Fibers and Nonwoven Materials Prepared Therefrom
US-2016076171-A1 · Mar 17, 2016 · US
Continuous-filament spunbond
US11788208B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11788208-B2 |
| Application number | US-201716084048-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 17, 2017 |
| Priority date | May 18, 2016 |
| Publication date | Oct 17, 2023 |
| Grant date | Oct 17, 2023 |
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- Title
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- Abstract
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- Assignees and inventors
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Abstract
Official abstract text for this publication.
The invention relates to a spunbonded fabric of endless filaments made of thermoplastic plastic, wherein the endless filaments are designed as multi-component filaments having a core/sheath configuration. The filaments contain at least one lubricant, the lubricant being present exclusively or at least to 90 wt. % in the core component. The mass ratio between the core component and the sheath component is 65:35 to 80:20. The proportion of the lubricant is 250 to 5500 ppm with respect to the total filament.
First claim
Opening claim text (preview).
The invention claimed is: 1. A nonwoven spunbonded of filaments, wherein the filaments are of continuous, thermoplastic multicomponent and spunbond construction having a core/sheath configuration, the filaments contain at least one lubricant, the lubricant is present in the core exclusively or in a quantity of at least 98 wt % of lubricant in the filament, a mass ratio between the core and the sheath being is from 50:50 to 75:25, the core consists essentially of homopolypropylene, the sheath consists essentially of a polypropylene copolymer with a molar mass distribution of 3.5 to 5, or a mixture of homopolypropylene and a polypropylene copolymer with a molar mass distribution of 3.5 to 5, and the proportion of the lubricant with respect to the overall filament corresponds to 250 to 5500 ppm. 2. The spunbonded nonwoven defined in claim 1 , wherein the mass ratio between the core and sheath is 67:33 to 73:27. 3. The spunbonded nonwoven according to claim 1 , wherein the lubricant comprises fatty acid ester, fatty acid alcohol, or fatty acid amide. 4. The spunbonded nonwoven according to claim 1 , wherein the lubricant is at least one stearate or at least one erucic acid amide or at least one oleamide.
Assignees
Inventors
Classifications
- D01D5/0985Primary
by means of a flowing gas (e.g. melt-blowing) · CPC title
Other agents for modifying properties · CPC title
with at least one polyolefin as constituent · CPC title
- D04H3/147Primary
Composite yarns or filaments · CPC title
with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion · CPC title
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- What does patent US11788208B2 cover?
- The invention relates to a spunbonded fabric of endless filaments made of thermoplastic plastic, wherein the endless filaments are designed as multi-component filaments having a core/sheath configuration. The filaments contain at least one lubricant, the lubricant being present exclusively or at least to 90 wt. % in the core component. The mass ratio between the core component and the sheath co…
- Who is the assignee on this patent?
- Reifenhaeuser Masch, Fibertex Personal Care As
- What technology area does this patent fall under?
- Primary CPC classification D01D5/0985. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Oct 17 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).