Method for manufacturing polyolefin resin in-mold-foam-molded article
US-2017072605-A1 · Mar 16, 2017 · US
Method for manufacturing polyethylene resin foam molded article
US10100166B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10100166-B2 |
| Application number | US-201715690122-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 29, 2017 |
| Priority date | Mar 27, 2015 |
| Publication date | Oct 16, 2018 |
| Grant date | Oct 16, 2018 |
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- Title
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Abstract
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A method of producing a polyethylene resin expanded molded product includes filling a mold with expanded polyethylene resin particles, wherein an internal pressure of 0.12 to 0.16 MPa is applied to the expanded polyethylene resin particles in the mold, and forming the polyethylene resin expanded molded product by heating the expanded polyethylene resin particles and fusing the expanded polyethylene resin particles. The expanded polyethylene resin particles includes 100 parts by weight of a polyethylene resin, 0.08 to 0.25 parts by weight of a cell nucleating agent, 0.3 to 0.8 parts by weight of a polyhydric alcohol fatty acid ester, and 0.01 to 10 parts by weight of a hydrophilic compound, each of the expanded polyethylene resin particles having a weight of 2.5 to 3.5 mg. The polyethylene resin expanded molded product has a density of 0.017 to 0.021 g/cm3 and a thickness of 10 to 40 mm.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of producing a polyethylene resin expanded molded product, the method comprising: filling a mold with expanded polyethylene resin particles, wherein an internal pressure of 0.12 to 0.16 MPa is applied to the expanded polyethylene resin particles in the mold; and forming the polyethylene resin expanded molded product by heating the expanded polyethylene resin particles and fusing the expanded polyethylene resin particles, wherein the expanded polyethylene resin particles comprise: 100 parts by weight of a polyethylene resin; 0.08 to 0.25 parts by weight of a cell nucleating agent; 0.3 to 0.8 parts by weight of a polyhydric alcohol fatty acid ester; and 0.01 to 10 parts by weight of a hydrophilic compound, each of the expanded polyethylene resin particles having a weight of 2.5 to 3.5 mg, and wherein the polyethylene resin expanded molded product has a density of 0.017 to 0.021 g/cm 3 and a thickness of 10 to 40 mm. 2. The method according to claim 1 , wherein the polyhydric alcohol fatty acid ester is a glycerin fatty acid ester. 3. The method according to claim 1 , wherein the cell nucleating agent is an inorganic nucleating agent. 4. The method according to claim 2 , wherein the cell nucleating agent is an inorganic nucleating agent. 5. The method according to claim 3 , wherein the cell nucleating agent is selected from the group of consisting of talc, calcium stearate, calcium carbonate, silica, kaolin, titanium oxide, bentonite, and barium sulphate. 6. The method according to claim 4 , wherein the cell nucleating agent is selected from the group of consisting of talc, calcium stearate, calcium carbonate, silica, kaolin, titanium oxide, bentonite, and barium sulphate. 7. The method according to claim 1 , wherein the hydrophilic compound is a compound comprising a carboxyl group or a derivative thereof, a compound comprising a hydroxyl group or a derivative thereof, a compound comprising an amino group or a derivative thereof, a compound comprising a sulfo group or a derivative thereof, a compound comprising a polyoxyethylene group or a derivative thereof, or a hydrophilic polymer. 8. The method according to claim 2 , wherein the hydrophilic compound is a compound comprising a carboxyl group or a derivative thereof, a compound comprising a hydroxyl group or a derivative thereof, a compound comprising an amino group or a derivative thereof, a compound comprising a sulfo group or a derivative thereof, a compound comprising a polyoxyethylene group or a derivative thereof, or a hydrophilic polymer. 9. The method according to claim 3 , wherein the hydrophilic compound is a compound comprising a carboxyl group or a derivative thereof, a compound comprising a hydroxyl group or a derivative thereof, a compound comprising an amino group or a derivative thereof, a compound comprising a sulfa group or a derivative thereof, a compound comprising a polyoxyethylene group or a derivative thereof, or a hydrophilic polymer. 10. The method according to claim 4 , wherein the hydrophilic compound is a compound comprising a carboxyl group or a derivative thereof, a compound comprising a hydroxyl group or a derivative thereof, a compound comprising an amino group or a derivative thereof, a compound comprising a sulfo group or a derivative thereof, a compound comprising a polyoxyethylene group or a derivative thereof, or a hydrophilic polymer. 11. The method according to claim 5 , wherein the hydrophilic compound is a compound comprising a carboxyl group or a derivative thereof, a compound comprising a hydroxyl group or a derivative thereof, a compound comprising an amino group or a derivative thereof, a compound comprising a sulfo group or a derivative thereof, a compound comprising a polyoxyethylene group or a derivative thereof, or a hydrophilic polymer. 12. The method according to claim 6 , wherein the hydrophilic compound is a compound comprising a carboxyl group or a derivative thereof, a compound comprising a hydroxyl group or a derivative thereof, a compound comprising an amino group or a derivative thereof, a compound comprising a sulfo group or a derivative thereof a compound comprising a polyoxyethylene group or a derivative thereof, or a hydrophilic polymer.
Assignees
Inventors
Classifications
Thickness · CPC title
Polyethylene · CPC title
- C08J9/24Primary
by surface fusion and bonding of particles to form voids, e.g. sintering (of expandable particles C08J9/232) · CPC title
Making or treating expandable particles · CPC title
cellular or porous · CPC title
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Frequently asked questions
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- What does patent US10100166B2 cover?
- A method of producing a polyethylene resin expanded molded product includes filling a mold with expanded polyethylene resin particles, wherein an internal pressure of 0.12 to 0.16 MPa is applied to the expanded polyethylene resin particles in the mold, and forming the polyethylene resin expanded molded product by heating the expanded polyethylene resin particles and fusing the expanded polyethy…
- Who is the assignee on this patent?
- Kaneka Corp
- What technology area does this patent fall under?
- Primary CPC classification C08J9/24. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 16 2018 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).