Dear Mei Lee.
From your question about our detection for this problem , We would like to explain our checking as below,
1. Incoming Raw material Process : We have QC sampling 1 % of total material receiving which have the item for checking are the wet , damage of material , the correct of label , physical check and the size of material.
2. In process of Production line : We have the production supervisor check the condition of polybag before take it to use by check the first polybag from every pack which 1 pack have 25 polybags , it’s mean every 25 polybags we will sampling 1 polybags.
When we back to the first time of problem from this supplier , We found the problem was polybag mixing which mixed all 1 pack ( All 25 polybags) so we have the detection follow item 2 by check the first polybag from every pack which 1 pack have 25 polybags.
The reason why we sampling as above , Normally , If the first polybag of the packing was correct it’ s mean the others in the same pack (25 polybags) should correct also because production line of supplier was continuous.
But this time our supplier have error mixing CI3 polybag between BD polybag which not all 25 polybags in 1 pack so difficult to found while checking follow item 2.
Due to the error from supplier in 2 cases which occurred with BD was not same cause so our prevent from the first time not effective for this time.
Then for this time , we prevent the problem occur by,
1. We have training operator who response for load the bale into polybag must to check the code on label every polybag while they work.
2. We have the example chart of BD polybag at the working area as below picture for operator checking and feedback to supervisor when they found the polybag which not same with the example.
And for the last question about the update will come in our control plan , FMEA and procedure are supervisor of production check the first polybag from every pack and the operator who load the bale into polybag check the code on label every polybag.