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2007-07-28 News Release

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The REJUVEN8 family of plastics based on Green Initiative

Less energy usage, reduced greenhouse emissions add to eco advantages of innovative new family of plastics materials made with NatureWorks Polymer.

Spartech Corporation, a leading producer of engineered plastics sheet, polymeric compounds, and engineered products, formally introduces a new family of environmentally responsible plastics that can significantly reduce energy usage and greenhouse gas emissions compared to conventional materials. Spartech’s new REJUVEN8* family of sheet materials is made from annually renewable resources instead of petroleum and supports environmental protection in eight key ways. At the same time, this innovative new product line offers customers excellent performance for diverse printing and thermoforming applications.

New Materials for Printing and Thermoforming
REJUVEN8 and REJUVEN8 Plus sheet, the first two materials in this new product family, are made with NatureWorks** polylactide (PLA) polymer. REJUVEN8 custom sheet and rollstock products are specifically developed for thermoforming applications. Its unique properties, however, also allow it to function well for printed applications. It has excellent clarity and die-cutting characteristics, with strength comparable to that of general purpose acrylic.

REjuven8 Gift Cards. Click Here for High resolution image. photo: Spartech Corp

REJUVEN8 Plus sheet is a strength-modified grade with enhanced physical properties vs. standard PLA and impact properties similar to polyethylene terephthalate (PET). This white, opaque material was specifically developed for graphic art and printed applications, although it also works very well in most thermoforming processes. Innovative secondary processing criteria can raise heat resistance to well over 200º F vs. the 105º F – 120º F maximum temperature resistance of standard PLA materials.

Eight Ways to Benefit the Environment
The REJUVEN8 family of plastics supports Spartech’s mission of minimizing environmental impact in the following ways:
1. Less energy usage (to make the resin): Compared to polyvinyl
chloride (PVC) and other conventional plastics, REJUVEN8 sheet requires an estimated 15 percent less energy to produce.
2. An estimated 41 percent less emissions: Production of NatureWorks
polymer releases less harmful greenhouse gas emissions than PVC and other conventional plastics.
3. Renewable resources: REJUVEN8 and REJUVEN8 Plus sheet are primarily
(99 percent and 95 percent, respectively) based on annually renewable materials such as corn, compared to conventional, petroleum-based plastics.
4. Biodegradable through industrial composting: REJUVEN8 products are
biodegradable through industrial composting and meet the only recognizable standard for biodegradability of plastics, ASTM D6400.
5. Elimination of chlorine gas: This potentially harmful by-product of
PVC production is eliminated with the REJUVEN8 products.
6. Elimination of DEHP plasticizer offgassing: This is another
drawback of most PVCs that the REJUVEN8 products avoid.
7. Less energy used when extruding/processing applications.
8. Support for North American farmers: NatureWorks polymer is made
from sugar found in corn and other plants.

According to Todd Niemuth, market manager at Spartech, “Spartech’s Green Initiative is focused on developing more environmentally compatible products and production methods. We’ve already received industry recognition for this program, and we are continuing to invest in new material technologies that minimize environmental impact and help our customers meet regulatory requirements worldwide. The REJUVEN8 product family is a great example of this dual mission and underscores Spartech’s seriousness about being champions for the environment.”

The two REJUVEN8 product grades are well-suited to a range of applications. REJUVEN8 sheet is ideal for food packaging, drinking cups, and tableware. Typical applications for REJUVEN8 Plus include consumer packaging, gift and phone cards, and plant tags. Cards using these materials were commercialized last year with Spartech card customers, including several leading national retail brands.

About Spartech
Spartech Corporation is a leading producer of engineered thermoplastic sheet materials, polymeric compounds and concentrates, and engineered plastics product solutions. The Company has facilities located throughout the United States, Canada, Mexico, and Europe with sales of approximately $1.5 billion, annually.

About NatureWorks LLC
NatureWorks LLC is a stand-alone company, wholly owned by Cargill. The company produces a family of commercial polymers, utilizing the carbon found in simple plant sugars to create a proprietary polyactide polymer, which is marketed under the brand names NatureWorks and Ingeo***.

* REJUVEN8 is a trademark of Spartech Corporation.
** NatureWorks is a registered trademark of NatureWorks LLC.
*** Ingeo is a trademark of NatureWorks LLC.

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