Product Inspection Service China


Expert Pre-shipment Inspection & Quality Control for Global Buyers

Packaging wrinkle mark - Color Box | Product Inspection Finding


Product Inspection Finding

This defect was found during our pre-shipment inspection services for color box packaging. It is a typical and recurring paper quality issue, so we have documented it here as a reference to help you brief your supplier before mass production.

During our inspection, we encountered this critical packaging defect. We are sharing this analysis to provide you with a clearer understanding of the root cause and the required corrective actions to secure your product quality standard.

Finding Analysis Details
Product Color box
Defect Packaging wrinkle mark
Root Cause 1) Color box was made from poor/low GSM paper; 2) Excessive pressure from shrinking packaging film.
Corrective Action 1) Use good quality/higher GSM paper; 2) Eliminate shrinking film packaging process or reduce pressure.
Frequency ⭐⭐⭐⭐⭐
Rework Difficulty ⭐⭐⭐⭐⭐
Rework Collateral Risk ⭐⭐⭐⭐☆

Inspection Photos

Color box - overall view with wrinkle marks
Wrinkle mark detail - paper surface
Shrinking film pressure damage
Paper quality inspection - low GSM comparison
Wrinkle pattern close-up
Packaging Color box - overall view
Color box - overall view
Color box - overall view


💡 QC Insight for Buyers

In packaging, paper quality and shrinking pressure are two critical factors that directly impact the final appearance of your color box. Low GSM paper lacks the structural integrity to withstand shrinking film pressure, resulting in unsightly wrinkle marks that compromise your product’s presentation.

When briefing your supplier, don’t just ask them to “pack it well.” Explicitly request a paper GSM specification and shrinking pressure control as part of your pre-production quality checklist. A simple paper quality test and pressure adjustment can save thousands of dollars in rework costs — one of the most common and preventable issues we catch during pre-shipment inspections.



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