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Ribbon yarn

a ribbon and yarn technology, applied in the direction of vehicular safety arrangements, pedestrian/occupant safety arrangements, textile treatment by spraying/projecting, etc., can solve the problems of leaving a lot to be desired, and achieve the effect of adhesion and resistance to burning

Inactive Publication Date: 2021-01-07
PHP FIBERS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This method enhances the distribution and adhesion of fixing agents, resulting in improved performance and reduced material usage, including weight reduction and enhanced resistance to heat and gas-tightness, potentially eliminating the need for additional coatings.

Problems solved by technology

The methods and the ribbon yarns of the prior art obtained from said methods still have, however, the disadvantage that the adhesion of the filaments to the “activatable” additives or coatings in part leaves a lot to be desired, in particular when it comes to the use of filaments made of polymers that do not have a good adhesion per se, such as polyester.

Method used

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Examples

Experimental program
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Embodiment Construction

[0028]The production of the ribbon yarns and the use thereof for e.g. the production of airbag fabrics or tire reinforcements, as well as preferred embodiments, will now be explained in more detail.

[0029]A multifilament yarn is provided, for example, spun from polyamide 6,6 with a linear density of 1880 dtex and 280 individual filaments. The multifilament yarn is preferably provided in an unmingled state, i.e. no intermingling jets or other types of intermingling of the yarn are used after the spinning process.

[0030]The yarn can then be subjected to a washing process. The washing is recommended, for example, if the fixing step should take place using a reactive silicone, for example, a polysiloxane. The background is that the finishing or sizing agents negatively affect (increase) the burning behavior during later applications, for example as an airbag.

[0031]If, for example, a copolyamide is used as a binder or fixing agent, then the later burning behavior is surprisingly not increa...

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Abstract

Described is a ribbon yarn made of multifilament yarns based on polyamide and / or polyester, wherein not more than 5 filaments overlie one another within the ribbon yarn, wherein the ribbon yarn is fixed by the formation of a matrix comprising one or more fixing agents, wherein the one or more fixing agents are selected from a group consisting of copolyamides, copolyesters, silicones, and mixtures or blends thereof.

Description

[0001]This is a Division of application Ser. No. 14 / 377,636 filed Aug. 8, 2014, which in turn is a National Stage Application of PCT Application No. PCT / EP2013 / 052596 filed Feb. 8, 2013, which claims the benefit of European Patent Application No. 12154856.4 filed Feb. 10, 2012. The disclosure of the prior applications is hereby incorporated by reference herein in its entirety.BACKGROUND[0002]The present invention relates to a method for producing a ribbon yarn and to the use of such a yarn, e.g. for producing airbag fabrics or tire reinforcements.[0003]Ribbon yarns for the production of airbags are known for example from EP-A-2 374 923. In this document, a plurality of yarns made of individual fibers are treated with an “activatable” additive or a coating and subsequently subjected to an activation step so that the yarns assume a flat configuration.[0004]Airbags are typically constructed as woven fabrics and are initially folded and / or rolled into a narrow package and inserted into ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): D02J1/18D04H3/009B65H51/005D04H3/12D04H3/011D04H3/04D01G9/00D02G3/40D02G3/44D02G3/48D06B1/02
CPCD02J1/18D04H3/009B65H51/005D04H3/12D04H3/011D04H3/04B60R2021/23514D02G3/402D02G3/446D02G3/48D06B1/02Y10T428/2973Y10T428/249921D01G9/00B65H2701/313D02G3/40D10B2331/02D10B2331/04D10B2505/02D10B2505/124
Inventor BONGARTZ, MARIANNEFLACHENECKER, ANDREASVIETH, CHRISTIANCZIOLLEK, JOACHIMTHIENEL, ALEXANDER
Owner PHP FIBERS GMBH