POWER OF ATTORNEY

The undersigned, an executive officer or director of A. Schulman, Inc., a
Delaware corporation, hereby constitutes and appoints each of J. Bret Treier and
Aaron S. Berke his or her true and lawful attorneys-in-fact and agent(s) with
full power of substitution and resubstitution for him or her and in his or her
name, place and stead, in any and all capacities, to sign all Securities and
Exchange Commission Forms 3, 4, 5 and 144, including any and all amendments
thereto and all electronic application forms therefor, and to file the same, and
other documents relating thereto, with the Securities and Exchange Commission,
and grants unto said attorney(s)-in-fact and substitute(s) full power and
authority to do each and every act and thing requested and necessary to be done
in and about the premises as fully to all intents and purposes as he or she
might do in person, and hereby ratifies and confirms all things that said
attorney(s)-in-fact and substitute(s) may lawfully do and seek to be done by
virtue hereof.

This Power of Attorney shall be valid until such time as it is revoked by the
undersigned in writing.

Date: December 7, 2015 			/s/ Andrean Horton