Molded article provided with a resin part

Patent metadata

Field	Value
Publication number	US-11891498-B2
Application number	US-202016861208-A
Country	US
Kind code	B2
Filing date	Apr 28, 2020
Priority date	Oct 31, 2017
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

Examples described herein relate to a molded article provided with a resin part formed with a polyolefin resin composite material, the polyolefin resin composite material containing a polyolefin resin and 10 to 150 parts by mass of cellulose based on 100 parts by mass of the polyolefin resin, wherein an area of an aggregate of the cellulose is less than 20,000 μm 2 .

First claim

What is claimed is:

1. A molded article made of a resin part formed with a polyolefin resin composite material, the polyolefin resin composite material comprising:
a polyolefin resin; and
25 to 150 parts by mass of cellulose based on 100 parts by mass of the polyolefin resin, wherein an area of an aggregate of the cellulose is more than 500 μm 2 and less than 20,000 μm 2 , wherein the cellulose is integrated with water, and wherein the polyolefin resin composite material has a modulus of elongation of 1.25 GPa or more.

2. The molded article according to claim 1 , wherein the cellulose is a plant-derived, fibrous cellulose.

3. The molded article according to claim 1 , wherein the polyolefin resin is at least one of a polyethylene resin, a polypropylene resin, and an acrylonitrile/butadiene/styrene copolymer resin.

4. The molded article according to claim 2 , wherein the polyolefin resin is at least one of a polyethylene resin, a polypropylene resin, and an acrylonitrile/butadiene/styrene copolymer resin.

5. The molded article according to claim 1 , wherein the molded article is a lamp body of a lighting appliance, a speaker unit, a connection box, a connector, a pulley, or a film for a house.

6. The molded article according to claim 2 , wherein the molded article is a lamp body of a lighting appliance, a speaker unit, a connection box, a connector, a pulley, or a film for a house.

7. The molded article according to claim 3 , wherein the molded article is a lamp body of a lighting appliance, a speaker unit, a connection box, a connector, a pulley, or a film for a house.

8. The molded article according to claim 4 , wherein the molded article is a lamp body of a lighting appliance, a speaker unit, a connection box, a connector, a pulley, or a film for a house.

9. The molded article according to claim 1 , wherein the polyolefin resin is melt-kneaded with the cellulose in a presence of water.

10. The molded article according to claim 1 , wherein an amount of the water is 1 to 225 parts by mass based on 100 parts by mass of the polyolefin resin.

11. The molded article according to claim 1 , wherein the area of the aggregate of the cellulose corresponds to a cross-sectional area.

Assignees

• Furukawa Electric Co Ltd

Inventors

• Kim Jaekyung
• Suyama Kenichi
• Nakajima Yasuo
• Kozawa Eiji

Classifications

• C08L1/02 Primary

  Cellulose; Modified cellulose · CPC title

• C08L101/025

  containing nitrogen atoms · CPC title

• C08L51/06

  grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond · CPC title

• F21V15/01

  Housings, e.g. material or assembling of housing parts (F21V15/02 takes precedence {housings forming signs or letters G09F13/04}) · CPC title

• H01R13/504

  different pieces being moulded, cemented, welded, e.g. ultrasonic welding, or swaged together · CPC title