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Shelf life of injection molded plastic components
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Shelf life of injection molded plastic components
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  Post Number #1  
Old 17th June 2009, 12:47 AM
rameshs_10377

 
 
Total Posts: 13
Please Help! Shelf life of injection molded plastic components

Hi


We've a injection mold plastic components in store , which are stored from past 10 months.

while reinspecting these components found yellow patches ( looks flow line ) more visible than earlier .due this we are unable to use the stock for production which is very expensive

to take preventive action for future supplies , request you please let me know maximum storage( shelf life ) of plastic components

I need to define the shelf life ( storage ) for these components

regards

Ramesh

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  Post Number #2  
Old 17th June 2009, 12:55 AM
Stijloor's Avatar
Stijloor

 
 
Total Posts: 15,339
Re: Shelf life of injection molded plastic components

Quote:
In Reply to Parent Post by rameshs_10377 View Post

Hi


We've a injection mold plastic components in store, which are stored from past 10 months.

while reinspecting these components found yellow patches ( looks flow line ) more visible than earlier .due this we are unable to use the stock for production which is very expensive

to take preventive action for future supplies , request you please let me know maximum storage( shelf life ) of plastic components

I need to define the shelf life (storage) for these components

regards

Ramesh
Ramesh,

What is the material used for these components?

Would Preventive Action in your case be the prevention of flow lines?

Stijloor.
  Post Number #3  
Old 17th June 2009, 01:29 AM
rameshs_10377

 
 
Total Posts: 13
Re: Shelf life of injection molded plastic components

Hi Stijloor.


Thanks for reply
Please find the comments in Blue

What is the material used for these components?

Noryl SE90

Would Preventive Action in your case be the prevention of flow lines?

Yes and i need to fix this problem at manufacturer end


Ramesh
  Post Number #4  
Old 25th June 2009, 04:33 PM
world quality's Avatar
world quality

 
 
Total Posts: 240
Yin Yang Re: Shelf life of injection molded plastic components

Remember, go back to your source for your plastics.
1. This depends on what type of plastic it is.

2. Lab Certifications of plastics

3. Did you ask the supplier of pellets, after molding what is the shelf life
When formed.

4. What type of environment are you storing it in. (hot, cold, damp, etc.)
Depending on what type of plastic and its environment.
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