Polycom Huntsman, Inc. and Subsidiaries
                                                                    Exhibit 23.1
                                                                                
                                                                                
                         CONSENT OF INDEPENDENT AUDITORS
                                        


   We consent to the incorporation by reference in the Registration Statements
on Form S-8 (Nos. 33-20437 and 33-61322) and Form S-3 (No. 333-24527) of
Spartech Corporation of our report dated April 17, 1998 relating to the
financial statements of Polycom Huntsman, Inc. and Subsidiaries included in this
Current Report on Form 8-K/A of Spartech Corporation dated March 31, 1998.
   
   
                                   Ernst & Young LLP
Pittsburgh, Pennsylvania
May 17, 1999


Polycom Huntsman, Inc. and Subsidiaries
                                                                    Exhibit 23.2
                                                                                
                                                                                
                         CONSENT OF INDEPENDENT AUDITORS
                                        


   We consent to the incorporation by reference in the Registration Statements
on Form S-8 (Nos. 33-20437 and 33-61322) and Form S-3 (No. 333-24527) of
Spartech Corporation of our report dated April 1, 1998 relating to the financial
statements of Polycom Huntsman SA for the year ended February 28, 1998 included
in the Current Report on Form 8-K/A of Spartech Corporation dated March 31,
1998.
   
   
                                   Amyot Exco
Paris, France
May 19, 1999