Polyolefin-based resin expanded beads
US-2015158990-A1 · Jun 11, 2015 · US
Thermoplastic resin foamed particles
USRE48098E · US · E1
| Field | Value |
|---|---|
| Publication number | US-RE48098-E |
| Application number | US-201616263547-A |
| Country | US |
| Kind code | E1 |
| Filing date | Jun 3, 2016 |
| Priority date | Jun 10, 2015 |
| Publication date | Jul 14, 2020 |
| Grant date | Jul 14, 2020 |
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- Title
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Abstract
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Thermoplastic resin foamed particles of the present invention including more than one or more functional additive selected from inorganic powder and inorganic fibers each includes a core layer formed of a thermoplastic resin and a coating layer in a foamed state formed of a thermoplastic resin, the mass ratio of the coating layer to the core layer is 99:1 to 50:50, the content (X) of the functional additive in the core layer is 5 to 90% by mass, and the content of the functional additive in the coating layer is smaller than the content (X) of the functional additive in the core layer. By this way, thermoplastic resin foamed particles from which a homogeneous foamed particle molding having excellent dimension stability, fusibility and appearance can be obtained while containing functional additive are provided.
First claim
Opening claim text (preview).
The invention claimed is: 1. Thermoplastic resin foamed particles comprising more than one or more functional additive selected from inorganic powder and inorganic fibers, wherein each particle comprises a core layer formed of a thermoplastic resin and a coating layer in a foamed state formed of a thermoplastic resin, the mass ratio of the coating layer to the core layer is 99:1 to 50:50, the content (X) of the functional additive in the core layer is 5 to 90% by mass, and the content of the functional additive in the coating layer is smaller than the content (X) of the functional additive in the core layer. 2. The thermoplastic resin foamed particles according to claim 1 , wherein the content of the functional additive in the coating layer is lower than 20% by mass (including 0). 3. The thermoplastic resin foamed particles according to claim 1 , wherein the functional additive is an a conductive carbon. 4. The thermoplastic resin foamed particles according to claim 1 , wherein the thermoplastic resin that forms the core layer and the thermoplastic resin that forms the coating layer are both polyolefin-based resins. 5. The thermoplastic resin foamed particles according to claim 2 , wherein the functional additive is an a conductive carbon. 6. The thermoplastic resin foamed particles according to claim 2 , wherein the thermoplastic resin that forms the core layer and the thermoplastic resin that forms the coating layer are both polyolefin-based resins.
Assignees
Inventors
Classifications
in the form of filamentary material, e.g. combined with extrusion · CPC title
Post-expanding of foam beads or sheets · CPC title
Nanoparticles · CPC title
Electromagnetic wave shielding material · CPC title
Use of inorganic materials not provided for in groups {B29K2503/00 - B29K2507/00,} as filler · CPC title
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- What does patent USRE48098E cover?
- Thermoplastic resin foamed particles of the present invention including more than one or more functional additive selected from inorganic powder and inorganic fibers each includes a core layer formed of a thermoplastic resin and a coating layer in a foamed state formed of a thermoplastic resin, the mass ratio of the coating layer to the core layer is 99:1 to 50:50, the content (X) of the functi…
- Who is the assignee on this patent?
- Jsp Corp
- What technology area does this patent fall under?
- Primary CPC classification B29B9/12. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jul 14 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (E1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).