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Coating and Painting

 

Alternative Coating Systems, Intelicoat, 2002.

  Employing green chemistry thinking, InteliCoat developed product lines that utilize non-solvent based coatings and reaction conditions, including water-based and UV-curable coatings, to significantly reduce the amount of toxic organic chemicals it uses and releases annually. InteliCoat presented information on its financial and environmental decision-making process for switching its primary product lines and the associated impact of the changes made for the company. Download PDF file (229.08 kB)

Alternatives to Solvent-Based Coatings, 1994

  Alternatives to Solvent-Based Coatings, 1994 Download PDF file (2.16 MB)

Cleaning Urethane, Ink and Paint Manufacturing Vessels - Alternatives to Toxic Solvents in Cleaning Systems. 1997.

  In 1995, Raffi and Swanson, Inc. received a $20,000 grant from the Massachusetts Toxics Use Reduction Institute (TURI) to examine alternatives to toxic solvents in the company’s cleaning operations. Raffi and Swanson set a project goal of reducing chemical use and byproducts from these cleaning operations by 50%. Raffi and Swanson met this goal, reducing chemical use and emissions by roughly 50% (roughly 46,000 lb.) and chemical byproducts 50% (roughly 200,000 lb.). These reductions were achieved through the implementation of over thirty worker-identified changes to cleaning practices. These changes included redesigning equipment and procedures to eliminate the need for solvent cleaning, methods to increase solvent reuse, and more careful management of solvent distribution and application throughout the site. These changes have saved Raffi and Swanson approximately $18,000/yr. During the course of the project, Raffi and Swanson worked closely with the TURI Surface Cleaning Lab to evaluate alternatives to N-methyl pyrrolidone in the company’s urethane reactor vessel cleaning operation. The Surface Cleaning Lab evaluated seven aqueous cleaners and four semi-aqueous cleaners as replacements for N-methyl pyrrolidone. Two semi-aqueous cleaners were the most promising substitutes but the inability to recycle the cleaners makes them cost-prohibitive. Download PDF file (1.34 MB)

Electron Beam Curing of Polymers in Coating Processes, Metallized Products Inc. 1996.

  TURI Technical Report No. 34. Metallized Products, Inc. (MPI) chose Electron Beam (EB) curing over more traditional coating/curing methods, a choice which has allowed them to develop new, unique products and to have a lower impact on the environment than if they had chosen a solvent-based system. The coatings used in EB curing are solvent free and do not require thermal drying, allowing the process to run at very high speeds. EB curing also allows MPI to avoid the regulatory reporting and permitting requirements associated with solvent- and aqueous-based coating processes. Though capital costs of these systems are high, the production time, space, and energy requirements are low, making EB an economically attractive coating method. Download PDF file (200.40 kB)

Substitution Case Study: Alternatives to Solvent-based Paints. 1993.

  TURI Technical Report No. 4. A Massachusetts producer of specialized metal tool cabinets has successfully switched from solvent-based to water-based paints in their coating operations. The painting process involves coating the metal drawers with a primer coat, and then spray painting the cabinets and drawer fronts with the color coat. Originally the components were spray-painted with solvent-based (xylene) paints for both the primer and color coats. In August 1981, the company switched over to a water-based first coat for the metal drawers, which is applied by electrodeposition in a fully automated process line. After the paint is applied, the drawer is low temperature baked at 25Q-2750f' and conveyed to the spray booths for color coating. Although the reasons for implementing the electrodeposition tank were based on the fact that the process provided a better finish and increased production capacity, use of the electrodeposition tank also eliminated the waste produced from the spray paint application of the primer coat. The entire cost for the electrodeposition system was about $500,000 and included purchase and installation of the baking oven, the 2500 gallon tank and the control system. Download PDF file (1.26 MB)