Hot Melt Adhesive Troubleshooting Guide – Solutions to Common Problems Part 2

Troubleshooting to common hot melt adhesive and equipment problems. 

PROBLEM: POP OPENS

POSSIBLE CAUSES:

  1. Insufficient Glue Amount
  2. Temperature Too Low 

SUGGESTED SOLUTIONS:

  1. Increase Pressure or Nozzle Size
  2. Increase Temperature

PROBLEM: SMOKE

POSSIBLE CAUSES:

  1. Temperature of Adhesive Too High 
  2. Excessive Esxposure to Air

SUGGESTED SOLUTIONS:

  1. Remove Temperature 
  2. Keep Pot Covered at All Times 

PROBLEM: SPLASHING FROM SUBSTRATE 

POSSIBLE CAUSES:

  1. Temperature of Adhesive Too High 
  2. Air Pressure Too High 
  3. Incorrect Nozzle Position

SUGGESTED SOLUTIONS:

  1. Lower Temperature  
  2. Lower Air Pressure 
  3. Change Angle of Nozzle 

PROBLEM: CHARRING OR GELLING OF ADHESIVE IN RESERVOIR

POSSIBLE CAUSES:

  1. Temperature Too High 
  2. Overheating Reservoir Walls 
  3. Faulty Heating Control 
  4. Oxidation of Adhesive 
  5. Incompatible Adhesives 

SUGGESTED SOLUTIONS:

  1. Lower Reservoir Temperature 
  2. Keep Reservoir Full of Adhesive 
  3. Check Control & Replace if Necessary 
  4. Maintain Level of Adhesive in Reservoir. Keep Reservoir Covered With Adhesive. Nitrogen Blanket May be Necessary 
  5. Change Adhesive, May Have to Flush System with Neutral Material 

Questions about adhesives? CONTACT US today and a glue expert will guide you through it! 

Leave a Reply

Your email address will not be published. Required fields are marked *