US 11,752,751 B2
Bonding method to attach ethylene-based polymer foam with vulcanized rubber
Haiyang Yu, Shanghai (CN); Wanfu Ma, Shanghai (CN); and Xin Liu, Shanghai (CN)
Assigned to Dow Global Technologies LLC, Midland, MI (US)
Appl. No. 17/277,565
Filed by Dow Global Technologies LLC, Midland, MI (US)
PCT Filed Sep. 20, 2018, PCT No. PCT/CN2018/106736
§ 371(c)(1), (2) Date Mar. 18, 2021,
PCT Pub. No. WO2020/056678, PCT Pub. Date Mar. 26, 2020.
Prior Publication US 2022/0032596 A1, Feb. 3, 2022
Int. Cl. B32B 37/12 (2006.01); A43B 13/04 (2006.01); A43B 13/12 (2006.01); B32B 5/18 (2006.01); B32B 7/12 (2006.01); B32B 25/04 (2006.01); B32B 25/08 (2006.01); B32B 25/14 (2006.01); B32B 25/16 (2006.01); B32B 27/06 (2006.01); B32B 27/32 (2006.01); B32B 37/10 (2006.01); B32B 37/18 (2006.01); B32B 37/02 (2006.01); B29D 35/14 (2010.01)
CPC B32B 37/12 (2013.01) [A43B 13/04 (2013.01); A43B 13/12 (2013.01); B32B 5/18 (2013.01); B32B 7/12 (2013.01); B32B 25/045 (2013.01); B32B 25/08 (2013.01); B32B 25/14 (2013.01); B32B 25/16 (2013.01); B32B 27/065 (2013.01); B32B 27/327 (2013.01); B32B 37/10 (2013.01); B32B 37/182 (2013.01); B29D 35/142 (2013.01); B32B 37/02 (2013.01); B32B 2250/03 (2013.01); B32B 2250/24 (2013.01); B32B 2266/025 (2013.01); B32B 2307/30 (2013.01); B32B 2307/54 (2013.01); B32B 2307/72 (2013.01); B32B 2307/748 (2013.01); B32B 2437/02 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A process of adhering a foam structure to a rubber substrate, wherein the foam structure is formed from a first composition comprising a first ethylene-based polymer having a peak melting temperature TE1, the process comprising the following steps:
a) applying a film formed from a second composition comprising a second ethylene-based polymer to a surface of the rubber substrate to form a rubber substrate/film configuration, wherein the second ethylene-based polymer has a melt index of less than or equal to 10 g/10 min and a peak melting temperature TE2;
b) applying a compression force to the rubber substrate/film configuration at a temperature Tv, wherein 38° C.≤TE2≤Tv to form a vulcanized rubber/film laminate having an exposed surface of the film;
c) applying the foam structure to the exposed surface of the film to form a vulcanized rubber-film laminate/foam configuration; and
d) applying a compression force to the vulcanized rubber-film laminate/foam configuration at a temperature TL, wherein TE2<TL<TE1, 15° C.≤(TE1−TL)≤40° C., and 10° C.≤(TL−TE2)≤70° C. to form a vulcanized rubber-film/foam laminate.