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5 years 3 weeks ago #2876 by Ms Ali Hosseini
ADR / DDR was created by Ms Ali Hosseini

i'm looking forward to designing tools
i have some questions ,i would be really thankful if u answers them

about Area Drawdown ratio:

is Area Drawdown equal to Shrinkage factor of plastics?

if yes what is the relation between ADR and Shrinkage factor?

for example if the shrinkage factor for PVC is 3% then what is PVC ADR?

-were can i find the ADR/DDR for different plastic material?

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5 years 3 weeks ago - 5 years 2 weeks ago #2884 by Peter J Stewart-Hay
Replied by Peter J Stewart-Hay on topic ADR / DDR
Hello Ms Ali Hosseini,

Please read and carefully understand these two web pages:


Shrinkage is an entirely different subject.

Talk with various polymer suppliers to obtain their recommended DDRs

Thank you.

Peter J. Stewart-Hay Principal
Stewart-Hay Associates
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Last edit: 5 years 2 weeks ago by Peter J Stewart-Hay.

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