Why Mold With Topper Plastics

Topper Plastics Incorporated (TPI) has been operating in the San Gabriel Valley for 50 years manufacturing custom molded expandable polystyrene (EPS) foam products. Our reputation for quality products and custom service is our distinction from other molders.

TPI provides quality products and services for a diverse range of California, Arizona, Nevada and Mexico manufacturers, job shops and packaging industries.

EPS Foam

Quality Service


Beginning with experienced in-house packaging and molding design experts, TPI provides quality service through every stage of product development.


TPI customers enjoy direct contact with engineering, sales, quality control, and production. TPI is able to accommodate changes in scheduling and order requirements quickly and efficiently.


TPI operates a three shift, 24 hour manufacturing facility with secondary support and monitoring equipment to insure rapid production turnaround. On site repair and maintenance services provide quick and complete service of customer tooling and production equipment.

Storage & Shipping

Spacious warehouse facilities and a well-maintained truck fleet provide added flexibility for customers' shipping needs. TPI also offers warehousing, JIT, KANBAN and other inventory control programs as customer needs require.

Foam Packaging Products Expandable Polystyrene


Economical Solutions

Competitive Pricing

TPI products are competitively priced -- backed by a knowledgeable staff who find the most economical solutions.


TPI customers realize savings across the board. Beyond competitive pricing,the lightweight composition and versatility of EPS foam make it the most cost effective solution for a variety of industry uses.

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Our Goal
Our goal is to produce superior products that exceed our customers' standards for quality, lead time, and innovation