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Editorial: North America continues to be a land of opportunity
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While the North American market for years has been considered a mature market for the tire business, that doesn't mean there isn't plenty of opportunity there—particularly for firms...
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While the North American market for years has been considered a mature market for the tire business, that doesn't mean there isn't plenty of opportunity there—particularly for firms currently holding a small market share. While the North American market for years has been considered a mature market for the tire business, that doesn't mean there isn't plenty of opportunity there—particularly for firms currently holding a small market share. $While the North American market for years has been considered a mature market for the tire business, that doesn't mean there isn't plenty of opportunity there—particularly for firms currently holding a small market share.
Auto industry's uncertain future to be focus of keynote talks
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AKRON—The automotive industry is changing, and doing so rather quickly. With the advent of autonomous vehicles and ride-sharing, consumer habits and expectations are shaping the future of...
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AKRON—John McElroy and David Cole are set to deliver keynote presentatations at the Rubber in Automotive conference, being organized by Rubber & Plastics News and Freudenberg-NOK Sealing Technologies. AKRON—John McElroy and David Cole are set to deliver keynote presentatations at the Rubber in Automotive conference, being organized by Rubber & Plastics News and Freudenberg-NOK Sealing Technologies. $AKRON—John McElroy and David Cole are set to deliver keynote presentatations at the Rubber in Automotive conference, being organized by Rubber & Plastics News and Freudenberg-NOK Sealing Technologies.
New Mountain Capital acquires Gelest
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MORRISVILLE, Pa.—Growth can be quick, but sometimes, it takes patience. That's one of the reasons that led Gelest Inc. President Barry Arkles to partner this year with New Mountain Capital, ...
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MORRISVILLE, Pa.—Growth takes patience. That's one of the reasons that led Gelest President Barry Arkles to partner with New Mountain Capital, a private equity firm that currently manages approximately $15 billion in assets. MORRISVILLE, Pa.—Growth takes patience. That's one of the reasons that led Gelest President Barry Arkles to partner with New Mountain Capital, a private equity firm that currently manages approximately $15 billion in assets. $ MORRISVILLE, Pa.—Growth takes patience. That's one of the reasons that led Gelest President Barry Arkles to partner with New Mountain Capital, a private equity firm that currently manages approximately $15 billion in assets.
RMA rebrands itself as U.S. Tire Manufacturers Association
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WASHINGTON—After 102 years as the Rubber Manufacturers Association, one of the nation's oldest rubber industry association has rebranded itself as the U.S. Tire Manufacturers Association....
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WASHINGTON—After 102 years as the Rubber Manufacturers Association, one of the nation's oldest rubber industry associations has rebranded itself as the U.S. Tire Manufacturers Association. WASHINGTON—After 102 years as the Rubber Manufacturers Association, one of the nation's oldest rubber industry associations has rebranded itself as the U.S. Tire Manufacturers Association. $WASHINGTON—After 102 years as the Rubber Manufacturers Association, one of the nation's oldest rubber industry associations has rebranded itself as the U.S. Tire Manufacturers Association.
Fields retires as Ford CEO in shake-up; ex-Steelcase head named new chief
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DETROIT—Ford Motor Co., in a sweeping management shake-up, named Jim Hackett, former CEO of Steelcase Inc., as its new chief executive, replacing Mark Fields, 56, who is stepping down amid...
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DETROIT—Ford has named Jim Hackett, former CEO of Steelcase, as its new chief executive, replacing Mark Fields, who is stepping down amid pressure from shareholders over a slumping stock price. DETROIT—Ford has named Jim Hackett, former CEO of Steelcase, as its new chief executive, replacing Mark Fields, who is stepping down amid pressure from shareholders over a slumping stock price. $DETROIT—Ford has named Jim Hackett, former CEO of Steelcase, as its new chief executive, replacing Mark Fields, who is stepping down amid pressure from shareholders over a slumping stock price.
Huntsman and Clariant poised to merge
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WOODLANDS, Texas—An on-again, off-again merger of Huntsman Corp. and Clariant International Ltd. looks like it will finally come to fruition.Huntsman and Clariant announced May 22 that they ...
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WOODLANDS, Texas—An on-again, off-again merger of Huntsman and Clariant International looks like it will finally come to fruition. WOODLANDS, Texas—An on-again, off-again merger of Huntsman and Clariant International looks like it will finally come to fruition. $WOODLANDS, Texas—An on-again, off-again merger of Huntsman and Clariant International looks like it will finally come to fruition.
Wacker expands silicone production in Brazil
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JANDIRA, Brazil—Wacker Chemie A.G. is expanding its silicone production at its Jandira site near Sao Paulo in response to regional demand for specialty silicones.The 236,800-sq.-ft....
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JANDIRA, Brazil—Wacker Chemie is expanding its silicone production at its Jandira site near Sao Paulo in response to regional demand for specialty silicones. JANDIRA, Brazil—Wacker Chemie is expanding its silicone production at its Jandira site near Sao Paulo in response to regional demand for specialty silicones. $JANDIRA, Brazil—Wacker Chemie is expanding its silicone production at its Jandira site near Sao Paulo in response to regional demand for specialty silicones.
Hella uses LSR for first time in serial production headlamps
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LIPPSTADT, Germany—Liquid silicone rubber is a new player in automotive headlamps. The story of how it got there really started a couple of years ago. Back to a presentation at the VDI...
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LIPPSTADT, Germany—Liquid silicone rubber is a new player in automotive headlamps. The story of how it got there really started a couple of years ago. LIPPSTADT, Germany—Liquid silicone rubber is a new player in automotive headlamps. The story of how it got there really started a couple of years ago. $LIPPSTADT, Germany—Liquid silicone rubber is a new player in automotive headlamps. The story of how it got there really started a couple of years ago.
Goodyear scholarships, grants support STEM learning
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AKRON — In continuation of its commitment to support science, technology, engineering and math (STEM) education, Goodyear has provided $20,500 in scholarships to 20 Northeast Ohio high...
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AKRON — In continuation of its commitment to support science, technology, engineering and math (STEM) education, Goodyear has provided $20,500 in scholarships to 20 Northeast Ohio high school students and provided grants to local schools. AKRON — In continuation of its commitment to support science, technology, engineering and math (STEM) education, Goodyear has provided $20,500 in scholarships to 20 Northeast Ohio high school students and provided grants to local schools. $AKRON — In continuation of its commitment to support science, technology, engineering and math (STEM) education, Goodyear has provided $20,500 in scholarships to 20 Northeast Ohio high school students and provided grants to local schools.
Avantor, NuSil complete merger
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ANAHEIM, Calif.—NuSil Technologies L.L.C. and Avantor Performance Materials L.L.C. have completed their merger, creating an entity for which their majority private equity owner has high...
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ANAHEIM, Calif.—NuSil Technologies and Avantor Performance Materials have completed their merger, creating an entity for which their majority private equity owner has high hopes. ANAHEIM, Calif.—NuSil Technologies and Avantor Performance Materials have completed their merger, creating an entity for which their majority private equity owner has high hopes. $ANAHEIM, Calif.—NuSil Technologies and Avantor Performance Materials have completed their merger, creating an entity for which their majority private equity owner has high hopes.
Digital Edition
Digital Edition
Published on January 1, 2006

Effect of Thermal Loading and Heater Failure on Thermal Performance

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Date Published January 1, 2006
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This Report has been authored by:Eugene Ryzer at Acrolab Ltd.

The objective of this research was to compare the thermal response of standard platen and Isoplaten when they are subjected to different thermal loads and heater failures. These types of electrically heated platens are typically used in the rubber molding industry to maintain a uniform temperature distribution within the molds. The part quality in the molding process is significantly improved when the platen is operated at a uniform temperature. Previous studies have found that Isoplatens can significantly improve mold performance by eliminating hot spots and reduce cycle times. In this study, the thermal response of Isoplaten and standard heated Platen is compared in terms of their temperature distributions and thermal transient response times under different thermal loading conditions. The platen tested included heaters only. The Isoplaten tested contained same heaters and Isobars. The platens tested in this study were 457 mm x 457mm and 63 mm thick, with six 12mm diameter by 457 mm long 1000 W cartridge heaters embedded evenly along the bottom half of the platen. The platens were operated at 150°C, and the thermal loads were applied using a pre-determined amount of water to simulate the loading in a typical rubber molding application. Tests were performed with different thermal load contact areas at several locations on the platen surface. The transient temperature response of the platen and Isoplaten under the thermal load was characterized using a FLIR SC 3000 high-speed thermal imaging system. This system measured the temperature distribution of the whole platen surface to an accuracy of 0.1°C at a frame rate up to 900 frames per second. The transient and steady-state thermal performance of the platens was also characterized with different heaters turned off to characterize the performance of the platen under different failure modes. To obtain direct visualization of the temperature distribution of the heated surface at the point of loading, a hollow cylindrical cup was used to apply the water. In this concept, a hollow cylinder was placed directly on the platen and the platen surface acted as the bottom of the load ‘container’ through an o-ring seal. The infrared camera measured the surface temperature distribution within the load area once the water evaporated. This method of testing provided temperature data over the entire load area. 
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