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U.S. Department of Commerce proposes stiff tariffs on steel imports
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WASHINGTON—The U.S. Department of Commerce is recommending stiff tariffs on steel imports into the U.S., encouraging representatives of the domestic steel industry but alarming U.S. tire...
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WASHINGTON—The U.S. Department of Commerce is recommending stiff tariffs on steel imports into the U.S., encouraging representatives of the domestic steel industry but alarming U.S. tire manufacturers dependent on imported tire-grade steel cord. WASHINGTON—The U.S. Department of Commerce is recommending stiff tariffs on steel imports into the U.S., encouraging representatives of the domestic steel industry but alarming U.S. tire manufacturers dependent on imported tire-grade steel cord. $WASHINGTON—The U.S. Department of Commerce is recommending stiff tariffs on steel imports into the U.S., encouraging representatives of the domestic steel industry but alarming U.S. tire manufacturers dependent on imported tire-grade steel cord.
GM shows progress in efforts to promote sustainable rubber
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WASHINGTON—In May 2017, General Motors Co. unveiled a program to promote environmentally sound, sustainable rubber production. Representatives of the world's largest tire...
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WASHINGTON—In May 2017, General Motors unveiled a program to promote environmentally sound, sustainable rubber production. WASHINGTON—In May 2017, General Motors unveiled a program to promote environmentally sound, sustainable rubber production. $WASHINGTON—In May 2017, General Motors unveiled a program to promote environmentally sound, sustainable rubber production.
Acquisition of A. Schulman doubles LyondellBasell's annual sales, capacities
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FAIRLAWN, Ohio—Joseph Gingo grew up knowing all about A. Schulman Inc. His father worked at the company's first plant. He remembers meeting founder Alex Schulman at company picnics when he...
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FAIRLAWN, Ohio—LyondellBasell Industries is acquiring A. Schulman in a $2.25 billion deal that adds Schulman's $2.5 billion in annual sales, 54 manufacturing sites and 2.4 billion pounds of production capacity to LBI's own polypropylene compounding unit. FAIRLAWN, Ohio—LyondellBasell Industries is acquiring A. Schulman in a $2.25 billion deal that adds Schulman's $2.5 billion in annual sales, 54 manufacturing sites and 2.4 billion pounds of production capacity to LBI's own polypropylene compounding unit. $FAIRLAWN, Ohio—LyondellBasell Industries is acquiring A. Schulman in a $2.25 billion deal that adds Schulman's $2.5 billion in annual sales, 54 manufacturing sites and 2.4 billion pounds of production capacity to LBI's own polypropylene compounding unit.
U.S. demand for high-performance tires continues to rise
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AKRON—Demand for high-performance tires in the U.S. increased in 2017 for the eighth straight year and now accounts for nearly 56 percent of original equipment and 45 percent of replacement...
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AKRON—Demand for high-performance tires in the U.S. increased in 2017 for the eighth straight year, according to latest U.S. Tire Manufacturers Association data. AKRON—Demand for high-performance tires in the U.S. increased in 2017 for the eighth straight year, according to latest U.S. Tire Manufacturers Association data. $AKRON—Demand for high-performance tires in the U.S. increased in 2017 for the eighth straight year, according to latest U.S. Tire Manufacturers Association data.
LyondellBasell buying A. Schulman for $2.25 billion in big materials shakeup
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HOUSTON—In a major global plastics materials deal, LyondellBasell Industries is acquiring A. Schulman Inc. for $2.25 billion. LBI—based in Houston and London—is one of the...
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HOUSTON—In a major global plastics materials deal, LyondellBasell Industries is acquiring A. Schulman for $2.25 billion. HOUSTON—In a major global plastics materials deal, LyondellBasell Industries is acquiring A. Schulman for $2.25 billion. $HOUSTON—In a major global plastics materials deal, LyondellBasell Industries is acquiring A. Schulman for $2.25 billion.
NHS deal would help Vystar's growth
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WORCESTER, Mass.—Vystar Corp.'s letter of intent to acquire NHS Holdings L.L.C. is the first step in Vystar's plans for growth, according to Steve Rotman, founder of NHS and new CEO of...
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WORCESTER, Mass.—Vystar's letter of intent to acquire NHS Holdings is the first step in Vystar's plans for growth, according to Steve Rotman, founder of NHS and new CEO of Vystar. WORCESTER, Mass.—Vystar's letter of intent to acquire NHS Holdings is the first step in Vystar's plans for growth, according to Steve Rotman, founder of NHS and new CEO of Vystar. $WORCESTER, Mass.—Vystar's letter of intent to acquire NHS Holdings is the first step in Vystar's plans for growth, according to Steve Rotman, founder of NHS and new CEO of Vystar.
Wacky World of Rubber: 'Why didn't I think of that?'
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I'm dedicating this installment of Wacky World of Rubber to all of those who have said, "Why didn't I think of that?" This is the success story of a family-owned company out of Saint George, Utah,...
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I'm dedicating this installment of Wacky World of Rubber to all of those who have said, "Why didn't I think of that?" This is the success story of a family-owned company named Squatty Potty, which has gained a cult-like following for its signature product. I'm dedicating this installment of Wacky World of Rubber to all of those who have said, "Why didn't I think of that?" This is the success story of a family-owned company named Squatty Potty, which has gained a cult-like following for its signature product. $I'm dedicating this installment of Wacky World of Rubber to all of those who have said, "Why didn't I think of that?" This is the success story of a family-owned company named Squatty Potty, which has gained a cult-like following for its signature product.
RD Abbott printer helps cut the prototyping process
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CERRITOS, Calif.—R.D. Abbott Co. Inc. is looking to help spread the word in North America about the liquid silicone rubber 3D printing technology developed by German RepRap GmbH and Dow...
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CERRITOS, Calif.—R.D. Abbott is looking to help spread the word in North America about the liquid silicone rubber 3D printing technology developed by RepRap and Dow Performance Silicones. CERRITOS, Calif.—R.D. Abbott is looking to help spread the word in North America about the liquid silicone rubber 3D printing technology developed by RepRap and Dow Performance Silicones. $CERRITOS, Calif.—R.D. Abbott is looking to help spread the word in North America about the liquid silicone rubber 3D printing technology developed by RepRap and Dow Performance Silicones.
Bridgestone, Versalis form strategic partnership
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NASHVILLE, Tenn.—Bridgestone Americas Inc. is forming a strategic partnership with Italian polymer and elastomer giant Versalis S.p.A. to  to develop and use a comprehensive technology...
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NASHVILLE, Tenn.—Bridgestone Americas is forming a strategic partnership with Italian polymer and elastomer giant Versalis to develop and use a comprehensive technology package to commercialize guayule in the agricultural, sustainable rubber and renewable chemical sectors. NASHVILLE, Tenn.—Bridgestone Americas is forming a strategic partnership with Italian polymer and elastomer giant Versalis to develop and use a comprehensive technology package to commercialize guayule in the agricultural, sustainable rubber and renewable chemical sectors. $NASHVILLE, Tenn.—Bridgestone Americas is forming a strategic partnership with Italian polymer and elastomer giant Versalis to develop and use a comprehensive technology package to commercialize guayule in the agricultural, sustainable rubber and renewable chemical sectors.
Export curbs fail to lift natural rubber prices
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LONDON—Moves to curb natural rubber exports by the main producing countries seem to have had little positive impact on prices for the commodity, so far at least.Indeed, prices showed signs...
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LONDON—Moves to curb natural rubber exports by the main producing countries seem to have had little positive impact on prices for the commodity, so far at least. LONDON—Moves to curb natural rubber exports by the main producing countries seem to have had little positive impact on prices for the commodity, so far at least. $LONDON—Moves to curb natural rubber exports by the main producing countries seem to have had little positive impact on prices for the commodity, so far at least.
Digital Edition
Digital Edition
Published on September 22, 2004

COMPONENT INTERFACIAL TEARING APPEARANCES

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Date Published September 22, 2004
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The appearance of pattern marks, die lines and liner marks has been and continues to be an issue of contention in the realm of forensic tire analysis. These conditions have been recognized for many years and there is no dispute whatsoever that they exist. The differences in opinion center on the question of what these conditions mean in terms of a tire’s structural integrity. Do they reflect some anomaly or defect that occurs somewhere in the manufacturing process, or are they a reflection of some design deficiency that occasionally manifests itself after the tire is placed in service? Allegations such as these are sometimes used as the basis for liability claims against the tire manufacturer. On the other hand, could the appearance of these conditions be the result of some abnormal service conditions that contribute to the tire’s demise? The research that I will be discussing gives us factual information that we can use as a basis for answering these questions. 
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