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Environmental study of nylon flocking process.

J Burkhart1, C Piacitelli, D Schwegler-Berry

  • 1National Institute for Occupational Safety and Health, Division of Respiratory Disease Studies, Morgantown, West Virginia 26505-2888, USA.

Journal of Toxicology and Environmental Health. Part A
|May 13, 1999
PubMed
Summary

Environmental measurements show particulate matter is the primary exposure in nylon flocking. Highest levels, including nylon shreds, occurred during cleaning procedures like blowdown.

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Area of Science:

  • Occupational Health
  • Environmental Science
  • Materials Science

Background:

  • The nylon flocking process involves potential exposure to various airborne agents.
  • Characterizing these exposures is crucial for worker safety and environmental monitoring.

Purpose of the Study:

  • To quantify and identify airborne exposures, particularly particulate matter, during the nylon flocking process.
  • To investigate the composition and origin of airborne particles, with a focus on nylon fibers and shreds.

Main Methods:

  • Environmental measurements of gas, particulate, and microbiological agents.
  • Air sampling and analysis using polarized light microscopy and scanning electron microscopy.
  • Melting-point determination for particle identification.

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Main Results:

  • Particulate matter was the predominant exposure, with total particulate levels ranging from 0.1 to 240 mg/m³.
  • Respirable particulate levels averaged 2.2 mg/m³, with highest concentrations in the flocking room.
  • Airborne particles included nylon flock fibers and respirable nylon shreds, identified through microscopy and melting-point analysis.

Conclusions:

  • The nylon flocking process generates significant particulate exposures, primarily composed of nylon fibers and shreds.
  • Peak exposures are associated with cleaning procedures such as 'blowdown'.
  • Understanding particle composition is key to managing occupational health risks in this industry.