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When corporate procurement directors, quality assurance heads, and technical compounders evaluate recycled Polyethylene Terephthalate (pet flakes) from overseas suppliers, the transaction rarely starts with a pricing quote. It begins with the Technical Data Sheet (TDS).
In the global polymer trade, a TDS is more than marketing literature—it is a binding disclosure of chemical purity, mechanical performance, and regulatory safety.
For years, informal recycling workshops across emerging markets provided vague, single-page specification sheets that listed generic metrics like “clean flakes” or broad viscosity ranges.
In institutional purchasing, unverified specifications are an immediate red flag that halts procurement audits before they begin.
Enterprise buyers in Europe, North America, and developed Asian markets require standard test method citations (ASTM, ISO, DIN), tight variance limits ($\pm$), and explicit trace contaminant thresholds.
Building an audit-ready recycled PET technical data sheet TDS bridges the gap between raw scrap processing and enterprise-grade polymer manufacturing.
This technical guide outlines the essential physical, chemical, and optical parameters required on an institutional rPET TDS, explains standard laboratory testing methods, and demonstrates how Key Mart Limited delivers transparent, batch-certified rPET flakes to global converters.
1. The Anatomy of an Institutional rPET Technical Data Sheet
An enterprise-grade TDS organizes material properties into distinct, test-backed categories with certified testing standards:
Incoming Source Verification ➔ Physical & Bulk Mechanics ➔ Thermal & Rheological Testing ➔ Trace Contaminant Disclosures ➔ Third-Party GRS / REACH Certification ➔ Institutional TDS Approval
A. Core Physical & Mechanical Parameters
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Intrinsic Viscosity ($IV$ – ASTM D4603 / ISO 1628-5): Must define nominal value and tolerance (e.g., $0.80 \pm 0.02\text{ dL/g}$ in dichloroacetic acid / phenol-tetrachloroethane solvent).
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Bulk Density (ASTM D1895): Poured bulk density ($320\text{–}360\text{ kg/m}^3$) determines hopper filling rates and volumetric feeding consistency.
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Particle Size Distribution (ASTM D1921): Sieve analysis disclosing percentage retained between $4.0\text{ mm and }10.0\text{ mm}$ ($> 88\%$), with strict caps on oversized chips ($> 12\text{ mm} < 0.5\%$) and micro-fines ($< 500\,\mu\text{m} < 0.3\%$).
B. Optical and Colorimetric Coordinates (CIE $L^*a^*b^*$ / ASTM D6290)
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Luminance ($L^*$): Measures lightness/brightness ($L^* \ge 74.0\text{ to }84.0+$).
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Yellowness/Blueness ($b^*$): Quantifies yellow shift ($b^* \le +1.0\text{ to }+1.5$), critical for optical sheet and clear bottle preforms.
C. Chemical & Contaminant Thresholds (PPM Disclosures)
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Polyvinyl Chloride (PVC) Content: Thermal coloration test / NIR screening ($\le 25\text{–}50\text{ PPM}$).
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Polyolefin (PP/PE) Content: Flotation separation / FTIR ($\le 25\text{ PPM}$).
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Moisture Content at Packaging: Karl Fischer titration / moisture balance ($\le 0.5\%$).
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Residual Alkalinity / pH: Conductometric titration ($\text{Residual NaOH} < 15\text{ PPM}$, aqueous extract $\text{pH } 6.8\text{–}7.2$).
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Heavy Metals & SVHC (EU REACH): ICP-OES spectroscopy ($< 100\text{ PPM}$ aggregate threshold).
Institutional rPET Technical Specification Benchmark
Read More: A Step-by-Step Guide to Importing PET Flakes from Bangladesh via Chittagong Port
| Parameter on Technical Data Sheet | Standard Industrial Sheet | Generic Scrap Flyer | Key Mart Certified Institutional TDS |
| Testing Standard Citation | Partial (Internal only) | Absent | 100% ASTM / ISO Method Referenced |
| Intrinsic Viscosity ($IV$) Tolerance | Wide ($0.70\text{–}0.78\text{ dL/g}$) | Unstated | 0.78 – 0.82 dL/g (Tight ±0.02 Limit) |
| PVC Contamination Disclosure | $< 100\text{ PPM}$ | “PVC Free” (Vague) | < 25 – 50 PPM (Continuous Hot-Caustic) |
| Micro-Dust & Fines ($<500\,\mu\text{m}$) | $< 1.5\%$ | Not Disclosed | < 0.3% (Multi-Stage Air Elutriated) |
| Polyolefins (PP/PE Cap Plastic) | $< 100\text{ PPM}$ | “Low Polyolefin” | < 25 PPM (Sink-Float Automated) |
| Color Coordinates ($L^*, b^*$) | $L^* > 70.0, b^* < 3.0$ | Visual “Clear” | L* ≥ 74.0 to 84.0+, b* ≤ +1.2 |
| Residual Moisture at Sealing | $< 0.8\%$ | “Dry” | < 0.5% (Centrifugally & Heat Dried) |
| Batch Traceability & CoA | Self-Declared | None | GRS 4.0 Transaction Certified (TC)` |
2. Why Transparent Chemical Disclosures Win Global Contracts
Providing comprehensive data on a TDS protects both converters and manufacturers:
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Streamlining Customer R&D Qualification: Converters run computer-aided rheology simulations before loading new resin. Providing verified viscosity curves, melting points ($T_m$), and glass transition values ($T_g$) cuts raw material qualification cycles from months to days.
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Preventing Customs and Regulatory Rejections: When shipping into regions with strict chemical frameworks (such as EU REACH, US FDA food-contact standards, or RoHS directives), an institutional TDS backed by lab-certified Certificates of Analysis (CoA) ensures smooth border clearance.
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Establishing Contractual Quality Baselines: A clear TDS serves as the technical baseline for commercial supply contracts, establishing transparent parameter ranges and eliminating quality disputes upon container arrival.
3. How Key Mart Limited Meets Institutional Sourcing Standards
Delivering audit-proof rPET feedstock requires partnering with an established bangladesh pet flakes manufacturer that has comprehensive sorting, high-temperature washing, and laboratory quality controls.
As a premier pet flakes company bangladesh and trusted pet flakes exporter, Key Mart Limited supplies verified, chemically disclosed rPET flakes engineered to meet global industrial standards:
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Source-Segregated Collection in Dhaka: Operating as a leading pet flakes manufacturer dhaka, Key Mart Limited exclusively processes 100% post-consumer clear beverage containers, rejecting mixed industrial scrap, colored packaging, and non-PET plastics at intake gates.
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Continuous Hot-Caustic Decontamination ($85^\circ\text{C}-95^\circ\text{C}$): As an established bangladesh pet flakes manufacturer, our facility subjects flakes to continuous hot-caustic friction washing and automated NIR optical sorting, fully saponifying label glues and stripping organic residues to guarantee $\text{PVC} < 25\text{–}50\text{ PPM}$ and zero adhesive carryover.
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Sub-0.3% Fines Removal via Air Elutriation: Serving as an experienced pet flakes exporter, Key Mart Limited passes every batch through automated multi-stage zig-zag air classifiers, keeping dust and fines strictly below $0.3\%$ to eliminate feed-throat bridging and melt pressure surges.
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Laboratory-Verified TDS & Batch Traceability: Every export lot is tested in our Dhaka quality control laboratory for stable Intrinsic Viscosity ($0.78\text{–}0.82\text{ dL/g}$), high optical luminance ($L^* \ge 74.0, b^* \le +1.2$), and clean thermal profiles, backed by batch-specific Certificates of Analysis (CoA) and Global Recycled Standard (GRS 4.0) Transaction Certificates (TC).
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Maximized 25–26 MT Container Logistics: We pack 25–26 Metric Tons into every 40ft High Cube container with heavy-duty 100-micron PE inner liners to preserve feedstock dryness during transit under FOB Chittagong, CFR, or CIF shipping terms.
Partner with Key Mart Limited Today
Obtain comprehensive Technical Data Sheets, ensure transparent chemical disclosures, and secure high-purity rPET flakes from Bangladesh. Contact our Dhaka export management team today to request Technical Data Sheets, order commercial testing samples, or reserve monthly container allocations.
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Company Name: Key Mart Limited
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Head Office & Factory Address: Plot #31, Road #N-1, Block #K, Eastern Housing, Pallabi 2nd Phase, Rupnagar, Dhaka-1216, Bangladesh.
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Official Website: www.keymartbd.com
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Corporate Email: keymartltd@gmail.com | info@keymartbd.com
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Direct Phone / WhatsApp: +8801760774499, +8801864935478
