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Volume One, Number Seven
July 8, 2003
Greetings fellow rotomolding fans! You subscribed to our newsletter while reviewing our Web site, modroto.com. This issue offers new information to help design engineers, product managers and others benefit from plastics. Email me with questions and comments. If you need to unsubscribe, scroll down for instructions.
Now boldly mold!
For more information, contact Meese Orbitron Dunne Co., American Rotational Molding Group; 16404 Knott Ave., La Mirada, CA 90638; Phone: 888.724.1228; Fax: 877.904.1670; www.modroto.com.
DESIGNING FOR POOL, CHEMICAL SAFETY
One of our customers wanted to expand its pool/spa product line with a self-metering chlorinator in time for the spring selling season. We assessed their initial design and confirmed it would likely fail in operation, which means fire, explosion, painful chlorine burns and costly pool closings.
The flaw? A series of plastic plates molded into the polyethylene walls. They had been intended to shore up the walls against high pressures up to 30 psi but they instead created several weak points that would rupture during operation. MOD redesigned the chlorinator as a one-piece, rotationally molded, polyethylene unit. This stronger design eliminated the need for the plates and passed a 44 psi water test. Now it can safely supply a constant concentration of chlorine and the chemical company has been able to use the new chlorinator to sell more chlorine.
For details and a color picture, see http://www.modroto.com/didit.htm
Tell us about your project and get a free estimate at http://www.modroto.com/cgi-bin/request
YOU, TOO, CAN DESIGN FOR ROTOMOLDING
#1 In A Series
Sure, the creative opportunities are endless but if you take full advantage of the strengths of rotomolding, you'll reap even greater rewards in cost savings and product appearance. For example:
Rotomolding excels in producing seamless, complex parts in a single piece for superior strength and reduced component count. Yet, designers who consider where the parting line is located on the part can be sure it's hidden from view when the part is in use. The parting line is a smooth line that forms where the tooling closes around the part.
For more about tooling design and costs, see here
Tell us about your project and get a free estimate at http://www.modroto.com/cgi-bin/request
FINALLY, A POOL VOLLEYBALL GAME THAT WON'T FALL INTO THE WATER
Pool volleyball is safer than ever. We designed the Spike-N-Splash volleyball for our Pool Shot ProductsTM division with two, rugged polyethylene bases that each hold up to 50 gallons of water (or sand!). With the net attached to one on each side of the pool, they create stable platforms that virtually anchor to the deck. Even falling into the net after a spike can't move these bases.
For details and color pictures, see http://www.poolshot.com/swv.html
Adventures In Rotomolding is published by Meese Orbitron Dunne Co., Saddle Brook, NJ, http://www.modroto.com; 800.829.3230. Copyright 2003 Meese, Inc. May not be reprinted without permission. Please feel free to pass along to other engineers and colleagues.
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