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Method for producing a structured microfilament nonwoven

A non-woven fabric and structured technology, applied in the field of textiles, can solve the problems of non-woven fabric structured patterns not very durable, the influence of multiple washing and dyeing processes, loose structure, etc., to achieve good thermophysiological comfort, good continuous durability Effects on washability, skin comfort and appearance

Inactive Publication Date: 2018-03-27
CARL FREUDENBERG KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of using short fibers is that the high degree of mobility leads to loosening of the structure under the mechanical action of the washing process
[0009] The disadvantage of this method is that the structured pattern of the nonwoven is not very durable and is affected especially by treatments that impose mechanical stress, such as multiple washings or dyeing processes
[0011] In the nonwovens described in this publication, the structured pattern is also not very durable with respect to the treatment of applied mechanical stress

Method used

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  • Method for producing a structured microfilament nonwoven

Examples

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Embodiment Construction

[0088] 70% PET and 30% PA6 are melted with the aid of 2 extruders, they are converged into a spinning nozzle for bicomponent filaments and extruded together in the form of continuous PIE16 filaments at approx. 3500m / min speed stretched to about 2.4 dtex in the unsplit state, and laid on the laying belt to 37g / m 2 Rosa. The yarn is stabilized, and if necessary heated, by an air flow which passes through the yarn from above and penetrates the laying belt and which is sucked away from below. With only a few centimeters of free hanging, the rabbet was guided into a calender with a line pressure of 33 daN / cm and a temperature of both rolls of 150°C. The thermally preconsolidated nonwoven is rolled up so that it can be manipulated (rolled and unrolled) and supplied to the rest of the waterjet preconsolidation device.

[0089] In the case of water jet pre-consolidation, which is guided by means of four rollers, the following steps are interrelated: splitting of the pre-consolidati...

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Abstract

Method for producing a structured microfilament nonwoven, in which microfilaments and / or composite filaments that are able to be split into microfilaments are spun to form at least one fibre layer, drafted and laid to form a nonwoven; the nonwoven is thermally preconsolidated; the thermally preconsolidated nonwoven is treated with a pressurized medium in order to at least partially break up the thermal preconsolidation; the nonwoven resting on a structuring surface is subjected again to a pressurized medium, whereby a structured microfilament nonwoven is obtained.

Description

technical field [0001] The present invention relates to the field of textiles and their applications. [0002] In particular, the invention relates to a method for producing a structured microfilament nonwoven, as well as the microfilament nonwoven produced by this method and its use. [0003] Non-woven fabrics are textile fabrics composed of individual fibers It can also be obtained with various production methods, such as carding (dry-laid), melt-spinning (spunbond), melt-blowing or also aerodynamic nonwoven laying (air-laying). [0004] In the case of melt spinning, the polymerized mass is heated in an extruder and extruded by means of a spinning pump through a spinning nozzle. The polymer exits the nozzle plate as threads (continuous filaments) in molten form, is cooled by the gas flow and stretched from the melt. The air flow conveys the continuous filaments onto a conveyor belt formed as a screen. By suction under the sieve belt, the thread can be set to form a fibe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/495D04H3/11D04H3/016D04H3/018
CPCD04H1/495D04H3/016D04H3/018D04H3/11D04H3/011D10B2331/02D10B2331/04D10B2403/01D10B2503/06D10B2505/08
Inventor R·格罗滕B·贝克U·让A·埃博德卡戴J·F·科豪特
Owner CARL FREUDENBERG KG
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