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Analytics firm said LT tires led sluggish 2017 U.S. replacement market
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NEW YORK—Despite a unit sales decline of 3.1 percent last year, light truck tires led a sluggish U.S. consumer tire market in 2017 vs. 2016, according to the latest data issued by analytics...
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NEW YORK—Despite a unit sales decline last year, light truck tires led a sluggish U.S. consumer tire market in 2017 vs. 2016, according to the latest data issued by analytics firm GfK Group. NEW YORK—Despite a unit sales decline last year, light truck tires led a sluggish U.S. consumer tire market in 2017 vs. 2016, according to the latest data issued by analytics firm GfK Group. $NEW YORK—Despite a unit sales decline last year, light truck tires led a sluggish U.S. consumer tire market in 2017 vs. 2016, according to the latest data issued by analytics firm GfK Group.
Surge in business is a boon for commercial vehicle industry
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The commercial vehicle industry is enjoying a surge in business as the U.S. economy grows, construction projects increase and consumers buy more merchandise. For now, "trucking is enjoying a very...
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The commercial vehicle industry is enjoying a surge in business as the U.S. economy grows, construction projects increase and consumers buy more merchandise. The commercial vehicle industry is enjoying a surge in business as the U.S. economy grows, construction projects increase and consumers buy more merchandise. $The commercial vehicle industry is enjoying a surge in business as the U.S. economy grows, construction projects increase and consumers buy more merchandise.
Michelin debuts new high-performance adhesive
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CLERMONT-FERRAND, France—Michelin will be leaving an old industry standard behind with some of its lines of tires later this year. After more than nine years of research and development,...
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CLERMONT-FERRAND, France—After more than nine years of research and development, Michelin is launching a new high-performance resin adhesive designed for bonding textiles. CLERMONT-FERRAND, France—After more than nine years of research and development, Michelin is launching a new high-performance resin adhesive designed for bonding textiles. $CLERMONT-FERRAND, France—After more than nine years of research and development, Michelin is launching a new high-performance resin adhesive designed for bonding textiles.
A. Schulman sets June meeting to vote on merger
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FAIRLAWN, Ohio—A. Schulman Inc. has set June 14 as the date for a special meeting for shareholders to vote on a merger agreement with global plastics, chemicals and refining company...
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FAIRLAWN, Ohio—A. Schulman has set June 14 as the date for a special meeting for shareholders to vote on a merger agreement with global plastics, chemicals and refining company LyondellBasell. FAIRLAWN, Ohio—A. Schulman has set June 14 as the date for a special meeting for shareholders to vote on a merger agreement with global plastics, chemicals and refining company LyondellBasell. $FAIRLAWN, Ohio—A. Schulman has set June 14 as the date for a special meeting for shareholders to vote on a merger agreement with global plastics, chemicals and refining company LyondellBasell.
Tekni-Plex expands medical portfolio with Dunn Industries acquisition
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WAYNE, Pa.—Tekni-Plex Inc. is expanding its capabilities in specialty extruded medical tubing by acquiring Dunn Industries Inc. Financial details were not disclosed, but Tekni-Plex said the ...
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WAYNE, Pa.—Tekni-Plex is expanding its capabilities in specialty extruded medical tubing by acquiring Dunn Industries. WAYNE, Pa.—Tekni-Plex is expanding its capabilities in specialty extruded medical tubing by acquiring Dunn Industries. $WAYNE, Pa.—Tekni-Plex is expanding its capabilities in specialty extruded medical tubing by acquiring Dunn Industries.
Raw material prices still volatile
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WASHINGTON—Volatility in raw materials prices for tires and rubber goods has moderated since last year, but is far from gone, according to manufacturers and industry analysts. Tire...
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WASHINGTON—Volatility in raw materials prices for tires and rubber goods has moderated since last year, but is far from gone, according to manufacturers and industry analysts. WASHINGTON—Volatility in raw materials prices for tires and rubber goods has moderated since last year, but is far from gone, according to manufacturers and industry analysts. $WASHINGTON—Volatility in raw materials prices for tires and rubber goods has moderated since last year, but is far from gone, according to manufacturers and industry analysts.
Bridgestone, Goodyear to create 50/50 wholesale venture
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AKRON—Bridgestone Americas and Goodyear are combining their respective wholesale tire distribution assets into a 50/50 joint venture, called TireHub L.L.C., that will operate through 80-...
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AKRON—Bridgestone Americas and Goodyear are combining their respective wholesale tire distribution assets into a 50/50 joint venture, called TireHub, that will operate through 80-plus distribution centers nationwide. AKRON—Bridgestone Americas and Goodyear are combining their respective wholesale tire distribution assets into a 50/50 joint venture, called TireHub, that will operate through 80-plus distribution centers nationwide. $AKRON—Bridgestone Americas and Goodyear are combining their respective wholesale tire distribution assets into a 50/50 joint venture, called TireHub, that will operate through 80-plus distribution centers nationwide.
Impact of steel tariffs looms over industry
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WASHINGTON—Tire manufacturers still are assessing the possible effects of 25 percent tariffs on tire-quality steel wire rod imports to the U.S., but all indications are that the impact...
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WASHINGTON—Tire manufacturers still are assessing the possible effects of 25 percent tariffs on tire-quality steel wire rod imports to the U.S., but all indications are that the impact could be sweeping. WASHINGTON—Tire manufacturers still are assessing the possible effects of 25 percent tariffs on tire-quality steel wire rod imports to the U.S., but all indications are that the impact could be sweeping. $WASHINGTON—Tire manufacturers still are assessing the possible effects of 25 percent tariffs on tire-quality steel wire rod imports to the U.S., but all indications are that the impact could be sweeping.
Photo gallery: Ace shows off expansion
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RAVENNA, Ohio—At Ace Products and Consulting's open house on April 12, visitors showed up to see the facility after the company finished its most recent expansion. Ace added 3,500 square...
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RAVENNA, Ohio—At Ace Products and Consulting's open house on April 12, visitors showed up to see the facility after the company finished its most recent expansion. RAVENNA, Ohio—At Ace Products and Consulting's open house on April 12, visitors showed up to see the facility after the company finished its most recent expansion. $RAVENNA, Ohio—At Ace Products and Consulting's open house on April 12, visitors showed up to see the facility after the company finished its most recent expansion.
Continental developing aquaplaning warning system
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FRANKFURT, Germany—Continental A.G. engineers are developing an aquaplaning alert system that uses signals from surround-view cameras and tire-mounted electronic sensors to warn the...
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FRANKFURT, Germany—Continental engineers are developing an aquaplaning alert system that uses signals from surround-view cameras and tire-mounted electronic sensors to warn the vehicle's driver and engage active stabilization measures. FRANKFURT, Germany—Continental engineers are developing an aquaplaning alert system that uses signals from surround-view cameras and tire-mounted electronic sensors to warn the vehicle's driver and engage active stabilization measures. $FRANKFURT, Germany—Continental engineers are developing an aquaplaning alert system that uses signals from surround-view cameras and tire-mounted electronic sensors to warn the vehicle's driver and engage active stabilization measures.
Digital Edition
Digital Edition
Published on January 1, 2007

Flash Free Molding and Reduced Cycle Time by Using In-Mold Rheological Control Systems

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Date Published January 1, 2007
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This Report has been authored by:David M.c Rose at Beaumont Technologies Inc.

Many common production problems result because of non-uniform viscosities that naturally develop through the cross-sections of the runner system as rubber flows from the injection molding machine through the mold. These non-uniform material properties create many problems for molders including excessive flash on the cavities first to fill as well as a significant disparity in cure rates between cavity groups. Therefore, to maximize the efficiency of an injection mold and to minimize post-molding labor, it is imperative to control the material properties as the rubber flows from the injection molding machine through the mold. This cannot be accomplished at the injection molding machine because, during filling and packing, the machine control is limited to linear speed control of the advancing plunger or screw. Consequently, the machine has limited influence on the material properties and limited control on pressure development within each cavity. However, these non-uniform material properties can be controlled within the mold's runner system and evenly, or otherwise, distributed within the mold cavities by implementing in-mold rheological control systems. Controlling the material conditions can eliminate flash, reduce the cure time difference between cavities, improve part quality, and widen the process window to ensure the mold runs at peak manufacturing efficiencies. This paper will explain why non-uniform material properties develop as it flows and how patented rheological control systems work, explaining the various types of systems and discussing the many benefits of implementing these systems into a mold's runner system so that balanced material properties are delivered to each cavity, controlling the melt property distribution within the cavities. 
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