US 12,384,078 B2
Casing member for in-vehicle camera and method of manufacturing the same
Takashi Fujita, Shizuoka (JP); and Hiroki Arai, Shizuoka (JP)
Assigned to POLYPLASTICS CO., LTD., Tokyo (JP)
Appl. No. 17/763,419
Filed by Polyplastics Co., Ltd., Tokyo (JP)
PCT Filed Sep. 16, 2020, PCT No. PCT/JP2020/035012
§ 371(c)(1), (2) Date Mar. 24, 2022,
PCT Pub. No. WO2021/060096, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 2019-177248 (JP), filed on Sep. 27, 2019.
Prior Publication US 2022/0388208 A1, Dec. 8, 2022
Int. Cl. B29C 45/00 (2006.01); B60R 11/04 (2006.01); C08K 3/26 (2006.01); C08K 3/40 (2006.01); C08K 7/14 (2006.01); G03B 30/00 (2021.01); B29K 81/00 (2006.01); B29K 105/16 (2006.01); B29K 509/00 (2006.01); B29L 31/30 (2006.01); B60R 11/00 (2006.01)
CPC B29C 45/0013 (2013.01) [B60R 11/04 (2013.01); C08K 3/26 (2013.01); C08K 3/40 (2013.01); C08K 7/14 (2013.01); G03B 30/00 (2021.01); B29K 2081/04 (2013.01); B29K 2105/16 (2013.01); B29K 2509/00 (2013.01); B29L 2031/30 (2013.01); B60R 2011/0003 (2013.01); B60R 2011/004 (2013.01); C08K 2003/265 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A casing member for an in-vehicle camera,
obtained by injection molding a resin composition that comprises 100 to 300 parts by mass of a total of a fibrous inorganic filler and a non-fibrous inorganic filler to 100 parts by mass of a polyarylene sulfide resin and has a content of an elastomer of 10% by mass or less, and
satisfying following conditions (A) and (B):
(A) when a molded product of 80 mm×80 mm×1 mm is injection molded using the resin composition under conditions of a cylinder temperature of 320° C., a mold temperature of 140° C., and a holding pressure of 70 MPa, an absolute value of (shrinkage rate in a direction perpendicular to a flow direction)−(shrinkage rate in the flow direction) is 0.5% or less; and
(B) a water absorption rate of a molded product of 80 mm×80 mm×2 mm that is injection molded using the resin composition under conditions of a cylinder temperature of 320° C., a mold temperature of 140° C., and a holding pressure of 70 MPa is 0.3% or less when subjected to a hot water immersion test at 80° C. for 300 hours.