Bicomponent fibers, textile sheets and use thereof

A bicomponent fiber and sheet technology, applied in textile, textile and papermaking, fiber chemical characteristics, etc., can solve the problems of narrow bonding temperature window of PLA fiber, loss of biodegradability or compostability, etc.

Inactive Publication Date: 2011-01-19
博爱科罗温有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Bicomponent fibers, textile sheets and use thereof
  • Bicomponent fibers, textile sheets and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] By melt spinning bicomponent fibers with a core-shell structure and forming a basis weight of 15 g / m in a pilot plant 2 spunbonded materials to produce nonwovens. The weight of the core is 75% and that of the shell is 25%. The core is made of PLA and the shell is made of polypropylene. The core contained 10% by weight calcium carbonate (Omyalene 102M), based on the weight of the core. The shell contained 3% by weight of biodegradation enhancing adjuvant (Addiflex HE), based on the weight of the shell.

Embodiment 2

[0073] According to the operation of embodiment 1, but production basis weight is 26g / m 2 of spunbond.

[0074] Details of the spunbonds produced in Comparative Examples 1-4 and Examples 1-2 are summarized in the table below.

[0075] Example

nuclear material

nuclear additive 1) (%b.wt.)

shell material

shell additive 2) (%b.wt.)

Basis weight g / m 2

C1

PLA

-

PP

-

15

C2

PLA

-

PP

-

26

C3

PLA

Calcium Carbonate(10)

PP

-

15

C4

PLA

Calcium Carbonate(10)

PP

-

26

1

PLA

Calcium Carbonate(10)

PP

Degradation Accelerator (3)

15

2

PLA

Calcium Carbonate(10)

PP

Degradation Accelerator (3)

26

[0076] 1) Omyalene 102M (Omya)

[0077] 2) Addiflex HE(Add-X)

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01F1/04D01F1/06D04H3/011D04H3/147D04H3/153
CPCD01F8/06D01F1/10D01F8/14Y10T428/2929Y10T442/681Y10T442/697
Inventor S·O·切斯特S·博尔内曼
Owner 博爱科罗温有限公司
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