Pre-Shipment Inspection Checklist for Bulk PET Import Containers

For international buyers purchasing recycled Polyethylene Terephthalate (pet flakes), receiving a contaminated or moisture-damaged shipment can halt production lines and compromise end-product quality. Whether you are producing high-tenacity polyester staple fiber (PSF), thermoforming packaging sheets, or bottle-to-bottle resin, implementing a rigorous Pre-Shipment Inspection (PSI) protocol is your primary line of defense against supply chain disruptions.

Conducting a thorough physical and technical audit before containers are sealed at the origin port prevents costly disputes, transit delays, and processing failures.

Why Pre-Shipment Inspection Matters for rPET Importers

Polymer degradation during transit often stems from poor container preparation, unverified purity metrics, or faulty packaging. A standardized inspection checklist ensures that every metric ton of clear rPET flakes meets agreed-upon technical specifications prior to loading.

[Quality Control Audit] ➔ [Container Integrity Verification] ➔ [Sealing & Documentation] ➔ [Zero Defect Import]

Key risks mitigated by a thorough pre-shipment audit include:

Hydrolytic Degradation: Caused by elevated moisture levels during long-haul ocean shipping.
Extruder Clogging & Tool Wear: Resulting from unmonitored PVC levels or excessive fine particles.
Discoloration & Haze: Caused by stray colored flakes exceeding strict PPM limits.

Comprehensive Pre-Shipment Inspection Checklist

To guarantee batch uniformity and shipping safety, quality assurance (QA) teams should verify the following five critical audit pillars before releasing any shipment:

1. Physical Flake Purity & Specification Verification

[ ] Intrinsic Viscosity (IV): Tested and confirmed within target parameters ( $0.72 - 0.85 \text{ dL/g}$ ).
[ ] PVC Contamination: Guaranteed below 50 PPM to avoid thermal degradation during extrusion.
[ ] Color Contamination: Verified below 500 PPM (0.05%) for clear flake grades to ensure high optical transparency.
[ ] Fines & Dust Content: Checked below 0.5% ( $< 500\,\mu\text{m}$ ) to prevent melt surges and filter clogging.
[ ] Moisture Content: Pre-drying levels verified below 1.0% prior to packaging.

2. FIBC Jumbo Bag & Packaging Integrity

[ ] Bag Specifications: Heavy-duty, UV-stabilized woven polypropylene (PP) jumbo bags (1,000 kg – 1,250 kg capacity) with a certified Safety Factor (SF) of 5:1 or 6:1.
[ ] Moisture-Proof Liners: Inner 80–120 $\mu\text{m}$ PE form-fit liners properly tied and heat-sealed to prevent moisture ingress.
[ ] Seam Construction: Dust-proof/sift-proof stitching intact with no fraying or pinhole tears.
[ ] Labeling Accuracy: Clear batch numbers, net weight, production dates, and gross weights displayed on every FIBC bag.

3. Container Structural & Environmental Audit

[ ] Cleanliness & Odor: Container interior thoroughly swept, dry, free of chemical residues, grease, or persistent odors.
[ ] Weather-Tightness (Light Test): Checked for light leaks from inside with doors closed to ensure no rain or ocean spray penetration.
[ ] Floor Condition: Wooden flooring inspected for protruding nails, splinters, or damp spots that could puncture bottom bags.

4. Container Loading & Weight Distribution

[ ] Volumetric Optimization: Bags square-stacked or baffle-configured to maximize space utilization in 40ft High Cube containers (targeting 25–26 Metric Tons payload).
[ ] Weight Balance: Payload distributed evenly across the floor plane to comply with international maritime weight limits.
[ ] Desiccant Placement: High-absorption ocean shipping desiccant bags hung along internal container walls to prevent “container rain.”

5. Sealing & Export Documentation Verification

[ ] High-Security Bolt Seal: Official tamper-evident bolt seal affixed to container door latches and seal number recorded on the Bill of Lading (B/L).
[ ] Certificate of Analysis (CoA): Batch-specific CoA signed off by origin lab personnel.
[ ] Photo Documentation: Clear photos taken of empty container interior, half-loaded container, fully loaded payload, and closed doors displaying the intact bolt seal.

Technical Quality Benchmark Table

Inspection Parameter	Standard Acceptable Limit	Impact of Non-Compliance
PVC Contamination	`< 50 PPM`	Prevents equipment corrosion and black specks
Color Contamination	`< 500 PPM`	Ensures optical clarity and prevents yellowing
Intrinsic Viscosity (IV)	`0.72 – 0.85 dL/g`	Retains mechanical strength during fiber/sheet spinning
Fine Content (< 500 µm)	`< 0.5%`	Eliminates melt pressure spikes and filter blockage
Moisture Content	`< 1.0%`	Prevents hydrolytic IV drop during ocean transit
Container Payload	`25 – 26 Metric Tons`	Maximizes freight cost efficiency per metric ton

How Key Mart Limited Fulfills Global Buyer Demand

Sourcing high-purity recycled PET requires an export partner that implements internal pre-shipment inspections on every order before containers leave the factory floor.

As a premier pet flakes company bangladesh and trusted pet flakes exporter, Key Mart Limited bridges the gap between stringent global buyer specifications and local manufacturing excellence:

State-of-the-Art Processing in Dhaka: Operating as a leading pet flakes manufacturer dhaka, Key Mart Limited utilizes automated optical sorting, caustic hot-washing, and air elutriation to deliver export-grade clear flakes with sub-50 PPM PVC and sub-500 PPM color limits.
Engineered Export Packaging: As an established bangladesh pet flakes manufacturer, we package all orders in heavy-duty, form-stable Baffle FIBC bags fitted with 100 $\mu\text{m}$ PE moisture liners, protecting cargo against ocean humidity.
Container Loading Optimization: Functioning as an experienced pet flakes exporter, Key Mart Limited optimizes every 40ft High Cube shipment to carry up to 25–26 metric tons, significantly lowering ocean freight costs per ton for international importers.
Transparent Quality Audits & Certification: Every shipment is backed by a full pre-shipment photo package, batch Certificates of Analysis (CoA), Technical Data Sheets (TDS), and high-security bolt sealing under FOB Chittagong or CFR/CIF terms.

Partner with Key Mart Limited Today

Ensure zero-defect rPET imports backed by rigorous pre-shipment quality control. Contact our export desk today to request Technical Data Sheets, order commercial samples, or schedule container allocations.

Company Name: Key Mart Limited
Head Office & Factory Address: Plot #31, Road #N-1, Block #K, Eastern Housing, Pallabi 2nd Phase, Rupnagar, Dhaka-1216, Bangladesh.
Official Website: www.keymartbd.com
Corporate Email: keymartltd@gmail.com | info@keymartbd.com
Direct Phone / WhatsApp: +8801760774499, +8801864935478

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