Polyester binder fibers
US-10253434-B2 · Apr 9, 2019 · US
Polyester binder fiber
US11255032B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11255032-B2 |
| Application number | US-201916449889-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 24, 2019 |
| Priority date | Dec 26, 2016 |
| Publication date | Feb 22, 2022 |
| Grant date | Feb 22, 2022 |
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- Title
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Abstract
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The problem to be solved by the present invention is to provide a polyester binder fiber having a low crystallization temperature and exhibiting improved adhesiveness and a fiber structure including the polyester binder fiber. The polyester binder fiber according to the present invention includes a polyester polymer and an amorphous polyether imide polymer in a proportion of 0.1 to 5.0 mass % (based on the mass of the polyester polymer), and the polyester binder fiber has a crystallization temperature measured by differential calorimetry in a range of 100° C. or higher and 250° C. or lower.
First claim
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What is claimed is: 1. A polyester binder fiber, comprising: a polyester polymer and an amorphous polyether imide polymer in a proportion of 0.1 to 5.0 mass % based on the mass of the polyester polymer, the polyester binder fiber having a crystallization temperature measured by differential calorimetry in a range of 100° C. or higher and 250° C. or lower, wherein the polyester binder fiber has a single fiber fineness of 0.01 to 10 dtex. 2. The polyester binder fiber as claimed in claim 1 , wherein the polyester binder fiber is an undrawn fiber. 3. The polyester binder fiber as claimed in claim 1 , wherein the polyester polymer comprises a polyethylene terephthalate. 4. The polyester binder fiber as claimed in claim 1 , wherein the polyester polymer has an intrinsic viscosity of 0.4 to 1.1 dL/g. 5. The polyester binder fiber as claimed in claim 1 , wherein the polyester binder fiber has a single fiber fineness of 0.01 to 5.0 dtex. 6. The polyester binder fiber as claimed in claim 1 , wherein the polyester binder fiber has a circular cross-sectional shape, a modified cross-sectional shape, a cross-sectional shape of hollow fiber, or a cross-sectional shape of composite fiber. 7. The polyester binder fiber as claimed in claim 1 , wherein the polyester binder fiber has a fiber length of 0.5 to 50 mm. 8. A fiber structure, comprising at least: the polyester binder fibers as recited in claim 1 , and polyester subject fibers without any crystallization temperature, the polyester subject fibers being bonded via the polyester binder fibers. 9. The fiber structure as claimed in claim 8 , wherein the fiber structure is a nonwoven fabric. 10. The fiber structure as claimed in claim 9 , wherein the nonwoven fabric is a wetlaid nonwoven fabric. 11. The fiber structure as claimed in claim 10 , wherein the wetlaid nonwoven fabric is a paper.
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Frequently asked questions
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- What does patent US11255032B2 cover?
- The problem to be solved by the present invention is to provide a polyester binder fiber having a low crystallization temperature and exhibiting improved adhesiveness and a fiber structure including the polyester binder fiber. The polyester binder fiber according to the present invention includes a polyester polymer and an amorphous polyether imide polymer in a proportion of 0.1 to 5.0 mass % (…
- Who is the assignee on this patent?
- Kuraray Co
- What technology area does this patent fall under?
- Primary CPC classification D04H1/55. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Feb 22 2022 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 10 related publications on this page (citations in our corpus or others sharing the same primary CPC).