Extrusion with preferential bend axis
US-2018169376-A1 · Jun 21, 2018 · US
Co-extruded multilayer articles including continuous layer and discontinuous layer
US12304186B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12304186-B2 |
| Application number | US-202318170630-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 17, 2023 |
| Priority date | Mar 5, 2019 |
| Publication date | May 20, 2025 |
| Grant date | May 20, 2025 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
This disclosure describes co-extruded multilayer articles including at least one continuous layer and one discontinuous layer, as well as systems and techniques for the manufacture of co-extruded multilayer articles. For example, a co-extruded multilayer article is described that includes a body having a plurality of layers, where a first layer of the plurality of layers is formed from a first material and is continuous along a longitudinal axis of the body, and a second layer of the plurality of layers is formed from a second material and is discontinuously co-extruded along the longitudinal axis.
First claim
Opening claim text (preview).
What is claimed is: 1. A multilayer article, comprising: a substantially tubular body surrounding an interior region, the body comprising a plurality of layers; wherein a first layer of the plurality of layers is formed from a first material and is continuous along a longitudinal axis of the body, wherein the first layer comprises a first material defining a first interior surface concentric to the longitudinal axis and exposed to the interior region, and wherein a second layer of the plurality of layers is formed from a second material defining a second interior surface concentric to and circumferentially surrounding the longitudinal axis, is disposed along portions of the longitudinal axis, and is exposed to the interior region, wherein the body is substantially free of at least one of parting lines and gate marks. 2. The multilayer article of claim 1 , wherein the first material is different from the second material. 3. The multilayer article of claim 1 , wherein the second material comprises at least one of a conductive material, a semiconductive material, and a high-K material. 4. The multilayer article of claim 1 , wherein at least one of the first material and the second material comprises a generally uniaxially aligned polymer. 5. The multilayer article of claim 1 , wherein the multilayer article comprises a plurality of bodies, wherein the second layer is periodically discontinuous. 6. The multilayer article of claim 1 , further comprising a third layer comprising a third material. 7. The multilayer article of claim 6 , wherein the third material comprises one of a high-K material, a conductive material and a semiconductive material. 8. The multilayer article of claim 6 , further comprising a fourth layer comprising a fourth material. 9. The co-extruded multilayer article of claim 8 , wherein the fourth layer comprises a continuous outer layer.
Assignees
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Classifications
of two or more insulating layers · CPC title
composed of semi-conducting layers · CPC title
with screens or conductive layers, e.g. for avoiding large potential gradients · CPC title
Tubular articles, e.g. hoses, pipes · CPC title
Insulating · CPC title
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- What does patent US12304186B2 cover?
- This disclosure describes co-extruded multilayer articles including at least one continuous layer and one discontinuous layer, as well as systems and techniques for the manufacture of co-extruded multilayer articles. For example, a co-extruded multilayer article is described that includes a body having a plurality of layers, where a first layer of the plurality of layers is formed from a first …
- Who is the assignee on this patent?
- 3M Innovative Properties Company
- What technology area does this patent fall under?
- Primary CPC classification B32B3/14. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue May 20 2025 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).