each two nozzles. As can be seen below, hydroentanglement is not mandatory in every case. The consolidated nonwoven web 52 is then further dewatered.

[0080] The belt press section 34 compris

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Abstract

In a method for producing a nonwoven material, a nonwoven is formed in a former and the resulting nonwoven material web is subsequently further dewatered. In this case, the further dewatering comprises dewatering by means of a belt press which comprises a roller about which at least one inner belt, preferably configured as an endless belt, that rests against the roller, and an outer pressing belt, preferably configured as an endless belt, are wrapped in order to form an extended press nip, wherein at least in the region of the roller the nonwoven material web is arranged between the inner belt and the outer pressing belt and in order to generate a mechanical pressure on the nonwoven material web located between the two belts, the pressing belt is pressed with a belt tension of at least 15 kN/m against the roller, resulting in the nonwoven material web and the inner belt being pressed against the roller, and wherein the nonwoven is formed in the former on a circulating transfer belt and the resulting nonwoven material web is guided by means of this transfer belt at least as far as the belt press and through the extended press nip thereof. An apparatus suitable for carrying out the method is also disclosed.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Claims

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Application Information

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Owner VOITH PATENT GMBH
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