Checklist to Audit an Injection Molding Process needed

hansin

Starting to get Involved
#1
I'll audit a new supplier recently,so need a a checklist/Audit of the injection molding process! THS
 
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harry

Super Moderator
#2
Re: HELP! I need a checklist to Audit the injection molding process!

Check the two threads related to blow/injection molding in the similar discussions box below the page (just scroll down the page).

Arios gave good advice in this post: Injection / Blow Molding Process Evaluation.

a) A verification of the process parameters like temperature, pressure, drying process vs. local defined requirements
b) Proper identification and segregation of raw materials (resins, colorants) and I compare them vs. the Bill of Materials and also check how their proportions are controlled (e.g. by weight)
c) Inspection process. How the parts are released. Which dimensions are critical and how they are measured
d) How do they call out some defects like short shots, flash, gate vestige, discoloration
e) Preventive Maintenance records, frequency. Mold maintenance
f) If any cavity or more have been "plugged" or "blocked" I ask if that triggered a re-evaluation of the process parameters
g) How do they control molds, e.g. use of tags to hold molds pending PM or how do they identify molds that are producing nonconforming parts
h) If the plastic components are for use on Medical Devices I will typically include additional questions regarding traceability and how parts are handled to prevent contamination
i) If the company regrinds plastic remnants for they eventual reuse I would check how they are controlled and if the practice is allowed by customer or procedures
 

jerry_Malaysia

Quite Involved in Discussions
#4
I'll audit a new supplier recently,so need a a checklist/Audit of the injection molding process! THS
Hi Hansin

Has the supplier started supply goods already? I think if it is a qualification audit, you may want to focus more on manufacturing process and product audit. If the supplier has already been qualified, you may want to focus more on system audit. But whatever you do, try to conducted it in a process approach manner, though sometime it is difficult.
Also, focus of audit may be different if you are in different industries, example if you are in automotive, medical, food, electronic, chemical and etc

:2cents:
 
C

charliekh

#5
Hi Hansin
What is your purpose by auditing the new supplier? creditabilty? capability? technical process, or other eles. different purpose will need different audit contents. pls clarify your intention so we can provide your clear help.
 

hansin

Starting to get Involved
#6
Hi Hansin

Has the supplier started supply goods already? I think if it is a qualification audit, you may want to focus more on manufacturing process and product audit. If the supplier has already been qualified, you may want to focus more on system audit. But whatever you do, try to conducted it in a process approach manner, though sometime it is difficult.
Also, focus of audit may be different if you are in different industries, example if you are in automotive, medical, food, electronic, chemical and etc

:2cents:
Thank your reply!
the supplier did't started supply goods ,and the supplier has't been qualified.
 

hansin

Starting to get Involved
#7
Hi Hansin
What is your purpose by auditing the new supplier? creditabilty? capability? technical process, or other eles. different purpose will need different audit contents. pls clarify your intention so we can provide your clear help.
Thank your reply!
My purpose by auditing the new supplier is know its creditabilty ,capability,and technical process at one time,technical process especially.so I help get a document on Injection Molding Process aduiting.
 
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