St Louis, Missouri-US polyurethane producer Chemline has introduced what it calls "a totally innovative" PU/wood composite based on its Chemthane 7030, a two-component, 100-percent solids, spray polyurethane.
The St Louis-based group said this composite board, designed for forms for making concrete parts, has been launched following "decades of experience in the production of speciality coatings for wood protection," as well as encapsulation for concrete forms, audio enclosures and transportation cases.
Chemline said in its 12 Jan statement that, previously, concrete parts were mostly made using wooden or cardboard production board, which have poor product quality, a short life-span and high production costs.
But Chemline's new composite, with a rigid wood or wood laminate core has a heavy wear-resistant coating of polyurethane, which "significantly extends the lifespan of the wood in comparison with production boards made completely of wood or synthetics." This gives "long-term consistent quality of the concrete products," claims Chemline.
The coating improves quality and cost-effectiveness in making concrete and masonry form and support products, according to the company.
The polymer is sprayed directly onto the prepared wooden substrate to form a seamless, plastic barrier against abrasion, impact and tearing, Chemline said. Even if the coating is punctured or torn, the Chemthane 7030 forms a tight bond will not allow the coating to be peeled or torn off the wood substrate. In concrete production, the forms coated with polyurethane can be used for twenty times more parts than unprotected wood or concrete.
Chemthane 7030 is spray-applied directly over wooden substrates. Since it is 100 percent solids there is no solvent to produce volatile organic compounds. This product requires 1:1, high pressure spray equipment.
Chemline Inc. makes spray-applied, high-performance polyurethanes, polyureas and epoxy polymers for use in a wide variety of industrial and construction industries. "