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US-2020224429-A1 · Jul 16, 2020 · US
A 3d loop article and method for preparing the same
US2025050568A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025050568-A1 |
| Application number | US-202218721693-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 9, 2022 |
| Priority date | Feb 9, 2022 |
| Publication date | Feb 13, 2025 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
A 3D loop article made of a material comprising polyethylene, ethylene/α-olefin copolymer, or a blend of polyethylene and ethylene/α-olefin copolymer, wherein the material has a low-perfection crystal melting enthalpy, calculated within a temperature range of 15-80° C., of less than or equal to 30 J/g.
First claim
Opening claim text (preview).
1 . A 3D loop article made of a material comprising polyethylene, ethylene/α-olefin copolymer, or a blend of polyethylene and ethylene/α-olefin copolymer, wherein the material has a low-perfection crystal melting enthalpy, calculated within a temperature range of 15-80° C., of less than or equal to 30 J/g. 2 . The 3D loop article of claim 1 , wherein the ethylene/α-olefin is selected from ethylene/α-olefin random copolymer, ethylene/α-olefin multi-block interpolymer, or a mixture thereof. 3 . The 3D loop article of claim 1 , wherein the material has a low-perfection crystal melting enthalpy, calculated within a temperature range of 15-80° C., of less than or equal to 29 J/g. 4 . The 3D loop article of claim 1 , wherein the material has a low-perfection crystal melting enthalpy, calculated within a temperature range of 15-80° C., of less than or equal to 25 J/g. 5 . The 3D loop article of claim 1 , wherein the material has a MI from about 3 g/10 min to about 20 g/10 min. 6 . The 3D loop article of claim 1 , wherein the material has a density of between about 0.880 g/cm 3 and about 0.920 g/cm 3 . 7 . The 3D loop article of claim 1 , wherein the 3D loop article has a compression residual strain at 70° C. of no greater than 25%. 8 . The 3D loop article of claim 1 , wherein the 3D loop article has a compression residual strain at 70° C. of no greater than 20%. 9 . The 3D loop article of claim 1 , wherein the material has a low-perfection crystal melting enthalpy, calculated within a temperature range of 15-80° C., of less than or equal to 21 J/g. 10 . The 3D loop article of claim 1 , wherein the 3D loop article are cushions for seats, mattress, or pillows. 11 . A method of producing the 3D loop article of claim 1 , comprising: extruding the material comprising polyethylene, ethylene/α-olefin copolymer, or a blend of polyethylene and ethylene/α-olefin copolymer; and performing a heat treatment at 70 to 90° C. for 0.5 hours to 5 days; wherein the material after heat treatment has a low-perfection crystal melting enthalpy, calculated within a temperature range of 15-80° C., of less than or equal to 30 J/g. 12 . A 3D loop article made by the process of claim 11 .
Assignees
Inventors
Classifications
Upholstery or cushions, e.g. vehicle upholstery or interior padding {(mattresses, cushions B29L2031/751)} · CPC title
Density · CPC title
having particular thermal properties · CPC title
PE, i.e. polyethylene · CPC title
Heating, e.g. for cross linking · CPC title
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Frequently asked questions
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- What does patent US2025050568A1 cover?
- A 3D loop article made of a material comprising polyethylene, ethylene/α-olefin copolymer, or a blend of polyethylene and ethylene/α-olefin copolymer, wherein the material has a low-perfection crystal melting enthalpy, calculated within a temperature range of 15-80° C., of less than or equal to 30 J/g.
- Who is the assignee on this patent?
- Dow Global Technologies Llc
- What technology area does this patent fall under?
- Primary CPC classification D04H3/07. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Thu Feb 13 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).