PET CR‑8828 is a bottle-grade polyethylene terephthalate resin developed by China Resources. It is specially designed for carbonated soft drink (CSD) bottles and large-capacity beverage containers (3‑gallon, 5‑gallon bottles). This resin is characterized by low acetaldehyde content, low heavy metals, good color value, stable intrinsic viscosity, low processing temperature, wide processing window, excellent transparency, high bottle strength, and high yield. CR‑8828 is widely used in high-quality beverage packaging where mechanical strength, appearance, and gas retention are critical.

Property

Unit

Typical / Specification

Notes

Intrinsic Viscosity (IV)

dL/g

0.850 ± 0.02

ASTM D5225

Acetaldehyde (AA)

mg/kg

≤ 1.0

Low acetaldehyde for CSD bottles

Carboxyl (-COOH) End-Group Content

mmol/kg

≤ 35

Indicates controlled chain ends

Color Value – b

–

≤ 1.0

Minimal yellowing

Color Value – L

–

≥ 80.0

High brightness

Melting Point

°C

≥ 240

Thermal performance

Powder / Dust

mg/kg

≤ 100

Clean particle requirement

Moisture Content

wt%

≤ 0.2

Pre-drying recommended

Density

g/cm³

1.40 ± 0.01

Typical PET density

Main Advantages of PET CR‑8828

  • Specialized for Carbonated Beverage Bottles: Optimized for strength, gas retention, and stress-crack resistance.
  • Low Acetaldehyde and Low Heavy Metal: Ensures high-quality beverage flavor and safety.
  • Excellent Color and Transparency: High visual quality for premium packaging.
  • Wide Processing Window: Low temperature and forgiving processing for high yield and production stability.
  • Bottle-Grade Specification: Reduces selection risk for beverage bottle manufacturing.

Typical Applications

  • Carbonated soft drink bottles (CSD).
  • Large-capacity beverage bottles (3‑gallon, 5‑gallon).
  • Pressurized PET containers requiring high strength, transparency, and gas retention.
  • Other bottle-grade PET applications needing high molecular weight, good processability, and superior appearance.

Recommendations for Use

  • Application Matching: CR‑8828 PET is recommended for carbonated beverage bottles and large-capacity beverage containers.
  • Certification Verification: Verify latest TDS for acetaldehyde, heavy metals, COOH content, color, density, moisture, and food-contact compliance.
  • Processing Parameters: Follow supplier guidelines for melt temperature, mold temperature, pre-drying, and blow-molding equipment compatibility.
  • Sample Testing: Conduct evaluation for bottle pressure resistance, gas retention, transparency, color, stress-crack resistance, and appearance.
  • Alternative Evaluation: For non-carbonated applications or higher-temperature needs, consider other PET grades or modified/engineering plastics.
  • Supply Chain Management: Confirm minimum order quantity, packaging (jumbo bag), batch consistency, color options, additive modifications, lead time, and storage conditions.

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