Annealing HDPE Bottles

Stop giving your product away!

model 50 bottle annealing unit

Click image to watch short video.
Contact Dyco for access to full length video.

For over two decades, Dyco has helped manufactures extended control over the natural cure time of bottles.  The process of annealing a bottle completes bottle cure immediately after blow molding containers. This controlled stabilization means bottle volume is consistent with the mold design, and bottles can be sent directly to the filler, surged or bagged-off to storage without concern for further volume changes.

Why Choose Dyco

  • With over 300 installed systems, Dyco is the leader in annealing HDPE containers
  • Dyco not only installs the unit, we also understand how to implement it and train your staff on proper set-up and bottle annealing operation to keep your volumes consistent
  • Consistent annealing of HDPE containers by using precision controls and belt speed feedback, temperature stays within 1 degree



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Model 50 Bottle Annealing Unit

model 50 annealing tunnel

Click image to watch short video.
Contact Dyco for access to full length video.

Why Choose Dyco

  • Consistent volume control provided by using highly accurate speed and temperature controls
  • Stainless steel construction water cooled neck rails to protect necks from ovalization
  • Safe operation with integrated safety bottle blow-off system to ensure no containers back-up into heated annealing tunnel


model 50 annealing tunnel

Model 50 installed overhead

Model 50 control box

Model 50 control box


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Model 51 Bottle Annealing Unit

Model 51 Bottle Annealing Unit installed overhead

Click image to watch short video.
Contact Dyco for access to full length video.

As blow molding containers and trimming technology has improved over the years, dairy bottle blow molding container speeds have increased. To meet this need of increased speeds, Dyco developed the Model 51 Bottle Annealing Unit for speeds over 50 dairy gallons per minute.

Why Choose Dyco

  • Precision temperature and speed control to achieve consistent annealing and volume control
  • Standard water cooled neck and side rails to protect the neck threads for capping
  • Integrated safety detection and shutdown


Model 51 Bottle Annealing Unit installed overhead

Model 51 Annealing Unit installed overhead

Model 51 Control Box

Model 51 Control Box

Model 51 Annealing Unit shown with optional floor stand

Model 51 Annealing Unit shown with optional floor stand


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Volumetric Training on Bottle Annealing

Volumetric Training on Bottle Annealing

Dyco trains and instructs in the physical operation of your bottle annealing units as well as in the technology of bottle annealing. Together, Dyco and plant personnel establish the testing procedures and volume tolerances for system management. Personnel technically proficient in blow molding containers can, with experienced trainers, assimilate bottle annealing into the manufacturing process.

Why Choose Dyco

  • Comprehensive training by a Dyco Service Engineer with years of experience in applying the bottle annealing process
  • Training includes additional tools to assist in the volumetric testing process
  • Instruction and assistance can be given on one unit or multiple units


bottle annealing training provides best practices and tips

Bottle annealing training provides best practices and tips.

sample shrink curves from bottle annealing

Sample Shrink Curves from Volumetric Analysis


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