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New book of Horst Peterhans details the spray-up process

News International-French

18 Aug 2014

One of the biggest Brazilian experts in composites, Horst Peterhans, has just published “Spray-up”, a book that addresses the molding process quite common in factories of bus bodies, railway compositions, agricultural implements, pools and boats, among thousands of others examples.

In 258 pages, he explains the technology that combines the simultaneous spraying of resin and fiberglass over the mold. The book is a gigantic step by step of what to do – and especially of what not to do when opting for spray-up as the production process. 

At 63 years old, 40 of which spent molding composite parts, Peterhans does not shy away from his roots, nor does he make concessions. His Germanic style, bluntly – sometimes, a little tough – may scare some sensitive readers. After the scare, though, these readers will learn to design a mold, apply gelcoat and demold the part correctly. In addition, will also learn, with the help of dozens of charts, tables and illustrations, how to make their factory cleaner and more humanized. 

“What is cost to the molder is profit to the manufacturer of raw materials. Therefore, a serious program of waste reduction should be adopted”, says the author in the chapter about sustainability. Used to hearing criticisms about the environmental adequacy (or lack of it) of spray-up, Peterhans suggests ways that go beyond recycling waste. “Improve the quality of the part, not to generate tons of dust during rework. Modernize your equipment and thus reduce the emissions of volatiles into the atmosphere. And train your staff well.”

Peterhans now repeats the formula of “RTM - Resin Transfer Moulding”, his debut book released in 2012. Very attentive to minutiae, he shares his extensive experience in a didactic way. He grabs the readers by the hand and shows them how to do things. A severe teacher, whose lessons will not be forgotten anytime soon.