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Green tire demand prompts silica growth
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As global demand for low rolling-resistance tires continues to grow, silica firms are responding in kind with capacity expansions. Precipitated silica is seeing an average annual growth rate in...
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As global demand for low rolling-resistance tires continues to grow, silica firms are responding in kind with capacity expansions. As global demand for low rolling-resistance tires continues to grow, silica firms are responding in kind with capacity expansions. $As global demand for low rolling-resistance tires continues to grow, silica firms are responding in kind with capacity expansions.
Guizhou Tyre to build new plant in Vietnam
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GUIYANG, China—Guizhou Tyre Co. Ltd., producer of the Advance and Samson brands, is planning to build a truck and bus tire plant in Vietnam valued at $245 million, according to a regulatory ...
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GUIYANG, China—Guizhou Tyre, producer of the Advance and Samson brands, is planning to build a truck and bus tire plant in Ho Chi Minh City, Vietnam. GUIYANG, China—Guizhou Tyre, producer of the Advance and Samson brands, is planning to build a truck and bus tire plant in Ho Chi Minh City, Vietnam. $GUIYANG, China—Guizhou Tyre, producer of the Advance and Samson brands, is planning to build a truck and bus tire plant in Ho Chi Minh City, Vietnam.
Rubber Division opens spring meeting
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BEACHWOOD, Ohio—A keynote address and the 25-Year Club countdown to the person with the most years in the rubber industry highlighted the first day of the ACS Rubber Division's spring...
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BEACHWOOD, Ohio—A keynote address and the 25-Year Club countdown to the person with the most years in the rubber industry highlighted the first day of the ACS Rubber Division's spring technical meeting. BEACHWOOD, Ohio—A keynote address and the 25-Year Club countdown to the person with the most years in the rubber industry highlighted the first day of the ACS Rubber Division's spring technical meeting. $BEACHWOOD, Ohio—A keynote address and the 25-Year Club countdown to the person with the most years in the rubber industry highlighted the first day of the ACS Rubber Division's spring technical meeting.
Food waste emerges as possible rubber filler
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WOOSTER, Ohio—Eggshells and other food waste may be the next phase of sustainable manufacturing practices for the tire and rubber product industry, as a replacement for carbon black....
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WOOSTER, Ohio—Eggshells and other food waste may be the next phase of sustainable manufacturing practices for the tire and rubber product industry, as a replacement for carbon black. WOOSTER, Ohio—Eggshells and other food waste may be the next phase of sustainable manufacturing practices for the tire and rubber product industry, as a replacement for carbon black. $WOOSTER, Ohio—Eggshells and other food waste may be the next phase of sustainable manufacturing practices for the tire and rubber product industry, as a replacement for carbon black.
American Biltrite project starts to pay off
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SAN ANTONIO—It's taken some patience and education, but American Biltrite (Canada) Ltd. finally is seeing business growth from a project it's been working on for more than three years. The...
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SAN ANTONIO—It's taken some patience and education, but American Biltrite finally is seeing business growth from a project it's been working on for more than three years. SAN ANTONIO—It's taken some patience and education, but American Biltrite finally is seeing business growth from a project it's been working on for more than three years. $SAN ANTONIO—It's taken some patience and education, but American Biltrite finally is seeing business growth from a project it's been working on for more than three years.
Supreme Court reverses damage award against Goodyear
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WASHINGTON—In an 8-0 decision, the U.S. Supreme Court reversed and remanded a $2.74 million damage award against Goodyear and two attorneys who represented the tire maker in a product...
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WASHINGTON—In an 8-0 decision, the U.S. Supreme Court reversed and remanded a $2.74 million damage award against Goodyear and two attorneys who represented the tire maker in a product liability lawsuit. WASHINGTON—In an 8-0 decision, the U.S. Supreme Court reversed and remanded a $2.74 million damage award against Goodyear and two attorneys who represented the tire maker in a product liability lawsuit. $WASHINGTON—In an 8-0 decision, the U.S. Supreme Court reversed and remanded a $2.74 million damage award against Goodyear and two attorneys who represented the tire maker in a product liability lawsuit.
Cabot invests to upgrade Malaysia facility
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BOSTON—Cabot Corp.'s stake in the elastomer composite market, with a heavy focus on tire and industrial rubber products, is growing. The global specialty chemicals and performance materials ...
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BOSTON—Cabot is making a strategic investment to expand and upgrade its manufacturing capabilities for elastomer composites at its plant in Port Dickson, Malaysia. BOSTON—Cabot is making a strategic investment to expand and upgrade its manufacturing capabilities for elastomer composites at its plant in Port Dickson, Malaysia. $BOSTON—Cabot is making a strategic investment to expand and upgrade its manufacturing capabilities for elastomer composites at its plant in Port Dickson, Malaysia.
NAM honors U.S. senator for his support of manufacturing
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AKRON—The National Association of Manufacturers recognized U.S. Sen. Rob Portman, R-OH, with the NAM Award for Manufacturing Legislative Excellence, which was presented during an ceremony at ...
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AKRON—The National Association of Manufacturers recognized U.S. Sen. Rob Portman, R-OH, with the NAM Award for Manufacturing Legislative Excellence. AKRON—The National Association of Manufacturers recognized U.S. Sen. Rob Portman, R-OH, with the NAM Award for Manufacturing Legislative Excellence. $AKRON—The National Association of Manufacturers recognized U.S. Sen. Rob Portman, R-OH, with the NAM Award for Manufacturing Legislative Excellence.
Cheng Shin set to open two tire plants
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CHUNGHWA, Taiwan — Cheng Shin Rubber Industrial Co. Ltd.'s new plants in India and Indonesia will start production this year, the Taiwanese tire maker disclosed at its recent investor...
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CHUNGHWA, Taiwan—Cheng Shin, which goes to market under the Maxxis brand, is ready to start up its new plants in India and Indonesia. CHUNGHWA, Taiwan—Cheng Shin, which goes to market under the Maxxis brand, is ready to start up its new plants in India and Indonesia. $CHUNGHWA, Taiwan—Cheng Shin, which goes to market under the Maxxis brand, is ready to start up its new plants in India and Indonesia.
USW files complaint regarding China truck, bus tire decision
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WASHINGTON—The United Steelworkers has filed a complaint with the U.S. Court of International Trade seeking judicial review of the U.S. International Trade Commission's recent negative...
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WASHINGTON—The United Steelworkers has filed a complaint with the U.S. Court of International Trade seeking judicial review of the U.S. International Trade Commission's recent negative determination in the ITC's investigation of truck and bus tires from China. WASHINGTON—The United Steelworkers has filed a complaint with the U.S. Court of International Trade seeking judicial review of the U.S. International Trade Commission's recent negative determination in the ITC's investigation of truck and bus tires from China. $WASHINGTON—The United Steelworkers has filed a complaint with the U.S. Court of International Trade seeking judicial review of the U.S. International Trade Commission's recent negative determination in the ITC's investigation of truck and bus tires from China.
Digital Edition
Digital Edition
Published on March 25, 2013

Detecting and measuring hot blisters in tires

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Date Published March 25, 2013
Category Technical Papers

Dennis Reynolds, Starrett-Bytewise Division of L.S. Starrett Co.

A hot blister is a bulge in the surface of a cured tire caused by entrapped gasses or steam. Such blisters can be observed in the hot tires when they exit curing. Blisters often shrink as the gases migrate outward or are absorbed into the tire materials. There is concern, however, that the entrapped steam and gases present during curing can weaken the laminate structure of the tire. Air entrapment has been observed frequently by the author during capability studies conducted on tire-building machines. This paper presents cases showing entrapped air between the inner liner and body ply in a typical green tire carcass construction. Such air pockets can remain between the layers and migrate outward during tire curing to produce blisters. Air can also be absorbed into the tire structure. Steam and gases also can be introduced into the tire structure during curing and emerge as blisters after curing. This paper presents a method to detect blisters after curing and to detect entrapped air pockets during the tire-building stage. Scans of both cases are presented. These cases demonstrate that automatic monitoring systems can be implemented to detect these conditions. The method uses high-speed line laser sensors to digitize the sidewall and/or tread of the un-inflated tire. The data set is rendered as a 3D model. The data is post-processed and searched for blisters. This same sensor technology is employed to scan tire sidewalls for bulges and depressions.

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Technical Paper, Detecting and Measuring Hot Blisters in Tires
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