Resin material composition and injection molded article

Patent metadata

Field	Value
Publication number	US-9803076-B2
Application number	US-201615156724-A
Country	US
Kind code	B2
Filing date	May 17, 2016
Priority date	May 29, 2015
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

The present invention provides a resin material composition including 25 to 65% by mass of a thermoplastic polyolefin resin, 0.5 to 22% by mass of a glass wool, and 5 to 35% by mass of a thermoplastic elastomer.

First claim

The invention claimed is:

1. A molded article of a resin material composition comprising:
a mixture of different thermoplastic polymer materials including a thermoplastic polyolefin resin as a matrix resin and a thermoplastic elastomer; and
a glass wool, wherein
the thermoplastic polyolefin resin is contained in the resin material composition at a formulation ratio of 25 to 65% by mass,
the glass wool is contained in the resin material composition at a formulation ratio of 0.5 to 22% by mass, the glass wool has elongated fibers entangled with each other in an arrangement consistent with cotton and the elongated fibers of the glass wool are bent and contained within the matrix resin,
the thermoplastic elastomer is contained in the resin material composition at a formulation ratio of 5 to 35% by mass, and
the molded article has a Charpy impact value of 7 KJ/m 2 or more which is measured by carrying out the Charpy impact test ((23° C., notched, a notch: Type A) in accordance with JIS K7111) of the molded resin material.

2. The molded article of a resin material composition according to claim 1 , further comprising a non-fibrous inorganic filler in the resin material composition at a formulation ratio of 5 to 35%.

3. The molded article of a resin material composition according to claim 1 , wherein the thermoplastic polyolefin resin is contained in the resin material composition at a formulation ratio of 30 to 60% by mass.

4. The molded article of a resin material composition according to claim 2 , wherein the thermoplastic polyolefin resin is contained in the resin material composition at a formulation ratio of 30 to 60% by mass.

5. The molded article of a resin material composition according to claim 1 , wherein the thermoplastic polyolefin resin in the resin material composition has an MFR (230° C., 2.16 N) of 37 to 120 g/10 min.

6. The molded article of a resin material composition according to claim 2 , wherein the thermoplastic polyolefin resin in the resin material composition has an MFR (230° C., 2.16 N) of 37 to 120 g/10 min.

7. The molded article of a resin material composition according to claim 3 , wherein the thermoplastic polyolefin resin in the resin material composition has an MFR (230° C., 2.16 N) of 37 to 120 g/10 min.

8. The molded article of a resin material composition according to claim 4 , wherein
the thermoplastic polyolefin resin in the resin material composition has an MFR (230° C., 2.16 N) of 37 to 120 g/10 min, and
a raised height of a weld part of the molded article is 10 μm or less.

9. A resin material composition comprising:
a mixture of different thermoplastic polymer materials including a thermoplastic polyolefin resin as a matrix resin and a thermoplastic elastomer; and
a glass wool, wherein
the thermoplastic polyolefin resin has a hardness greater than a hardness of the thermoplastic elastomer,
the thermoplastic polyolefin resin is contained in the resin material composition at a formulation ratio of 25 to 65% by mass,
the glass wool is contained in the resin material composition at a formulation ratio of 0.5 to 22% by mass, the glass wool has elongated fibers entangled with each other in an arrangement consistent with cotton and the elongated fibers of the glass wool are bent and contained within the matrix resin, and
the thermoplastic elastomer is contained in the resin material composition at a formulation ratio of 5 to 35% by mass.

10. The resin material composition according to claim 9 , further comprising a non-fibrous inorganic filler in the resin material composition at a formulation ratio of 5 to 35%.

11. The resin material composition according to claim 9 , wherein the thermoplastic polyolefin resin is contained in the resin material composition at a formulation ratio of 30 to 60% by mass.

12. The resin material composition according to claim 10 , wherein the thermoplastic polyolefin resin is contained in the resin material composition at a formulation ratio of 30 to 60% by mass.

13. The resin material composition according to claim 9 , wherein the thermoplastic polyolefin resin in the resin material composition has an MFR (230° C., 2.16 N) of 37 to 120 g/10 min.

14. The resin material composition according to claim 10 , wherein the thermoplastic polyolefin resin in the resin material composition has an MFR (230° C., 2.16 N) of 37 to 120 g/10 min.

15. The resin material composition according to claim 11 , wherein the thermoplastic polyolefin resin in the resin material composition has an MFR (230° C., 2.16 N) of 37 to 120 g/10 min.

16. The resin material composition according to claim 12 , wherein the thermoplastic polyolefin resin in the resin material composition has an MFR (230° C., 2.16 N) of 37 to 120 g/10 min.

17. An injection molded article comprising the resin material composition as claimed in claim 9 and a raised height of a weld part of the molded article is 10 μm or less.

18. The injection molded article according to claim 17 having a Charpy impact value of 7 KJ/m 2 or more which is measured by carrying out the Charpy impact test ((23° C., notched, a notch: Type A) in accordance with JIS K7111) of the molded resin material.

19. The molded article of a resin material composition according to claim 1 , wherein the glass wool has an average fiber diameter of 3 to 20 μm and an average aspect ratio of 10 to 100.

20. The resin material composition according to claim 9 , wherein the glass wool has an average fiber diameter of 3 to 20 μm and an average aspect ratio of 10 to 100.

Assignees

• Toyoda Gosei Kk
• Toyota Gosei Co Ltd

Inventors

• TERAI Satsuki
• Uchida Hitoshi
• Fujimoto Kazuyoshi

Classifications

• B29K2021/003

  Thermoplastic elastomers · CPC title

• C08K7/14

  Glass · CPC title

• B29K2105/0094

  having particular viscosity · CPC title

• B29K2995/0089

  Impact strength or toughness · CPC title

• B29K2105/0854

  in the form of a non-woven mat · CPC title