Multilayered polyolefin structure

A thermoplastic, multilayer structure comprising:

• a first extruded sheet capable of thermoforming into end products which comprises:
• a first polyolefin;
• and
• at least a film comprising a polymer selected from the group consisting of an oriented, second polyolefin different from said first polyolefin and an oriented polyester, joined to said first sheet whereby sagging is prevented upon thermoforming.

A method of forming a multilayer structure comprising:

• forming a first extruded sheet capable of thermoforming into end products which comprises:
• a first polyolefin and an inert, inorganic filler material;
• forming a film comprising a polymer selected from the group consisting of oriented polyolefins and oriented polyesters;
• and attaching said first sheet to said film.

A method of forming a multilayer structure comprising:

• forming a first extruded, nonoriented sheet capable of thermoforming into end products which comprises:
• a first polyolefin and an inert, inorganic filler material;
• forming a film comprising a polymer selected from the group consisting of oriented polyolefins and oriented polyesters;
• and attaching said first sheet to said film.