US 12,247,118 B2
Method for producing a rubber-plastic composite
Konstantin Efimov, Hefei (CN); Anna-Lena Dreier, Hannover (DE); Klaus Hülsmann, Haltern am See (DE); Andreas Pawlik, Recklinghausen (DE); Marco Kormann, Fuerth (DE); and Maximilian Drexler, Herzogenaurach (DE)
Assigned to Continental Reifen Deutschland GmbH, Hannover (DE)
Appl. No. 17/753,777
Filed by Continental Reifen Deutschland GmbH, Hannover (DE)
PCT Filed Sep. 1, 2020, PCT No. PCT/EP2020/074257
§ 371(c)(1), (2) Date Mar. 14, 2022,
PCT Pub. No. WO2021/052740, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 10 2019 214 073.4 (DE), filed on Sep. 16, 2019.
Prior Publication US 2022/0372256 A1, Nov. 24, 2022
Int. Cl. B29C 45/72 (2006.01); B29B 11/12 (2006.01); B29B 13/04 (2006.01); B29C 45/14 (2006.01); B29C 70/68 (2006.01); B29C 71/02 (2006.01); C08J 3/24 (2006.01); C08L 15/00 (2006.01); B29K 21/00 (2006.01); B29K 77/00 (2006.01); B29L 31/50 (2006.01)
CPC C08L 15/005 (2013.01) [B29B 11/12 (2013.01); B29B 13/04 (2013.01); B29C 45/1418 (2013.01); B29C 45/7207 (2013.01); B29C 71/02 (2013.01); C08J 3/244 (2013.01); C08J 3/245 (2013.01); C08J 3/247 (2013.01); B29K 2021/003 (2013.01); B29K 2077/00 (2013.01); B29L 2031/50 (2013.01); C08J 2315/00 (2013.01); C08J 2477/00 (2013.01); C08L 2312/00 (2013.01)] 20 Claims
 
1. A method for producing a rubber-plastic composite, comprising the following steps:
a) shaping an elastomer which is unvulcanized to form a shaped elastomer,
b) partially vulcanizing the shaped elastomer at a temperature of at least 140° C. up to a degree of vulcanization in the range from 10% to 40% to form a partially vulcanized elastomer,
c) cooling the partially vulcanized elastomer to a temperature of less than 100° C. within less than 20 minutes,
d) overmolding the partially vulcanized elastomer with a plastic, and
e) heat treating the partially vulcanized elastomer overmolded with the plastic at a temperature in the range from 100° C. to 170° C. for a duration of from 5 minutes to 5 hours to complete the vulcanization and thus forming the rubber-plastic composite;
wherein the plastic is polyamide (PA) and the elastomer is (partially) hydrogenated nitrile rubber (HNBR).