Quality Inspection in BOPP Industry.pptx

Quality Inspection

1. Quality Inspection Reviewed New Criteria 2012 June Edit by JYC

2. Jumbo Quality Sampling Sampling Method: Full film property test conduct when After cold start up [PM, Power Failure,…] Grade change Thickness change Homo material change [Lot number] Significant change of Process Parameter [stretching ratio>100%, etc]

3. In process quality inspection Every Jumbo at winder Haze [AB, Additive, Skin Dosing] Wetting Tension [treatment Level] Visual Defects Jumbo Winding Quality [Baggy, Density] In case of process defects, QC tester issue “QUALITY ALERT” ticket

4. Thickness of Jumbo Roll Inspection Method by Thickness Gauge Review Thickness Gauge Roll Summary Data by n (?) x F/G length [QC] Reject Criteria :CD ± 3% Gauge Target Thickness [QC] Reject CUT OFF [Foreman, Winder man] Jumbo Tag: Use Pre-printed Color Paper Tag 4. A grade only jumbo production

5. Migration test Before slitting migration test Antistatic property & COF test grade: PP: Printing PL: Paper Lamination HW: heat sealable overwrapping HJ: Straw packing HT: Tobacco packing SO: High shrink machine wrapping SA: High shrink machine wrapping good AS effect AF: Anti fogging film LP: hot melt glue seal film

6. Slitting Inspection I Extra length requirement by program Joint requirement: 1. Bag making grade: no limit per roll batch size : < ? % of total order 2. Printing grade and equivalent: Joint position requirement > 1 000m with 1 joint Batch size: < 10% local of total order

7. Slitting Inspection II Roll hardness: Target Harness 85° by asker type C Reject: < 80 and > 92° Other winding appearance could be specified prepare visual appearance check list

8. Optimize QC Inspection Criteria Review customer quality requirement Set up customer complaint target level by individual grade of film Proposed complaint level: 5 ,000ppm 3. Digest quality test and inspection criteria by grade

9. Establish Cut Off system Establish A grade only production system without yield sacrifice [Production] Use jumbo tag for cut off Utilize jumbo profile data for thickness inspection Record production loss data

10. Enhance Quality Assurance Conduct Mass Balance Calibration by quarterly Train the customer requirement for quality relevant personnel Calibrate the production floor equipment Improve incoming material quality