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Repairing Plastics in the Field

3/4/2015

 
Repairing an object in the field adds several complexities to the welding process. Below are some tips to help you get a strong weld that will stand the test of time.

  • Determine plastic type
    • It is important to determine the plastic type before gathering supplies
    • Look for a recycling symbol or do a flame test
    • Use welding rod made of the same type of plastic
    • If welding rod is unavailable or you cannot determine the plastic type, welding rod can be made from a duplicate object that is beyond repair
  • Clean and dry the surface well
    • Remove all water, oil, dirt, or other contaminants 
  • A crack may have to be notched so that there is a “V” to create surface area for the weld
    • Straight flat edges that butt together will not give a weld with good mechanical strength
  • Immediately before welding scrape away the top layer of plastic to remove oxidization 
  • Secure object to stable surface to minimize movement or put reinforcing tape on the back side to prevent two welding surfaces from moving relative to each other
  • If possible, work in a sheltered area away from wind which could cool the weld too quickly

Have questions? Contact your Technical Sales Representative for help. 

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  • Home
  • Equipment Supply
    • Flooring
    • Geomembrane
    • Industrial Fabrics
    • Manufacturing
    • Plastic Fabrication
    • Roofing >
      • Distributors
  • Engineering Services
    • Engineering Services
    • Cosmetics
    • Deflashing Systems
    • Drying Bottles & Cans
    • Heat Systems
    • Shrinking Labels
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    • Repair Service
    • Tech Tips
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    • Articles
    • Case Studies
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