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Accelerating concrete curing is achieved by applying heat and additional moisture. This process accelerates the hydration of the cement, resulting in an earlier strength gain in the concrete. Steam curing is a method wherein the concrete products are either transported through a chamber on a conveyor belt or encased in plastic, allowing steam at atmospheric pressure to circulate freely around them. This process begins with a phase of moist curing that typically lasts between 3 to 5 hours, after...
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Controlled Acceleration of Intaglio Ink Curing via Encapsulated Additives.

Allison F Moyer1, Doug Trigg1, Michael A Berkson1

  • 1Research and Exploratory Development Department, The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Rd Laurel, Laurel, Maryland 20723, United States.

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Summary
This summary is machine-generated.

This study introduces microcapsules containing organic peroxides to accelerate intaglio printing ink drying. This innovation halves drying times, preventing smearing and improving print quality without disrupting current infrastructure.

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Area of Science:

  • Chemical Engineering
  • Materials Science
  • Printing Technology

Background:

  • Intaglio printing relies on oxidative ink drying, which takes days and causes smearing.
  • Directly adding oxidants to ink leads to premature curing, reducing print quality and damaging equipment.

Purpose of the Study:

  • To develop a method for controlled, on-demand acceleration of intaglio ink drying.
  • To improve printing efficiency and reduce post-print defects like smearing.

Main Methods:

  • Microencapsulation of organic peroxides designed to rupture under printing pressure.
  • Incorporation of these accelerant-loaded microcapsules into intaglio inks.

Main Results:

  • Microcapsules release peroxides upon mechanical stress during printing.
  • Achieved a 50% reduction in intaglio ink drying time.
  • Demonstrated compatibility with existing printing infrastructure.

Conclusions:

  • Microcapsule technology offers a viable solution for rapid intaglio ink drying.
  • This method enhances print quality by preventing smearing and reducing drying duration.
  • The technology is easily integrated into current industrial printing processes.