IP Library › Granted Patent US 12,305,026
Granted Patent B2
US 12,305,026 · App. 16/532,675 · Granted May 20, 2025

Composite resin molded article

Inventors: Masashi Hamabe (Osaka, JP); Toshifumi Nagino (Osaka, JP); Masayoshi Imanishi (Osaka, JP); Shouma Nishino (Osaka, JP)
Assignee: Panasonic Corporation
C08L23/12C08L2205/16
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Quick Facts
Patent No.
US 12,305,026
App. No.
16/532,675
Granted
May 20, 2025
Kind
B2
Abstract

A composite resin molded article includes: a base resin; and fillers dispersed in the base resin, wherein the fillers include fibrous fillers and particulate fillers having aspect ratios lower than aspect ratios of the fibrous fillers.

Claims (12)

1. A composite resin molded article containing:

a base resin; and

fillers dispersed in the base resin,

wherein the fillers include fibrous fillers having aspect ratios of 10 or higher, and particulate fillers having aspect ratios of 2 or lower,

wherein a ratio of the fibrous fillers in the fillers ranges from 1% to 10%, and a ratio of the particulate fillers in the fillers ranges from 50% to 70%, and

wherein a ratio of other fibers having aspect ratios of higher than 2 and lower than 10 in the fillers is 20% to 49%.

2. The composite resin molded article according to claim 1 , wherein a ratio of the fibrous fillers in the fillers present at a surface layer of the composite resin molded article is higher than a ratio of the fibrous fillers in the fillers present at a core side of the composite resin molded article.

3. The composite resin molded article according to claim 1 , wherein the fillers have lightness of L values of higher than 80 determined by a color difference measurement.

4. The composite resin molded article according to claim 1 , wherein the composite resin molded article has lightness of different L values determined by a color difference measurement in a cross-sectional direction, wherein the lightness of L values at a surface layer of the composite resin molded article are higher than the lightness of L values at a core side of the composite resin molded article.

5. The composite resin molded article according to claim 1 , wherein at least one end part of each fibrous filler in the composite resin molded article is defibrated.

6. The composite resin molded article according to claim 1 , wherein the fillers are composed of natural fibers.

7. The composite resin molded article according to claim 1 , wherein the base resin is composed of an olefin resin.

Assignments (2)
CHANGE OF NAME Recorded May 9, 2022
From: PANASONIC CORPORATION
To: PANASONIC HOLDINGS CORPORATION
Reel/Frame 059909/0607 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 5, 2019
From: HAMABE, MASASHI; NAGINO, TOSHIFUMI; IMANISHI, MASAYOSHI; NISHINO, SHOUMA
To: PANASONIC CORPORATION
Reel/Frame 051183/0416 →
Priority Claims (1)
JP 2018-157633 · Aug 24, 2018 · national
Continuity (1)
Related Publication 20200062940A1 · Feb 27, 2020
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