Product category:
Materials and components
News Release from: RTP Company | Subject: RTP 100 glass fibre reinforced polypropylene
Edited by the Engineeringtalk Editorial
Team on 15 April 2008
Thermoplastic elastomer suits versatile
umbrella
RTP Company formulated a custom RTP 100 series glass fibre reinforced polypropylene compound to withstand the tremendous pressure when the lever locks down the handle to create surface suction.
When Too Kool Recreation of Fort Mohave, Arizona, wanted to develop a portable shade system that would allow a canopy umbrella to stand anywhere, even in a swimming pool, they chose a high-impact compound and a thermoplastic elastomer (TPE) from RTP Company to make their Kool Klamp design successful In a swimming pool, the rustproof Kool Klamps attach an 2.4m diameter umbrella to the smooth underwater wall surface of a swimming pool
This article was originally published on Engineeringtalk on 23 Oct 2001 at 8.00am (UK)
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By pushing the suction pads against the side of the pool, then pushing the levers down flat, the clamps create a hold that lasts for hours.
Constructing the Kool Klamp's suction cup, without metal screws or pins in the pivot points, was a challenge for multishot moulder, Rolco, a Minnesota-based moulder which specialises in dual-material components.
Two dissimilar thermoplastics were used for the design - a structural compound for the locking lever and pivot points and a TPE to form the flexible, yet sturdy cup.
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For the structural component, RTP Company formulated a custom RTP 100 series glass fibre reinforced polypropylene compound to withstand the tremendous pressure when the system's lever locks down the handle to create surface suction.
For the cup, an RTP 2000 series TPE alloy with a Shore A hardness of 60 was modified with a UV stabiliser to meet environmental demands.
"The UV stabiliser was necessary because it may be attached to vehicle fenders and other smooth surfaces outdoors where ultraviolet rays can deteriorate the product over time", said Rob Hood of Too Kool Recreation.
According to Hood, "RTP company had the engineering staff and the flexibility to identify the right combination of materials and they took the initiative to formulate the compounds for the entire project".
"They made our programme a priority, from the first sales call through the development group".
Both moulding technique and material selection were essential to the success of the Kool Klamp, which has been expanded into other products such as the Too Kool Volleyball Set and industrial utility applications.
Rolco's advanced multishot moulding capabilities ensured a mechanical and chemical bond between the TPE and glass-reinforced compounds, while RTP company provided an in-depth understanding of how the selection of both TPE and rigid substrate affects bond strength.
"RTP company not only helped us identify the right materials for the job, but also tested the outcome in their lab", added Hood.
"They came up with the right solution and did it on time".
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