Bicomponent fibers, textile sheets and use thereof

Abstract

Disclosed are bicomponent fibers with aliphatic polyester forming a first component and a polyolefin forming a second component wherein the polyolefin contains an adjuvant improving the biodegradability of said polyolefin. Textile sheets comprising these bicomponent fibers are comparable in their mechanical properties to polyolefin based textile sheets while these are more efficiently decomposed by the action of microorganisms as polyolefin based textile sheets.

Description

technical field [0001] The present application relates to core-shell bicomponent fibers with improved biodegradability. Textile sheet shells comprising these fibers are used in different fields of application, such as textile applications or industrial applications. Preferably, the textile sheet is prepared in the form of a nonwoven, which can be used in personal care products. Background technique [0002] Biodegradable fibers and textile sheets made therefrom are known. One way to improve biodegradability is to use polymers known to exhibit improved biodegradability compared to eg polyolefins. Another approach to improving the biodegradation of polymers is to add agents that improve the rate of biodegradation of the polymer after use. [0003] JP-A-2007-197857 and US-A-6197237 disclose a spunbond comprising a mixture of polyolefin and polylactic acid or polyolefin, an aliphatic polyester polymer and a phase for the above two polymers. fibers in a mixture of compatibili...

AI Technical Summary

Problems solved by technology

However, certain disadvantages can also be seen: PLA fibers have a narrow bonding temperature window

Unfortunately, nonwovens made from bicomponent filaments of biodegradable plastic in the core and polyolefin in some aspects of the shell have the above-mentioned advantages, but also lose their biodegradability or compostability.

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