Chem-Trend® Flow Promoter Enhances Rotomolding Efficiency

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New specialty product improves throughput, surface quality and resin coverage

Chem-Trend's Flow Promoter helps eliminate pinholing in finished products

Chem-Trend® Flow Promoter allows our customers to gain efficiencies in their manufacturing operations. It is another example of Chem-Trend’s commitment to developing process solutions that help our customers become more competitive in the market.

Chem-Trend, a global leader in the development and production of high-performance release agents and casting lubricants, has developed a new specialty product that improves efficiency and quality during the rotomolding process. Called Chem-Trend® Flow Promoter, this process chemical specialty helps resins adhere to hard-to-reach mold surfaces until molded parts are structurally sound, then allows for easy and clean release with a blemish-free appearance.

“Chem-Trend® Flow Promoter allows our customers to gain efficiencies in their manufacturing operations,” said Devanir Moraes, Chem-Trend president and CEO. “It is another example of Chem-Trend’s commitment to developing process solutions that help our customers become more competitive in the market.”

Chem-Trend® Flow Promoter helps ensure that the fully molten skin of the formed part remains in close contact with the mold wall throughout the heating and initial cooling cycle. Once the molded part begins to retain enough structural rigidity to resist collapse, Flow Promoter allows it to release cleanly, quickly and evenly, without any surface abrasion.

Rotomolding is a process that allows seamless hollow components, such as storage tanks, industrial parts and toys, to be manufactured with a variety of ground thermoplastic resins. These resins are tumbled against the inner surface of a hot rotating molding tool, where they coat the mold surface and fuse together. As molded parts take on increasingly complex geometries, however, it can be difficult for resins to enter tight corners and narrow cross-sections. Flow Promoter targets those areas to eliminate resin starvation and the resulting pinholds that can form on the part’s surface.

When applied to mold parting lines and molded-in threads, Flow Promoter prevents blow holes and resin bridging around tight internal radii. Its specifically designed packaging optimizes application, preventing any visible transfer to the finished part and very low build-up on the mold.

“Because the resin sometimes has difficulty reaching and remaining in the places where it is most needed, Chem-Trend developed Flow Promoter,” said Moraes, “It decreases defects, scrap, downtime and other waste related to poor quality. Flow Promoter improves the cosmetic appearance of the final product and eliminates pinholing, which is a cost-saving solution our customers appreciate (see photo).”

Flow Promoter is best used in conjunction with Chem-Trend’s Mono-Coat® mold release system to improve part release, maximize operational efficiency and improve product appearance.

About Chem-Trend

Founded in 1960, Chem-Trend is a global organization focused on delivering value-added solutions to improve quality, reduce costs and boost the productivity of molding and casting operations. Chem-Trend offers a globally integrated network of experienced, knowledgeable and insightful production and technical experts in all major manufacturing regions around the world. Chem-Trend serves global manufacturers through offices in North America, South America, Asia and Europe. As a member of the Freudenberg Group, Chem-Trend adheres to the group’s “Guiding Principles,” which include commitments to providing value for customers; innovation; leadership; encouraging the well-being and development of our people; corporate and personal responsibility; and a long-term orientation. Chem-Trend’s company culture, which is intertwined with the “Guiding Principles,” drives the organization to deliver exceptional value to its customers through its high standards for conduct. For more information, visit http://www.chemtrend.com.

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Charlotte Fisher
The Quell Group
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